Merge branch 'release/v0.7.10'vv0.7.10

344 files changed, 67743 insertions, 1445 deletions

diff --git a/.gitignore b/.gitignore
index de3a847ac..fea7df6c2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,4 @@
 *un~
 .DS_Store
 */**/.DS_Store
-ethereum/ethereum
-ethereal/ethereal
-
+.ethtest
diff --git a/.travis.yml b/.travis.yml
index 32740f91a..d09cbcdb0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,25 @@
-before_install: sudo apt-get install libgmp3-dev
 language: go
 go:
-  - 1.2
+  - 1.3
+before_install:
+  - sudo add-apt-repository ppa:ubuntu-sdk-team/ppa -y
+  - sudo apt-get update -qq
+  - sudo apt-get install -yqq libgmp3-dev qtbase5-private-dev qtdeclarative5-private-dev libqt5opengl5-dev libreadline6-dev
+install:
+  - go get code.google.com/p/go.tools/cmd/goimports
+  - go get github.com/golang/lint/golint
+  # - go get code.google.com/p/go.tools/cmd/vet
+  - go get code.google.com/p/go.tools/cmd/cover
+  - go get github.com/mattn/goveralls
+  - ./install_deps.sh
+before_script:
+  - gofmt -l -w .
+  - goimports -l -w .
+  - golint .
+  # - go vet ./...
+  # - go test -race ./...
+script:
+  - ./gocoverage.sh && goveralls -coverprofile=profile.cov -service=travis-ci -repotoken $COVERALLS_TOKEN
+env:
+  - secure: "U2U1AmkU4NJBgKR/uUAebQY87cNL0+1JHjnLOmmXwxYYyj5ralWb1aSuSH3qSXiT93qLBmtaUkuv9fberHVqrbAeVlztVdUsKAq7JMQH+M99iFkC9UiRMqHmtjWJ0ok4COD1sRYixxi21wb/JrMe3M1iL4QJVS61iltjHhVdM64="
+
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 000000000..1f37ce892
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,41 @@
+FROM ubuntu:14.04
+
+## Environment setup
+ENV HOME /root
+ENV GOPATH /root/go
+ENV PATH /go/bin:/root/go/bin:/usr/local/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
+
+RUN mkdir -p /root/go
+ENV DEBIAN_FRONTEND noninteractive
+
+## Install base dependencies
+RUN apt-get update && apt-get upgrade -y
+RUN apt-get install -y git mercurial build-essential software-properties-common pkg-config libgmp3-dev libreadline6-dev libpcre3-dev libpcre++-dev
+
+## Build and install Go
+RUN hg clone -u release https://code.google.com/p/go
+RUN cd go && hg update go1.4
+RUN cd go/src && ./all.bash && go version
+
+## Install GUI dependencies
+RUN add-apt-repository ppa:ubuntu-sdk-team/ppa -y
+RUN apt-get update -y
+RUN apt-get install -y qtbase5-private-dev qtdeclarative5-private-dev libqt5opengl5-dev
+
+## Fetch and install serpent-go
+RUN go get -v -d github.com/ethereum/serpent-go
+WORKDIR $GOPATH/src/github.com/ethereum/serpent-go
+RUN git checkout master
+RUN git submodule update --init
+RUN go install -v
+
+# Fetch and install go-ethereum
+RUN go get -v -d github.com/ethereum/go-ethereum/...
+WORKDIR $GOPATH/src/github.com/ethereum/go-ethereum
+RUN git checkout poc8
+RUN ETH_DEPS=$(go list -f '{{.Imports}} {{.TestImports}} {{.XTestImports}}' github.com/ethereum/go-ethereum/... | sed -e 's/\[//g' | sed -e 's/\]//g' | sed -e 's/C //g'); if [ "$ETH_DEPS" ]; then go get $ETH_DEPS; fi
+RUN go install -v ./cmd/ethereum
+
+# Run JSON RPC
+ENTRYPOINT ["ethereum", "-rpc=true", "-rpcport=8080"]
+EXPOSE 8080
diff --git a/LICENSE b/LICENSE
index 78efdaabe..30f629158 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,16 +1,16 @@
 Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
 
 This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public
+modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.
 
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-General Public License for more details.
+Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with this library; if not, write to the Free Software
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 MA 02110-1301  USA
diff --git a/README.md b/README.md
index 8657e3fb6..564e5c56d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,8 @@
+[![Bugs](https://badge.waffle.io/ethereum/go-ethereum.png?label=bug&title=Bugs)](https://waffle.io/ethereum/go-ethereum)
 [![Stories in Ready](https://badge.waffle.io/ethereum/go-ethereum.png?label=ready&title=Ready)](https://waffle.io/ethereum/go-ethereum)
+[![Stories in
+Progress](https://badge.waffle.io/ethereum/go-ethereum.svg?label=in%20progress&title=In Progress)](http://waffle.io/ethereum/go-ethereum)
+
 Ethereum
 ========
 
@@ -8,38 +12,64 @@ Status](http://build.ethdev.com/buildstatusimage?builder=Linux%20Go%20develop%20
 
 Ethereum Go Client © 2014 Jeffrey Wilcke.
 
-Current state: Proof of Concept 0.6.7.
+Current state: Proof of Concept 0.7
 
-For the development package please see the [eth-go package](https://github.com/ethereum/eth-go).
+Ethereum is currently in its testing phase. 
 
 Build
-=======
+=====
 
-To build Ethereal (GUI):
+To build Mist (GUI):
 
-`go get github.com/ethereum/go-ethereum/ethereal`
+`go get github.com/ethereum/go-ethereum/cmd/mist`
 
 To build the node (CLI):
 
-`go get github.com/ethereum/go-ethereum/ethereum`
+`go get github.com/ethereum/go-ethereum/cmd/ethereum`
 
 For further, detailed, build instruction please see the [Wiki](https://github.com/ethereum/go-ethereum/wiki/Building-Ethereum(Go))
 
+Automated (dev) builds
+======================
+
+* [[OS X](http://build.ethdev.com/builds/OSX%20Go%20develop%20branch/latest/app/)]
+* [Windows] Coming soon™
+* [Linux] Coming soon™
+
+Binaries
+========
+
+Go Ethereum comes with several binaries found in
+[cmd](https://github.com/ethereum/go-ethereum/tree/master/cmd):
+
+* `mist` Official Ethereum Browser
+* `ethereum` Ethereum CLI
+* `ethtest` test tool which runs with the [tests](https://github.com/ethereum/testes) suit: 
+  `ethtest "`cat myfile.json`"`.
+* `evm` is a generic Ethereum Virtual Machine: `evm -code 60ff60ff -gas
+  10000 -price 0 -dump`. See `-h` for a detailed description.
+
 General command line options
-====================
+============================
 
 ```
-Shared between ethereum and ethereal
+== Shared between ethereum and Mist ==
+
+= Settings
 -id      Set the custom identifier of the client (shows up on other clients)
 -port    Port on which the server will accept incomming connections
 -upnp    Enable UPnP
 -maxpeer Desired amount of peers
 -rpc     Start JSON RPC
-
 -dir     Data directory used to store configs and databases
--import  Import a private key
--genaddr Generates a new address and private key (destructive action)
--h       This
+
+= Utility 
+-h         This
+-import    Import a private key
+-genaddr   Generates a new address and private key (destructive action)
+-dump      Dump a specific state of a block to stdout given the -number or -hash
+-difftool  Supress all output and prints VM output to stdout
+-diff      vm=only vm output, all=all output including state storage
 
 Ethereum only
 ethereum [options] [filename]
@@ -47,31 +77,34 @@ ethereum [options] [filename]
 filename   Load the given file and interpret as JavaScript
 -m       Start mining blocks
 
-Etheral only
+== Mist only ==
+
 -asset_path    absolute path to GUI assets directory
 ```
 
 Contribution
 ============
 
-If you would like to contribute to Ethereum Go, please fork, fix, commit and
-send a pull request to the main repository. Commits which do not comply with the coding standards explained below
-will be ignored. If you send a pull request, make sure that you
-commit to the `develop` branch and that you do not merge to `master`.
-Commits that are directly based off of the `master` branch instead of the `develop` branch will be ignored.
+If you'd like to contribute to Ethereum please fork, fix, commit and
+send a pull request. Commits who do not comply with the coding standards
+are ignored (use gofmt!). If you send pull requests make absolute sure that you
+commit on the `develop` branch and that you do not merge to master.
+Commits that are directly based on master are simply ignored.
 
-To make this process simpler try following the [git flow](http://nvie.com/posts/a-successful-git-branching-model/) branching model, as it sets this process up and streamlines work flow.
+To make life easier try [git flow](http://nvie.com/posts/a-successful-git-branching-model/) it sets
+this all up and streamlines your work flow.
 
 Coding standards
 ================
 
-Code should be formatted according to the [Go Formatting
+Sources should be formatted according to the [Go Formatting
 Style](http://golang.org/doc/effective_go.html#formatting).
 
-Unless struct fields are supposed to be directly accessible, provide
-getters and hide the fields through Go's exporting facility.
+Unless structs fields are supposed to be directly accesible, provide
+Getters and hide the fields through Go's exporting facility.
 
-Make comments in your code meaningful and only use them when necessary. Describe in detail what your code is trying to achieve. For example, this would be redundant and unnecessary commenting:
+When you comment put meaningfull comments. Describe in detail what you
+want to achieve.
 
 *wrong*
 
@@ -82,7 +115,12 @@ if x > y {
 }
 ```
 
-Everyone reading the source code should know what this code snippet was meant to achieve, and so those are **not** meaningful comments.
+Everyone reading the source probably know what you wanted to achieve
+with above code. Those are **not** meaningful comments.
 
-While this project is constantly tested and run, code tests should be written regardless. There is not time to evaluate every person's code specifically, so it is expected of you to write tests for the code so that it does not have to be tested manually. In fact, contributing by simply writing tests is perfectly fine!
+While the project isn't 100% tested I want you to write tests non the
+less. I haven't got time to evaluate everyone's code in detail so I
+expect you to write tests for me so I don't have to test your code
+manually. (If you want to contribute by just writing tests that's fine
+too!)
 
diff --git a/_data/chain1 b/_data/chain1
new file mode 100755
index 000000000..ef392e001
--- /dev/null
+++ b/_data/chain1
diff --git a/_data/chain2 b/_data/chain2
new file mode 100755
index 000000000..48ed4d5ea
--- /dev/null
+++ b/_data/chain2
diff --git a/block_pool.go b/block_pool.go
new file mode 100644
index 000000000..c618f6993
--- /dev/null
+++ b/block_pool.go
@@ -0,0 +1,351 @@
+package eth
+
+import (
+	"bytes"
+	"container/list"
+	"fmt"
+	"math"
+	"math/big"
+	"sync"
+	"time"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/wire"
+)
+
+var poollogger = logger.NewLogger("BPOOL")
+
+type block struct {
+	from      *Peer
+	peer      *Peer
+	block     *types.Block
+	reqAt     time.Time
+	requested int
+}
+
+type BlockPool struct {
+	mut sync.Mutex
+
+	eth *Ethereum
+
+	hashes [][]byte
+	pool   map[string]*block
+
+	td   *big.Int
+	quit chan bool
+
+	fetchingHashes    bool
+	downloadStartedAt time.Time
+
+	ChainLength, BlocksProcessed int
+
+	peer *Peer
+}
+
+func NewBlockPool(eth *Ethereum) *BlockPool {
+	return &BlockPool{
+		eth:  eth,
+		pool: make(map[string]*block),
+		td:   ethutil.Big0,
+		quit: make(chan bool),
+	}
+}
+
+func (self *BlockPool) Len() int {
+	return len(self.hashes)
+}
+
+func (self *BlockPool) Reset() {
+	self.pool = make(map[string]*block)
+	self.hashes = nil
+}
+
+func (self *BlockPool) HasLatestHash() bool {
+	self.mut.Lock()
+	defer self.mut.Unlock()
+
+	return self.pool[string(self.eth.ChainManager().CurrentBlock().Hash())] != nil
+}
+
+func (self *BlockPool) HasCommonHash(hash []byte) bool {
+	return self.eth.ChainManager().GetBlock(hash) != nil
+}
+
+func (self *BlockPool) Blocks() (blocks types.Blocks) {
+	for _, item := range self.pool {
+		if item.block != nil {
+			blocks = append(blocks, item.block)
+		}
+	}
+
+	return
+}
+
+func (self *BlockPool) FetchHashes(peer *Peer) bool {
+	highestTd := self.eth.HighestTDPeer()
+
+	if (self.peer == nil && peer.td.Cmp(highestTd) >= 0) || (self.peer != nil && peer.td.Cmp(self.peer.td) > 0) || self.peer == peer {
+		if self.peer != peer {
+			poollogger.Infof("Found better suitable peer (%v vs %v)\n", self.td, peer.td)
+
+			if self.peer != nil {
+				self.peer.doneFetchingHashes = true
+			}
+		}
+
+		self.peer = peer
+		self.td = peer.td
+
+		if !self.HasLatestHash() {
+			self.fetchHashes()
+		}
+
+		return true
+	}
+
+	return false
+}
+
+func (self *BlockPool) fetchHashes() {
+	peer := self.peer
+
+	peer.doneFetchingHashes = false
+
+	const amount = 256
+	peerlogger.Debugf("Fetching hashes (%d) %x...\n", amount, peer.lastReceivedHash[0:4])
+	peer.QueueMessage(wire.NewMessage(wire.MsgGetBlockHashesTy, []interface{}{peer.lastReceivedHash, uint32(amount)}))
+}
+
+func (self *BlockPool) AddHash(hash []byte, peer *Peer) {
+	self.mut.Lock()
+	defer self.mut.Unlock()
+
+	if self.pool[string(hash)] == nil {
+		self.pool[string(hash)] = &block{peer, nil, nil, time.Now(), 0}
+
+		self.hashes = append([][]byte{hash}, self.hashes...)
+	}
+}
+
+func (self *BlockPool) Add(b *types.Block, peer *Peer) {
+	self.addBlock(b, peer, false)
+}
+
+func (self *BlockPool) AddNew(b *types.Block, peer *Peer) {
+	self.addBlock(b, peer, true)
+}
+
+func (self *BlockPool) addBlock(b *types.Block, peer *Peer, newBlock bool) {
+	self.mut.Lock()
+	defer self.mut.Unlock()
+
+	hash := string(b.Hash())
+
+	if self.pool[hash] == nil && !self.eth.ChainManager().HasBlock(b.Hash()) {
+		poollogger.Infof("Got unrequested block (%x...)\n", hash[0:4])
+
+		self.hashes = append(self.hashes, b.Hash())
+		self.pool[hash] = &block{peer, peer, b, time.Now(), 0}
+
+		// The following is only performed on an unrequested new block
+		if newBlock {
+			fmt.Println("1.", !self.eth.ChainManager().HasBlock(b.PrevHash), ethutil.Bytes2Hex(b.Hash()[0:4]), ethutil.Bytes2Hex(b.PrevHash[0:4]))
+			fmt.Println("2.", self.pool[string(b.PrevHash)] == nil)
+			fmt.Println("3.", !self.fetchingHashes)
+			if !self.eth.ChainManager().HasBlock(b.PrevHash) /*&& self.pool[string(b.PrevHash)] == nil*/ && !self.fetchingHashes {
+				poollogger.Infof("Unknown chain, requesting (%x...)\n", b.PrevHash[0:4])
+				peer.QueueMessage(wire.NewMessage(wire.MsgGetBlockHashesTy, []interface{}{b.Hash(), uint32(256)}))
+			}
+		}
+	} else if self.pool[hash] != nil {
+		self.pool[hash].block = b
+	}
+
+	self.BlocksProcessed++
+}
+
+func (self *BlockPool) Remove(hash []byte) {
+	self.mut.Lock()
+	defer self.mut.Unlock()
+
+	self.hashes = ethutil.DeleteFromByteSlice(self.hashes, hash)
+	delete(self.pool, string(hash))
+}
+
+func (self *BlockPool) DistributeHashes() {
+	self.mut.Lock()
+	defer self.mut.Unlock()
+
+	var (
+		peerLen = self.eth.peers.Len()
+		amount  = 256 * peerLen
+		dist    = make(map[*Peer][][]byte)
+	)
+
+	num := int(math.Min(float64(amount), float64(len(self.pool))))
+	for i, j := 0, 0; i < len(self.hashes) && j < num; i++ {
+		hash := self.hashes[i]
+		item := self.pool[string(hash)]
+
+		if item != nil && item.block == nil {
+			var peer *Peer
+			lastFetchFailed := time.Since(item.reqAt) > 5*time.Second
+
+			// Handle failed requests
+			if lastFetchFailed && item.requested > 5 && item.peer != nil {
+				if item.requested < 100 {
+					// Select peer the hash was retrieved off
+					peer = item.from
+				} else {
+					// Remove it
+					self.hashes = ethutil.DeleteFromByteSlice(self.hashes, hash)
+					delete(self.pool, string(hash))
+				}
+			} else if lastFetchFailed || item.peer == nil {
+				// Find a suitable, available peer
+				eachPeer(self.eth.peers, func(p *Peer, v *list.Element) {
+					if peer == nil && len(dist[p]) < amount/peerLen && p.statusKnown {
+						peer = p
+					}
+				})
+			}
+
+			if peer != nil {
+				item.reqAt = time.Now()
+				item.peer = peer
+				item.requested++
+
+				dist[peer] = append(dist[peer], hash)
+			}
+		}
+	}
+
+	for peer, hashes := range dist {
+		peer.FetchBlocks(hashes)
+	}
+
+	if len(dist) > 0 {
+		self.downloadStartedAt = time.Now()
+	}
+}
+
+func (self *BlockPool) Start() {
+	go self.downloadThread()
+	go self.chainThread()
+}
+
+func (self *BlockPool) Stop() {
+	close(self.quit)
+}
+
+func (self *BlockPool) downloadThread() {
+	serviceTimer := time.NewTicker(100 * time.Millisecond)
+out:
+	for {
+		select {
+		case <-self.quit:
+			break out
+		case <-serviceTimer.C:
+			// Check if we're catching up. If not distribute the hashes to
+			// the peers and download the blockchain
+			self.fetchingHashes = false
+			eachPeer(self.eth.peers, func(p *Peer, v *list.Element) {
+				if p.statusKnown && p.FetchingHashes() {
+					self.fetchingHashes = true
+				}
+			})
+
+			if len(self.hashes) > 0 {
+				self.DistributeHashes()
+			}
+
+			if self.ChainLength < len(self.hashes) {
+				self.ChainLength = len(self.hashes)
+			}
+
+			if self.peer != nil &&
+				!self.peer.doneFetchingHashes &&
+				time.Since(self.peer.lastHashAt) > 10*time.Second &&
+				time.Since(self.peer.lastHashRequestedAt) > 5*time.Second {
+				self.fetchHashes()
+			}
+
+			/*
+				if !self.fetchingHashes {
+					blocks := self.Blocks()
+					chain.BlockBy(chain.Number).Sort(blocks)
+
+					if len(blocks) > 0 {
+						if !self.eth.ChainManager().HasBlock(b.PrevHash) && self.pool[string(b.PrevHash)] == nil && !self.fetchingHashes {
+						}
+					}
+				}
+			*/
+		}
+	}
+}
+
+func (self *BlockPool) chainThread() {
+	procTimer := time.NewTicker(500 * time.Millisecond)
+out:
+	for {
+		select {
+		case <-self.quit:
+			break out
+		case <-procTimer.C:
+			blocks := self.Blocks()
+			types.BlockBy(types.Number).Sort(blocks)
+
+			// Find common block
+			for i, block := range blocks {
+				if self.eth.ChainManager().HasBlock(block.PrevHash) {
+					blocks = blocks[i:]
+					break
+				}
+			}
+
+			if len(blocks) > 0 {
+				if self.eth.ChainManager().HasBlock(blocks[0].PrevHash) {
+					for i, block := range blocks[1:] {
+						// NOTE: The Ith element in this loop refers to the previous block in
+						// outer "blocks"
+						if bytes.Compare(block.PrevHash, blocks[i].Hash()) != 0 {
+							blocks = blocks[:i]
+
+							break
+						}
+					}
+				} else {
+					blocks = nil
+				}
+			}
+
+			if len(blocks) > 0 {
+				chainman := self.eth.ChainManager()
+
+				err := chainman.InsertChain(blocks)
+				if err != nil {
+					poollogger.Debugln(err)
+
+					self.Reset()
+
+					if self.peer != nil && self.peer.conn != nil {
+						poollogger.Debugf("Punishing peer for supplying bad chain (%v)\n", self.peer.conn.RemoteAddr())
+					}
+
+					// This peer gave us bad hashes and made us fetch a bad chain, therefor he shall be punished.
+					self.eth.BlacklistPeer(self.peer)
+					self.peer.StopWithReason(DiscBadPeer)
+					self.td = ethutil.Big0
+					self.peer = nil
+				}
+
+				for _, block := range blocks {
+					self.Remove(block.Hash())
+				}
+			}
+		}
+	}
+}
diff --git a/cmd/LICENSE b/cmd/LICENSE
new file mode 100644
index 000000000..78efdaabe
--- /dev/null
+++ b/cmd/LICENSE
@@ -0,0 +1,16 @@
+Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+MA 02110-1301  USA
diff --git a/cmd/ethereum/cmd.go b/cmd/ethereum/cmd.go
new file mode 100644
index 000000000..8710d6136
--- /dev/null
+++ b/cmd/ethereum/cmd.go
@@ -0,0 +1,52 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
+package main
+
+import (
+	"io/ioutil"
+	"os"
+
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/cmd/ethereum/repl"
+	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/javascript"
+)
+
+func InitJsConsole(ethereum *eth.Ethereum) {
+	repl := ethrepl.NewJSRepl(ethereum)
+	go repl.Start()
+	utils.RegisterInterrupt(func(os.Signal) {
+		repl.Stop()
+	})
+}
+
+func ExecJsFile(ethereum *eth.Ethereum, InputFile string) {
+	file, err := os.Open(InputFile)
+	if err != nil {
+		clilogger.Fatalln(err)
+	}
+	content, err := ioutil.ReadAll(file)
+	if err != nil {
+		clilogger.Fatalln(err)
+	}
+	re := javascript.NewJSRE(ethereum)
+	utils.RegisterInterrupt(func(os.Signal) {
+		re.Stop()
+	})
+	re.Run(string(content))
+}
diff --git a/ethereum/flags.go b/cmd/ethereum/flags.go
index 58220f4e6..85aca47c3 100644
--- a/ethereum/flags.go
+++ b/cmd/ethereum/flags.go
@@ -1,13 +1,32 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package main
 
 import (
 	"flag"
 	"fmt"
+	"log"
 	"os"
 	"os/user"
 	"path"
 
-	"github.com/ethereum/eth-go/ethlog"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/vm"
 )
 
 var (
@@ -37,6 +56,7 @@ var (
 	Dump            bool
 	DumpHash        string
 	DumpNumber      int
+	VmType          int
 )
 
 // flags specific to cli client
@@ -59,12 +79,13 @@ func Init() {
 		flag.PrintDefaults()
 	}
 
+	flag.IntVar(&VmType, "vm", 0, "Virtual Machine type: 0-1: standard, debug")
 	flag.StringVar(&Identifier, "id", "", "Custom client identifier")
 	flag.StringVar(&KeyRing, "keyring", "", "identifier for keyring to use")
 	flag.StringVar(&KeyStore, "keystore", "db", "system to store keyrings: db|file (db)")
 	flag.StringVar(&OutboundPort, "port", "30303", "listening port")
 	flag.BoolVar(&UseUPnP, "upnp", false, "enable UPnP support")
-	flag.IntVar(&MaxPeer, "maxpeer", 10, "maximum desired peers")
+	flag.IntVar(&MaxPeer, "maxpeer", 30, "maximum desired peers")
 	flag.IntVar(&RpcPort, "rpcport", 8080, "port to start json-rpc server on")
 	flag.BoolVar(&StartRpc, "rpc", false, "start rpc server")
 	flag.BoolVar(&StartWebSockets, "ws", false, "start websocket server")
@@ -77,7 +98,7 @@ func Init() {
 	flag.StringVar(&Datadir, "datadir", defaultDataDir(), "specifies the datadir to use")
 	flag.StringVar(&ConfigFile, "conf", defaultConfigFile, "config file")
 	flag.StringVar(&DebugFile, "debug", "", "debug file (no debugging if not set)")
-	flag.IntVar(&LogLevel, "loglevel", int(ethlog.InfoLevel), "loglevel: 0-5: silent,error,warn,info,debug,debug detail)")
+	flag.IntVar(&LogLevel, "loglevel", int(logger.InfoLevel), "loglevel: 0-5: silent,error,warn,info,debug,debug detail)")
 	flag.BoolVar(&DiffTool, "difftool", false, "creates output for diff'ing. Sets LogLevel=0")
 	flag.StringVar(&DiffType, "diff", "all", "sets the level of diff output [vm, all]. Has no effect if difftool=false")
 	flag.BoolVar(&ShowGenesis, "genesis", false, "Dump the genesis block")
@@ -91,5 +112,9 @@ func Init() {
 
 	flag.Parse()
 
+	if VmType >= int(vm.MaxVmTy) {
+		log.Fatal("Invalid VM type ", VmType)
+	}
+
 	InputFile = flag.Arg(0)
 }
diff --git a/ethereum/main.go b/cmd/ethereum/main.go
index 0f0df20bb..2a3c46054 100644
--- a/ethereum/main.go
+++ b/cmd/ethereum/main.go
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package main
 
 import (
@@ -5,18 +22,18 @@ import (
 	"os"
 	"runtime"
 
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethlog"
-	"github.com/ethereum/eth-go/ethutil"
-	"github.com/ethereum/go-ethereum/utils"
+	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
 )
 
 const (
 	ClientIdentifier = "Ethereum(G)"
-	Version          = "0.6.7"
+	Version          = "0.7.10"
 )
 
-var logger = ethlog.NewLogger("CLI")
+var clilogger = logger.NewLogger("CLI")
 
 func main() {
 	runtime.GOMAXPROCS(runtime.NumCPU())
@@ -31,7 +48,7 @@ func main() {
 		LogLevel = 0
 	}
 
-	utils.InitConfig(ConfigFile, Datadir, "ETH")
+	utils.InitConfig(VmType, ConfigFile, Datadir, "ETH")
 	ethutil.Config.Diff = DiffTool
 	ethutil.Config.DiffType = DiffType
 
@@ -42,7 +59,7 @@ func main() {
 	db := utils.NewDatabase()
 	err := utils.DBSanityCheck(db)
 	if err != nil {
-		logger.Errorln(err)
+		fmt.Println(err)
 
 		os.Exit(1)
 	}
@@ -57,14 +74,14 @@ func main() {
 	ethereum := utils.NewEthereum(db, clientIdentity, keyManager, UseUPnP, OutboundPort, MaxPeer)
 
 	if Dump {
-		var block *ethchain.Block
+		var block *types.Block
 
 		if len(DumpHash) == 0 && DumpNumber == -1 {
-			block = ethereum.BlockChain().CurrentBlock
+			block = ethereum.ChainManager().CurrentBlock()
 		} else if len(DumpHash) > 0 {
-			block = ethereum.BlockChain().GetBlock(ethutil.Hex2Bytes(DumpHash))
+			block = ethereum.ChainManager().GetBlock(ethutil.Hex2Bytes(DumpHash))
 		} else {
-			block = ethereum.BlockChain().GetBlockByNumber(uint64(DumpNumber))
+			block = ethereum.ChainManager().GetBlockByNumber(uint64(DumpNumber))
 		}
 
 		if block == nil {
@@ -76,11 +93,14 @@ func main() {
 			os.Exit(1)
 		}
 
-		fmt.Printf("RLP: %x\nstate: %x\nhash: %x\n", ethutil.Rlp(block), block.GetRoot(), block.Hash())
+		// block.GetRoot() does not exist
+		//fmt.Printf("RLP: %x\nstate: %x\nhash: %x\n", ethutil.Rlp(block), block.GetRoot(), block.Hash())
 
 		// Leave the Println. This needs clean output for piping
 		fmt.Printf("%s\n", block.State().Dump())
 
+		fmt.Println(block)
+
 		os.Exit(0)
 	}
 
@@ -111,5 +131,5 @@ func main() {
 
 	// this blocks the thread
 	ethereum.WaitForShutdown()
-	ethlog.Flush()
+	logger.Flush()
 }
diff --git a/cmd/ethereum/repl/console_colors_windows.go b/cmd/ethereum/repl/console_colors_windows.go
new file mode 100644
index 000000000..8062746fb
--- /dev/null
+++ b/cmd/ethereum/repl/console_colors_windows.go
@@ -0,0 +1,97 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
+/* Inspired by https://github.com/xuyu/logging/blob/master/colorful_win.go */
+
+package ethrepl
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+type color uint16
+
+const (
+	green  = color(0x0002)
+	red    = color(0x0004)
+	yellow = color(0x000E)
+)
+
+const (
+	mask = uint16(yellow | green | red)
+)
+
+var (
+	kernel32                       = syscall.NewLazyDLL("kernel32.dll")
+	procGetStdHandle               = kernel32.NewProc("GetStdHandle")
+	procSetConsoleTextAttribute    = kernel32.NewProc("SetConsoleTextAttribute")
+	procGetConsoleScreenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo")
+	hStdout                        uintptr
+	initScreenInfo                 *consoleScreenBufferInfo
+)
+
+func setConsoleTextAttribute(hConsoleOutput uintptr, wAttributes uint16) bool {
+	ret, _, _ := procSetConsoleTextAttribute.Call(hConsoleOutput, uintptr(wAttributes))
+	return ret != 0
+}
+
+type coord struct {
+	X, Y int16
+}
+
+type smallRect struct {
+	Left, Top, Right, Bottom int16
+}
+
+type consoleScreenBufferInfo struct {
+	DwSize              coord
+	DwCursorPosition    coord
+	WAttributes         uint16
+	SrWindow            smallRect
+	DwMaximumWindowSize coord
+}
+
+func getConsoleScreenBufferInfo(hConsoleOutput uintptr) *consoleScreenBufferInfo {
+	var csbi consoleScreenBufferInfo
+	ret, _, _ := procGetConsoleScreenBufferInfo.Call(hConsoleOutput, uintptr(unsafe.Pointer(&csbi)))
+	if ret == 0 {
+		return nil
+	}
+	return &csbi
+}
+
+const (
+	stdOutputHandle = uint32(-11 & 0xFFFFFFFF)
+)
+
+func init() {
+	hStdout, _, _ = procGetStdHandle.Call(uintptr(stdOutputHandle))
+	initScreenInfo = getConsoleScreenBufferInfo(hStdout)
+}
+
+func resetColorful() {
+	if initScreenInfo == nil {
+		return
+	}
+	setConsoleTextAttribute(hStdout, initScreenInfo.WAttributes)
+}
+
+func changeColor(c color) {
+	attr := uint16(0) & ^mask | uint16(c)
+	setConsoleTextAttribute(hStdout, attr)
+}
diff --git a/ethereum/repl/repl.go b/cmd/ethereum/repl/repl.go
index d08feb7b4..a5146fecd 100644
--- a/ethereum/repl/repl.go
+++ b/cmd/ethereum/repl/repl.go
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package ethrepl
 
 import (
@@ -7,13 +24,13 @@ import (
 	"os"
 	"path"
 
-	"github.com/ethereum/eth-go"
-	"github.com/ethereum/eth-go/ethlog"
-	"github.com/ethereum/eth-go/ethutil"
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/ethutil"
 	"github.com/ethereum/go-ethereum/javascript"
+	"github.com/ethereum/go-ethereum/logger"
 )
 
-var logger = ethlog.NewLogger("REPL")
+var repllogger = logger.NewLogger("REPL")
 
 type Repl interface {
 	Start()
@@ -42,7 +59,7 @@ func NewJSRepl(ethereum *eth.Ethereum) *JSRepl {
 func (self *JSRepl) Start() {
 	if !self.running {
 		self.running = true
-		logger.Infoln("init JS Console")
+		repllogger.Infoln("init JS Console")
 		reader := bufio.NewReader(self.history)
 		for {
 			line, err := reader.ReadString('\n')
@@ -63,7 +80,7 @@ func (self *JSRepl) Stop() {
 	if self.running {
 		self.running = false
 		self.re.Stop()
-		logger.Infoln("exit JS Console")
+		repllogger.Infoln("exit JS Console")
 		self.history.Close()
 	}
 }
diff --git a/ethereum/repl/repl_darwin.go b/cmd/ethereum/repl/repl_darwin.go
index 4c07280f7..3710150cc 100644
--- a/ethereum/repl/repl_darwin.go
+++ b/cmd/ethereum/repl/repl_darwin.go
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package ethrepl
 
 // #cgo darwin CFLAGS: -I/usr/local/opt/readline/include
@@ -9,6 +26,7 @@ package ethrepl
 // #include <readline/history.h>
 import "C"
 import (
+	"fmt"
 	"os"
 	"os/signal"
 	"strings"
@@ -118,6 +136,9 @@ func (self *JSRepl) PrintValue(v interface{}) {
 	method, _ := self.re.Vm.Get("prettyPrint")
 	v, err := self.re.Vm.ToValue(v)
 	if err == nil {
-		method.Call(method, v)
+		val, err := method.Call(method, v)
+		if err == nil {
+			fmt.Printf("%v", val)
+		}
 	}
 }
diff --git a/ethereum/repl/repl_linux.go b/cmd/ethereum/repl/repl_linux.go
index 276f135d7..276f135d7 120000
--- a/ethereum/repl/repl_linux.go
+++ b/cmd/ethereum/repl/repl_linux.go
diff --git a/cmd/ethereum/repl/repl_windows.go b/cmd/ethereum/repl/repl_windows.go
new file mode 100644
index 000000000..d2c405ee9
--- /dev/null
+++ b/cmd/ethereum/repl/repl_windows.go
@@ -0,0 +1,92 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
+package ethrepl
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+)
+
+func (self *JSRepl) read() {
+	reader := bufio.NewReader(os.Stdin)
+	for {
+		fmt.Printf(self.prompt)
+		str, _, err := reader.ReadLine()
+		if err != nil {
+			fmt.Println("Error reading input", err)
+		} else {
+			if string(str) == "exit" {
+				self.Stop()
+				break
+			} else {
+				self.parseInput(string(str))
+			}
+		}
+	}
+}
+
+func addHistory(s string) {
+}
+
+func printColored(outputVal string) {
+	for outputVal != "" {
+		codePart := ""
+		if strings.HasPrefix(outputVal, "\033[32m") {
+			codePart = "\033[32m"
+			changeColor(2)
+		}
+		if strings.HasPrefix(outputVal, "\033[1m\033[30m") {
+			codePart = "\033[1m\033[30m"
+			changeColor(8)
+		}
+		if strings.HasPrefix(outputVal, "\033[31m") {
+			codePart = "\033[31m"
+			changeColor(red)
+		}
+		if strings.HasPrefix(outputVal, "\033[35m") {
+			codePart = "\033[35m"
+			changeColor(5)
+		}
+		if strings.HasPrefix(outputVal, "\033[0m") {
+			codePart = "\033[0m"
+			resetColorful()
+		}
+		textPart := outputVal[len(codePart):len(outputVal)]
+		index := strings.Index(textPart, "\033")
+		if index == -1 {
+			outputVal = ""
+		} else {
+			outputVal = textPart[index:len(textPart)]
+			textPart = textPart[0:index]
+		}
+		fmt.Printf("%v", textPart)
+	}
+}
+
+func (self *JSRepl) PrintValue(v interface{}) {
+	method, _ := self.re.Vm.Get("prettyPrint")
+	v, err := self.re.Vm.ToValue(v)
+	if err == nil {
+		val, err := method.Call(method, v)
+		if err == nil {
+			printColored(fmt.Sprintf("%v", val))
+		}
+	}
+}
diff --git a/cmd/ethtest/main.go b/cmd/ethtest/main.go
new file mode 100644
index 000000000..94ab779db
--- /dev/null
+++ b/cmd/ethtest/main.go
@@ -0,0 +1,128 @@
+/*
+	This file is part of go-ethereum
+
+	go-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	go-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @authors:
+ * 	Jeffrey Wilcke <i@jev.io>
+ * @date 2014
+ *
+ */
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/tests/helper"
+)
+
+type Account struct {
+	Balance string
+	Code    string
+	Nonce   string
+	Storage map[string]string
+}
+
+func StateObjectFromAccount(addr string, account Account) *state.StateObject {
+	obj := state.NewStateObject(ethutil.Hex2Bytes(addr))
+	obj.SetBalance(ethutil.Big(account.Balance))
+
+	if ethutil.IsHex(account.Code) {
+		account.Code = account.Code[2:]
+	}
+	obj.Code = ethutil.Hex2Bytes(account.Code)
+	obj.Nonce = ethutil.Big(account.Nonce).Uint64()
+
+	return obj
+}
+
+type VmTest struct {
+	Callcreates interface{}
+	Env         map[string]string
+	Exec        map[string]string
+	Gas         string
+	Out         string
+	Post        map[string]Account
+	Pre         map[string]Account
+}
+
+func RunVmTest(js string) (failed int) {
+	tests := make(map[string]VmTest)
+
+	data, _ := ioutil.ReadAll(strings.NewReader(js))
+	err := json.Unmarshal(data, &tests)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	for name, test := range tests {
+		state := state.New(helper.NewTrie())
+		for addr, account := range test.Pre {
+			obj := StateObjectFromAccount(addr, account)
+			state.SetStateObject(obj)
+		}
+
+		ret, _, gas, err := helper.RunVm(state, test.Env, test.Exec)
+		// When an error is returned it doesn't always mean the tests fails.
+		// Have to come up with some conditional failing mechanism.
+		if err != nil {
+			log.Println(err)
+		}
+
+		rexp := helper.FromHex(test.Out)
+		if bytes.Compare(rexp, ret) != 0 {
+			log.Printf("%s's return failed. Expected %x, got %x\n", name, rexp, ret)
+			failed = 1
+		}
+
+		gexp := ethutil.Big(test.Gas)
+		if gexp.Cmp(gas) != 0 {
+			log.Printf("%s's gas failed. Expected %v, got %v\n", name, gexp, gas)
+			failed = 1
+		}
+
+		for addr, account := range test.Post {
+			obj := state.GetStateObject(helper.FromHex(addr))
+			for addr, value := range account.Storage {
+				v := obj.GetState(helper.FromHex(addr)).Bytes()
+				vexp := helper.FromHex(value)
+
+				if bytes.Compare(v, vexp) != 0 {
+					log.Printf("%s's : (%x: %s) storage failed. Expected %x, got %x (%v %v)\n", name, obj.Address()[0:4], addr, vexp, v, ethutil.BigD(vexp), ethutil.BigD(v))
+					failed = 1
+				}
+			}
+		}
+	}
+
+	return
+}
+
+func main() {
+	helper.Logger.SetLogLevel(5)
+	if len(os.Args) == 1 {
+		log.Fatalln("no json supplied")
+	}
+
+	os.Exit(RunVmTest(os.Args[1]))
+}
diff --git a/cmd/evm/code.txt b/cmd/evm/code.txt
new file mode 100644
index 000000000..a964ad9d2
--- /dev/null
+++ b/cmd/evm/code.txt
@@ -0,0 +1 @@
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
diff --git a/cmd/evm/input.txt b/cmd/evm/input.txt
new file mode 100644
index 000000000..1b6857ab9
--- /dev/null
+++ b/cmd/evm/input.txt
@@ -0,0 +1 @@
+0000000000000000000000000000000000000000000000000000000000000000c80000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000050000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000700000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000009000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000b000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000000d000000000000000000000000000000000000000000000000000000000000000e000000000000000000000000000000000000000000000000000000000000000f0000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001100000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000013000000000000000000000000000000000000000000000000000000000000001400000000000000000000000000000000000000000000000000000000000000150000000000000000000000000000000000000000000000000000000000000016000000000000000000000000000000000000000000000000000000000000001700000000000000000000000000000000000000000000000000000000000000180000000000000000000000000000000000000000000000000000000000000019000000000000000000000000000000000000000000000000000000000000001a000000000000000000000000000000000000000000000000000000000000001b000000000000000000000000000000000000000000000000000000000000001c000000000000000000000000000000000000000000000000000000000000001d000000000000000000000000000000000000000000000000000000000000001e000000000000000000000000000000000000000000000000000000000000001f0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002100000000000000000000000000000000000000000000000000000000000000220000000000000000000000000000000000000000000000000000000000000023000000000000000000000000000000000000000000000000000000000000002400000000000000000000000000000000000000000000000000000000000000250000000000000000000000000000000000000000000000000000000000000026000000000000000000000000000000000000000000000000000000000000002700000000000000000000000000000000000000000000000000000000000000280000000000000000000000000000000000000000000000000000000000000029000000000000000000000000000000000000000000000000000000000000002a000000000000000000000000000000000000000000000000000000000000002b000000000000000000000000000000000000000000000000000000000000002c000000000000000000000000000000000000000000000000000000000000002d000000000000000000000000000000000000000000000000000000000000002e000000000000000000000000000000000000000000000000000000000000002f0000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000003100000000000000000000000000000000000000000000000000000000000000320000000000000000000000000000000000000000000000000000000000000033000000000000000000000000000000000000000000000000000000000000003400000000000000000000000000000000000000000000000000000000000000350000000000000000000000000000000000000000000000000000000000000036000000000000000000000000000000000000000000000000000000000000003700000000000000000000000000000000000000000000000000000000000000380000000000000000000000000000000000000000000000000000000000000039000000000000000000000000000000000000000000000000000000000000003a000000000000000000000000000000000000000000000000000000000000003b000000000000000000000000000000000000000000000000000000000000003c000000000000000000000000000000000000000000000000000000000000003d000000000000000000000000000000000000000000000000000000000000003e000000000000000000000000000000000000000000000000000000000000003f0000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000004100000000000000000000000000000000000000000000000000000000000000420000000000000000000000000000000000000000000000000000000000000043000000000000000000000000000000000000000000000000000000000000004400000000000000000000000000000000000000000000000000000000000000450000000000000000000000000000000000000000000000000000000000000046000000000000000000000000000000000000000000000000000000000000004700000000000000000000000000000000000000000000000000000000000000480000000000000000000000000000000000000000000000000000000000000049000000000000000000000000000000000000000000000000000000000000004a000000000000000000000000000000000000000000000000000000000000004b000000000000000000000000000000000000000000000000000000000000004c00000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diff --git a/cmd/evm/main.go b/cmd/evm/main.go
new file mode 100644
index 000000000..c6c986a04
--- /dev/null
+++ b/cmd/evm/main.go
@@ -0,0 +1,164 @@
+/*
+	This file is part of go-ethereum
+
+	go-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	go-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @authors
+ * 	Jeffrey Wilcke <i@jev.io>
+ * @date 2014
+ *
+ */
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"math/big"
+	"os"
+	"runtime"
+	"time"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/trie"
+	"github.com/ethereum/go-ethereum/vm"
+)
+
+var (
+	code     = flag.String("code", "", "evm code")
+	loglevel = flag.Int("log", 4, "log level")
+	gas      = flag.String("gas", "1000000000", "gas amount")
+	price    = flag.String("price", "0", "gas price")
+	value    = flag.String("value", "0", "tx value")
+	dump     = flag.Bool("dump", false, "dump state after run")
+	data     = flag.String("data", "", "data")
+)
+
+func perr(v ...interface{}) {
+	fmt.Println(v...)
+	//os.Exit(1)
+}
+
+func main() {
+	flag.Parse()
+
+	logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.LogLevel(*loglevel)))
+
+	ethutil.ReadConfig("/tmp/evmtest", "/tmp/evm", "")
+
+	db, _ := ethdb.NewMemDatabase()
+	statedb := state.New(trie.New(db, ""))
+	sender := statedb.NewStateObject([]byte("sender"))
+	receiver := statedb.NewStateObject([]byte("receiver"))
+	//receiver.SetCode([]byte(*code))
+	receiver.SetCode(ethutil.Hex2Bytes(*code))
+
+	vmenv := NewEnv(statedb, []byte("evmuser"), ethutil.Big(*value))
+
+	tstart := time.Now()
+
+	ret, e := vmenv.Call(sender, receiver.Address(), ethutil.Hex2Bytes(*data), ethutil.Big(*gas), ethutil.Big(*price), ethutil.Big(*value))
+
+	logger.Flush()
+	if e != nil {
+		perr(e)
+	}
+
+	if *dump {
+		fmt.Println(string(statedb.Dump()))
+	}
+
+	var mem runtime.MemStats
+	runtime.ReadMemStats(&mem)
+	fmt.Printf("vm took %v\n", time.Since(tstart))
+	fmt.Printf(`alloc:      %d
+tot alloc:  %d
+no. malloc: %d
+heap alloc: %d
+heap objs:  %d
+num gc:     %d
+`, mem.Alloc, mem.TotalAlloc, mem.Mallocs, mem.HeapAlloc, mem.HeapObjects, mem.NumGC)
+
+	fmt.Printf("%x\n", ret)
+}
+
+type VMEnv struct {
+	state *state.StateDB
+	block *types.Block
+
+	transactor []byte
+	value      *big.Int
+
+	depth int
+	Gas   *big.Int
+	time  int64
+}
+
+func NewEnv(state *state.StateDB, transactor []byte, value *big.Int) *VMEnv {
+	return &VMEnv{
+		state:      state,
+		transactor: transactor,
+		value:      value,
+		time:       time.Now().Unix(),
+	}
+}
+
+func (self *VMEnv) State() *state.StateDB { return self.state }
+func (self *VMEnv) Origin() []byte        { return self.transactor }
+func (self *VMEnv) BlockNumber() *big.Int { return ethutil.Big0 }
+func (self *VMEnv) PrevHash() []byte      { return make([]byte, 32) }
+func (self *VMEnv) Coinbase() []byte      { return self.transactor }
+func (self *VMEnv) Time() int64           { return self.time }
+func (self *VMEnv) Difficulty() *big.Int  { return ethutil.Big1 }
+func (self *VMEnv) BlockHash() []byte     { return make([]byte, 32) }
+func (self *VMEnv) Value() *big.Int       { return self.value }
+func (self *VMEnv) GasLimit() *big.Int    { return big.NewInt(1000000000) }
+func (self *VMEnv) Depth() int            { return 0 }
+func (self *VMEnv) SetDepth(i int)        { self.depth = i }
+func (self *VMEnv) AddLog(log state.Log) {
+	self.state.AddLog(log)
+}
+func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
+	return vm.Transfer(from, to, amount)
+}
+
+func (self *VMEnv) vm(addr, data []byte, gas, price, value *big.Int) *core.Execution {
+	evm := vm.New(self, vm.DebugVmTy)
+
+	return core.NewExecution(evm, addr, data, gas, price, value)
+}
+
+func (self *VMEnv) Call(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(addr, data, gas, price, value)
+	ret, err := exe.Call(addr, caller)
+	self.Gas = exe.Gas
+
+	return ret, err
+}
+func (self *VMEnv) CallCode(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(caller.Address(), data, gas, price, value)
+	return exe.Call(addr, caller)
+}
+
+func (self *VMEnv) Create(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ClosureRef) {
+	exe := self.vm(addr, data, gas, price, value)
+	return exe.Create(caller)
+}
diff --git a/mist/assets/back.png b/cmd/mist/assets/back.png
index 38fc84d6e..38fc84d6e 100644
--- a/mist/assets/back.png
+++ b/cmd/mist/assets/back.png
diff --git a/mist/assets/browser.png b/cmd/mist/assets/browser.png
index 1d7348170..1d7348170 100644
--- a/mist/assets/browser.png
+++ b/cmd/mist/assets/browser.png
diff --git a/mist/assets/bug.png b/cmd/mist/assets/bug.png
index f5e85dc99..f5e85dc99 100644
--- a/mist/assets/bug.png
+++ b/cmd/mist/assets/bug.png
diff --git a/mist/assets/close.png b/cmd/mist/assets/close.png
index 88df442c5..88df442c5 100644
--- a/mist/assets/close.png
+++ b/cmd/mist/assets/close.png
diff --git a/mist/assets/debugger/debugger.qml b/cmd/mist/assets/debugger/debugger.qml
index b30d20e6b..b30d20e6b 100644
--- a/mist/assets/debugger/debugger.qml
+++ b/cmd/mist/assets/debugger/debugger.qml
diff --git a/mist/assets/ext/big.js b/cmd/mist/assets/ext/big.js
index db633fd2f..daa8d7227 100644
--- a/mist/assets/ext/big.js
+++ b/cmd/mist/assets/ext/big.js
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 var bigInt = (function () {
     var base = 10000000, logBase = 7;
     var sign = {
diff --git a/cmd/mist/assets/ext/eth.js/.gitignore b/cmd/mist/assets/ext/eth.js/.gitignore
new file mode 100644
index 000000000..de3a847ac
--- /dev/null
+++ b/cmd/mist/assets/ext/eth.js/.gitignore
@@ -0,0 +1,14 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile ~/.gitignore_global
+
+/tmp
+*/**/*un~
+*un~
+.DS_Store
+*/**/.DS_Store
+ethereum/ethereum
+ethereal/ethereal
+
diff --git a/cmd/mist/assets/ext/eth.js/README.md b/cmd/mist/assets/ext/eth.js/README.md
new file mode 100644
index 000000000..86e2969be
--- /dev/null
+++ b/cmd/mist/assets/ext/eth.js/README.md
@@ -0,0 +1,18 @@
+# Ethereum JavaScript API
+
+This is the Ethereum compatible JavaScript API using `Promise`s
+which implements the [Generic JSON RPC](https://github.com/ethereum/wiki/wiki/Generic-JSON-RPC) spec.
+
+For an example see `index.html`.
+
+**Please note this repo is in it's early stage.**
+
+If you'd like to run a WebSocket ethereum node check out
+[go-ethereum](https://github.com/ethereum/go-ethereum).
+
+To install ethereum and spawn a node:
+
+```
+go get github.com/ethereum/go-ethereum/ethereum
+ethereum -ws -loglevel=4
+```
diff --git a/cmd/mist/assets/ext/eth.js/httprpc.js b/cmd/mist/assets/ext/eth.js/httprpc.js
new file mode 100644
index 000000000..085b4693d
--- /dev/null
+++ b/cmd/mist/assets/ext/eth.js/httprpc.js
@@ -0,0 +1,70 @@
+(function () {
+    var HttpRpcProvider = function (host) {
+        this.handlers = [];
+        this.host = host;
+    };
+
+    function formatJsonRpcObject(object) {
+        return {
+            jsonrpc: '2.0',
+            method: object.call,
+            params: object.args,
+            id: object._id
+        }
+    };
+
+    function formatJsonRpcMessage(message) {    
+        var object = JSON.parse(message);
+       
+        return {
+            _id: object.id,
+            data: object.result
+        };
+    };
+
+    HttpRpcProvider.prototype.sendRequest = function (payload, cb) {
+        var data = formatJsonRpcObject(payload);
+
+        var request = new XMLHttpRequest();
+        request.open("POST", this.host, true);
+        request.send(JSON.stringify(data));
+        request.onreadystatechange = function () {
+            if (request.readyState === 4 && cb) {
+                cb(request);
+            }
+        }
+    };
+
+    HttpRpcProvider.prototype.send = function (payload) {
+        var self = this;
+        this.sendRequest(payload, function (request) {
+            self.handlers.forEach(function (handler) {
+                handler.call(self, formatJsonRpcMessage(request.responseText));
+            });
+        });
+    };
+
+    HttpRpcProvider.prototype.poll = function (payload, id) {
+        var self = this;
+        this.sendRequest(payload, function (request) {
+            var parsed = JSON.parse(request.responseText);
+            if (parsed.result instanceof Array ? parsed.result.length === 0 : !parsed.result) {
+                return;
+            }
+            self.handlers.forEach(function (handler) {
+                handler.call(self, {_event: payload.call, _id: id, data: parsed.result});
+            });
+        });
+    };
+
+    Object.defineProperty(HttpRpcProvider.prototype, "onmessage", {
+        set: function (handler) {
+            this.handlers.push(handler);
+        }
+    });
+
+    if (typeof(web3) !== "undefined" && web3.providers !== undefined) {
+        web3.providers.HttpRpcProvider = HttpRpcProvider;
+    }
+})();
+
diff --git a/cmd/mist/assets/ext/eth.js/index.html b/cmd/mist/assets/ext/eth.js/index.html
new file mode 100644
index 000000000..2b3f50a14
--- /dev/null
+++ b/cmd/mist/assets/ext/eth.js/index.html
@@ -0,0 +1,33 @@
+<!doctype>
+<html>
+
+<head>
+<script type="text/javascript" src="main.js"></script>
+<script type="text/javascript" src="websocket.js"></script>
+<script type="text/javascript" src="qt.js"></script>
+<script type="text/javascript" src="httprpc.js"></script>
+<script type="text/javascript">
+function registerName() {
+    var name = document.querySelector("#name").value;
+    name = web3.fromAscii(name);
+
+    var eth = web3.eth;
+    eth.transact({to: "NameReg", gas: "10000", gasPrice: eth.gasPrice, data: [web3.fromAscii("register"), name]}).then(function(tx) {
+        document.querySelector("#result").innerHTML = "Registered name. Please wait for the next block to come through.";
+    }, function(err) {
+        console.log(err); 
+    });
+}
+</script>
+</head>
+
+<body>
+
+<h1>std::name_reg</h1>
+<input type="text" id="name"></input>
+<input type="submit" onClick="registerName();"></input>
+<div id="result"></div>
+
+</body>
+
+</html>
diff --git a/cmd/mist/assets/ext/eth.js/main.js b/cmd/mist/assets/ext/eth.js/main.js
new file mode 100644
index 000000000..5c7ca0603
--- /dev/null
+++ b/cmd/mist/assets/ext/eth.js/main.js
@@ -0,0 +1,432 @@
+(function(window) {
+    function isPromise(o) {
+        return o instanceof Promise
+    }
+
+    function flattenPromise (obj) {
+        if (obj instanceof Promise) {
+            return Promise.resolve(obj);
+        }
+
+        if (obj instanceof Array) {
+            return new Promise(function (resolve) {
+                var promises = obj.map(function (o) {
+                    return flattenPromise(o);
+                });
+
+                return Promise.all(promises).then(function (res) {
+                    for (var i = 0; i < obj.length; i++) {
+                        obj[i] = res[i];
+                    }
+                    resolve(obj);
+                });
+            });
+        }
+        
+        if (obj instanceof Object) {
+            return new Promise(function (resolve) {
+                var keys = Object.keys(obj);
+                var promises = keys.map(function (key) {
+                    return flattenPromise(obj[key]);
+                });
+
+                return Promise.all(promises).then(function (res) {
+                    for (var i = 0; i < keys.length; i++) {
+                        obj[keys[i]] = res[i];
+                    }
+                    resolve(obj);
+                });
+            });
+        }
+
+        return Promise.resolve(obj);
+    };
+
+    var ethMethods = function () {
+        var blockCall = function (args) {
+            return typeof args[0] === "string" ? "blockByHash" : "blockByNumber";
+        };
+
+        var transactionCall = function (args) {
+            return typeof args[0] === "string" ? 'transactionByHash' : 'transactionByNumber';   
+        };
+
+        var uncleCall = function (args) {
+            return typeof args[0] === "string" ? 'uncleByHash' : 'uncleByNumber';       
+        };
+
+        var methods = [
+        { name: 'balanceAt', call: 'balanceAt' },
+        { name: 'stateAt', call: 'stateAt' },
+        { name: 'countAt', call: 'countAt'},
+        { name: 'codeAt', call: 'codeAt' },
+        { name: 'transact', call: 'transact' },
+        { name: 'call', call: 'call' },
+        { name: 'block', call: blockCall },
+        { name: 'transaction', call: transactionCall },
+        { name: 'uncle', call: uncleCall },
+        { name: 'compile', call: 'compile' }
+        ];
+        return methods;
+    };
+
+    var ethProperties = function () {
+        return [
+        { name: 'coinbase', getter: 'coinbase', setter: 'setCoinbase' },
+        { name: 'listening', getter: 'listening', setter: 'setListening' },
+        { name: 'mining', getter: 'mining', setter: 'setMining' },
+        { name: 'gasPrice', getter: 'gasPrice' },
+        { name: 'account', getter: 'account' },
+        { name: 'accounts', getter: 'accounts' },
+        { name: 'peerCount', getter: 'peerCount' },
+        { name: 'defaultBlock', getter: 'defaultBlock', setter: 'setDefaultBlock' },
+        { name: 'number', getter: 'number'}
+        ];
+    };
+
+    var dbMethods = function () {
+        return [
+        { name: 'put', call: 'put' },
+        { name: 'get', call: 'get' },
+        { name: 'putString', call: 'putString' },
+        { name: 'getString', call: 'getString' }
+        ];
+    };
+
+    var shhMethods = function () {
+        return [
+        { name: 'post', call: 'post' },
+        { name: 'newIdentity', call: 'newIdentity' },
+        { name: 'haveIdentity', call: 'haveIdentity' },
+        { name: 'newGroup', call: 'newGroup' },
+        { name: 'addToGroup', call: 'addToGroup' }
+        ];
+    };
+
+    var ethWatchMethods = function () {
+        var newFilter = function (args) {
+            return typeof args[0] === 'string' ? 'newFilterString' : 'newFilter';
+        };
+
+        return [
+        { name: 'newFilter', call: newFilter },
+        { name: 'uninstallFilter', call: 'uninstallFilter' },
+        { name: 'getMessages', call: 'getMessages' }
+        ];
+    };
+
+    var shhWatchMethods = function () {
+        return [
+        { name: 'newFilter', call: 'shhNewFilter' },
+        { name: 'uninstallFilter', call: 'shhUninstallFilter' },
+        { name: 'getMessage', call: 'shhGetMessages' }
+        ];
+    };
+
+    var setupMethods = function (obj, methods) {
+        methods.forEach(function (method) {
+            obj[method.name] = function () {
+                return flattenPromise(Array.prototype.slice.call(arguments)).then(function (args) {
+                    var call = typeof method.call === "function" ? method.call(args) : method.call; 
+                    return {call: call, args: args};
+                }).then(function (request) {
+                    return new Promise(function (resolve, reject) {
+                        web3.provider.send(request, function (result) {
+                            //if (result || typeof result === "boolean") {
+                                resolve(result);
+                                return;
+                            //} 
+                            //reject(result);
+                        });
+                    });
+                }).catch(function( err) {
+                    console.error(err);
+                });
+            };
+        });
+    };
+
+    var setupProperties = function (obj, properties) {
+        properties.forEach(function (property) {
+            var proto = {};
+            proto.get = function () {
+                return new Promise(function(resolve, reject) {
+                    web3.provider.send({call: property.getter}, function(result) {
+                        resolve(result);
+                    });
+                });
+            };
+            if (property.setter) {
+                proto.set = function (val) {
+                    return flattenPromise([val]).then(function (args) {
+                        return new Promise(function (resolve) {
+                            web3.provider.send({call: property.setter, args: args}, function (result) {
+                                resolve(result);
+                            });
+                        });
+                    }).catch(function (err) {
+                        console.error(err);
+                    });
+                }
+            }
+            Object.defineProperty(obj, property.name, proto);
+        });
+    };
+    
+    var web3 = {
+        _callbacks: {},
+        _events: {},
+        providers: {},
+        toHex: function(str) {
+            var hex = "";
+            for(var i = 0; i < str.length; i++) {
+                var n = str.charCodeAt(i).toString(16);
+                hex += n.length < 2 ? '0' + n : n;
+            }
+
+            return hex;
+        },
+
+        toAscii: function(hex) {
+            // Find termination
+            var str = "";
+            var i = 0, l = hex.length;
+            for(; i < l; i+=2) {
+                var code = hex.charCodeAt(i)
+                if(code == 0) {
+                    break;
+                }
+
+                str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
+            }
+
+            return str;
+        },
+
+        toDecimal: function (val) {
+            return parseInt(val, 16);         
+        },
+
+        fromAscii: function(str, pad) {
+            pad = pad === undefined ? 32 : pad;
+            var hex = this.toHex(str);
+            while(hex.length < pad*2)
+                hex += "00";
+            return hex
+        },
+
+        eth: {
+            prototype: Object(),
+            watch: function (params) {
+                return new Filter(params, ethWatch);
+            },
+        },
+
+        db: {
+            prototype: Object()
+        },
+
+        shh: {
+            prototype: Object(),
+            watch: function (params) {
+                return new Filter(params, shhWatch);
+            }
+        },
+
+        on: function(event, id, cb) {
+            if(web3._events[event] === undefined) {
+                web3._events[event] = {};
+            }
+
+            web3._events[event][id] = cb;
+            return this
+        },
+
+        off: function(event, id) {
+            if(web3._events[event] !== undefined) {
+                delete web3._events[event][id];
+            }
+
+            return this
+        },
+
+        trigger: function(event, id, data) {
+            var callbacks = web3._events[event];
+            if (!callbacks || !callbacks[id]) {
+                return;
+            }
+            var cb = callbacks[id];
+            cb(data);
+        },
+    };
+
+    var eth = web3.eth;
+    setupMethods(eth, ethMethods());
+    setupProperties(eth, ethProperties());
+    setupMethods(web3.db, dbMethods());
+    setupMethods(web3.shh, shhMethods());
+
+    var ethWatch = {
+        changed: 'changed'
+    };
+    setupMethods(ethWatch, ethWatchMethods());
+    var shhWatch = {
+        changed: 'shhChanged'
+    };
+    setupMethods(shhWatch, shhWatchMethods());
+
+    var ProviderManager = function() {
+        this.queued = [];
+        this.polls = [];
+        this.ready = false;
+        this.provider = undefined;
+        this.id = 1;
+
+        var self = this;
+        var poll = function () {
+            if (self.provider && self.provider.poll) {
+                self.polls.forEach(function (data) {
+                    data.data._id = self.id; 
+                    self.id++;
+                    self.provider.poll(data.data, data.id);
+                });
+            }
+            setTimeout(poll, 12000);
+        };
+        poll();
+    };
+
+    ProviderManager.prototype.send = function(data, cb) {
+        data._id = this.id;
+        if (cb) {
+            web3._callbacks[data._id] = cb;
+        }
+
+        data.args = data.args || [];
+        this.id++;
+
+        if(this.provider !== undefined) {
+            this.provider.send(data);
+        } else {
+            console.warn("provider is not set");
+            this.queued.push(data);
+        }
+    };
+
+    ProviderManager.prototype.set = function(provider) {
+        if(this.provider !== undefined && this.provider.unload !== undefined) {
+            this.provider.unload();
+        }
+
+        this.provider = provider;
+        this.ready = true;
+    };
+
+    ProviderManager.prototype.sendQueued = function() {
+        for(var i = 0; this.queued.length; i++) {
+            // Resend
+            this.send(this.queued[i]);
+        }
+    };
+
+    ProviderManager.prototype.installed = function() {
+        return this.provider !== undefined;
+    };
+
+    ProviderManager.prototype.startPolling = function (data, pollId) {
+        if (!this.provider || !this.provider.poll) {
+            return;
+        }
+        this.polls.push({data: data, id: pollId});
+    };
+
+    ProviderManager.prototype.stopPolling = function (pollId) {
+        for (var i = this.polls.length; i--;) {
+            var poll = this.polls[i];
+            if (poll.id === pollId) {
+                this.polls.splice(i, 1);
+            }
+        }
+    };
+
+    web3.provider = new ProviderManager();
+
+    web3.setProvider = function(provider) {
+        provider.onmessage = messageHandler;
+        web3.provider.set(provider);
+        web3.provider.sendQueued();
+    };
+
+    var Filter = function(options, impl) {
+        this.impl = impl;
+        this.callbacks = [];
+
+        var self = this; 
+        this.promise = impl.newFilter(options); 
+        this.promise.then(function (id) {
+            self.id = id;
+            web3.on(impl.changed, id, self.trigger.bind(self));
+            web3.provider.startPolling({call: impl.changed, args: [id]}, id);
+        });
+    };
+
+    Filter.prototype.arrived = function(callback) {
+        this.changed(callback);
+    }
+
+    Filter.prototype.changed = function(callback) {
+        var self = this;
+        this.promise.then(function(id) {
+            self.callbacks.push(callback);
+        });
+    };
+
+    Filter.prototype.trigger = function(messages) {
+        for(var i = 0; i < this.callbacks.length; i++) {
+            this.callbacks[i].call(this, messages);
+        }
+    };
+
+    Filter.prototype.uninstall = function() {
+        var self = this;
+        this.promise.then(function (id) {
+            self.impl.uninstallFilter(id);
+            web3.provider.stopPolling(id);
+            web3.off(impl.changed, id);
+        });
+    };
+
+    Filter.prototype.messages = function() {
+        var self = this;    
+        return this.promise.then(function (id) {
+            return self.impl.getMessages(id);
+        });
+    };
+
+    function messageHandler(data) {
+        if(data._event !== undefined) {
+            web3.trigger(data._event, data._id, data.data);
+            return;
+        }
+        
+        if(data._id) {
+            var cb = web3._callbacks[data._id];
+            if (cb) {
+                cb.call(this, data.data)
+                delete web3._callbacks[data._id];
+            }
+        }
+    }
+
+    /*
+    // Install default provider
+    if(!web3.provider.installed()) {
+        var sock = new web3.WebSocket("ws://localhost:40404/eth");
+
+        web3.setProvider(sock);
+    }
+    */
+
+    window.web3 = web3;
+
+})(this);
diff --git a/cmd/mist/assets/ext/eth.js/qt.js b/cmd/mist/assets/ext/eth.js/qt.js
new file mode 100644
index 000000000..644c37737
--- /dev/null
+++ b/cmd/mist/assets/ext/eth.js/qt.js
@@ -0,0 +1,27 @@
+(function() {
+    var QtProvider = function() {
+        this.handlers = [];
+        
+        var self = this;
+        navigator.qt.onmessage = function (message) {
+            self.handlers.forEach(function (handler) {
+                handler.call(self, JSON.parse(message.data));
+            });
+        }
+    };
+
+    QtProvider.prototype.send = function(payload) {
+        navigator.qt.postMessage(JSON.stringify(payload));
+    };
+
+    Object.defineProperty(QtProvider.prototype, "onmessage", {
+        set: function(handler) {
+            this.handlers.push(handler);
+        },
+    }); 
+
+    if(typeof(web3) !== "undefined" && web3.providers !== undefined) {
+        web3.providers.QtProvider = QtProvider;
+    }
+})();
+
diff --git a/cmd/mist/assets/ext/eth.js/websocket.js b/cmd/mist/assets/ext/eth.js/websocket.js
new file mode 100644
index 000000000..732a086f2
--- /dev/null
+++ b/cmd/mist/assets/ext/eth.js/websocket.js
@@ -0,0 +1,51 @@
+(function() {
+    var WebSocketProvider = function(host) {
+        // onmessage handlers
+        this.handlers = [];
+        // queue will be filled with messages if send is invoked before the ws is ready
+        this.queued = [];
+        this.ready = false;
+
+        this.ws = new WebSocket(host);
+
+        var self = this;
+        this.ws.onmessage = function(event) {
+            for(var i = 0; i < self.handlers.length; i++) {
+                self.handlers[i].call(self, JSON.parse(event.data), event)
+            }
+        };
+
+        this.ws.onopen = function() {
+            self.ready = true;
+
+            for(var i = 0; i < self.queued.length; i++) {
+                // Resend
+                self.send(self.queued[i]);
+            }
+        };
+    };
+    WebSocketProvider.prototype.send = function(payload) {
+        if(this.ready) {
+            var data = JSON.stringify(payload);
+
+            this.ws.send(data);
+        } else {
+            this.queued.push(payload);
+        }
+    };
+
+    WebSocketProvider.prototype.onMessage = function(handler) {
+        this.handlers.push(handler);
+    };
+
+    WebSocketProvider.prototype.unload = function() {
+        this.ws.close();
+    };
+    Object.defineProperty(WebSocketProvider.prototype, "onmessage", {
+        set: function(provider) { this.onMessage(provider); }
+    });
+
+    if(typeof(web3) !== "undefined" && web3.providers !== undefined) {
+        web3.providers.WebSocketProvider = WebSocketProvider;
+    }
+})();
diff --git a/mist/assets/ext/ethereum.js b/cmd/mist/assets/ext/ethereum.js
index 697a404a3..aeb79e488 100644
--- a/mist/assets/ext/ethereum.js
+++ b/cmd/mist/assets/ext/ethereum.js
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 // Main Ethereum library
 window.eth = {
 	prototype: Object(),
diff --git a/mist/assets/ext/filter.js b/cmd/mist/assets/ext/filter.js
index c23706249..f8529c54b 100644
--- a/mist/assets/ext/filter.js
+++ b/cmd/mist/assets/ext/filter.js
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 var ethx = {
     prototype: Object,
 
diff --git a/mist/assets/ext/home.html b/cmd/mist/assets/ext/home.html
index a524e8403..a524e8403 100644
--- a/mist/assets/ext/home.html
+++ b/cmd/mist/assets/ext/home.html
diff --git a/mist/assets/ext/html_messaging.js b/cmd/mist/assets/ext/html_messaging.js
index 91310e998..f58eb7c29 100644
--- a/mist/assets/ext/html_messaging.js
+++ b/cmd/mist/assets/ext/html_messaging.js
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 // The magic return variable. The magic return variable will be set during the execution of the QML call.
 (function(window) {
 	var Promise = window.Promise;
diff --git a/cmd/mist/assets/ext/http.js b/cmd/mist/assets/ext/http.js
new file mode 100644
index 000000000..81908266f
--- /dev/null
+++ b/cmd/mist/assets/ext/http.js
@@ -0,0 +1,30 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
+// this function is included locally, but you can also include separately via a header definition
+function request(url, callback) {
+	var xhr = new XMLHttpRequest();
+	xhr.onreadystatechange = (function(req) {
+		return function() {
+			if(req.readyState === 4) {
+				callback(req);
+			}
+		}
+	})(xhr);
+	xhr.open('GET', url, true);
+	xhr.send('');
+}
diff --git a/mist/assets/ext/q.js b/cmd/mist/assets/ext/q.js
index 23c4245ee..23c4245ee 100644
--- a/mist/assets/ext/q.js
+++ b/cmd/mist/assets/ext/q.js
diff --git a/cmd/mist/assets/ext/qml_messaging.js b/cmd/mist/assets/ext/qml_messaging.js
new file mode 100644
index 000000000..031c5efd1
--- /dev/null
+++ b/cmd/mist/assets/ext/qml_messaging.js
@@ -0,0 +1,30 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
+function HandleMessage(data) {
+	var message;
+	try { message = JSON.parse(data) } catch(e) {};
+
+	if(message) {
+		switch(message.type) {
+			case "coinbase":
+				return eth.coinBase();
+			case "block":
+				return eth.blockByNumber(0);
+		}
+	}
+}
diff --git a/cmd/mist/assets/ext/qt_messaging_adapter.js b/cmd/mist/assets/ext/qt_messaging_adapter.js
new file mode 100644
index 000000000..04f8e034a
--- /dev/null
+++ b/cmd/mist/assets/ext/qt_messaging_adapter.js
@@ -0,0 +1,38 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
+window._messagingAdapter = function(data) {
+	navigator.qt.postMessage(data);
+};
+
+navigator.qt.onmessage = function(ev) {
+	var data = JSON.parse(ev.data)
+
+	if(data._event !== undefined) {
+		eth.trigger(data._event, data.data);
+	} else {
+		if(data._seed) {
+			var cb = eth._callbacks[data._seed];
+			if(cb) {
+				cb.call(this, data.data)
+
+				// Remove the "trigger" callback
+				delete eth._callbacks[ev._seed];
+			}
+		}
+	}
+}
diff --git a/cmd/mist/assets/ext/setup.js b/cmd/mist/assets/ext/setup.js
new file mode 100644
index 000000000..8317937b3
--- /dev/null
+++ b/cmd/mist/assets/ext/setup.js
@@ -0,0 +1,8 @@
+(function() {
+    if (typeof(Promise) === "undefined")
+        window.Promise = Q.Promise;
+
+    var eth = web3.eth;
+
+    web3.setProvider(new web3.providers.QtProvider());
+})()
diff --git a/mist/assets/ext/string.js b/cmd/mist/assets/ext/string.js
index 2473b5c36..e8dbd14d4 100644
--- a/mist/assets/ext/string.js
+++ b/cmd/mist/assets/ext/string.js
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 String.prototype.pad = function(l, r) {
 	if (r === undefined) {
 		r = l
diff --git a/mist/assets/ext/test.html b/cmd/mist/assets/ext/test.html
index 4bac7d36f..4bac7d36f 100644
--- a/mist/assets/ext/test.html
+++ b/cmd/mist/assets/ext/test.html
diff --git a/mist/assets/facet.png b/cmd/mist/assets/facet.png
index 49a266e96..49a266e96 100644
--- a/mist/assets/facet.png
+++ b/cmd/mist/assets/facet.png
diff --git a/mist/assets/heart.png b/cmd/mist/assets/heart.png
index 3c874ab7f..3c874ab7f 100644
--- a/mist/assets/heart.png
+++ b/cmd/mist/assets/heart.png
diff --git a/mist/assets/icecream.png b/cmd/mist/assets/icecream.png
index 2438ca845..2438ca845 100644
--- a/mist/assets/icecream.png
+++ b/cmd/mist/assets/icecream.png
diff --git a/cmd/mist/assets/miner.png b/cmd/mist/assets/miner.png
new file mode 100644
index 000000000..58e3f4dfe
--- /dev/null
+++ b/cmd/mist/assets/miner.png
diff --git a/mist/assets/muted/codemirror.css b/cmd/mist/assets/muted/codemirror.css
index 098a317a2..098a317a2 100644
--- a/mist/assets/muted/codemirror.css
+++ b/cmd/mist/assets/muted/codemirror.css
diff --git a/mist/assets/muted/debugger.html b/cmd/mist/assets/muted/debugger.html
index b7552f030..b7552f030 100644
--- a/mist/assets/muted/debugger.html
+++ b/cmd/mist/assets/muted/debugger.html
diff --git a/mist/assets/muted/eclipse.css b/cmd/mist/assets/muted/eclipse.css
index 317218e3d..317218e3d 100644
--- a/mist/assets/muted/eclipse.css
+++ b/cmd/mist/assets/muted/eclipse.css
diff --git a/mist/assets/muted/index.html b/cmd/mist/assets/muted/index.html
index 14949b5ac..14949b5ac 100644
--- a/mist/assets/muted/index.html
+++ b/cmd/mist/assets/muted/index.html
diff --git a/mist/assets/muted/lib/codemirror.js b/cmd/mist/assets/muted/lib/codemirror.js
index 0ab217711..0ab217711 100644
--- a/mist/assets/muted/lib/codemirror.js
+++ b/cmd/mist/assets/muted/lib/codemirror.js
diff --git a/mist/assets/muted/lib/go.js b/cmd/mist/assets/muted/lib/go.js
index 9f1c1c4ab..9f1c1c4ab 100644
--- a/mist/assets/muted/lib/go.js
+++ b/cmd/mist/assets/muted/lib/go.js
diff --git a/mist/assets/muted/lib/matchbrackets.js b/cmd/mist/assets/muted/lib/matchbrackets.js
index dcdde81df..dcdde81df 100644
--- a/mist/assets/muted/lib/matchbrackets.js
+++ b/cmd/mist/assets/muted/lib/matchbrackets.js
diff --git a/mist/assets/muted/muted.js b/cmd/mist/assets/muted/muted.js
index 72e858d7a..467411577 100644
--- a/mist/assets/muted/muted.js
+++ b/cmd/mist/assets/muted/muted.js
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 // Helper function for generating pseudo callbacks and sending data to the QML part of the application
 function postData(data, cb) {
 	data._seed = Math.floor(Math.random() * 1000000)
diff --git a/mist/assets/net.png b/cmd/mist/assets/net.png
index 65a20ea00..65a20ea00 100644
--- a/mist/assets/net.png
+++ b/cmd/mist/assets/net.png
diff --git a/mist/assets/network.png b/cmd/mist/assets/network.png
index 0a9ffe2ec..0a9ffe2ec 100644
--- a/mist/assets/network.png
+++ b/cmd/mist/assets/network.png
diff --git a/mist/assets/new.png b/cmd/mist/assets/new.png
index e80096748..e80096748 100644
--- a/mist/assets/new.png
+++ b/cmd/mist/assets/new.png
diff --git a/mist/assets/pick.png b/cmd/mist/assets/pick.png
index 2f5a261c2..2f5a261c2 100644
--- a/mist/assets/pick.png
+++ b/cmd/mist/assets/pick.png
diff --git a/mist/assets/qml/QmlApp.qml b/cmd/mist/assets/qml/QmlApp.qml
index f5c503f4c..f5c503f4c 100644
--- a/mist/assets/qml/QmlApp.qml
+++ b/cmd/mist/assets/qml/QmlApp.qml
diff --git a/mist/assets/qml/first_run.qml b/cmd/mist/assets/qml/first_run.qml
index 0b1dac4c6..0b1dac4c6 100644
--- a/mist/assets/qml/first_run.qml
+++ b/cmd/mist/assets/qml/first_run.qml
diff --git a/mist/assets/qml/main.qml b/cmd/mist/assets/qml/main.qml
index 3d9204ce8..a08a8b4ef 100644
--- a/mist/assets/qml/main.qml
+++ b/cmd/mist/assets/qml/main.qml
@@ -12,7 +12,6 @@ import "../ext/http.js" as Http
 ApplicationWindow {
 	id: root
 
-	property alias miningButtonText: miningButton.text
 	property var ethx : Eth.ethx
 	property var browser
 
@@ -48,12 +47,12 @@ ApplicationWindow {
 		var wallet = addPlugin("./views/wallet.qml", {noAdd: true, close: false, section: "ethereum", active: true});
 		var browser = addPlugin("./webapp.qml", {noAdd: true, close: false, section: "ethereum", active: true});
 		root.browser = browser;
+		addPlugin("./views/miner.qml", {noAdd: true, close: false, section: "ethereum", active: true});
 
 		addPlugin("./views/transaction.qml", {noAdd: true, close: false, section: "legacy"});
 		addPlugin("./views/chain.qml", {noAdd: true, close: false, section: "legacy"});
-		addPlugin("./views/info.qml", {noAdd: true, close: false, section: "legacy"});
 		addPlugin("./views/pending_tx.qml", {noAdd: true, close: false, section: "legacy"});
-		addPlugin("./views/javascript.qml", {noAdd: true, close: false, section: "legacy"});
+		addPlugin("./views/info.qml", {noAdd: true, close: false, section: "legacy"});
 
 		addPlugin("./views/jeffcoin/jeffcoin.qml", {noAdd: true, close: false, section: "apps"})
 
@@ -253,29 +252,18 @@ ApplicationWindow {
 	}
 
 	statusBar: StatusBar {
-		height: 32
+		//height: 32
 		id: statusBar
-		RowLayout {
-			Button {
-				id: miningButton
-				text: "Start Mining"
-				onClicked: {
-					gui.toggleMining()
-				}
-			}
-
-			RowLayout {
-				Label {
-					id: walletValueLabel
+		Label {
+			//y: 6
+			id: walletValueLabel
 
-					font.pixelSize: 10
-					styleColor: "#797979"
-				}
-			}
+			font.pixelSize: 10
+			styleColor: "#797979"
 		}
 
 		Label {
-			y: 6
+			//y: 6
 			objectName: "miningLabel"
 			visible: true
 			font.pixelSize: 10
@@ -284,7 +272,7 @@ ApplicationWindow {
 		}
 
 		Label {
-			y: 6
+			//y: 6
 			id: lastBlockLabel
 			objectName: "lastBlockLabel"
 			visible: true
@@ -298,14 +286,14 @@ ApplicationWindow {
 			id: downloadIndicator
 			value: 0
 			objectName: "downloadIndicator"
-			y: 3
+			y: -4
 			x: statusBar.width / 2 - this.width / 2
 			width: 160
 		}
 
 		Label {
 			objectName: "downloadLabel"
-			y: 7
+			//y: 7
 			anchors.left: downloadIndicator.right
 			anchors.leftMargin: 5
 			font.pixelSize: 10
@@ -315,7 +303,7 @@ ApplicationWindow {
 
 		RowLayout {
 			id: peerGroup
-			y: 7
+			//y: 7
 			anchors.right: parent.right
 			MouseArea {
 				onDoubleClicked:  peerWindow.visible = true
@@ -324,14 +312,9 @@ ApplicationWindow {
 
 			Label {
 				id: peerLabel
-				font.pixelSize: 8
+				font.pixelSize: 10
 				text: "0 / 0"
 			}
-			Image {
-				id: peerImage
-				width: 10; height: 10
-				source: "../network.png"
-			}
 		}
 	}
 
@@ -363,12 +346,7 @@ ApplicationWindow {
 			view.visible = false
 			view.anchors.fill = mainView
 
-			if( !view.hasOwnProperty("iconSource") ) {
-				console.log("Could not load plugin. Property 'iconSourc' not found on view.");
-				return;
-			}
-
-			var menuItem = menu.createMenuItem(view.iconSource, view, options);
+			var menuItem = menu.createMenuItem(view, options);
 			if( view.hasOwnProperty("menuItem") ) {
 				view.menuItem = menuItem;
 			}
@@ -525,7 +503,7 @@ ApplicationWindow {
 				 }
 			 }
 
-			 function createMenuItem(icon, view, options) {
+			 function createMenuItem(view, options) {
 				 if(options === undefined) {
 					 options = {};
 				 }
@@ -547,7 +525,10 @@ ApplicationWindow {
 
 				 comp.view = view
 				 comp.title = view.title
-				 comp.icon = view.iconSource
+
+				 if(view.hasOwnProperty("iconSource")) {
+					 comp.icon = view.iconSource;
+				 }
 				 comp.closable = options.close;
 
 				 return comp
@@ -805,8 +786,8 @@ ApplicationWindow {
 		     title: "About"
 		     minimumWidth: 350
 		     maximumWidth: 350
-		     maximumHeight: 200
-		     minimumHeight: 200
+		     maximumHeight: 280
+		     minimumHeight: 280
 
 		     Image {
 			     id: aboutIcon
@@ -816,7 +797,7 @@ ApplicationWindow {
 			     smooth: true
 			     source: "../facet.png"
 			     x: 10
-			     y: 10
+			     y: 30
 		     }
 
 		     Text {
@@ -825,7 +806,7 @@ ApplicationWindow {
 			     anchors.top: parent.top
 			     anchors.topMargin: 30
 			     font.pointSize: 12
-			     text: "<h2>Mist (0.6.5)</h2><h4>Amalthea</h4><br><h3>Development</h3>Jeffrey Wilcke<br>Viktor Trón<br><h3>Building</h3>Maran Hidskes"
+			     text: "<h2>Mist (0.7.10)</h2><br><h3>Development</h3>Jeffrey Wilcke<br>Viktor Trón<br>Felix Lange<br>Taylor Gerring<br>Daniel Nagy<br><h3>UX</h3>Alex van de Sande<br>"
 		     }
 	     }
 
@@ -889,7 +870,7 @@ ApplicationWindow {
 					     pastPeers.append({text: ips.get(i)})
 				     }
 
-				     pastPeers.insert(0, {text: "poc-6.ethdev.com:30303"})
+				     pastPeers.insert(0, {text: "poc-7.ethdev.com:30303"})
 			     }
 		     }
 
diff --git a/mist/assets/qml/muted.qml b/cmd/mist/assets/qml/muted.qml
index fac8267c4..fac8267c4 100644
--- a/mist/assets/qml/muted.qml
+++ b/cmd/mist/assets/qml/muted.qml
diff --git a/mist/assets/qml/test_app.qml b/cmd/mist/assets/qml/test_app.qml
index c69587839..c69587839 100644
--- a/mist/assets/qml/test_app.qml
+++ b/cmd/mist/assets/qml/test_app.qml
diff --git a/mist/assets/qml/transactions.qml b/cmd/mist/assets/qml/transactions.qml
index e9a035a85..e9a035a85 100644
--- a/mist/assets/qml/transactions.qml
+++ b/cmd/mist/assets/qml/transactions.qml
diff --git a/mist/assets/qml/views/chain.qml b/cmd/mist/assets/qml/views/chain.qml
index 130ff8bb9..6baf757a5 100644
--- a/mist/assets/qml/views/chain.qml
+++ b/cmd/mist/assets/qml/views/chain.qml
@@ -8,8 +8,7 @@ import Ethereum 1.0
 
 Rectangle {
 	id: root
-	property var title: "Network"
-	property var iconSource: "../net.png"
+	property var title: "Block Chain"
 	property var menuItem
 
 	objectName: "chainView"
@@ -64,12 +63,12 @@ Rectangle {
 
 		Menu {
 			id: contextMenu
-			property var row;
+			property var row
 			MenuItem {
 				text: "Details"
 				onTriggered: {
 					popup.visible = true
-					popup.setDetails(blockModel.get(this.row))
+					popup.setDetails(blockModel.get(contextMenu.row))
 				}
 			}
 
@@ -78,7 +77,7 @@ Rectangle {
 			MenuItem {
 				text: "Copy"
 				onTriggered: {
-					copyToClipboard(blockModel.get(this.row).hash)
+					copyToClipboard(blockModel.get(contextMenu.row).hash)
 				}
 			}
 
@@ -86,7 +85,7 @@ Rectangle {
 				text: "Dump State"
 				onTriggered: {
 					generalFileDialog.show(false, function(path) {
-						var hash = blockModel.get(this.row).hash;
+						var hash = blockModel.get(contextMenu.row).hash;
 
 						gui.dumpState(hash, path);
 					});
@@ -102,22 +101,18 @@ Rectangle {
 			initial = false
 		}
 
-		/*
-		var txs = JSON.parse(block.transactions);
-		if(txs != null){
-			amount = txs.length
-		}
-		*/
-	       var txs = block.transactions;
 	       var amount = block.transactions.length;
+	       var txs = [];
+	       for(var i = 0; i < block.transactions.length; i++) {
+		       var tx = JSON.parse(block.transactions.getAsJson(i));
+		       txs.push(tx);
+	       }
 
 		if(initial){
-			blockModel.append({size: block.size, number: block.number, name: block.name, gasLimit: block.gasLimit, gasUsed: block.gasUsed, coinbase: block.coinbase, hash: block.hash, txs: txs, txAmount: amount, time: block.time, prettyTime: convertToPretty(block.time)})
+			blockModel.append({raw: block.raw, bloom: block.bloom, size: block.size, number: block.number, name: block.name, gasLimit: block.gasLimit, gasUsed: block.gasUsed, coinbase: block.coinbase, hash: block.hash, txs: txs, txAmount: amount, time: block.time, prettyTime: convertToPretty(block.time)})
 		} else {
-			blockModel.insert(0, {size: block.size, number: block.number, name: block.name, gasLimit: block.gasLimit, gasUsed: block.gasUsed, coinbase: block.coinbase, hash: block.hash, txs: txs, txAmount: amount, time: block.time, prettyTime: convertToPretty(block.time)})
+			blockModel.insert(0, {bloom: block.bloom, size: block.size, number: block.number, name: block.name, gasLimit: block.gasLimit, gasUsed: block.gasUsed, coinbase: block.coinbase, hash: block.hash, txs: txs, txAmount: amount, time: block.time, prettyTime: convertToPretty(block.time)})
 		}
-
-		//root.secondary.text = "#" + block.number;
 	}
 
 	Window {
@@ -141,6 +136,7 @@ Rectangle {
 					Text { text: '<h3>Block details</h3>'; color: "#F2F2F2"}
 					Text { text: '<b>Block number:</b> ' + number + " (Size: " + size + ")"; color: "#F2F2F2"}
 					Text { text: '<b>Hash:</b> ' + hash; color: "#F2F2F2"}
+					Text { text: '<b>Bloom:</b> ' + bloom; color: "#F2F2F2"}
 					Text { text: '<b>Coinbase:</b> &lt;' + name + '&gt; ' + coinbase; color: "#F2F2F2"}
 					Text { text: '<b>Block found at:</b> ' + prettyTime; color: "#F2F2F2"}
 					Text { text: '<b>Gas used:</b> ' + gasUsed + " / " + gasLimit; color: "#F2F2F2"}
@@ -215,7 +211,7 @@ Rectangle {
 				anchors.topMargin: 10
 				text: "Debug contract"
 				onClicked: {
-					if(tx.createsContract){
+					if(tx && tx.createsContract){
 						eth.startDbWithCode(tx.rawData)
 					}else {
 						eth.startDbWithContractAndData(tx.address, tx.rawData)
@@ -227,11 +223,17 @@ Rectangle {
 				text: "Contract"
 				anchors.top: contractLabel.bottom
 				anchors.left: parent.left
-				anchors.bottom: popup.bottom
+				anchors.right: parent.right
 				wrapMode: Text.Wrap
-				width: parent.width - 30
 				height: 80
-				anchors.leftMargin: 10
+			}
+			TextArea {
+				id: dumpData
+				anchors.top: contractData.bottom
+				anchors.left: parent.left
+				anchors.right: parent.right
+				anchors.bottom: parent.bottom
+				height: 300
 			}
 		}
 		property var transactionModel: ListModel {
@@ -240,19 +242,20 @@ Rectangle {
 		property var singleBlock: ListModel {
 			id: singleBlock
 		}
-		function setDetails(block){
-			singleBlock.set(0,block)
+		function setDetails(bl){
+			singleBlock.set(0, bl)
 			popup.height = 300
 			transactionModel.clear()
-			if(block.txs !== undefined){
-				for(var i = 0; i < block.txs.length; i++) {
-					transactionModel.insert(0, block.txs.get(i))
+			if(bl.txs !== undefined){
+				for(var i = 0; i < bl.txs.count; i++) {
+					transactionModel.insert(0, bl.txs.get(i))
 				}
-				if(block.txs.length > 0 && block.txs.get(0).data){
-					popup.showContractData(block.txs.get(0))
+				if(bl.txs.count > 0 && bl.txs.get(0).data){
+					popup.showContractData(bl.txs.get(0))
 				}
 			}
 			txView.forceActiveFocus()
+			dumpData.text = bl.raw;
 		}
 	}
 }
diff --git a/mist/assets/qml/views/history.qml b/cmd/mist/assets/qml/views/history.qml
index 9eee883e3..c72f8f3ae 100644
--- a/mist/assets/qml/views/history.qml
+++ b/cmd/mist/assets/qml/views/history.qml
@@ -7,7 +7,6 @@ import QtQuick.Controls.Styles 1.1
 import Ethereum 1.0
 
 Rectangle {
-	property var iconSource: "../tx.png"
 	property var title: "Transactions"
 	property var menuItem
 
diff --git a/mist/assets/qml/views/info.qml b/cmd/mist/assets/qml/views/info.qml
index 158e2c960..3ff551b05 100644
--- a/mist/assets/qml/views/info.qml
+++ b/cmd/mist/assets/qml/views/info.qml
@@ -7,8 +7,7 @@ import QtQuick.Controls.Styles 1.1
 import Ethereum 1.0
 
 Rectangle {
-	property var title: "Information"
-	property var iconSource: "../heart.png"
+	property var title: "Debug Info"
 	property var menuItem
 
 	objectName: "infoView"
diff --git a/mist/assets/qml/views/jeffcoin/jeff.png b/cmd/mist/assets/qml/views/jeffcoin/jeff.png
index 2b9c6651a..2b9c6651a 100644
--- a/mist/assets/qml/views/jeffcoin/jeff.png
+++ b/cmd/mist/assets/qml/views/jeffcoin/jeff.png
diff --git a/mist/assets/qml/views/jeffcoin/jeffcoin.qml b/cmd/mist/assets/qml/views/jeffcoin/jeffcoin.qml
index 23502d334..23502d334 100644
--- a/mist/assets/qml/views/jeffcoin/jeffcoin.qml
+++ b/cmd/mist/assets/qml/views/jeffcoin/jeffcoin.qml
diff --git a/cmd/mist/assets/qml/views/miner.qml b/cmd/mist/assets/qml/views/miner.qml
new file mode 100644
index 000000000..e0182649f
--- /dev/null
+++ b/cmd/mist/assets/qml/views/miner.qml
@@ -0,0 +1,254 @@
+import QtQuick 2.0
+import QtQuick.Controls 1.0;
+import QtQuick.Layouts 1.0;
+import QtQuick.Dialogs 1.0;
+import QtQuick.Window 2.1;
+import QtQuick.Controls.Styles 1.1
+import Ethereum 1.0
+
+Rectangle {
+	id: root
+	property var title: "Miner"
+	property var iconSource: "../miner.png"
+	property var menuItem
+
+	color: "#00000000"
+
+	ColumnLayout {
+		spacing: 10
+		anchors.fill: parent
+
+		Rectangle {
+			id: mainPane
+			color: "#00000000"
+			anchors {
+				top: parent.top
+				bottom: localTxPane.top
+				left: parent.left
+				right: parent.right
+			}
+
+			Rectangle {
+				id: menu
+				height: 25
+				anchors {
+					left: parent.left
+				}
+
+				RowLayout {
+					id: tools
+					anchors {
+						left: parent.left
+						right: parent.right
+					}
+
+					Button {
+						text: "Start"
+						onClicked: {
+							eth.setGasPrice(minGasPrice.text || "10000000000000");
+							if (eth.toggleMining()) {
+								this.text = "Stop";
+							} else {
+								this.text = "Start";
+							}
+						}
+					}
+
+					Rectangle {
+						anchors.top: parent.top
+						anchors.topMargin: 2
+						width: 200
+						TextField {
+							id: minGasPrice
+							placeholderText: "Min Gas: 10000000000000"
+							width: 200
+							validator: RegExpValidator { regExp: /\d*/ }
+						}
+					}
+				}
+			}
+
+			Column {
+				anchors {
+					left: parent.left
+					right: parent.right
+					top: menu.bottom
+					topMargin: 5
+				}
+
+				Text {
+					text: "<b>Merged mining options</b>"
+				}
+
+				TableView {
+					id: mergedMiningTable
+					height: 300
+					anchors {
+						left: parent.left
+						right: parent.right
+					}
+					Component {
+						id: checkBoxDelegate
+
+						Item {
+							id: test
+							CheckBox {
+								anchors.fill: parent
+								checked: styleData.value
+
+								onClicked: {
+									var model = mergedMiningModel.get(styleData.row)
+
+									if (this.checked) {
+										model.id = txModel.createLocalTx(model.address, "0", "5000", "0", "")
+									} else {
+										txModel.removeWithId(model.id);
+										model.id = 0;
+									}
+								}
+							}
+						}
+					}
+					TableViewColumn{ role: "checked" ; title: "" ; width: 40 ; delegate: checkBoxDelegate }
+					TableViewColumn{ role: "name" ; title: "Name" ; width: 480 }
+					model: ListModel {
+						objectName: "mergedMiningModel"
+						id: mergedMiningModel 
+						function addMergedMiningOption(model) {
+							this.append(model);
+						}
+					}
+					Component.onCompleted: {
+						/*
+						// XXX Temp. replace with above eventually
+						var tmpItems = ["JEVCoin", "Some coin", "Other coin", "Etc coin"];
+						var address = "e6716f9544a56c530d868e4bfbacb172315bdead";
+						for (var i = 0; i < tmpItems.length; i++) {
+							mergedMiningModel.append({checked: false, name: tmpItems[i], address: address, id: 0, itemId: i});
+						}
+						*/
+					}
+				}
+			}
+		}
+
+		Rectangle {
+			id: localTxPane
+			color: "#ececec"
+			border.color: "#cccccc"
+			border.width: 1
+			anchors {
+				left: parent.left
+				right: parent.right
+				bottom: parent.bottom
+			}
+			height: 300
+
+			ColumnLayout {
+				spacing: 10
+				anchors.fill: parent
+				RowLayout {
+					id: newLocalTx
+					anchors {
+						left: parent.left
+						leftMargin: 5
+						top: parent.top
+						topMargin: 5
+						bottomMargin: 5
+					}
+
+					Text {
+						text: "Local tx"
+					}
+
+					Rectangle {
+						width: 250
+						color: "#00000000"
+						anchors.top: parent.top
+						anchors.topMargin: 2
+
+						TextField {
+							id: to
+							placeholderText: "To"
+							width: 250
+							validator: RegExpValidator { regExp: /[abcdefABCDEF1234567890]*/ }
+						}
+					}
+					TextField {
+						property var defaultGas: "5000"
+						id: gas
+						placeholderText: "Gas"
+						text: defaultGas
+						validator: RegExpValidator { regExp: /\d*/ }
+					}
+					TextField {
+						id: gasPrice
+						placeholderText: "Price"
+						validator: RegExpValidator { regExp: /\d*/ }
+					}
+					TextField {
+						id: value 
+						placeholderText: "Amount"
+						text: "0"
+						validator: RegExpValidator { regExp: /\d*/ }
+					}
+					TextField {
+						id: data
+						placeholderText: "Data"
+						validator: RegExpValidator { regExp: /[abcdefABCDEF1234567890]*/ }
+					}
+					Button {
+						text: "Create"
+						onClicked: {
+							if (to.text.length == 40 && gasPrice.text.length != 0 && value.text.length != 0 && gas.text.length != 0) {
+								txModel.createLocalTx(to.text, gasPrice.text, gas.text, value.text, data.text);
+
+								to.text = ""; gasPrice.text = "";
+								gas.text = gas.defaultGas;
+								value.text = "0"
+							}
+						}
+					}
+				}
+
+				TableView {
+					id: txTableView
+					anchors {
+						top: newLocalTx.bottom
+						topMargin: 5
+						left: parent.left
+						right: parent.right
+						bottom: parent.bottom
+					}
+					TableViewColumn{ role: "to" ; title: "To" ; width: 480 }
+					TableViewColumn{ role: "gas" ; title: "Gas" ; width: 100 }
+					TableViewColumn{ role: "gasPrice" ; title: "Gas Price" ; width: 100 }
+					TableViewColumn{ role: "value" ; title: "Amount" ; width: 100 }
+					TableViewColumn{ role: "data" ; title: "Data" ; width: 100 }
+
+					model: ListModel {
+						id: txModel
+						Component.onCompleted: {
+						}
+						function removeWithId(id) {
+							for (var i = 0; i < this.count; i++) {
+								if (txModel.get(i).id == id) {
+									this.remove(i);
+									eth.removeLocalTransaction(id)
+									break;
+								}
+							}
+						}
+
+						function createLocalTx(to, gasPrice, gas, value, data) {
+							var id = eth.addLocalTransaction(to, data, gas, gasPrice, value)
+							txModel.insert(0, {to: to, gas: gas, gasPrice: gasPrice, value: value, data: data, id: id});
+
+							return id
+						}
+					}
+				}
+			}
+		}
+	}
+}
diff --git a/mist/assets/qml/views/pending_tx.qml b/cmd/mist/assets/qml/views/pending_tx.qml
index abfa25790..4442a69db 100644
--- a/mist/assets/qml/views/pending_tx.qml
+++ b/cmd/mist/assets/qml/views/pending_tx.qml
@@ -8,7 +8,6 @@ import Ethereum 1.0
 
 Rectangle {
 	property var title: "Pending Transactions"
-	property var iconSource: "../tx.png"
 	property var menuItem
 
 	objectName: "pendingTxView"
diff --git a/mist/assets/qml/views/transaction.qml b/cmd/mist/assets/qml/views/transaction.qml
index 7d689733f..62c762956 100644
--- a/mist/assets/qml/views/transaction.qml
+++ b/cmd/mist/assets/qml/views/transaction.qml
@@ -7,8 +7,7 @@ import QtQuick.Controls.Styles 1.1
 import Ethereum 1.0
 
 Rectangle {
-	property var iconSource: "../new.png"
-	property var title: "New transaction"
+	property var title: "New Transaction"
 	property var menuItem
 
 	objectName: "newTxView"
@@ -115,7 +114,7 @@ Rectangle {
 				width: 50
 				validator: RegExpValidator { regExp: /\d*/ }
 				placeholderText: "Gas"
-				text: "500"
+				text: "5000"
 			}
 			Label {
 				id: atLabel
diff --git a/mist/assets/qml/views/wallet.qml b/cmd/mist/assets/qml/views/wallet.qml
index a57e7869a..9727ef35c 100644
--- a/mist/assets/qml/views/wallet.qml
+++ b/cmd/mist/assets/qml/views/wallet.qml
@@ -16,7 +16,13 @@ Rectangle {
 	anchors.fill: parent
 
 	function onReady() {
-		menuItem.secondaryTitle = eth.numberToHuman(eth.balanceAt(eth.key().address))
+		setBalance()
+	}
+
+	function setBalance() {
+		balance.text = "<b>Balance</b>: " + eth.numberToHuman(eth.balanceAt(eth.key().address))
+		if(menuItem)
+			menuItem.secondaryTitle = eth.numberToHuman(eth.balanceAt(eth.key().address))
 	}
 
 	ListModel {
@@ -39,7 +45,6 @@ Rectangle {
 
 		Text {
 			id: balance
-			text: "<b>Balance</b>: " + eth.numberToHuman(eth.balanceAt(eth.key().address))
 			font.pixelSize: 24
 			anchors {
 				horizontalCenter: parent.horizontalCenter
@@ -126,7 +131,6 @@ Rectangle {
 						var value = txValue.text + denomModel.get(valueDenom.currentIndex).zeros;
 						var gasPrice = "10000000000000"
 						var res = eth.transact({from: eth.key().privateKey, to: txTo.text, value: value, gas: "500", gasPrice: gasPrice})
-						console.log(res)
 					}
 				}
 			}
@@ -144,24 +148,35 @@ Rectangle {
 				id: txTableView
 				anchors.fill : parent
 				TableViewColumn{ role: "num" ; title: "#" ; width: 30 }
-				TableViewColumn{ role: "from" ; title: "From" ; width: 280 }
-				TableViewColumn{ role: "to" ; title: "To" ; width: 280 }
+				TableViewColumn{ role: "from" ; title: "From" ; width: 340 }
+				TableViewColumn{ role: "to" ; title: "To" ; width: 340 }
 				TableViewColumn{ role: "value" ; title: "Amount" ; width: 100 }
 
 				model: ListModel {
 					id: txModel
 					Component.onCompleted: {
-						var filter = ethx.watch({latest: -1, from: eth.key().address});
-						filter.changed(addTxs)
-
-						addTxs(filter.messages())
+						var me = eth.key().address;
+						var filterTo = ethx.watch({latest: -1, to: me});
+						var filterFrom = ethx.watch({latest: -1, from: me});
+						filterTo.changed(addTxs)
+						filterFrom.changed(addTxs)
+
+						addTxs(filterTo.messages())
+						addTxs(filterFrom.messages())
 					}
 
 					function addTxs(messages) {
+						setBalance()
+
 						for(var i = 0; i < messages.length; i++) {
 							var message = messages.get(i);
 							var to = eth.lookupName(message.to);
-							var from = eth.lookupName(message.from);
+							var from;
+							if(message.from.length == 0) {
+								from = "- MINED -";
+							} else {
+								from = eth.lookupName(message.from);
+							}
 							txModel.insert(0, {num: txModel.count, from: from, to: to, value: eth.numberToHuman(message.value)})
 						}
 					}
diff --git a/cmd/mist/assets/qml/webapp.qml b/cmd/mist/assets/qml/webapp.qml
new file mode 100644
index 000000000..bd7399dc9
--- /dev/null
+++ b/cmd/mist/assets/qml/webapp.qml
@@ -0,0 +1,413 @@
+import QtQuick 2.0
+import QtWebKit 3.0
+import QtWebKit.experimental 1.0
+import QtQuick.Controls 1.0;
+import QtQuick.Controls.Styles 1.0
+import QtQuick.Layouts 1.0;
+import QtQuick.Window 2.1;
+import Ethereum 1.0
+
+Rectangle {
+    id: window
+    property var title: "Browser"
+    property var iconSource: "../browser.png"
+    property var menuItem
+
+    property alias url: webview.url
+    property alias webView: webview
+
+    property var cleanPath: false
+    property var open: function(url) {
+        if(!window.cleanPath) {
+            var uri = url;
+            if(!/.*\:\/\/.*/.test(uri)) {
+                uri = "http://" + uri;
+            }
+
+            var reg = /(^https?\:\/\/(?:www\.)?)([a-zA-Z0-9_\-]*\.eth)(.*)/
+
+            if(reg.test(uri)) {
+                uri.replace(reg, function(match, pre, domain, path) {
+                    uri = pre;
+
+                    var lookup = eth.lookupDomain(domain.substring(0, domain.length - 4));
+                    var ip = [];
+                    for(var i = 0, l = lookup.length; i < l; i++) {
+                        ip.push(lookup.charCodeAt(i))
+                    }
+
+                    if(ip.length != 0) {
+                        uri += lookup;
+                    } else {
+                        uri += domain;
+                    }
+
+                    uri += path;
+                });
+            }
+
+            window.cleanPath = true;
+
+            webview.url = uri;
+
+            //uriNav.text = uri.text.replace(/(^https?\:\/\/(?:www\.)?)([a-zA-Z0-9_\-]*\.\w{2,3})(.*)/, "$1$2<span style='color:#CCC'>$3</span>");
+            uriNav.text = uri;
+        } else {
+            // Prevent inf loop.
+            window.cleanPath = false;
+        }
+    }
+
+    Component.onCompleted: {
+        webview.url = "http://etherian.io"
+    }
+
+    signal messages(var messages, int id);
+    onMessages: {
+        // Bit of a cheat to get proper JSON
+        var m = JSON.parse(JSON.parse(JSON.stringify(messages)))
+        webview.postEvent("messages", [m, id]);
+    }
+
+    Item {
+        objectName: "root"
+        id: root
+        anchors.fill: parent
+        state: "inspectorShown"
+
+        RowLayout {
+            id: navBar
+            height: 40
+            anchors {
+                left: parent.left
+                right: parent.right
+                leftMargin: 7
+            }
+
+            Button {
+                id: back
+                onClicked: {
+                    webview.goBack()
+                }
+                style: ButtonStyle {
+                    background: Image {
+                        source: "../back.png"
+                        width: 30
+                        height: 30
+                    }
+                }
+            }
+
+            TextField {
+                anchors {
+                    left: back.right
+                    right: toggleInspector.left
+                    leftMargin: 5
+                    rightMargin: 5
+                }
+                text: "http://etherian.io"
+                id: uriNav
+                y: parent.height / 2 - this.height / 2
+
+                Keys.onReturnPressed: {
+                    webview.url = this.text;
+                }
+            }
+
+            Button {
+                id: toggleInspector
+                anchors {
+                    right: parent.right
+                }
+                iconSource: "../bug.png"
+                onClicked: {
+                    if(inspector.visible == true){
+                        inspector.visible = false
+                    }else{
+                        inspector.visible = true
+                        inspector.url = webview.experimental.remoteInspectorUrl
+                    }
+                }
+            }
+        }
+
+
+        WebView {
+            objectName: "webView"
+            id: webview
+            anchors {
+                left: parent.left
+                right: parent.right
+                bottom: parent.bottom
+                top: navBar.bottom
+            }
+
+            //property var cleanPath: false
+            onNavigationRequested: {
+                window.open(request.url.toString());					
+            }
+
+            function sendMessage(data) {
+                webview.experimental.postMessage(JSON.stringify(data))
+            }
+
+
+            experimental.preferences.javascriptEnabled: true
+            experimental.preferences.navigatorQtObjectEnabled: true
+            experimental.preferences.developerExtrasEnabled: true
+            //experimental.userScripts: ["../ext/qt_messaging_adapter.js", "../ext/q.js", "../ext/big.js", "../ext/string.js", "../ext/html_messaging.js"]
+            experimental.userScripts: ["../ext/q.js", "../ext/eth.js/main.js", "../ext/eth.js/qt.js", "../ext/setup.js"]
+            experimental.onMessageReceived: {
+                console.log("[onMessageReceived]: ", message.data)
+                // TODO move to messaging.js
+                var data = JSON.parse(message.data)
+
+                try {
+                    switch(data.call) {
+                        case "compile":
+                        postData(data._id, eth.compile(data.args[0]))
+                        break
+
+                        case "coinbase":
+                        postData(data._id, eth.coinBase())
+
+                        case "account":
+                        postData(data._id, eth.key().address);
+
+                        case "isListening":
+                        postData(data._id, eth.isListening())
+
+                        break
+
+                        case "isMining":
+                        postData(data._id, eth.isMining())
+
+                        break
+
+                        case "peerCount":
+                        postData(data._id, eth.peerCount())
+
+                        break
+
+                        case "countAt":
+                        require(1)
+                        postData(data._id, eth.txCountAt(data.args[0]))
+
+                        break
+
+                        case "codeAt":
+                        require(1)
+                        var code = eth.codeAt(data.args[0])
+                        postData(data._id, code);
+
+                        break
+
+                        case "blockByNumber":
+                        require(1)
+                        var block = eth.blockByNumber(data.args[0])
+                        postData(data._id, block)
+                        break
+
+                        case "blockByHash":
+                        require(1)
+                        var block = eth.blockByHash(data.args[0])
+                        postData(data._id, block)
+                        break
+
+                        require(2)
+                        var block = eth.blockByHash(data.args[0])
+                        postData(data._id, block.transactions[data.args[1]])
+                        break
+
+                        case "transactionByHash":
+                        case "transactionByNumber":
+                        require(2)
+
+                        var block;
+                        if (data.call === "transactionByHash")
+                            block = eth.blockByHash(data.args[0])
+                        else
+                            block = eth.blockByNumber(data.args[0])
+
+                        var tx = block.transactions.get(data.args[1])
+
+                        postData(data._id, tx)
+                        break
+
+                        case "uncleByHash":
+                        case "uncleByNumber":
+                        require(2)
+
+                        var block;
+                        if (data.call === "uncleByHash")
+                            block = eth.blockByHash(data.args[0])
+                        else
+                            block = eth.blockByNumber(data.args[0])
+
+                        var uncle = block.uncles.get(data.args[1])
+
+                        postData(data._id, uncle)
+
+                        break
+
+                        case "transact":
+                        require(5)
+
+                        var tx = eth.transact(data.args)
+                        postData(data._id, tx)
+
+                        break
+
+                        case "stateAt":
+                        require(2);
+
+                        var storage = eth.storageAt(data.args[0], data.args[1]);
+                        postData(data._id, storage)
+
+                        break
+
+                        case "call":
+                        require(1);
+                        var ret = eth.call(data.args)
+                        postData(data._id, ret)
+                        break
+
+                        case "balanceAt":
+                        require(1);
+
+                        postData(data._id, eth.balanceAt(data.args[0]));
+                        break
+
+                        case "watch":
+                        require(2)
+                        eth.watch(data.args[0], data.args[1])
+
+                        case "disconnect":
+                        require(1)
+                        postData(data._id, null)
+                        break;
+
+                        case "messages":
+                        require(1);
+
+                        var messages = JSON.parse(eth.getMessages(data.args[0]))
+                        postData(data._id, messages)
+                        break
+
+                        case "mutan":
+                        require(1)
+
+                        var code = eth.compileMutan(data.args[0])
+                        postData(data._id, "0x"+code)
+                        break;
+
+                        case "newFilterString":
+                        require(1)
+                        var id = eth.newFilterString(data.args[0])
+                        postData(data._id, id);
+                        break;
+
+                        case "newFilter":
+                        require(1)
+                        var id = eth.newFilter(data.args[0])
+
+                        postData(data._id, id);
+                        break;
+
+                        case "getMessages":
+                        require(1);
+
+                        var messages = eth.messages(data.args[0]);
+                        var m = JSON.parse(JSON.parse(JSON.stringify(messages)))
+                        postData(data._id, m);
+
+                        break;
+
+                        case "deleteFilter":
+                        require(1);
+                        eth.uninstallFilter(data.args[0])
+                        break;
+                    }
+                } catch(e) {
+                    console.log(data.call + ": " + e)
+
+                    postData(data._id, null);
+                }
+            }
+
+
+            function post(seed, data) {
+                postData(data._id, data)
+            }
+
+            function require(args, num) {
+                if(args.length < num) {
+                    throw("required argument count of "+num+" got "+args.length);
+                }
+            }
+            function postData(seed, data) {
+                webview.experimental.postMessage(JSON.stringify({data: data, _id: seed}))
+            }
+            function postEvent(event, data) {
+                webview.experimental.postMessage(JSON.stringify({data: data, _event: event}))
+            }
+
+            function onWatchedCb(data, id) {
+                var messages = JSON.parse(data)
+                postEvent("watched:"+id, messages)
+            }
+
+            function onNewBlockCb(block) {
+                postEvent("block:new", block)
+            }
+            function onObjectChangeCb(stateObject) {
+                postEvent("object:"+stateObject.address(), stateObject)
+            }
+            function onStorageChangeCb(storageObject) {
+                var ev = ["storage", storageObject.stateAddress, storageObject.address].join(":");
+                postEvent(ev, [storageObject.address, storageObject.value])
+            }
+        }
+
+
+        Rectangle {
+            id: sizeGrip
+            color: "gray"
+            visible: false
+            height: 10
+            anchors {
+                left: root.left
+                right: root.right
+            }
+            y: Math.round(root.height * 2 / 3)
+
+            MouseArea {
+                anchors.fill: parent
+                drag.target: sizeGrip
+                drag.minimumY: 0
+                drag.maximumY: root.height
+                drag.axis: Drag.YAxis
+            }
+        }
+
+        WebView {
+            id: inspector
+            visible: false
+            anchors {
+                left: root.left
+                right: root.right
+                top: sizeGrip.bottom
+                bottom: root.bottom
+            }
+        }
+
+        states: [
+            State {
+                name: "inspectorShown"
+                PropertyChanges {
+                    target: inspector
+                }
+            }
+        ]
+    }
+}
diff --git a/mist/assets/tx.png b/cmd/mist/assets/tx.png
index 62204c315..62204c315 100644
--- a/mist/assets/tx.png
+++ b/cmd/mist/assets/tx.png
diff --git a/mist/assets/util/test.html b/cmd/mist/assets/util/test.html
index d458e6670..d458e6670 100644
--- a/mist/assets/util/test.html
+++ b/cmd/mist/assets/util/test.html
diff --git a/mist/assets/wallet.png b/cmd/mist/assets/wallet.png
index 92c401e52..92c401e52 100644
--- a/mist/assets/wallet.png
+++ b/cmd/mist/assets/wallet.png
diff --git a/mist/bindings.go b/cmd/mist/bindings.go
index 141c4a469..6d2342c87 100644
--- a/mist/bindings.go
+++ b/cmd/mist/bindings.go
@@ -1,16 +1,31 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package main
 
 import (
 	"encoding/json"
-	"fmt"
 	"os"
 	"strconv"
 
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethlog"
-	"github.com/ethereum/eth-go/ethpipe"
-	"github.com/ethereum/eth-go/ethutil"
-	"github.com/ethereum/go-ethereum/utils"
+	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
 )
 
 type plugin struct {
@@ -18,16 +33,8 @@ type plugin struct {
 	Path string `json:"path"`
 }
 
-func (gui *Gui) Println(v ...interface{}) {
-	gui.printLog(fmt.Sprintln(v...))
-}
-
-func (gui *Gui) Printf(format string, v ...interface{}) {
-	gui.printLog(fmt.Sprintf(format, v...))
-}
-
-// Print function that logs directly to the GUI
-func (gui *Gui) printLog(s string) {
+// LogPrint writes to the GUI log.
+func (gui *Gui) LogPrint(level logger.LogLevel, msg string) {
 	/*
 		str := strings.TrimRight(s, "\n")
 		lines := strings.Split(str, "\n")
@@ -38,12 +45,12 @@ func (gui *Gui) printLog(s string) {
 		}
 	*/
 }
-func (gui *Gui) Transact(recipient, value, gas, gasPrice, d string) (*ethpipe.JSReceipt, error) {
+func (gui *Gui) Transact(recipient, value, gas, gasPrice, d string) (string, error) {
 	var data string
 	if len(recipient) == 0 {
 		code, err := ethutil.Compile(d, false)
 		if err != nil {
-			return nil, err
+			return "", err
 		}
 		data = ethutil.Bytes2Hex(code)
 	} else {
@@ -62,18 +69,14 @@ func (gui *Gui) GetCustomIdentifier() string {
 	return gui.clientIdentity.GetCustomIdentifier()
 }
 
-func (gui *Gui) ToggleTurboMining() {
-	gui.miner.ToggleTurbo()
-}
-
-// functions that allow Gui to implement interface ethlog.LogSystem
-func (gui *Gui) SetLogLevel(level ethlog.LogLevel) {
+// functions that allow Gui to implement interface guilogger.LogSystem
+func (gui *Gui) SetLogLevel(level logger.LogLevel) {
 	gui.logLevel = level
 	gui.stdLog.SetLogLevel(level)
 	gui.config.Save("loglevel", level)
 }
 
-func (gui *Gui) GetLogLevel() ethlog.LogLevel {
+func (gui *Gui) GetLogLevel() logger.LogLevel {
 	return gui.logLevel
 }
 
@@ -100,18 +103,18 @@ func (self *Gui) DumpState(hash, path string) {
 	var stateDump []byte
 
 	if len(hash) == 0 {
-		stateDump = self.eth.StateManager().CurrentState().Dump()
+		stateDump = self.eth.ChainManager().State().Dump()
 	} else {
-		var block *ethchain.Block
+		var block *types.Block
 		if hash[0] == '#' {
 			i, _ := strconv.Atoi(hash[1:])
-			block = self.eth.BlockChain().GetBlockByNumber(uint64(i))
+			block = self.eth.ChainManager().GetBlockByNumber(uint64(i))
 		} else {
-			block = self.eth.BlockChain().GetBlock(ethutil.Hex2Bytes(hash))
+			block = self.eth.ChainManager().GetBlock(ethutil.Hex2Bytes(hash))
 		}
 
 		if block == nil {
-			logger.Infof("block err: not found %s\n", hash)
+			guilogger.Infof("block err: not found %s\n", hash)
 			return
 		}
 
@@ -120,29 +123,12 @@ func (self *Gui) DumpState(hash, path string) {
 
 	file, err := os.OpenFile(path[7:], os.O_CREATE|os.O_RDWR, os.ModePerm)
 	if err != nil {
-		logger.Infoln("dump err: ", err)
+		guilogger.Infoln("dump err: ", err)
 		return
 	}
 	defer file.Close()
 
-	logger.Infof("dumped state (%s) to %s\n", hash, path)
+	guilogger.Infof("dumped state (%s) to %s\n", hash, path)
 
 	file.Write(stateDump)
 }
-func (gui *Gui) ToggleMining() {
-	var txt string
-	if gui.eth.Mining {
-		utils.StopMining(gui.eth)
-		txt = "Start mining"
-
-		gui.getObjectByName("miningLabel").Set("visible", false)
-	} else {
-		utils.StartMining(gui.eth)
-		gui.miner = utils.GetMiner()
-		txt = "Stop mining"
-
-		gui.getObjectByName("miningLabel").Set("visible", true)
-	}
-
-	gui.win.Root().Set("miningButtonText", txt)
-}
diff --git a/mist/debugger.go b/cmd/mist/debugger.go
index 9d1de8c42..a7a286e23 100644
--- a/mist/debugger.go
+++ b/cmd/mist/debugger.go
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package main
 
 import (
@@ -7,11 +24,11 @@ import (
 	"strings"
 	"unicode"
 
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethstate"
-	"github.com/ethereum/eth-go/ethutil"
-	"github.com/ethereum/eth-go/ethvm"
-	"github.com/ethereum/go-ethereum/utils"
+	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/vm"
 	"gopkg.in/qml.v1"
 )
 
@@ -20,10 +37,10 @@ type DebuggerWindow struct {
 	engine *qml.Engine
 	lib    *UiLib
 
-	vm *ethvm.Vm
+	vm *vm.DebugVm
 	Db *Debugger
 
-	state *ethstate.State
+	state *state.StateDB
 }
 
 func NewDebuggerWindow(lib *UiLib) *DebuggerWindow {
@@ -37,7 +54,7 @@ func NewDebuggerWindow(lib *UiLib) *DebuggerWindow {
 
 	win := component.CreateWindow(nil)
 
-	w := &DebuggerWindow{engine: engine, win: win, lib: lib, vm: &ethvm.Vm{}}
+	w := &DebuggerWindow{engine: engine, win: win, lib: lib, vm: &vm.DebugVm{}}
 	w.Db = NewDebugger(w)
 
 	return w
@@ -64,7 +81,7 @@ func (self *DebuggerWindow) SetData(data string) {
 func (self *DebuggerWindow) SetAsm(data []byte) {
 	self.win.Root().Call("clearAsm")
 
-	dis := ethchain.Disassemble(data)
+	dis := core.Disassemble(data)
 	for _, str := range dis {
 		self.win.Root().Call("setAsm", str)
 	}
@@ -124,28 +141,24 @@ func (self *DebuggerWindow) Debug(valueStr, gasStr, gasPriceStr, scriptStr, data
 		keyPair = self.lib.eth.KeyManager().KeyPair()
 	)
 
-	state := self.lib.eth.StateManager().TransState()
-	account := self.lib.eth.StateManager().TransState().GetAccount(keyPair.Address())
-	contract := ethstate.NewStateObject([]byte{0})
-	contract.Balance = value
+	statedb := self.lib.eth.ChainManager().TransState()
+	account := self.lib.eth.ChainManager().TransState().GetAccount(keyPair.Address())
+	contract := statedb.NewStateObject([]byte{0})
+	contract.SetCode(script)
+	contract.SetBalance(value)
 
 	self.SetAsm(script)
 
-	block := self.lib.eth.BlockChain().CurrentBlock
+	block := self.lib.eth.ChainManager().CurrentBlock()
 
-	callerClosure := ethvm.NewClosure(&ethstate.Message{}, account, contract, script, gas, gasPrice)
-	env := utils.NewEnv(state, block, account.Address(), value)
-	vm := ethvm.New(env)
-	vm.Verbose = true
-	vm.Dbg = self.Db
+	env := utils.NewEnv(statedb, block, account.Address(), value)
 
-	self.vm = vm
-	self.Db.done = false
 	self.Logf("callsize %d", len(script))
 	go func() {
-		ret, g, err := callerClosure.Call(vm, data)
-		tot := new(big.Int).Mul(g, gasPrice)
-		self.Logf("gas usage %v total price = %v (%v)", g, tot, ethutil.CurrencyToString(tot))
+		ret, err := env.Call(account, contract.Address(), data, gas, gasPrice, ethutil.Big0)
+		//ret, g, err := callerClosure.Call(evm, data)
+		tot := new(big.Int).Mul(env.Gas, gasPrice)
+		self.Logf("gas usage %v total price = %v (%v)", env.Gas, tot, ethutil.CurrencyToString(tot))
 		if err != nil {
 			self.Logln("exited with errors:", err)
 		} else {
@@ -156,7 +169,7 @@ func (self *DebuggerWindow) Debug(valueStr, gasStr, gasPriceStr, scriptStr, data
 			}
 		}
 
-		state.Reset()
+		statedb.Reset()
 
 		if !self.Db.interrupt {
 			self.Db.done = true
@@ -251,13 +264,13 @@ type storeVal struct {
 	Key, Value string
 }
 
-func (self *Debugger) BreakHook(pc int, op ethvm.OpCode, mem *ethvm.Memory, stack *ethvm.Stack, stateObject *ethstate.StateObject) bool {
+func (self *Debugger) BreakHook(pc int, op vm.OpCode, mem *vm.Memory, stack *vm.Stack, stateObject *state.StateObject) bool {
 	self.main.Logln("break on instr:", pc)
 
 	return self.halting(pc, op, mem, stack, stateObject)
 }
 
-func (self *Debugger) StepHook(pc int, op ethvm.OpCode, mem *ethvm.Memory, stack *ethvm.Stack, stateObject *ethstate.StateObject) bool {
+func (self *Debugger) StepHook(pc int, op vm.OpCode, mem *vm.Memory, stack *vm.Stack, stateObject *state.StateObject) bool {
 	return self.halting(pc, op, mem, stack, stateObject)
 }
 
@@ -269,7 +282,7 @@ func (self *Debugger) BreakPoints() []int64 {
 	return self.breakPoints
 }
 
-func (d *Debugger) halting(pc int, op ethvm.OpCode, mem *ethvm.Memory, stack *ethvm.Stack, stateObject *ethstate.StateObject) bool {
+func (d *Debugger) halting(pc int, op vm.OpCode, mem *vm.Memory, stack *vm.Stack, stateObject *state.StateObject) bool {
 	d.win.Root().Call("setInstruction", pc)
 	d.win.Root().Call("clearMem")
 	d.win.Root().Call("clearStack")
diff --git a/cmd/mist/errors.go b/cmd/mist/errors.go
new file mode 100644
index 000000000..2069bf26d
--- /dev/null
+++ b/cmd/mist/errors.go
@@ -0,0 +1,53 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"gopkg.in/qml.v1"
+)
+
+func ErrorWindow(err error) {
+	engine := qml.NewEngine()
+	component, e := engine.LoadString("local", qmlErr)
+	if e != nil {
+		fmt.Println("err:", err)
+		os.Exit(1)
+	}
+
+	win := component.CreateWindow(nil)
+	win.Root().ObjectByName("label").Set("text", err.Error())
+	win.Show()
+	win.Wait()
+}
+
+const qmlErr = `
+import QtQuick 2.0; import QtQuick.Controls 1.0;
+ApplicationWindow {
+	width: 600; height: 150;
+	flags: Qt.CustomizeWindowHint | Qt.WindowTitleHint | Qt.WindowCloseButtonHint
+	title: "Error"
+	Text {
+		x: parent.width / 2 - this.width / 2;
+		y: parent.height / 2 - this.height / 2;
+		objectName: "label";
+	}
+}
+`
diff --git a/cmd/mist/ext_app.go b/cmd/mist/ext_app.go
new file mode 100644
index 000000000..33c420a7a
--- /dev/null
+++ b/cmd/mist/ext_app.go
@@ -0,0 +1,143 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
+package main
+
+import (
+	"encoding/json"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/javascript"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/ui/qt"
+	"github.com/ethereum/go-ethereum/xeth"
+	"gopkg.in/qml.v1"
+)
+
+type AppContainer interface {
+	Create() error
+	Destroy()
+
+	Window() *qml.Window
+	Engine() *qml.Engine
+
+	NewBlock(*types.Block)
+	NewWatcher(chan bool)
+	Messages(state.Messages, string)
+	Post(string, int)
+}
+
+type ExtApplication struct {
+	*xeth.JSXEth
+	eth core.EthManager
+
+	events          event.Subscription
+	watcherQuitChan chan bool
+
+	filters map[string]*core.Filter
+
+	container AppContainer
+	lib       *UiLib
+}
+
+func NewExtApplication(container AppContainer, lib *UiLib) *ExtApplication {
+	return &ExtApplication{
+		JSXEth:          xeth.NewJSXEth(lib.eth),
+		eth:             lib.eth,
+		watcherQuitChan: make(chan bool),
+		filters:         make(map[string]*core.Filter),
+		container:       container,
+		lib:             lib,
+	}
+}
+
+func (app *ExtApplication) run() {
+	// Set the "eth" api on to the containers context
+	context := app.container.Engine().Context()
+	context.SetVar("eth", app)
+	context.SetVar("ui", app.lib)
+
+	err := app.container.Create()
+	if err != nil {
+		guilogger.Errorln(err)
+		return
+	}
+
+	// Subscribe to events
+	mux := app.lib.eth.EventMux()
+	app.events = mux.Subscribe(core.NewBlockEvent{}, state.Messages(nil))
+
+	// Call the main loop
+	go app.mainLoop()
+
+	app.container.NewWatcher(app.watcherQuitChan)
+
+	win := app.container.Window()
+	win.Show()
+	win.Wait()
+
+	app.stop()
+}
+
+func (app *ExtApplication) stop() {
+	app.events.Unsubscribe()
+
+	// Kill the main loop
+	app.watcherQuitChan <- true
+
+	app.container.Destroy()
+}
+
+func (app *ExtApplication) mainLoop() {
+	for ev := range app.events.Chan() {
+		switch ev := ev.(type) {
+		case core.NewBlockEvent:
+			app.container.NewBlock(ev.Block)
+
+		case state.Messages:
+			for id, filter := range app.filters {
+				msgs := filter.FilterMessages(ev)
+				if len(msgs) > 0 {
+					app.container.Messages(msgs, id)
+				}
+			}
+		}
+	}
+}
+
+func (self *ExtApplication) Watch(filterOptions map[string]interface{}, identifier string) {
+	self.filters[identifier] = qt.NewFilterFromMap(filterOptions, self.eth)
+}
+
+func (self *ExtApplication) GetMessages(object map[string]interface{}) string {
+	filter := qt.NewFilterFromMap(object, self.eth)
+
+	messages := filter.Find()
+	var msgs []javascript.JSMessage
+	for _, m := range messages {
+		msgs = append(msgs, javascript.NewJSMessage(m))
+	}
+
+	b, err := json.Marshal(msgs)
+	if err != nil {
+		return "{\"error\":" + err.Error() + "}"
+	}
+
+	return string(b)
+}
diff --git a/mist/flags.go b/cmd/mist/flags.go
index d2e7d3fb0..e49408181 100644
--- a/mist/flags.go
+++ b/cmd/mist/flags.go
@@ -1,8 +1,26 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package main
 
 import (
 	"flag"
 	"fmt"
+	"log"
 	"os"
 	"os/user"
 	"path"
@@ -10,29 +28,34 @@ import (
 	"runtime"
 
 	"bitbucket.org/kardianos/osext"
-	"github.com/ethereum/eth-go/ethlog"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/vm"
 )
 
-var Identifier string
-var KeyRing string
-var KeyStore string
-var StartRpc bool
-var RpcPort int
-var UseUPnP bool
-var OutboundPort string
-var ShowGenesis bool
-var AddPeer string
-var MaxPeer int
-var GenAddr bool
-var UseSeed bool
-var SecretFile string
-var ExportDir string
-var NonInteractive bool
-var Datadir string
-var LogFile string
-var ConfigFile string
-var DebugFile string
-var LogLevel int
+var (
+	Identifier      string
+	KeyRing         string
+	KeyStore        string
+	StartRpc        bool
+	StartWebSockets bool
+	RpcPort         int
+	UseUPnP         bool
+	OutboundPort    string
+	ShowGenesis     bool
+	AddPeer         string
+	MaxPeer         int
+	GenAddr         bool
+	UseSeed         bool
+	SecretFile      string
+	ExportDir       string
+	NonInteractive  bool
+	Datadir         string
+	LogFile         string
+	ConfigFile      string
+	DebugFile       string
+	LogLevel        int
+	VmType          int
+)
 
 // flags specific to gui client
 var AssetPath string
@@ -44,7 +67,7 @@ func defaultAssetPath() string {
 	// assume a debug build and use the source directory as
 	// asset directory.
 	pwd, _ := os.Getwd()
-	if pwd == path.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "mist") {
+	if pwd == path.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "cmd", "mist") {
 		assetPath = path.Join(pwd, "assets")
 	} else {
 		switch runtime.GOOS {
@@ -75,14 +98,16 @@ func Init() {
 		flag.PrintDefaults()
 	}
 
+	flag.IntVar(&VmType, "vm", 0, "Virtual Machine type: 0-1: standard, debug")
 	flag.StringVar(&Identifier, "id", "", "Custom client identifier")
 	flag.StringVar(&KeyRing, "keyring", "", "identifier for keyring to use")
 	flag.StringVar(&KeyStore, "keystore", "db", "system to store keyrings: db|file (db)")
 	flag.StringVar(&OutboundPort, "port", "30303", "listening port")
 	flag.BoolVar(&UseUPnP, "upnp", true, "enable UPnP support")
-	flag.IntVar(&MaxPeer, "maxpeer", 10, "maximum desired peers")
+	flag.IntVar(&MaxPeer, "maxpeer", 30, "maximum desired peers")
 	flag.IntVar(&RpcPort, "rpcport", 8080, "port to start json-rpc server on")
 	flag.BoolVar(&StartRpc, "rpc", false, "start rpc server")
+	flag.BoolVar(&StartWebSockets, "ws", false, "start websocket server")
 	flag.BoolVar(&NonInteractive, "y", false, "non-interactive mode (say yes to confirmations)")
 	flag.BoolVar(&UseSeed, "seed", true, "seed peers")
 	flag.BoolVar(&GenAddr, "genaddr", false, "create a new priv/pub key")
@@ -92,9 +117,13 @@ func Init() {
 	flag.StringVar(&Datadir, "datadir", defaultDataDir(), "specifies the datadir to use")
 	flag.StringVar(&ConfigFile, "conf", defaultConfigFile, "config file")
 	flag.StringVar(&DebugFile, "debug", "", "debug file (no debugging if not set)")
-	flag.IntVar(&LogLevel, "loglevel", int(ethlog.InfoLevel), "loglevel: 0-5: silent,error,warn,info,debug,debug detail)")
+	flag.IntVar(&LogLevel, "loglevel", int(logger.InfoLevel), "loglevel: 0-5: silent,error,warn,info,debug,debug detail)")
 
 	flag.StringVar(&AssetPath, "asset_path", defaultAssetPath(), "absolute path to GUI assets directory")
 
 	flag.Parse()
+
+	if VmType >= int(vm.MaxVmTy) {
+		log.Fatal("Invalid VM type ", VmType)
+	}
 }
diff --git a/mist/gui.go b/cmd/mist/gui.go
index 80d4a1fc3..7775889cc 100644
--- a/mist/gui.go
+++ b/cmd/mist/gui.go
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package main
 
 import "C"
@@ -13,15 +30,15 @@ import (
 	"strings"
 	"time"
 
-	"github.com/ethereum/eth-go"
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethdb"
-	"github.com/ethereum/eth-go/ethlog"
-	"github.com/ethereum/eth-go/ethminer"
-	"github.com/ethereum/eth-go/ethpipe"
-	"github.com/ethereum/eth-go/ethreact"
-	"github.com/ethereum/eth-go/ethutil"
-	"github.com/ethereum/eth-go/ethwire"
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/miner"
+	"github.com/ethereum/go-ethereum/wire"
+	"github.com/ethereum/go-ethereum/xeth"
 	"gopkg.in/qml.v1"
 )
 
@@ -47,8 +64,17 @@ func LoadExtension(path string) (uintptr, error) {
 	return ptr.Interface().(uintptr), nil
 }
 */
+/*
+	vec, errr := LoadExtension("/Users/jeffrey/Desktop/build-libqmltest-Desktop_Qt_5_2_1_clang_64bit-Debug/liblibqmltest_debug.dylib")
+	fmt.Printf("Fetched vec with addr: %#x\n", vec)
+	if errr != nil {
+		fmt.Println(errr)
+	} else {
+		context.SetVar("vec", (unsafe.Pointer)(vec))
+	}
+*/
 
-var logger = ethlog.NewLogger("GUI")
+var guilogger = logger.NewLogger("GUI")
 
 type Gui struct {
 	// The main application window
@@ -65,30 +91,30 @@ type Gui struct {
 
 	txDb *ethdb.LDBDatabase
 
-	logLevel ethlog.LogLevel
+	logLevel logger.LogLevel
 	open     bool
 
-	pipe *ethpipe.JSPipe
+	pipe *xeth.JSXEth
 
 	Session        string
-	clientIdentity *ethwire.SimpleClientIdentity
+	clientIdentity *wire.SimpleClientIdentity
 	config         *ethutil.ConfigManager
 
 	plugins map[string]plugin
 
-	miner  *ethminer.Miner
-	stdLog ethlog.LogSystem
+	miner  *miner.Miner
+	stdLog logger.LogSystem
 }
 
 // Create GUI, but doesn't start it
-func NewWindow(ethereum *eth.Ethereum, config *ethutil.ConfigManager, clientIdentity *ethwire.SimpleClientIdentity, session string, logLevel int) *Gui {
+func NewWindow(ethereum *eth.Ethereum, config *ethutil.ConfigManager, clientIdentity *wire.SimpleClientIdentity, session string, logLevel int) *Gui {
 	db, err := ethdb.NewLDBDatabase("tx_database")
 	if err != nil {
 		panic(err)
 	}
 
-	pipe := ethpipe.NewJSPipe(ethereum)
-	gui := &Gui{eth: ethereum, txDb: db, pipe: pipe, logLevel: ethlog.LogLevel(logLevel), Session: session, open: false, clientIdentity: clientIdentity, config: config, plugins: make(map[string]plugin)}
+	pipe := xeth.NewJSXEth(ethereum)
+	gui := &Gui{eth: ethereum, txDb: db, pipe: pipe, logLevel: logger.LogLevel(logLevel), Session: session, open: false, clientIdentity: clientIdentity, config: config, plugins: make(map[string]plugin)}
 	data, _ := ethutil.ReadAllFile(path.Join(ethutil.Config.ExecPath, "plugins.json"))
 	json.Unmarshal([]byte(data), &gui.plugins)
 
@@ -96,16 +122,17 @@ func NewWindow(ethereum *eth.Ethereum, config *ethutil.ConfigManager, clientIden
 }
 
 func (gui *Gui) Start(assetPath string) {
-
 	defer gui.txDb.Close()
 
+	guilogger.Infoln("Starting GUI")
+
 	// Register ethereum functions
 	qml.RegisterTypes("Ethereum", 1, 0, []qml.TypeSpec{{
-		Init: func(p *ethpipe.JSBlock, obj qml.Object) { p.Number = 0; p.Hash = "" },
+		Init: func(p *xeth.JSBlock, obj qml.Object) { p.Number = 0; p.Hash = "" },
 	}, {
-		Init: func(p *ethpipe.JSTransaction, obj qml.Object) { p.Value = ""; p.Hash = ""; p.Address = "" },
+		Init: func(p *xeth.JSTransaction, obj qml.Object) { p.Value = ""; p.Hash = ""; p.Address = "" },
 	}, {
-		Init: func(p *ethpipe.KeyVal, obj qml.Object) { p.Key = ""; p.Value = "" },
+		Init: func(p *xeth.KeyVal, obj qml.Object) { p.Key = ""; p.Value = "" },
 	}})
 	// Create a new QML engine
 	gui.engine = qml.NewEngine()
@@ -116,16 +143,6 @@ func (gui *Gui) Start(assetPath string) {
 	context.SetVar("gui", gui)
 	context.SetVar("eth", gui.uiLib)
 
-	/*
-		vec, errr := LoadExtension("/Users/jeffrey/Desktop/build-libqmltest-Desktop_Qt_5_2_1_clang_64bit-Debug/liblibqmltest_debug.dylib")
-		fmt.Printf("Fetched vec with addr: %#x\n", vec)
-		if errr != nil {
-			fmt.Println(errr)
-		} else {
-			context.SetVar("vec", (unsafe.Pointer)(vec))
-		}
-	*/
-
 	// Load the main QML interface
 	data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
 
@@ -139,36 +156,35 @@ func (gui *Gui) Start(assetPath string) {
 		addlog = true
 	}
 	if err != nil {
-		logger.Errorln("asset not found: you can set an alternative asset path on the command line using option 'asset_path'", err)
+		guilogger.Errorln("asset not found: you can set an alternative asset path on the command line using option 'asset_path'", err)
 
 		panic(err)
 	}
 
-	logger.Infoln("Starting GUI")
 	gui.open = true
 	win.Show()
 
-	// only add the gui logger after window is shown otherwise slider wont be shown
+	// only add the gui guilogger after window is shown otherwise slider wont be shown
 	if addlog {
-		ethlog.AddLogSystem(gui)
+		logger.AddLogSystem(gui)
 	}
 	win.Wait()
 
-	// need to silence gui logger after window closed otherwise logsystem hangs (but do not save loglevel)
-	gui.logLevel = ethlog.Silence
+	// need to silence gui guilogger after window closed otherwise logsystem hangs (but do not save loglevel)
+	gui.logLevel = logger.Silence
 	gui.open = false
 }
 
 func (gui *Gui) Stop() {
 	if gui.open {
-		gui.logLevel = ethlog.Silence
+		gui.logLevel = logger.Silence
 		gui.open = false
 		gui.win.Hide()
 	}
 
 	gui.uiLib.jsEngine.Stop()
 
-	logger.Infoln("Stopped")
+	guilogger.Infoln("Stopped")
 }
 
 func (gui *Gui) showWallet(context *qml.Context) (*qml.Window, error) {
@@ -213,51 +229,34 @@ func (gui *Gui) createWindow(comp qml.Object) *qml.Window {
 func (gui *Gui) ImportAndSetPrivKey(secret string) bool {
 	err := gui.eth.KeyManager().InitFromString(gui.Session, 0, secret)
 	if err != nil {
-		logger.Errorln("unable to import: ", err)
+		guilogger.Errorln("unable to import: ", err)
 		return false
 	}
-	logger.Errorln("successfully imported: ", err)
+	guilogger.Errorln("successfully imported: ", err)
 	return true
 }
 
 func (gui *Gui) CreateAndSetPrivKey() (string, string, string, string) {
 	err := gui.eth.KeyManager().Init(gui.Session, 0, true)
 	if err != nil {
-		logger.Errorln("unable to create key: ", err)
+		guilogger.Errorln("unable to create key: ", err)
 		return "", "", "", ""
 	}
 	return gui.eth.KeyManager().KeyPair().AsStrings()
 }
 
-func (gui *Gui) setInitialBlockChain() {
-	sBlk := gui.eth.BlockChain().LastBlockHash
-	blk := gui.eth.BlockChain().GetBlock(sBlk)
-	for ; blk != nil; blk = gui.eth.BlockChain().GetBlock(sBlk) {
+func (gui *Gui) setInitialChain(ancientBlocks bool) {
+	sBlk := gui.eth.ChainManager().LastBlockHash()
+	blk := gui.eth.ChainManager().GetBlock(sBlk)
+	for ; blk != nil; blk = gui.eth.ChainManager().GetBlock(sBlk) {
 		sBlk = blk.PrevHash
-		addr := gui.address()
-
-		// Loop through all transactions to see if we missed any while being offline
-		for _, tx := range blk.Transactions() {
-			if bytes.Compare(tx.Sender(), addr) == 0 || bytes.Compare(tx.Recipient, addr) == 0 {
-				if ok, _ := gui.txDb.Get(tx.Hash()); ok == nil {
-					gui.txDb.Put(tx.Hash(), tx.RlpEncode())
-				}
-
-			}
-		}
 
 		gui.processBlock(blk, true)
 	}
 }
 
-type address struct {
-	Name, Address string
-}
-
 func (gui *Gui) loadAddressBook() {
 	view := gui.getObjectByName("infoView")
-	view.Call("clearAddress")
-
 	nameReg := gui.pipe.World().Config().Get("NameReg")
 	if nameReg != nil {
 		nameReg.EachStorage(func(name string, value *ethutil.Value) {
@@ -270,8 +269,30 @@ func (gui *Gui) loadAddressBook() {
 	}
 }
 
-func (gui *Gui) insertTransaction(window string, tx *ethchain.Transaction) {
-	pipe := ethpipe.New(gui.eth)
+func (self *Gui) loadMergedMiningOptions() {
+	view := self.getObjectByName("mergedMiningModel")
+
+	nameReg := self.pipe.World().Config().Get("MergeMining")
+	if nameReg != nil {
+		i := 0
+		nameReg.EachStorage(func(name string, value *ethutil.Value) {
+			if name[0] != 0 {
+				value.Decode()
+
+				view.Call("addMergedMiningOption", struct {
+					Checked       bool
+					Name, Address string
+					Id, ItemId    int
+				}{false, name, ethutil.Bytes2Hex(value.Bytes()), 0, i})
+
+				i++
+			}
+		})
+	}
+}
+
+func (gui *Gui) insertTransaction(window string, tx *types.Transaction) {
+	pipe := xeth.New(gui.eth)
 	nameReg := pipe.World().Config().Get("NameReg")
 	addr := gui.address()
 
@@ -283,14 +304,14 @@ func (gui *Gui) insertTransaction(window string, tx *ethchain.Transaction) {
 	}
 
 	var (
-		ptx  = ethpipe.NewJSTx(tx, pipe.World().State())
-		send = nameReg.Storage(tx.Sender())
-		rec  = nameReg.Storage(tx.Recipient)
+		ptx  = xeth.NewJSTx(tx, pipe.World().State())
+		send = nameReg.Storage(tx.From())
+		rec  = nameReg.Storage(tx.To())
 		s, r string
 	)
 
-	if tx.CreatesContract() {
-		rec = nameReg.Storage(tx.CreationAddress(pipe.World().State()))
+	if core.MessageCreatesContract(tx) {
+		rec = nameReg.Storage(core.AddressFromMessage(tx))
 	}
 
 	if send.Len() != 0 {
@@ -301,10 +322,10 @@ func (gui *Gui) insertTransaction(window string, tx *ethchain.Transaction) {
 	if rec.Len() != 0 {
 		r = strings.Trim(rec.Str(), "\x00")
 	} else {
-		if tx.CreatesContract() {
-			r = ethutil.Bytes2Hex(tx.CreationAddress(pipe.World().State()))
+		if core.MessageCreatesContract(tx) {
+			r = ethutil.Bytes2Hex(core.AddressFromMessage(tx))
 		} else {
-			r = ethutil.Bytes2Hex(tx.Recipient)
+			r = ethutil.Bytes2Hex(tx.To())
 		}
 	}
 	ptx.Sender = s
@@ -318,9 +339,9 @@ func (gui *Gui) insertTransaction(window string, tx *ethchain.Transaction) {
 }
 
 func (gui *Gui) readPreviousTransactions() {
-	it := gui.txDb.Db().NewIterator(nil, nil)
+	it := gui.txDb.NewIterator()
 	for it.Next() {
-		tx := ethchain.NewTransactionFromBytes(it.Value())
+		tx := types.NewTransactionFromBytes(it.Value())
 
 		gui.insertTransaction("post", tx)
 
@@ -328,9 +349,9 @@ func (gui *Gui) readPreviousTransactions() {
 	it.Release()
 }
 
-func (gui *Gui) processBlock(block *ethchain.Block, initial bool) {
+func (gui *Gui) processBlock(block *types.Block, initial bool) {
 	name := strings.Trim(gui.pipe.World().Config().Get("NameReg").Storage(block.Coinbase).Str(), "\x00")
-	b := ethpipe.NewJSBlock(block)
+	b := xeth.NewJSBlock(block)
 	b.Name = name
 
 	gui.getObjectByName("chainView").Call("addBlock", b, initial)
@@ -360,106 +381,96 @@ func (self *Gui) getObjectByName(objectName string) qml.Object {
 func (gui *Gui) update() {
 	// We have to wait for qml to be done loading all the windows.
 	for !gui.qmlDone {
-		time.Sleep(500 * time.Millisecond)
+		time.Sleep(300 * time.Millisecond)
 	}
 
 	go func() {
-		go gui.setInitialBlockChain()
+		go gui.setInitialChain(false)
 		gui.loadAddressBook()
+		gui.loadMergedMiningOptions()
 		gui.setPeerInfo()
-		gui.readPreviousTransactions()
 	}()
 
 	for _, plugin := range gui.plugins {
-		logger.Infoln("Loading plugin ", plugin.Name)
+		guilogger.Infoln("Loading plugin ", plugin.Name)
 
 		gui.win.Root().Call("addPlugin", plugin.Path, "")
 	}
 
-	var (
-		blockChan     = make(chan ethreact.Event, 100)
-		txChan        = make(chan ethreact.Event, 100)
-		objectChan    = make(chan ethreact.Event, 100)
-		peerChan      = make(chan ethreact.Event, 100)
-		chainSyncChan = make(chan ethreact.Event, 100)
-		miningChan    = make(chan ethreact.Event, 100)
-	)
-
 	peerUpdateTicker := time.NewTicker(5 * time.Second)
 	generalUpdateTicker := time.NewTicker(500 * time.Millisecond)
 	statsUpdateTicker := time.NewTicker(5 * time.Second)
 
-	state := gui.eth.StateManager().TransState()
+	state := gui.eth.ChainManager().TransState()
 
-	unconfirmedFunds := new(big.Int)
-	gui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(state.GetAccount(gui.address()).Balance)))
+	gui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(state.GetAccount(gui.address()).Balance())))
 
 	lastBlockLabel := gui.getObjectByName("lastBlockLabel")
 	miningLabel := gui.getObjectByName("miningLabel")
 
+	events := gui.eth.EventMux().Subscribe(
+		eth.ChainSyncEvent{},
+		eth.PeerListEvent{},
+		core.NewBlockEvent{},
+		core.TxPreEvent{},
+		core.TxPostEvent{},
+	)
+
 	go func() {
+		defer events.Unsubscribe()
 		for {
 			select {
-			case b := <-blockChan:
-				block := b.Resource.(*ethchain.Block)
-				gui.processBlock(block, false)
-				if bytes.Compare(block.Coinbase, gui.address()) == 0 {
-					gui.setWalletValue(gui.eth.StateManager().CurrentState().GetAccount(gui.address()).Balance, nil)
+			case ev, isopen := <-events.Chan():
+				if !isopen {
+					return
 				}
-			case txMsg := <-txChan:
-				tx := txMsg.Resource.(*ethchain.Transaction)
+				switch ev := ev.(type) {
+				case core.NewBlockEvent:
+					gui.processBlock(ev.Block, false)
+					if bytes.Compare(ev.Block.Coinbase, gui.address()) == 0 {
+						gui.setWalletValue(gui.eth.ChainManager().State().GetBalance(gui.address()), nil)
+					}
 
-				if txMsg.Name == "newTx:pre" {
-					object := state.GetAccount(gui.address())
+				case core.TxPreEvent:
+					tx := ev.Tx
 
-					if bytes.Compare(tx.Sender(), gui.address()) == 0 {
-						unconfirmedFunds.Sub(unconfirmedFunds, tx.Value)
-					} else if bytes.Compare(tx.Recipient, gui.address()) == 0 {
-						unconfirmedFunds.Add(unconfirmedFunds, tx.Value)
-					}
+					tstate := gui.eth.ChainManager().TransState()
+					cstate := gui.eth.ChainManager().State()
 
-					gui.setWalletValue(object.Balance, unconfirmedFunds)
+					taccount := tstate.GetAccount(gui.address())
+					caccount := cstate.GetAccount(gui.address())
+					unconfirmedFunds := new(big.Int).Sub(taccount.Balance(), caccount.Balance())
 
+					gui.setWalletValue(taccount.Balance(), unconfirmedFunds)
 					gui.insertTransaction("pre", tx)
-				} else {
+
+				case core.TxPostEvent:
+					tx := ev.Tx
 					object := state.GetAccount(gui.address())
+
 					if bytes.Compare(tx.Sender(), gui.address()) == 0 {
-						object.SubAmount(tx.Value)
+						object.SubAmount(tx.Value())
 
-						//gui.getObjectByName("transactionView").Call("addTx", ethpipe.NewJSTx(tx), "send")
 						gui.txDb.Put(tx.Hash(), tx.RlpEncode())
-					} else if bytes.Compare(tx.Recipient, gui.address()) == 0 {
-						object.AddAmount(tx.Value)
+					} else if bytes.Compare(tx.To(), gui.address()) == 0 {
+						object.AddAmount(tx.Value())
 
-						//gui.getObjectByName("transactionView").Call("addTx", ethpipe.NewJSTx(tx), "recv")
 						gui.txDb.Put(tx.Hash(), tx.RlpEncode())
 					}
 
-					gui.setWalletValue(object.Balance, nil)
-
+					gui.setWalletValue(object.Balance(), nil)
 					state.UpdateStateObject(object)
+
+				case eth.PeerListEvent:
+					gui.setPeerInfo()
 				}
 
-			case <-objectChan:
-				gui.loadAddressBook()
-			case <-peerChan:
-				gui.setPeerInfo()
 			case <-peerUpdateTicker.C:
 				gui.setPeerInfo()
-			case msg := <-miningChan:
-				if msg.Name == "miner:start" {
-					gui.miner = msg.Resource.(*ethminer.Miner)
-				} else {
-					gui.miner = nil
-				}
 			case <-generalUpdateTicker.C:
-				statusText := "#" + gui.eth.BlockChain().CurrentBlock.Number.String()
+				statusText := "#" + gui.eth.ChainManager().CurrentBlock().Number.String()
 				lastBlockLabel.Set("text", statusText)
-
-				if gui.miner != nil {
-					pow := gui.miner.GetPow()
-					miningLabel.Set("text", "Mining @ "+strconv.FormatInt(pow.GetHashrate(), 10)+"Khash")
-				}
+				miningLabel.Set("text", "Mining @ "+strconv.FormatInt(gui.uiLib.miner.GetPow().GetHashrate(), 10)+"Khash")
 
 				blockLength := gui.eth.BlockPool().BlocksProcessed
 				chainLength := gui.eth.BlockPool().ChainLength
@@ -469,7 +480,6 @@ func (gui *Gui) update() {
 					dlWidget         = gui.win.Root().ObjectByName("downloadIndicator")
 					dlLabel          = gui.win.Root().ObjectByName("downloadLabel")
 				)
-
 				dlWidget.Set("value", pct)
 				dlLabel.Set("text", fmt.Sprintf("%d / %d", blockLength, chainLength))
 
@@ -478,20 +488,6 @@ func (gui *Gui) update() {
 			}
 		}
 	}()
-
-	reactor := gui.eth.Reactor()
-
-	reactor.Subscribe("newBlock", blockChan)
-	reactor.Subscribe("newTx:pre", txChan)
-	reactor.Subscribe("newTx:post", txChan)
-	reactor.Subscribe("chainSync", chainSyncChan)
-	reactor.Subscribe("miner:start", miningChan)
-	reactor.Subscribe("miner:stop", miningChan)
-
-	nameReg := gui.pipe.World().Config().Get("NameReg")
-	reactor.Subscribe("object:"+string(nameReg.Address()), objectChan)
-
-	reactor.Subscribe("peerList", peerChan)
 }
 
 func (gui *Gui) setStatsPane() {
@@ -499,7 +495,7 @@ func (gui *Gui) setStatsPane() {
 	runtime.ReadMemStats(&memStats)
 
 	statsPane := gui.getObjectByName("statsPane")
-	statsPane.Set("text", fmt.Sprintf(`###### Mist 0.6.8 (%s) #######
+	statsPane.Set("text", fmt.Sprintf(`###### Mist %s (%s) #######
 
 eth %d (p2p = %d)
 
@@ -512,7 +508,7 @@ Heap Alloc: %d
 
 CGNext:     %x
 NumGC:      %d
-`, runtime.Version(),
+`, Version, runtime.Version(),
 		eth.ProtocolVersion, eth.P2PVersion,
 		runtime.NumCPU, runtime.NumGoroutine(), runtime.NumCgoCall(),
 		memStats.Alloc, memStats.HeapAlloc,
@@ -522,7 +518,6 @@ NumGC:      %d
 
 func (gui *Gui) setPeerInfo() {
 	gui.win.Root().Call("setPeers", fmt.Sprintf("%d / %d", gui.eth.PeerCount(), gui.eth.MaxPeers))
-
 	gui.win.Root().Call("resetPeers")
 	for _, peer := range gui.pipe.Peers() {
 		gui.win.Root().Call("addPeer", peer)
diff --git a/mist/html_container.go b/cmd/mist/html_container.go
index 69edea570..b3fc219fa 100644
--- a/mist/html_container.go
+++ b/cmd/mist/html_container.go
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package main
 
 import (
@@ -10,11 +27,11 @@ import (
 	"path"
 	"path/filepath"
 
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethpipe"
-	"github.com/ethereum/eth-go/ethstate"
-	"github.com/ethereum/eth-go/ethutil"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethutil"
 	"github.com/ethereum/go-ethereum/javascript"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/xeth"
 	"github.com/howeyc/fsnotify"
 	"gopkg.in/qml.v1"
 )
@@ -81,12 +98,12 @@ func (app *HtmlApplication) NewWatcher(quitChan chan bool) {
 
 	app.watcher, err = fsnotify.NewWatcher()
 	if err != nil {
-		logger.Infoln("Could not create new auto-reload watcher:", err)
+		guilogger.Infoln("Could not create new auto-reload watcher:", err)
 		return
 	}
 	err = app.watcher.Watch(app.RootFolder())
 	if err != nil {
-		logger.Infoln("Could not start auto-reload watcher:", err)
+		guilogger.Infoln("Could not start auto-reload watcher:", err)
 		return
 	}
 	for _, folder := range app.RecursiveFolders() {
@@ -102,11 +119,11 @@ func (app *HtmlApplication) NewWatcher(quitChan chan bool) {
 				app.watcher.Close()
 				break out
 			case <-app.watcher.Event:
-				//logger.Debugln("Got event:", ev)
+				//guilogger.Debugln("Got event:", ev)
 				app.webView.Call("reload")
 			case err := <-app.watcher.Error:
 				// TODO: Do something here
-				logger.Infoln("Watcher error:", err)
+				guilogger.Infoln("Watcher error:", err)
 			}
 		}
 	}()
@@ -121,12 +138,12 @@ func (app *HtmlApplication) Window() *qml.Window {
 	return app.win
 }
 
-func (app *HtmlApplication) NewBlock(block *ethchain.Block) {
-	b := &ethpipe.JSBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Bytes2Hex(block.Hash())}
+func (app *HtmlApplication) NewBlock(block *types.Block) {
+	b := &xeth.JSBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Bytes2Hex(block.Hash())}
 	app.webView.Call("onNewBlockCb", b)
 }
 
-func (self *HtmlApplication) Messages(messages ethstate.Messages, id string) {
+func (self *HtmlApplication) Messages(messages state.Messages, id string) {
 	var msgs []javascript.JSMessage
 	for _, m := range messages {
 		msgs = append(msgs, javascript.NewJSMessage(m))
diff --git a/mist/main.go b/cmd/mist/main.go
index 6e4554352..eaf0af0c7 100644
--- a/mist/main.go
+++ b/cmd/mist/main.go
@@ -1,18 +1,37 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package main
 
 import (
+	"fmt"
 	"os"
 	"runtime"
+	"time"
 
-	"github.com/ethereum/eth-go"
-	"github.com/ethereum/eth-go/ethlog"
-	"github.com/ethereum/go-ethereum/utils"
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/logger"
 	"gopkg.in/qml.v1"
 )
 
 const (
 	ClientIdentifier = "Mist"
-	Version          = "0.6.7"
+	Version          = "0.7.10"
 )
 
 var ethereum *eth.Ethereum
@@ -21,7 +40,8 @@ func run() error {
 	// precedence: code-internal flag default < config file < environment variables < command line
 	Init() // parsing command line
 
-	config := utils.InitConfig(ConfigFile, Datadir, "ETH")
+	tstart := time.Now()
+	config := utils.InitConfig(VmType, ConfigFile, Datadir, "ETH")
 
 	utils.InitDataDir(Datadir)
 
@@ -34,14 +54,11 @@ func run() error {
 
 		os.Exit(1)
 	}
-
 	keyManager := utils.NewKeyManager(KeyStore, Datadir, db)
 
 	// create, import, export keys
 	utils.KeyTasks(keyManager, KeyRing, GenAddr, SecretFile, ExportDir, NonInteractive)
-
 	clientIdentity := utils.NewClientIdentity(ClientIdentifier, Version, Identifier)
-
 	ethereum = utils.NewEthereum(db, clientIdentity, keyManager, UseUPnP, OutboundPort, MaxPeer)
 
 	if ShowGenesis {
@@ -58,7 +75,10 @@ func run() error {
 	utils.RegisterInterrupt(func(os.Signal) {
 		gui.Stop()
 	})
-	utils.StartEthereum(ethereum, UseSeed)
+	go utils.StartEthereum(ethereum, UseSeed)
+
+	fmt.Println("ETH stack took", time.Since(tstart))
+
 	// gui blocks the main thread
 	gui.Start(AssetPath)
 
@@ -80,6 +100,10 @@ func main() {
 
 	utils.HandleInterrupt()
 
+	if StartWebSockets {
+		utils.StartWebSockets(ethereum)
+	}
+
 	// we need to run the interrupt callbacks in case gui is closed
 	// this skips if we got here by actual interrupt stopping the GUI
 	if !interrupted {
@@ -87,5 +111,5 @@ func main() {
 	}
 	// this blocks the thread
 	ethereum.WaitForShutdown()
-	ethlog.Flush()
+	logger.Flush()
 }
diff --git a/cmd/mist/qml_container.go b/cmd/mist/qml_container.go
new file mode 100644
index 000000000..a0a46f9b1
--- /dev/null
+++ b/cmd/mist/qml_container.go
@@ -0,0 +1,85 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
+package main
+
+import (
+	"fmt"
+	"runtime"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/xeth"
+	"gopkg.in/qml.v1"
+)
+
+type QmlApplication struct {
+	win    *qml.Window
+	engine *qml.Engine
+	lib    *UiLib
+	path   string
+}
+
+func NewQmlApplication(path string, lib *UiLib) *QmlApplication {
+	engine := qml.NewEngine()
+	return &QmlApplication{engine: engine, path: path, lib: lib}
+}
+
+func (app *QmlApplication) Create() error {
+	path := string(app.path)
+
+	// For some reason for windows we get /c:/path/to/something, windows doesn't like the first slash but is fine with the others so we are removing it
+	if app.path[0] == '/' && runtime.GOOS == "windows" {
+		path = app.path[1:]
+	}
+
+	component, err := app.engine.LoadFile(path)
+	if err != nil {
+		guilogger.Warnln(err)
+	}
+	app.win = component.CreateWindow(nil)
+
+	return nil
+}
+
+func (app *QmlApplication) Destroy() {
+	app.engine.Destroy()
+}
+
+func (app *QmlApplication) NewWatcher(quitChan chan bool) {
+}
+
+// Events
+func (app *QmlApplication) NewBlock(block *types.Block) {
+	pblock := &xeth.JSBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Bytes2Hex(block.Hash())}
+	app.win.Call("onNewBlockCb", pblock)
+}
+
+func (self *QmlApplication) Messages(msgs state.Messages, id string) {
+	fmt.Println("IMPLEMENT QML APPLICATION MESSAGES METHOD")
+}
+
+// Getters
+func (app *QmlApplication) Engine() *qml.Engine {
+	return app.engine
+}
+func (app *QmlApplication) Window() *qml.Window {
+	return app.win
+}
+
+func (app *QmlApplication) Post(data string, s int) {}
diff --git a/mist/ui_lib.go b/cmd/mist/ui_lib.go
index e77336c90..fdbde50fd 100644
--- a/mist/ui_lib.go
+++ b/cmd/mist/ui_lib.go
@@ -1,3 +1,20 @@
+// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301  USA
+
 package main
 
 import (
@@ -7,13 +24,16 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/ethereum/eth-go"
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethcrypto"
-	"github.com/ethereum/eth-go/ethpipe"
-	"github.com/ethereum/eth-go/ethstate"
-	"github.com/ethereum/eth-go/ethutil"
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
 	"github.com/ethereum/go-ethereum/javascript"
+	"github.com/ethereum/go-ethereum/miner"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/ui/qt"
+	"github.com/ethereum/go-ethereum/xeth"
 	"gopkg.in/qml.v1"
 )
 
@@ -24,7 +44,7 @@ type memAddr struct {
 
 // UI Library that has some basic functionality exposed
 type UiLib struct {
-	*ethpipe.JSPipe
+	*xeth.JSXEth
 	engine    *qml.Engine
 	eth       *eth.Ethereum
 	connected bool
@@ -37,21 +57,26 @@ type UiLib struct {
 	jsEngine *javascript.JSRE
 
 	filterCallbacks map[int][]int
+
+	miner *miner.Miner
 }
 
 func NewUiLib(engine *qml.Engine, eth *eth.Ethereum, assetPath string) *UiLib {
-	return &UiLib{JSPipe: ethpipe.NewJSPipe(eth), engine: engine, eth: eth, assetPath: assetPath, jsEngine: javascript.NewJSRE(eth), filterCallbacks: make(map[int][]int)} //, filters: make(map[int]*ethpipe.JSFilter)}
+	lib := &UiLib{JSXEth: xeth.NewJSXEth(eth), engine: engine, eth: eth, assetPath: assetPath, jsEngine: javascript.NewJSRE(eth), filterCallbacks: make(map[int][]int)} //, filters: make(map[int]*xeth.JSFilter)}
+	lib.miner = miner.New(eth.KeyManager().Address(), eth)
+
+	return lib
 }
 
 func (self *UiLib) Notef(args []interface{}) {
-	logger.Infoln(args...)
+	guilogger.Infoln(args...)
 }
 
 func (self *UiLib) LookupDomain(domain string) string {
 	world := self.World()
 
 	if len(domain) > 32 {
-		domain = string(ethcrypto.Sha3Bin([]byte(domain)))
+		domain = string(crypto.Sha3([]byte(domain)))
 	}
 	data := world.Config().Get("DnsReg").StorageString(domain).Bytes()
 
@@ -102,8 +127,11 @@ func (self *UiLib) PastPeers() *ethutil.List {
 }
 
 func (self *UiLib) ImportTx(rlpTx string) {
-	tx := ethchain.NewTransactionFromBytes(ethutil.Hex2Bytes(rlpTx))
-	self.eth.TxPool().QueueTransaction(tx)
+	tx := types.NewTransactionFromBytes(ethutil.Hex2Bytes(rlpTx))
+	err := self.eth.TxPool().Add(tx)
+	if err != nil {
+		guilogger.Infoln("import tx failed ", err)
+	}
 }
 
 func (self *UiLib) EvalJavascriptFile(path string) {
@@ -140,7 +168,7 @@ func (ui *UiLib) OpenBrowser() {
 func (ui *UiLib) Muted(content string) {
 	component, err := ui.engine.LoadFile(ui.AssetPath("qml/muted.qml"))
 	if err != nil {
-		logger.Debugln(err)
+		guilogger.Debugln(err)
 
 		return
 	}
@@ -172,7 +200,7 @@ func (ui *UiLib) AssetPath(p string) string {
 
 func (self *UiLib) StartDbWithContractAndData(contractHash, data string) {
 	dbWindow := NewDebuggerWindow(self)
-	object := self.eth.StateManager().CurrentState().GetStateObject(ethutil.Hex2Bytes(contractHash))
+	object := self.eth.ChainManager().State().GetStateObject(ethutil.Hex2Bytes(contractHash))
 	if len(object.Code) > 0 {
 		dbWindow.SetCode("0x" + ethutil.Bytes2Hex(object.Code))
 	}
@@ -193,28 +221,32 @@ func (self *UiLib) StartDebugger() {
 	dbWindow.Show()
 }
 
-func (self *UiLib) NewFilter(object map[string]interface{}) int {
-	filter, id := self.eth.InstallFilter(object)
-	filter.MessageCallback = func(messages ethstate.Messages) {
-		self.win.Root().Call("invokeFilterCallback", ethpipe.ToJSMessages(messages), id)
+func (self *UiLib) NewFilter(object map[string]interface{}) (id int) {
+	filter := qt.NewFilterFromMap(object, self.eth)
+	filter.MessageCallback = func(messages state.Messages) {
+		self.win.Root().Call("invokeFilterCallback", xeth.ToJSMessages(messages), id)
 	}
-
+	id = self.eth.InstallFilter(filter)
 	return id
 }
 
-func (self *UiLib) NewFilterString(typ string) int {
-	filter, id := self.eth.InstallFilter(nil)
-	filter.BlockCallback = func(block *ethchain.Block) {
-		self.win.Root().Call("invokeFilterCallback", "{}", id)
+func (self *UiLib) NewFilterString(typ string) (id int) {
+	filter := core.NewFilter(self.eth)
+	filter.BlockCallback = func(block *types.Block) {
+		if self.win != nil && self.win.Root() != nil {
+			self.win.Root().Call("invokeFilterCallback", "{}", id)
+		} else {
+			fmt.Println("QML is lagging")
+		}
 	}
-
+	id = self.eth.InstallFilter(filter)
 	return id
 }
 
 func (self *UiLib) Messages(id int) *ethutil.List {
 	filter := self.eth.GetFilter(id)
 	if filter != nil {
-		messages := ethpipe.ToJSMessages(filter.Find())
+		messages := xeth.ToJSMessages(filter.Find())
 
 		return messages
 	}
@@ -277,10 +309,10 @@ func mapToTxParams(object map[string]interface{}) map[string]string {
 	return conv
 }
 
-func (self *UiLib) Transact(params map[string]interface{}) (*ethpipe.JSReceipt, error) {
+func (self *UiLib) Transact(params map[string]interface{}) (string, error) {
 	object := mapToTxParams(params)
 
-	return self.JSPipe.Transact(
+	return self.JSXEth.Transact(
 		object["from"],
 		object["to"],
 		object["value"],
@@ -302,7 +334,7 @@ func (self *UiLib) Compile(code string) (string, error) {
 func (self *UiLib) Call(params map[string]interface{}) (string, error) {
 	object := mapToTxParams(params)
 
-	return self.JSPipe.Execute(
+	return self.JSXEth.Execute(
 		object["to"],
 		object["value"],
 		object["gas"],
@@ -310,3 +342,33 @@ func (self *UiLib) Call(params map[string]interface{}) (string, error) {
 		object["data"],
 	)
 }
+
+func (self *UiLib) AddLocalTransaction(to, data, gas, gasPrice, value string) int {
+	return self.miner.AddLocalTx(&miner.LocalTx{
+		To:       ethutil.Hex2Bytes(to),
+		Data:     ethutil.Hex2Bytes(data),
+		Gas:      gas,
+		GasPrice: gasPrice,
+		Value:    value,
+	}) - 1
+}
+
+func (self *UiLib) RemoveLocalTransaction(id int) {
+	self.miner.RemoveLocalTx(id)
+}
+
+func (self *UiLib) SetGasPrice(price string) {
+	self.miner.MinAcceptedGasPrice = ethutil.Big(price)
+}
+
+func (self *UiLib) ToggleMining() bool {
+	if !self.miner.Mining() {
+		self.miner.Start()
+
+		return true
+	} else {
+		self.miner.Stop()
+
+		return false
+	}
+}
diff --git a/cmd/peerserver/main.go b/cmd/peerserver/main.go
new file mode 100644
index 000000000..0fa7a9b44
--- /dev/null
+++ b/cmd/peerserver/main.go
@@ -0,0 +1,40 @@
+package main
+
+import (
+	"crypto/elliptic"
+	"fmt"
+	"log"
+	"net"
+	"os"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/p2p"
+)
+
+func main() {
+	logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.InfoLevel))
+	key, _ := crypto.GenerateKey()
+	marshaled := elliptic.Marshal(crypto.S256(), key.PublicKey.X, key.PublicKey.Y)
+
+	srv := p2p.Server{
+		MaxPeers:   10,
+		Identity:   p2p.NewSimpleClientIdentity("Ethereum(G)", "0.1", "Peer Server Two", string(marshaled)),
+		ListenAddr: ":30301",
+		NAT:        p2p.UPNP(),
+	}
+	if err := srv.Start(); err != nil {
+		fmt.Println("could not start server:", err)
+		os.Exit(1)
+	}
+
+	// add seed peers
+	seed, err := net.ResolveTCPAddr("tcp", "poc-7.ethdev.com:30300")
+	if err != nil {
+		fmt.Println("couldn't resolve:", err)
+		os.Exit(1)
+	}
+	srv.SuggestPeer(seed.IP, seed.Port, nil)
+
+	select {}
+}
diff --git a/utils/cmd.go b/cmd/utils/cmd.go
index 700542cae..db7bcd35e 100644
--- a/utils/cmd.go
+++ b/cmd/utils/cmd.go
@@ -13,18 +13,18 @@ import (
 	"time"
 
 	"bitbucket.org/kardianos/osext"
-	"github.com/ethereum/eth-go"
-	"github.com/ethereum/eth-go/ethcrypto"
-	"github.com/ethereum/eth-go/ethdb"
-	"github.com/ethereum/eth-go/ethlog"
-	"github.com/ethereum/eth-go/ethminer"
-	"github.com/ethereum/eth-go/ethpipe"
-	"github.com/ethereum/eth-go/ethrpc"
-	"github.com/ethereum/eth-go/ethutil"
-	"github.com/ethereum/eth-go/ethwire"
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/miner"
+	"github.com/ethereum/go-ethereum/rpc"
+	"github.com/ethereum/go-ethereum/wire"
+	"github.com/ethereum/go-ethereum/xeth"
 )
 
-var logger = ethlog.NewLogger("CLI")
+var clilogger = logger.NewLogger("CLI")
 var interruptCallbacks = []func(os.Signal){}
 
 // Register interrupt handlers callbacks
@@ -38,7 +38,7 @@ func HandleInterrupt() {
 	go func() {
 		signal.Notify(c, os.Interrupt)
 		for sig := range c {
-			logger.Errorf("Shutting down (%v) ... \n", sig)
+			clilogger.Errorf("Shutting down (%v) ... \n", sig)
 			RunInterruptCallbacks(sig)
 		}
 	}()
@@ -100,7 +100,7 @@ func InitDataDir(Datadir string) {
 	}
 }
 
-func InitLogging(Datadir string, LogFile string, LogLevel int, DebugFile string) ethlog.LogSystem {
+func InitLogging(Datadir string, LogFile string, LogLevel int, DebugFile string) logger.LogSystem {
 	var writer io.Writer
 	if LogFile == "" {
 		writer = os.Stdout
@@ -108,28 +108,31 @@ func InitLogging(Datadir string, LogFile string, LogLevel int, DebugFile string)
 		writer = openLogFile(Datadir, LogFile)
 	}
 
-	sys := ethlog.NewStdLogSystem(writer, log.LstdFlags, ethlog.LogLevel(LogLevel))
-	ethlog.AddLogSystem(sys)
+	sys := logger.NewStdLogSystem(writer, log.LstdFlags, logger.LogLevel(LogLevel))
+	logger.AddLogSystem(sys)
 	if DebugFile != "" {
 		writer = openLogFile(Datadir, DebugFile)
-		ethlog.AddLogSystem(ethlog.NewStdLogSystem(writer, log.LstdFlags, ethlog.DebugLevel))
+		logger.AddLogSystem(logger.NewStdLogSystem(writer, log.LstdFlags, logger.DebugLevel))
 	}
 
 	return sys
 }
 
-func InitConfig(ConfigFile string, Datadir string, EnvPrefix string) *ethutil.ConfigManager {
+func InitConfig(vmType int, ConfigFile string, Datadir string, EnvPrefix string) *ethutil.ConfigManager {
 	InitDataDir(Datadir)
-	return ethutil.ReadConfig(ConfigFile, Datadir, EnvPrefix)
+	cfg := ethutil.ReadConfig(ConfigFile, Datadir, EnvPrefix)
+	cfg.VmType = vmType
+
+	return cfg
 }
 
 func exit(err error) {
 	status := 0
 	if err != nil {
-		logger.Errorln("Fatal: ", err)
+		clilogger.Errorln("Fatal: ", err)
 		status = 1
 	}
-	ethlog.Flush()
+	logger.Flush()
 	os.Exit(status)
 }
 
@@ -141,15 +144,14 @@ func NewDatabase() ethutil.Database {
 	return db
 }
 
-func NewClientIdentity(clientIdentifier, version, customIdentifier string) *ethwire.SimpleClientIdentity {
-	logger.Infoln("identity created")
-	return ethwire.NewSimpleClientIdentity(clientIdentifier, version, customIdentifier)
+func NewClientIdentity(clientIdentifier, version, customIdentifier string) *wire.SimpleClientIdentity {
+	return wire.NewSimpleClientIdentity(clientIdentifier, version, customIdentifier)
 }
 
-func NewEthereum(db ethutil.Database, clientIdentity ethwire.ClientIdentity, keyManager *ethcrypto.KeyManager, usePnp bool, OutboundPort string, MaxPeer int) *eth.Ethereum {
+func NewEthereum(db ethutil.Database, clientIdentity wire.ClientIdentity, keyManager *crypto.KeyManager, usePnp bool, OutboundPort string, MaxPeer int) *eth.Ethereum {
 	ethereum, err := eth.New(db, clientIdentity, keyManager, eth.CapDefault, usePnp)
 	if err != nil {
-		logger.Fatalln("eth start err:", err)
+		clilogger.Fatalln("eth start err:", err)
 	}
 	ethereum.Port = OutboundPort
 	ethereum.MaxPeers = MaxPeer
@@ -157,26 +159,26 @@ func NewEthereum(db ethutil.Database, clientIdentity ethwire.ClientIdentity, key
 }
 
 func StartEthereum(ethereum *eth.Ethereum, UseSeed bool) {
-	logger.Infof("Starting %s", ethereum.ClientIdentity())
+	clilogger.Infof("Starting %s", ethereum.ClientIdentity())
 	ethereum.Start(UseSeed)
 	RegisterInterrupt(func(sig os.Signal) {
 		ethereum.Stop()
-		ethlog.Flush()
+		logger.Flush()
 	})
 }
 
 func ShowGenesis(ethereum *eth.Ethereum) {
-	logger.Infoln(ethereum.BlockChain().Genesis())
+	clilogger.Infoln(ethereum.ChainManager().Genesis())
 	exit(nil)
 }
 
-func NewKeyManager(KeyStore string, Datadir string, db ethutil.Database) *ethcrypto.KeyManager {
-	var keyManager *ethcrypto.KeyManager
+func NewKeyManager(KeyStore string, Datadir string, db ethutil.Database) *crypto.KeyManager {
+	var keyManager *crypto.KeyManager
 	switch {
 	case KeyStore == "db":
-		keyManager = ethcrypto.NewDBKeyManager(db)
+		keyManager = crypto.NewDBKeyManager(db)
 	case KeyStore == "file":
-		keyManager = ethcrypto.NewFileKeyManager(Datadir)
+		keyManager = crypto.NewFileKeyManager(Datadir)
 	default:
 		exit(fmt.Errorf("unknown keystore type: %s", KeyStore))
 	}
@@ -189,7 +191,7 @@ func DefaultAssetPath() string {
 	// assume a debug build and use the source directory as
 	// asset directory.
 	pwd, _ := os.Getwd()
-	if pwd == path.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "mist") {
+	if pwd == path.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "cmd", "mist") {
 		assetPath = path.Join(pwd, "assets")
 	} else {
 		switch runtime.GOOS {
@@ -208,7 +210,7 @@ func DefaultAssetPath() string {
 	return assetPath
 }
 
-func KeyTasks(keyManager *ethcrypto.KeyManager, KeyRing string, GenAddr bool, SecretFile string, ExportDir string, NonInteractive bool) {
+func KeyTasks(keyManager *crypto.KeyManager, KeyRing string, GenAddr bool, SecretFile string, ExportDir string, NonInteractive bool) {
 
 	var err error
 	switch {
@@ -237,22 +239,23 @@ func KeyTasks(keyManager *ethcrypto.KeyManager, KeyRing string, GenAddr bool, Se
 			exit(err)
 		}
 	}
+	clilogger.Infof("Main address %x\n", keyManager.Address())
 }
 
 func StartRpc(ethereum *eth.Ethereum, RpcPort int) {
 	var err error
-	ethereum.RpcServer, err = ethrpc.NewJsonRpcServer(ethpipe.NewJSPipe(ethereum), RpcPort)
+	ethereum.RpcServer, err = rpc.NewJsonRpcServer(xeth.NewJSXEth(ethereum), RpcPort)
 	if err != nil {
-		logger.Errorf("Could not start RPC interface (port %v): %v", RpcPort, err)
+		clilogger.Errorf("Could not start RPC interface (port %v): %v", RpcPort, err)
 	} else {
 		go ethereum.RpcServer.Start()
 	}
 }
 
-var miner *ethminer.Miner
+var gminer *miner.Miner
 
-func GetMiner() *ethminer.Miner {
-	return miner
+func GetMiner() *miner.Miner {
+	return gminer
 }
 
 func StartMining(ethereum *eth.Ethereum) bool {
@@ -261,16 +264,16 @@ func StartMining(ethereum *eth.Ethereum) bool {
 		addr := ethereum.KeyManager().Address()
 
 		go func() {
-			logger.Infoln("Start mining")
-			if miner == nil {
-				miner = ethminer.NewDefaultMiner(addr, ethereum)
+			clilogger.Infoln("Start mining")
+			if gminer == nil {
+				gminer = miner.New(addr, ethereum)
 			}
 			// Give it some time to connect with peers
 			time.Sleep(3 * time.Second)
 			for !ethereum.IsUpToDate() {
 				time.Sleep(5 * time.Second)
 			}
-			miner.Start()
+			gminer.Start()
 		}()
 		RegisterInterrupt(func(os.Signal) {
 			StopMining(ethereum)
@@ -294,9 +297,9 @@ func FormatTransactionData(data string) []byte {
 }
 
 func StopMining(ethereum *eth.Ethereum) bool {
-	if ethereum.Mining && miner != nil {
-		miner.Stop()
-		logger.Infoln("Stopped mining")
+	if ethereum.Mining && gminer != nil {
+		gminer.Stop()
+		clilogger.Infoln("Stopped mining")
 		ethereum.Mining = false
 
 		return true
@@ -307,14 +310,14 @@ func StopMining(ethereum *eth.Ethereum) bool {
 
 // Replay block
 func BlockDo(ethereum *eth.Ethereum, hash []byte) error {
-	block := ethereum.BlockChain().GetBlock(hash)
+	block := ethereum.ChainManager().GetBlock(hash)
 	if block == nil {
 		return fmt.Errorf("unknown block %x", hash)
 	}
 
-	parent := ethereum.BlockChain().GetBlock(block.PrevHash)
+	parent := ethereum.ChainManager().GetBlock(block.PrevHash)
 
-	_, err := ethereum.StateManager().ApplyDiff(parent.State(), parent, block)
+	_, err := ethereum.BlockManager().TransitionState(parent.State(), parent, block)
 	if err != nil {
 		return err
 	}
diff --git a/cmd/utils/vm_env.go b/cmd/utils/vm_env.go
new file mode 100644
index 000000000..461a797c2
--- /dev/null
+++ b/cmd/utils/vm_env.go
@@ -0,0 +1,70 @@
+package utils
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/vm"
+)
+
+type VMEnv struct {
+	state *state.StateDB
+	block *types.Block
+
+	transactor []byte
+	value      *big.Int
+
+	depth int
+	Gas   *big.Int
+}
+
+func NewEnv(state *state.StateDB, block *types.Block, transactor []byte, value *big.Int) *VMEnv {
+	return &VMEnv{
+		state:      state,
+		block:      block,
+		transactor: transactor,
+		value:      value,
+	}
+}
+
+func (self *VMEnv) Origin() []byte        { return self.transactor }
+func (self *VMEnv) BlockNumber() *big.Int { return self.block.Number }
+func (self *VMEnv) PrevHash() []byte      { return self.block.PrevHash }
+func (self *VMEnv) Coinbase() []byte      { return self.block.Coinbase }
+func (self *VMEnv) Time() int64           { return self.block.Time }
+func (self *VMEnv) Difficulty() *big.Int  { return self.block.Difficulty }
+func (self *VMEnv) BlockHash() []byte     { return self.block.Hash() }
+func (self *VMEnv) Value() *big.Int       { return self.value }
+func (self *VMEnv) State() *state.StateDB { return self.state }
+func (self *VMEnv) GasLimit() *big.Int    { return self.block.GasLimit }
+func (self *VMEnv) Depth() int            { return self.depth }
+func (self *VMEnv) SetDepth(i int)        { self.depth = i }
+func (self *VMEnv) AddLog(log state.Log) {
+	self.state.AddLog(log)
+}
+func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
+	return vm.Transfer(from, to, amount)
+}
+
+func (self *VMEnv) vm(addr, data []byte, gas, price, value *big.Int) *core.Execution {
+	return core.NewExecution(self, addr, data, gas, price, value)
+}
+
+func (self *VMEnv) Call(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(addr, data, gas, price, value)
+	ret, err := exe.Call(addr, caller)
+	self.Gas = exe.Gas
+
+	return ret, err
+}
+func (self *VMEnv) CallCode(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(caller.Address(), data, gas, price, value)
+	return exe.Call(addr, caller)
+}
+
+func (self *VMEnv) Create(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ClosureRef) {
+	exe := self.vm(addr, data, gas, price, value)
+	return exe.Create(caller)
+}
diff --git a/utils/websockets.go b/cmd/utils/websockets.go
index e89331a98..d3ba50e78 100644
--- a/utils/websockets.go
+++ b/cmd/utils/websockets.go
@@ -1,10 +1,10 @@
 package utils
 
 import (
-	"github.com/ethereum/eth-go"
-	"github.com/ethereum/eth-go/ethpipe"
-	"github.com/ethereum/eth-go/ethutil"
-	"github.com/ethereum/eth-go/websocket"
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/websocket"
+	"github.com/ethereum/go-ethereum/xeth"
 )
 
 func args(v ...interface{}) []interface{} {
@@ -21,7 +21,7 @@ func NewWebSocketServer(eth *eth.Ethereum) *WebSocketServer {
 }
 
 func (self *WebSocketServer) Serv() {
-	pipe := ethpipe.NewJSPipe(self.ethereum)
+	pipe := xeth.NewJSXEth(self.ethereum)
 
 	wsServ := websocket.NewServer("/eth", ":40404")
 	wsServ.MessageFunc(func(c *websocket.Client, msg *websocket.Message) {
diff --git a/compression/rle/read_write.go b/compression/rle/read_write.go
new file mode 100644
index 000000000..dde0e41ab
--- /dev/null
+++ b/compression/rle/read_write.go
@@ -0,0 +1,84 @@
+package rle
+
+import (
+	"bytes"
+	"errors"
+
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+const (
+	token             byte = 0xfe
+	emptyShaToken          = 0xfd
+	emptyListShaToken      = 0xfe
+	tokenToken             = 0xff
+)
+
+var empty = crypto.Sha3([]byte(""))
+var emptyList = crypto.Sha3([]byte{0x80})
+
+func Decompress(dat []byte) ([]byte, error) {
+	buf := new(bytes.Buffer)
+
+	for i := 0; i < len(dat); i++ {
+		if dat[i] == token {
+			if i+1 < len(dat) {
+				switch dat[i+1] {
+				case emptyShaToken:
+					buf.Write(empty)
+				case emptyListShaToken:
+					buf.Write(emptyList)
+				case tokenToken:
+					buf.WriteByte(token)
+				default:
+					buf.Write(make([]byte, int(dat[i+1]-2)))
+				}
+				i++
+			} else {
+				return nil, errors.New("error reading bytes. token encountered without proceeding bytes")
+			}
+		} else {
+			buf.WriteByte(dat[i])
+		}
+	}
+
+	return buf.Bytes(), nil
+}
+
+func compressChunk(dat []byte) (ret []byte, n int) {
+	switch {
+	case dat[0] == token:
+		return []byte{token, tokenToken}, 1
+	case len(dat) > 1 && dat[0] == 0x0 && dat[1] == 0x0:
+		j := 0
+		for j <= 254 && j < len(dat) {
+			if dat[j] != 0 {
+				break
+			}
+			j++
+		}
+		return []byte{token, byte(j + 2)}, j
+	case len(dat) >= 32:
+		if dat[0] == empty[0] && bytes.Compare(dat[:32], empty) == 0 {
+			return []byte{token, emptyShaToken}, 32
+		} else if dat[0] == emptyList[0] && bytes.Compare(dat[:32], emptyList) == 0 {
+			return []byte{token, emptyListShaToken}, 32
+		}
+		fallthrough
+	default:
+		return dat[:1], 1
+	}
+}
+
+func Compress(dat []byte) []byte {
+	buf := new(bytes.Buffer)
+
+	i := 0
+	for i < len(dat) {
+		b, n := compressChunk(dat[i:])
+		buf.Write(b)
+		i += n
+	}
+
+	return buf.Bytes()
+}
diff --git a/compression/rle/read_write_test.go b/compression/rle/read_write_test.go
new file mode 100644
index 000000000..e6aac9093
--- /dev/null
+++ b/compression/rle/read_write_test.go
@@ -0,0 +1,118 @@
+package rle
+
+import (
+	"testing"
+
+	checker "gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) { checker.TestingT(t) }
+
+type CompressionRleSuite struct{}
+
+var _ = checker.Suite(&CompressionRleSuite{})
+
+func (s *CompressionRleSuite) TestDecompressSimple(c *checker.C) {
+	exp := []byte{0xc5, 0xd2, 0x46, 0x1, 0x86, 0xf7, 0x23, 0x3c, 0x92, 0x7e, 0x7d, 0xb2, 0xdc, 0xc7, 0x3, 0xc0, 0xe5, 0x0, 0xb6, 0x53, 0xca, 0x82, 0x27, 0x3b, 0x7b, 0xfa, 0xd8, 0x4, 0x5d, 0x85, 0xa4, 0x70}
+	res, err := Decompress([]byte{token, 0xfd})
+	c.Assert(err, checker.IsNil)
+	c.Assert(res, checker.DeepEquals, exp)
+	// if bytes.Compare(res, exp) != 0 {
+	// 	t.Error("empty sha3", res)
+	// }
+
+	exp = []byte{0x56, 0xe8, 0x1f, 0x17, 0x1b, 0xcc, 0x55, 0xa6, 0xff, 0x83, 0x45, 0xe6, 0x92, 0xc0, 0xf8, 0x6e, 0x5b, 0x48, 0xe0, 0x1b, 0x99, 0x6c, 0xad, 0xc0, 0x1, 0x62, 0x2f, 0xb5, 0xe3, 0x63, 0xb4, 0x21}
+	res, err = Decompress([]byte{token, 0xfe})
+	c.Assert(err, checker.IsNil)
+	c.Assert(res, checker.DeepEquals, exp)
+	// if bytes.Compare(res, exp) != 0 {
+	// 	t.Error("0x80 sha3", res)
+	// }
+
+	res, err = Decompress([]byte{token, 0xff})
+	c.Assert(err, checker.IsNil)
+	c.Assert(res, checker.DeepEquals, []byte{token})
+	// if bytes.Compare(res, []byte{token}) != 0 {
+	// 	t.Error("token", res)
+	// }
+
+	res, err = Decompress([]byte{token, 12})
+	c.Assert(err, checker.IsNil)
+	c.Assert(res, checker.DeepEquals, make([]byte, 10))
+	// if bytes.Compare(res, make([]byte, 10)) != 0 {
+	// 	t.Error("10 * zero", res)
+	// }
+}
+
+// func TestDecompressMulti(t *testing.T) {
+// 	res, err := Decompress([]byte{token, 0xfd, token, 0xfe, token, 12})
+// 	if err != nil {
+// 		t.Error(err)
+// 	}
+
+// 	var exp []byte
+// 	exp = append(exp, crypto.Sha3([]byte(""))...)
+// 	exp = append(exp, crypto.Sha3([]byte{0x80})...)
+// 	exp = append(exp, make([]byte, 10)...)
+
+// 	if bytes.Compare(res, res) != 0 {
+// 		t.Error("Expected", exp, "result", res)
+// 	}
+// }
+
+// func TestCompressSimple(t *testing.T) {
+// 	res := Compress([]byte{0, 0, 0, 0, 0})
+// 	if bytes.Compare(res, []byte{token, 7}) != 0 {
+// 		t.Error("5 * zero", res)
+// 	}
+
+// 	res = Compress(crypto.Sha3([]byte("")))
+// 	if bytes.Compare(res, []byte{token, emptyShaToken}) != 0 {
+// 		t.Error("empty sha", res)
+// 	}
+
+// 	res = Compress(crypto.Sha3([]byte{0x80}))
+// 	if bytes.Compare(res, []byte{token, emptyListShaToken}) != 0 {
+// 		t.Error("empty list sha", res)
+// 	}
+
+// 	res = Compress([]byte{token})
+// 	if bytes.Compare(res, []byte{token, tokenToken}) != 0 {
+// 		t.Error("token", res)
+// 	}
+// }
+
+// func TestCompressMulti(t *testing.T) {
+// 	in := []byte{0, 0, 0, 0, 0}
+// 	in = append(in, crypto.Sha3([]byte(""))...)
+// 	in = append(in, crypto.Sha3([]byte{0x80})...)
+// 	in = append(in, token)
+// 	res := Compress(in)
+
+// 	exp := []byte{token, 7, token, emptyShaToken, token, emptyListShaToken, token, tokenToken}
+// 	if bytes.Compare(res, exp) != 0 {
+// 		t.Error("expected", exp, "got", res)
+// 	}
+// }
+
+// func TestCompressDecompress(t *testing.T) {
+// 	var in []byte
+
+// 	for i := 0; i < 20; i++ {
+// 		in = append(in, []byte{0, 0, 0, 0, 0}...)
+// 		in = append(in, crypto.Sha3([]byte(""))...)
+// 		in = append(in, crypto.Sha3([]byte{0x80})...)
+// 		in = append(in, []byte{123, 2, 19, 89, 245, 254, 255, token, 98, 233}...)
+// 		in = append(in, token)
+// 	}
+
+// 	c := Compress(in)
+// 	d, err := Decompress(c)
+// 	if err != nil {
+// 		t.Error(err)
+// 	}
+
+// 	if bytes.Compare(d, in) != 0 {
+// 		t.Error("multi failed\n", d, "\n", in)
+// 	}
+// }
diff --git a/core/.gitignore b/core/.gitignore
new file mode 100644
index 000000000..f725d58d1
--- /dev/null
+++ b/core/.gitignore
@@ -0,0 +1,12 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile ~/.gitignore_global
+
+/tmp
+*/**/*un~
+*un~
+.DS_Store
+*/**/.DS_Store
+
diff --git a/core/asm.go b/core/asm.go
new file mode 100644
index 000000000..a8b3023f4
--- /dev/null
+++ b/core/asm.go
@@ -0,0 +1,50 @@
+package core
+
+import (
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/vm"
+)
+
+func Disassemble(script []byte) (asm []string) {
+	pc := new(big.Int)
+	for {
+		if pc.Cmp(big.NewInt(int64(len(script)))) >= 0 {
+			return
+		}
+
+		// Get the memory location of pc
+		val := script[pc.Int64()]
+		// Get the opcode (it must be an opcode!)
+		op := vm.OpCode(val)
+
+		asm = append(asm, fmt.Sprintf("%04v: %v", pc, op))
+
+		switch op {
+		case vm.PUSH1, vm.PUSH2, vm.PUSH3, vm.PUSH4, vm.PUSH5, vm.PUSH6, vm.PUSH7, vm.PUSH8,
+			vm.PUSH9, vm.PUSH10, vm.PUSH11, vm.PUSH12, vm.PUSH13, vm.PUSH14, vm.PUSH15,
+			vm.PUSH16, vm.PUSH17, vm.PUSH18, vm.PUSH19, vm.PUSH20, vm.PUSH21, vm.PUSH22,
+			vm.PUSH23, vm.PUSH24, vm.PUSH25, vm.PUSH26, vm.PUSH27, vm.PUSH28, vm.PUSH29,
+			vm.PUSH30, vm.PUSH31, vm.PUSH32:
+			pc.Add(pc, ethutil.Big1)
+			a := int64(op) - int64(vm.PUSH1) + 1
+			if int(pc.Int64()+a) > len(script) {
+				return
+			}
+
+			data := script[pc.Int64() : pc.Int64()+a]
+			if len(data) == 0 {
+				data = []byte{0}
+			}
+			asm = append(asm, fmt.Sprintf("%04v: 0x%x", pc, data))
+
+			pc.Add(pc, big.NewInt(a-1))
+		}
+
+		pc.Add(pc, ethutil.Big1)
+	}
+
+	return asm
+}
diff --git a/core/block_manager.go b/core/block_manager.go
new file mode 100644
index 000000000..2567e39c4
--- /dev/null
+++ b/core/block_manager.go
@@ -0,0 +1,371 @@
+package core
+
+import (
+	"bytes"
+	"container/list"
+	"errors"
+	"fmt"
+	"math/big"
+	"sync"
+	"time"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/pow"
+	"github.com/ethereum/go-ethereum/pow/ezp"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/wire"
+)
+
+var statelogger = logger.NewLogger("BLOCK")
+
+type Peer interface {
+	Inbound() bool
+	LastSend() time.Time
+	LastPong() int64
+	Host() []byte
+	Port() uint16
+	Version() string
+	PingTime() string
+	Connected() *int32
+	Caps() *ethutil.Value
+}
+
+type EthManager interface {
+	BlockManager() *BlockManager
+	ChainManager() *ChainManager
+	TxPool() *TxPool
+	Broadcast(msgType wire.MsgType, data []interface{})
+	PeerCount() int
+	IsMining() bool
+	IsListening() bool
+	Peers() *list.List
+	KeyManager() *crypto.KeyManager
+	ClientIdentity() wire.ClientIdentity
+	Db() ethutil.Database
+	EventMux() *event.TypeMux
+}
+
+type BlockManager struct {
+	// Mutex for locking the block processor. Blocks can only be handled one at a time
+	mutex sync.Mutex
+	// Canonical block chain
+	bc *ChainManager
+	// non-persistent key/value memory storage
+	mem map[string]*big.Int
+	// Proof of work used for validating
+	Pow pow.PoW
+
+	txpool *TxPool
+
+	// The last attempted block is mainly used for debugging purposes
+	// This does not have to be a valid block and will be set during
+	// 'Process' & canonical validation.
+	lastAttemptedBlock *types.Block
+
+	events event.Subscription
+
+	eventMux *event.TypeMux
+}
+
+func NewBlockManager(txpool *TxPool, chainManager *ChainManager, eventMux *event.TypeMux) *BlockManager {
+	sm := &BlockManager{
+		mem:      make(map[string]*big.Int),
+		Pow:      ezp.New(),
+		bc:       chainManager,
+		eventMux: eventMux,
+		txpool:   txpool,
+	}
+
+	return sm
+}
+
+func (sm *BlockManager) TransitionState(statedb *state.StateDB, parent, block *types.Block) (receipts types.Receipts, err error) {
+	coinbase := statedb.GetOrNewStateObject(block.Coinbase)
+	coinbase.SetGasPool(block.CalcGasLimit(parent))
+
+	// Process the transactions on to current block
+	receipts, _, _, _, err = sm.ApplyTransactions(coinbase, statedb, block, block.Transactions(), false)
+	if err != nil {
+		return nil, err
+	}
+
+	return receipts, nil
+}
+
+func (self *BlockManager) ApplyTransactions(coinbase *state.StateObject, state *state.StateDB, block *types.Block, txs types.Transactions, transientProcess bool) (types.Receipts, types.Transactions, types.Transactions, types.Transactions, error) {
+	var (
+		receipts           types.Receipts
+		handled, unhandled types.Transactions
+		erroneous          types.Transactions
+		totalUsedGas       = big.NewInt(0)
+		err                error
+		cumulativeSum      = new(big.Int)
+	)
+
+done:
+	for i, tx := range txs {
+		// If we are mining this block and validating we want to set the logs back to 0
+		state.EmptyLogs()
+
+		txGas := new(big.Int).Set(tx.Gas())
+
+		cb := state.GetStateObject(coinbase.Address())
+		st := NewStateTransition(cb, tx, state, block)
+		_, err = st.TransitionState()
+		if err != nil {
+			switch {
+			case IsNonceErr(err):
+				err = nil // ignore error
+				continue
+			case IsGasLimitErr(err):
+				unhandled = txs[i:]
+
+				break done
+			default:
+				statelogger.Infoln(err)
+				erroneous = append(erroneous, tx)
+				err = nil
+			}
+		}
+
+		txGas.Sub(txGas, st.gas)
+		cumulativeSum.Add(cumulativeSum, new(big.Int).Mul(txGas, tx.GasPrice()))
+
+		// Update the state with pending changes
+		state.Update(txGas)
+
+		cumulative := new(big.Int).Set(totalUsedGas.Add(totalUsedGas, txGas))
+		receipt := types.NewReceipt(state.Root(), cumulative)
+		receipt.SetLogs(state.Logs())
+		receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
+		chainlogger.Debugln(receipt)
+
+		// Notify all subscribers
+		if !transientProcess {
+			go self.eventMux.Post(TxPostEvent{tx})
+		}
+
+		receipts = append(receipts, receipt)
+		handled = append(handled, tx)
+
+		if ethutil.Config.Diff && ethutil.Config.DiffType == "all" {
+			state.CreateOutputForDiff()
+		}
+	}
+
+	block.Reward = cumulativeSum
+	block.GasUsed = totalUsedGas
+
+	return receipts, handled, unhandled, erroneous, err
+}
+
+func (sm *BlockManager) Process(block *types.Block) (td *big.Int, msgs state.Messages, err error) {
+	// Processing a blocks may never happen simultaneously
+	sm.mutex.Lock()
+	defer sm.mutex.Unlock()
+
+	if sm.bc.HasBlock(block.Hash()) {
+		return nil, nil, &KnownBlockError{block.Number, block.Hash()}
+	}
+
+	if !sm.bc.HasBlock(block.PrevHash) {
+		return nil, nil, ParentError(block.PrevHash)
+	}
+	parent := sm.bc.GetBlock(block.PrevHash)
+
+	return sm.ProcessWithParent(block, parent)
+}
+
+func (sm *BlockManager) ProcessWithParent(block, parent *types.Block) (td *big.Int, messages state.Messages, err error) {
+	sm.lastAttemptedBlock = block
+
+	state := parent.State().Copy()
+
+	// Defer the Undo on the Trie. If the block processing happened
+	// we don't want to undo but since undo only happens on dirty
+	// nodes this won't happen because Commit would have been called
+	// before that.
+	defer state.Reset()
+
+	// Block validation
+	if err = sm.ValidateBlock(block, parent); err != nil {
+		return
+	}
+
+	receipts, err := sm.TransitionState(state, parent, block)
+	if err != nil {
+		return
+	}
+
+	rbloom := types.CreateBloom(receipts)
+	if bytes.Compare(rbloom, block.LogsBloom) != 0 {
+		err = fmt.Errorf("unable to replicate block's bloom=%x", rbloom)
+		return
+	}
+
+	txSha := types.DeriveSha(block.Transactions())
+	if bytes.Compare(txSha, block.TxSha) != 0 {
+		err = fmt.Errorf("validating transaction root. received=%x got=%x", block.TxSha, txSha)
+		return
+	}
+
+	receiptSha := types.DeriveSha(receipts)
+	if bytes.Compare(receiptSha, block.ReceiptSha) != 0 {
+		//chainlogger.Debugf("validating receipt root. received=%x got=%x", block.ReceiptSha, receiptSha)
+		fmt.Printf("%x\n", ethutil.Encode(receipts))
+		err = fmt.Errorf("validating receipt root. received=%x got=%x", block.ReceiptSha, receiptSha)
+		return
+	}
+
+	if err = sm.AccumelateRewards(state, block, parent); err != nil {
+		return
+	}
+
+	state.Update(ethutil.Big0)
+
+	if !block.State().Cmp(state) {
+		err = fmt.Errorf("invalid merkle root. received=%x got=%x", block.Root(), state.Root())
+		return
+	}
+
+	// Calculate the new total difficulty and sync back to the db
+	if td, ok := sm.CalculateTD(block); ok {
+		// Sync the current block's state to the database and cancelling out the deferred Undo
+		state.Sync()
+
+		messages := state.Manifest().Messages
+		state.Manifest().Reset()
+
+		chainlogger.Infof("Processed block #%d (%x...)\n", block.Number, block.Hash()[0:4])
+
+		sm.txpool.RemoveSet(block.Transactions())
+
+		return td, messages, nil
+	} else {
+		return nil, nil, errors.New("total diff failed")
+	}
+}
+
+func (sm *BlockManager) CalculateTD(block *types.Block) (*big.Int, bool) {
+	uncleDiff := new(big.Int)
+	for _, uncle := range block.Uncles {
+		uncleDiff = uncleDiff.Add(uncleDiff, uncle.Difficulty)
+	}
+
+	// TD(genesis_block) = 0 and TD(B) = TD(B.parent) + sum(u.difficulty for u in B.uncles) + B.difficulty
+	td := new(big.Int)
+	td = td.Add(sm.bc.Td(), uncleDiff)
+	td = td.Add(td, block.Difficulty)
+
+	// The new TD will only be accepted if the new difficulty is
+	// is greater than the previous.
+	if td.Cmp(sm.bc.Td()) > 0 {
+		return td, true
+	}
+
+	return nil, false
+}
+
+// Validates the current block. Returns an error if the block was invalid,
+// an uncle or anything that isn't on the current block chain.
+// Validation validates easy over difficult (dagger takes longer time = difficult)
+func (sm *BlockManager) ValidateBlock(block, parent *types.Block) error {
+	expd := CalcDifficulty(block, parent)
+	if expd.Cmp(block.Difficulty) < 0 {
+		return fmt.Errorf("Difficulty check failed for block %v, %v", block.Difficulty, expd)
+	}
+
+	diff := block.Time - parent.Time
+	if diff < 0 {
+		return ValidationError("Block timestamp less then prev block %v (%v - %v)", diff, block.Time, sm.bc.CurrentBlock().Time)
+	}
+
+	/* XXX
+	// New blocks must be within the 15 minute range of the last block.
+	if diff > int64(15*time.Minute) {
+		return ValidationError("Block is too far in the future of last block (> 15 minutes)")
+	}
+	*/
+
+	// Verify the nonce of the block. Return an error if it's not valid
+	if !sm.Pow.Verify(block /*block.HashNoNonce(), block.Difficulty, block.Nonce*/) {
+		return ValidationError("Block's nonce is invalid (= %v)", ethutil.Bytes2Hex(block.Nonce))
+	}
+
+	return nil
+}
+
+func (sm *BlockManager) AccumelateRewards(statedb *state.StateDB, block, parent *types.Block) error {
+	reward := new(big.Int).Set(BlockReward)
+
+	knownUncles := ethutil.Set(parent.Uncles)
+	nonces := ethutil.NewSet(block.Nonce)
+	for _, uncle := range block.Uncles {
+		if nonces.Include(uncle.Nonce) {
+			// Error not unique
+			return UncleError("Uncle not unique")
+		}
+
+		uncleParent := sm.bc.GetBlock(uncle.PrevHash)
+		if uncleParent == nil {
+			return UncleError(fmt.Sprintf("Uncle's parent unknown (%x)", uncle.PrevHash[0:4]))
+		}
+
+		if uncleParent.Number.Cmp(new(big.Int).Sub(parent.Number, big.NewInt(6))) < 0 {
+			return UncleError("Uncle too old")
+		}
+
+		if knownUncles.Include(uncle.Hash()) {
+			return UncleError("Uncle in chain")
+		}
+
+		nonces.Insert(uncle.Nonce)
+
+		r := new(big.Int)
+		r.Mul(BlockReward, big.NewInt(15)).Div(r, big.NewInt(16))
+
+		uncleAccount := statedb.GetAccount(uncle.Coinbase)
+		uncleAccount.AddAmount(r)
+
+		reward.Add(reward, new(big.Int).Div(BlockReward, big.NewInt(32)))
+	}
+
+	// Get the account associated with the coinbase
+	account := statedb.GetAccount(block.Coinbase)
+	// Reward amount of ether to the coinbase address
+	account.AddAmount(reward)
+
+	statedb.Manifest().AddMessage(&state.Message{
+		To:     block.Coinbase,
+		Input:  nil,
+		Origin: nil,
+		Block:  block.Hash(), Timestamp: block.Time, Coinbase: block.Coinbase, Number: block.Number,
+		Value: new(big.Int).Add(reward, block.Reward),
+	})
+
+	return nil
+}
+
+func (sm *BlockManager) GetMessages(block *types.Block) (messages []*state.Message, err error) {
+	if !sm.bc.HasBlock(block.PrevHash) {
+		return nil, ParentError(block.PrevHash)
+	}
+
+	sm.lastAttemptedBlock = block
+
+	var (
+		parent = sm.bc.GetBlock(block.PrevHash)
+		state  = parent.State().Copy()
+	)
+
+	defer state.Reset()
+
+	sm.TransitionState(state, parent, block)
+	sm.AccumelateRewards(state, block, parent)
+
+	return state.Manifest().Messages, nil
+}
diff --git a/core/chain_manager.go b/core/chain_manager.go
new file mode 100644
index 000000000..794ae0011
--- /dev/null
+++ b/core/chain_manager.go
@@ -0,0 +1,355 @@
+package core
+
+import (
+	"fmt"
+	"math/big"
+	"sync"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/state"
+)
+
+var chainlogger = logger.NewLogger("CHAIN")
+
+func AddTestNetFunds(block *types.Block) {
+	for _, addr := range []string{
+		"51ba59315b3a95761d0863b05ccc7a7f54703d99",
+		"e4157b34ea9615cfbde6b4fda419828124b70c78",
+		"b9c015918bdaba24b4ff057a92a3873d6eb201be",
+		"6c386a4b26f73c802f34673f7248bb118f97424a",
+		"cd2a3d9f938e13cd947ec05abc7fe734df8dd826",
+		"2ef47100e0787b915105fd5e3f4ff6752079d5cb",
+		"e6716f9544a56c530d868e4bfbacb172315bdead",
+		"1a26338f0d905e295fccb71fa9ea849ffa12aaf4",
+	} {
+		codedAddr := ethutil.Hex2Bytes(addr)
+		account := block.State().GetAccount(codedAddr)
+		account.SetBalance(ethutil.Big("1606938044258990275541962092341162602522202993782792835301376")) //ethutil.BigPow(2, 200)
+		block.State().UpdateStateObject(account)
+	}
+}
+
+func CalcDifficulty(block, parent *types.Block) *big.Int {
+	diff := new(big.Int)
+
+	adjust := new(big.Int).Rsh(parent.Difficulty, 10)
+	if block.Time >= parent.Time+5 {
+		diff.Sub(parent.Difficulty, adjust)
+	} else {
+		diff.Add(parent.Difficulty, adjust)
+	}
+
+	return diff
+}
+
+type ChainManager struct {
+	//eth          EthManager
+	processor    types.BlockProcessor
+	eventMux     *event.TypeMux
+	genesisBlock *types.Block
+	// Last known total difficulty
+	mu              sync.RWMutex
+	td              *big.Int
+	lastBlockNumber uint64
+	currentBlock    *types.Block
+	lastBlockHash   []byte
+
+	transState *state.StateDB
+}
+
+func (self *ChainManager) Td() *big.Int {
+	self.mu.RLock()
+	defer self.mu.RUnlock()
+
+	return self.td
+}
+
+func (self *ChainManager) LastBlockNumber() uint64 {
+	self.mu.RLock()
+	defer self.mu.RUnlock()
+
+	return self.lastBlockNumber
+}
+
+func (self *ChainManager) LastBlockHash() []byte {
+	self.mu.RLock()
+	defer self.mu.RUnlock()
+
+	return self.lastBlockHash
+}
+
+func (self *ChainManager) CurrentBlock() *types.Block {
+	self.mu.RLock()
+	defer self.mu.RUnlock()
+
+	return self.currentBlock
+}
+
+func NewChainManager(mux *event.TypeMux) *ChainManager {
+	bc := &ChainManager{}
+	bc.genesisBlock = types.NewBlockFromBytes(ethutil.Encode(Genesis))
+	bc.eventMux = mux
+
+	bc.setLastBlock()
+
+	bc.transState = bc.State().Copy()
+
+	return bc
+}
+
+func (self *ChainManager) SetProcessor(proc types.BlockProcessor) {
+	self.processor = proc
+}
+
+func (self *ChainManager) State() *state.StateDB {
+	return self.CurrentBlock().State()
+}
+
+func (self *ChainManager) TransState() *state.StateDB {
+	return self.transState
+}
+
+func (bc *ChainManager) setLastBlock() {
+	data, _ := ethutil.Config.Db.Get([]byte("LastBlock"))
+	if len(data) != 0 {
+		// Prep genesis
+		AddTestNetFunds(bc.genesisBlock)
+
+		block := types.NewBlockFromBytes(data)
+		bc.currentBlock = block
+		bc.lastBlockHash = block.Hash()
+		bc.lastBlockNumber = block.Number.Uint64()
+
+		// Set the last know difficulty (might be 0x0 as initial value, Genesis)
+		bc.td = ethutil.BigD(ethutil.Config.Db.LastKnownTD())
+	} else {
+		bc.Reset()
+	}
+
+	chainlogger.Infof("Last block (#%d) %x\n", bc.lastBlockNumber, bc.currentBlock.Hash())
+}
+
+// Block creation & chain handling
+func (bc *ChainManager) NewBlock(coinbase []byte) *types.Block {
+	bc.mu.RLock()
+	defer bc.mu.RUnlock()
+
+	var root interface{}
+	hash := ZeroHash256
+
+	if bc.CurrentBlock != nil {
+		root = bc.currentBlock.Root()
+		hash = bc.lastBlockHash
+	}
+
+	block := types.CreateBlock(
+		root,
+		hash,
+		coinbase,
+		ethutil.BigPow(2, 32),
+		nil,
+		"")
+
+	parent := bc.currentBlock
+	if parent != nil {
+		block.Difficulty = CalcDifficulty(block, parent)
+		block.Number = new(big.Int).Add(bc.currentBlock.Number, ethutil.Big1)
+		block.GasLimit = block.CalcGasLimit(bc.currentBlock)
+
+	}
+
+	return block
+}
+
+func (bc *ChainManager) Reset() {
+	bc.mu.Lock()
+	defer bc.mu.Unlock()
+
+	AddTestNetFunds(bc.genesisBlock)
+
+	bc.genesisBlock.Trie().Sync()
+	// Prepare the genesis block
+	bc.write(bc.genesisBlock)
+	bc.insert(bc.genesisBlock)
+	bc.currentBlock = bc.genesisBlock
+
+	bc.setTotalDifficulty(ethutil.Big("0"))
+
+	// Set the last know difficulty (might be 0x0 as initial value, Genesis)
+	bc.td = ethutil.BigD(ethutil.Config.Db.LastKnownTD())
+}
+
+func (self *ChainManager) Export() []byte {
+	self.mu.RLock()
+	defer self.mu.RUnlock()
+
+	chainlogger.Infof("exporting %v blocks...\n", self.currentBlock.Number)
+
+	blocks := make([]*types.Block, int(self.currentBlock.Number.Int64())+1)
+	for block := self.currentBlock; block != nil; block = self.GetBlock(block.PrevHash) {
+		blocks[block.Number.Int64()] = block
+	}
+
+	return ethutil.Encode(blocks)
+}
+
+func (bc *ChainManager) insert(block *types.Block) {
+	encodedBlock := block.RlpEncode()
+	ethutil.Config.Db.Put([]byte("LastBlock"), encodedBlock)
+	bc.currentBlock = block
+	bc.lastBlockHash = block.Hash()
+}
+
+func (bc *ChainManager) write(block *types.Block) {
+	bc.writeBlockInfo(block)
+
+	encodedBlock := block.RlpEncode()
+	ethutil.Config.Db.Put(block.Hash(), encodedBlock)
+}
+
+// Accessors
+func (bc *ChainManager) Genesis() *types.Block {
+	return bc.genesisBlock
+}
+
+// Block fetching methods
+func (bc *ChainManager) HasBlock(hash []byte) bool {
+	data, _ := ethutil.Config.Db.Get(hash)
+	return len(data) != 0
+}
+
+func (self *ChainManager) GetChainHashesFromHash(hash []byte, max uint64) (chain [][]byte) {
+	block := self.GetBlock(hash)
+	if block == nil {
+		return
+	}
+
+	// XXX Could be optimised by using a different database which only holds hashes (i.e., linked list)
+	for i := uint64(0); i < max; i++ {
+		chain = append(chain, block.Hash())
+
+		if block.Number.Cmp(ethutil.Big0) <= 0 {
+			break
+		}
+
+		block = self.GetBlock(block.PrevHash)
+	}
+
+	return
+}
+
+func (self *ChainManager) GetBlock(hash []byte) *types.Block {
+	data, _ := ethutil.Config.Db.Get(hash)
+	if len(data) == 0 {
+		return nil
+	}
+
+	return types.NewBlockFromBytes(data)
+}
+
+func (self *ChainManager) GetBlockByNumber(num uint64) *types.Block {
+	self.mu.RLock()
+	defer self.mu.RUnlock()
+
+	block := self.currentBlock
+	for ; block != nil; block = self.GetBlock(block.PrevHash) {
+		if block.Number.Uint64() == num {
+			break
+		}
+	}
+
+	if block != nil && block.Number.Uint64() == 0 && num != 0 {
+		return nil
+	}
+
+	return block
+}
+
+func (bc *ChainManager) setTotalDifficulty(td *big.Int) {
+	ethutil.Config.Db.Put([]byte("LTD"), td.Bytes())
+	bc.td = td
+}
+
+func (self *ChainManager) CalcTotalDiff(block *types.Block) (*big.Int, error) {
+	parent := self.GetBlock(block.PrevHash)
+	if parent == nil {
+		return nil, fmt.Errorf("Unable to calculate total diff without known parent %x", block.PrevHash)
+	}
+
+	parentTd := parent.BlockInfo().TD
+
+	uncleDiff := new(big.Int)
+	for _, uncle := range block.Uncles {
+		uncleDiff = uncleDiff.Add(uncleDiff, uncle.Difficulty)
+	}
+
+	td := new(big.Int)
+	td = td.Add(parentTd, uncleDiff)
+	td = td.Add(td, block.Difficulty)
+
+	return td, nil
+}
+
+func (bc *ChainManager) BlockInfo(block *types.Block) types.BlockInfo {
+	bi := types.BlockInfo{}
+	data, _ := ethutil.Config.Db.Get(append(block.Hash(), []byte("Info")...))
+	bi.RlpDecode(data)
+
+	return bi
+}
+
+// Unexported method for writing extra non-essential block info to the db
+func (bc *ChainManager) writeBlockInfo(block *types.Block) {
+	bc.lastBlockNumber++
+	bi := types.BlockInfo{Number: bc.lastBlockNumber, Hash: block.Hash(), Parent: block.PrevHash, TD: bc.td}
+
+	// For now we use the block hash with the words "info" appended as key
+	ethutil.Config.Db.Put(append(block.Hash(), []byte("Info")...), bi.RlpEncode())
+}
+
+func (bc *ChainManager) Stop() {
+	if bc.CurrentBlock != nil {
+		chainlogger.Infoln("Stopped")
+	}
+}
+
+func (self *ChainManager) InsertChain(chain types.Blocks) error {
+	for _, block := range chain {
+		td, messages, err := self.processor.Process(block)
+		if err != nil {
+			if IsKnownBlockErr(err) {
+				continue
+			}
+
+			chainlogger.Infof("block #%v process failed (%x)\n", block.Number, block.Hash()[:4])
+			chainlogger.Infoln(block)
+			chainlogger.Infoln(err)
+			return err
+		}
+
+		self.mu.Lock()
+		{
+
+			self.write(block)
+			if td.Cmp(self.td) > 0 {
+				if block.Number.Cmp(new(big.Int).Add(self.currentBlock.Number, ethutil.Big1)) < 0 {
+					chainlogger.Infof("Split detected. New head #%v (%x), was #%v (%x)\n", block.Number, block.Hash()[:4], self.currentBlock.Number, self.currentBlock.Hash()[:4])
+				}
+
+				self.setTotalDifficulty(td)
+				self.insert(block)
+				self.transState = self.currentBlock.State().Copy()
+			}
+
+		}
+		self.mu.Unlock()
+
+		self.eventMux.Post(NewBlockEvent{block})
+		self.eventMux.Post(messages)
+	}
+
+	return nil
+}
diff --git a/core/chain_manager_test.go b/core/chain_manager_test.go
new file mode 100644
index 000000000..52be8b0ea
--- /dev/null
+++ b/core/chain_manager_test.go
@@ -0,0 +1,77 @@
+package core
+
+import (
+	"fmt"
+	"path"
+	"runtime"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/event"
+	//logpkg "github.com/ethereum/go-ethereum/logger"
+)
+
+//var Logger logpkg.LogSystem
+//var Log = logpkg.NewLogger("TEST")
+
+func init() {
+	runtime.GOMAXPROCS(runtime.NumCPU())
+	//Logger = logpkg.NewStdLogSystem(os.Stdout, log.LstdFlags, logpkg.InfoLevel)
+	//logpkg.AddLogSystem(Logger)
+
+	ethutil.ReadConfig("/tmp/ethtest", "/tmp/ethtest", "ETH")
+
+	db, err := ethdb.NewMemDatabase()
+	if err != nil {
+		panic("Could not create mem-db, failing")
+	}
+	ethutil.Config.Db = db
+}
+
+func loadChain(fn string, t *testing.T) types.Blocks {
+	c1, err := ethutil.ReadAllFile(path.Join("..", "_data", fn))
+	if err != nil {
+		fmt.Println(err)
+		t.FailNow()
+	}
+	value := ethutil.NewValueFromBytes([]byte(c1))
+	blocks := make(types.Blocks, value.Len())
+	it := value.NewIterator()
+	for it.Next() {
+		blocks[it.Idx()] = types.NewBlockFromRlpValue(it.Value())
+	}
+
+	return blocks
+}
+
+func insertChain(done chan bool, chainMan *ChainManager, chain types.Blocks, t *testing.T) {
+	err := chainMan.InsertChain(chain)
+	if err != nil {
+		fmt.Println(err)
+		t.FailNow()
+	}
+	done <- true
+}
+
+func TestChainInsertions(t *testing.T) {
+	chain1 := loadChain("chain1", t)
+	chain2 := loadChain("chain2", t)
+	var eventMux event.TypeMux
+	chainMan := NewChainManager(&eventMux)
+	txPool := NewTxPool(chainMan, nil, &eventMux)
+	blockMan := NewBlockManager(txPool, chainMan, &eventMux)
+	chainMan.SetProcessor(blockMan)
+
+	const max = 2
+	done := make(chan bool, max)
+
+	go insertChain(done, chainMan, chain1, t)
+	go insertChain(done, chainMan, chain2, t)
+
+	for i := 0; i < max; i++ {
+		<-done
+	}
+	fmt.Println(chainMan.CurrentBlock())
+}
diff --git a/core/dagger.go b/core/dagger.go
new file mode 100644
index 000000000..3039d8995
--- /dev/null
+++ b/core/dagger.go
@@ -0,0 +1,160 @@
+package core
+
+import (
+	"hash"
+	"math/big"
+	"math/rand"
+	"time"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/obscuren/sha3"
+)
+
+var powlogger = logger.NewLogger("POW")
+
+type Dagger struct {
+	hash *big.Int
+	xn   *big.Int
+}
+
+var Found bool
+
+func (dag *Dagger) Find(obj *big.Int, resChan chan int64) {
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
+
+	for i := 0; i < 1000; i++ {
+		rnd := r.Int63()
+
+		res := dag.Eval(big.NewInt(rnd))
+		powlogger.Infof("rnd %v\nres %v\nobj %v\n", rnd, res, obj)
+		if res.Cmp(obj) < 0 {
+			// Post back result on the channel
+			resChan <- rnd
+			// Notify other threads we've found a valid nonce
+			Found = true
+		}
+
+		// Break out if found
+		if Found {
+			break
+		}
+	}
+
+	resChan <- 0
+}
+
+func (dag *Dagger) Search(hash, diff *big.Int) *big.Int {
+	// TODO fix multi threading. Somehow it results in the wrong nonce
+	amountOfRoutines := 1
+
+	dag.hash = hash
+
+	obj := ethutil.BigPow(2, 256)
+	obj = obj.Div(obj, diff)
+
+	Found = false
+	resChan := make(chan int64, 3)
+	var res int64
+
+	for k := 0; k < amountOfRoutines; k++ {
+		go dag.Find(obj, resChan)
+
+		// Wait for each go routine to finish
+	}
+	for k := 0; k < amountOfRoutines; k++ {
+		// Get the result from the channel. 0 = quit
+		if r := <-resChan; r != 0 {
+			res = r
+		}
+	}
+
+	return big.NewInt(res)
+}
+
+func (dag *Dagger) Verify(hash, diff, nonce *big.Int) bool {
+	dag.hash = hash
+
+	obj := ethutil.BigPow(2, 256)
+	obj = obj.Div(obj, diff)
+
+	return dag.Eval(nonce).Cmp(obj) < 0
+}
+
+func DaggerVerify(hash, diff, nonce *big.Int) bool {
+	dagger := &Dagger{}
+	dagger.hash = hash
+
+	obj := ethutil.BigPow(2, 256)
+	obj = obj.Div(obj, diff)
+
+	return dagger.Eval(nonce).Cmp(obj) < 0
+}
+
+func (dag *Dagger) Node(L uint64, i uint64) *big.Int {
+	if L == i {
+		return dag.hash
+	}
+
+	var m *big.Int
+	if L == 9 {
+		m = big.NewInt(16)
+	} else {
+		m = big.NewInt(3)
+	}
+
+	sha := sha3.NewKeccak256()
+	sha.Reset()
+	d := sha3.NewKeccak256()
+	b := new(big.Int)
+	ret := new(big.Int)
+
+	for k := 0; k < int(m.Uint64()); k++ {
+		d.Reset()
+		d.Write(dag.hash.Bytes())
+		d.Write(dag.xn.Bytes())
+		d.Write(big.NewInt(int64(L)).Bytes())
+		d.Write(big.NewInt(int64(i)).Bytes())
+		d.Write(big.NewInt(int64(k)).Bytes())
+
+		b.SetBytes(Sum(d))
+		pk := b.Uint64() & ((1 << ((L - 1) * 3)) - 1)
+		sha.Write(dag.Node(L-1, pk).Bytes())
+	}
+
+	ret.SetBytes(Sum(sha))
+
+	return ret
+}
+
+func Sum(sha hash.Hash) []byte {
+	//in := make([]byte, 32)
+	return sha.Sum(nil)
+}
+
+func (dag *Dagger) Eval(N *big.Int) *big.Int {
+	pow := ethutil.BigPow(2, 26)
+	dag.xn = pow.Div(N, pow)
+
+	sha := sha3.NewKeccak256()
+	sha.Reset()
+	ret := new(big.Int)
+
+	for k := 0; k < 4; k++ {
+		d := sha3.NewKeccak256()
+		b := new(big.Int)
+
+		d.Reset()
+		d.Write(dag.hash.Bytes())
+		d.Write(dag.xn.Bytes())
+		d.Write(N.Bytes())
+		d.Write(big.NewInt(int64(k)).Bytes())
+
+		b.SetBytes(Sum(d))
+		pk := (b.Uint64() & 0x1ffffff)
+
+		sha.Write(dag.Node(9, pk).Bytes())
+	}
+
+	return ret.SetBytes(Sum(sha))
+}
diff --git a/core/dagger_test.go b/core/dagger_test.go
new file mode 100644
index 000000000..e80064e6b
--- /dev/null
+++ b/core/dagger_test.go
@@ -0,0 +1,19 @@
+package core
+
+import (
+	"math/big"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+func BenchmarkDaggerSearch(b *testing.B) {
+	hash := big.NewInt(0)
+	diff := ethutil.BigPow(2, 36)
+	o := big.NewInt(0) // nonce doesn't matter. We're only testing against speed, not validity
+
+	// Reset timer so the big generation isn't included in the benchmark
+	b.ResetTimer()
+	// Validate
+	DaggerVerify(hash, diff, o)
+}
diff --git a/core/error.go b/core/error.go
new file mode 100644
index 000000000..11d8c1653
--- /dev/null
+++ b/core/error.go
@@ -0,0 +1,141 @@
+package core
+
+import (
+	"fmt"
+	"math/big"
+)
+
+// Parent error. In case a parent is unknown this error will be thrown
+// by the block manager
+type ParentErr struct {
+	Message string
+}
+
+func (err *ParentErr) Error() string {
+	return err.Message
+}
+
+func ParentError(hash []byte) error {
+	return &ParentErr{Message: fmt.Sprintf("Block's parent unkown %x", hash)}
+}
+
+func IsParentErr(err error) bool {
+	_, ok := err.(*ParentErr)
+
+	return ok
+}
+
+type UncleErr struct {
+	Message string
+}
+
+func (err *UncleErr) Error() string {
+	return err.Message
+}
+
+func UncleError(str string) error {
+	return &UncleErr{Message: str}
+}
+
+func IsUncleErr(err error) bool {
+	_, ok := err.(*UncleErr)
+
+	return ok
+}
+
+// Block validation error. If any validation fails, this error will be thrown
+type ValidationErr struct {
+	Message string
+}
+
+func (err *ValidationErr) Error() string {
+	return err.Message
+}
+
+func ValidationError(format string, v ...interface{}) *ValidationErr {
+	return &ValidationErr{Message: fmt.Sprintf(format, v...)}
+}
+
+func IsValidationErr(err error) bool {
+	_, ok := err.(*ValidationErr)
+
+	return ok
+}
+
+type GasLimitErr struct {
+	Message string
+	Is, Max *big.Int
+}
+
+func IsGasLimitErr(err error) bool {
+	_, ok := err.(*GasLimitErr)
+
+	return ok
+}
+func (err *GasLimitErr) Error() string {
+	return err.Message
+}
+func GasLimitError(is, max *big.Int) *GasLimitErr {
+	return &GasLimitErr{Message: fmt.Sprintf("GasLimit error. Max %s, transaction would take it to %s", max, is), Is: is, Max: max}
+}
+
+type NonceErr struct {
+	Message string
+	Is, Exp uint64
+}
+
+func (err *NonceErr) Error() string {
+	return err.Message
+}
+
+func NonceError(is, exp uint64) *NonceErr {
+	return &NonceErr{Message: fmt.Sprintf("Nonce err. Is %d, expected %d", is, exp), Is: is, Exp: exp}
+}
+
+func IsNonceErr(err error) bool {
+	_, ok := err.(*NonceErr)
+
+	return ok
+}
+
+type OutOfGasErr struct {
+	Message string
+}
+
+func OutOfGasError() *OutOfGasErr {
+	return &OutOfGasErr{Message: "Out of gas"}
+}
+func (self *OutOfGasErr) Error() string {
+	return self.Message
+}
+
+func IsOutOfGasErr(err error) bool {
+	_, ok := err.(*OutOfGasErr)
+
+	return ok
+}
+
+type TDError struct {
+	a, b *big.Int
+}
+
+func (self *TDError) Error() string {
+	return fmt.Sprintf("incoming chain has a lower or equal TD (%v <= %v)", self.a, self.b)
+}
+func IsTDError(e error) bool {
+	_, ok := e.(*TDError)
+	return ok
+}
+
+type KnownBlockError struct {
+	number *big.Int
+	hash   []byte
+}
+
+func (self *KnownBlockError) Error() string {
+	return fmt.Sprintf("block %v already known (%x)", self.number, self.hash[0:4])
+}
+func IsKnownBlockErr(e error) bool {
+	_, ok := e.(*KnownBlockError)
+	return ok
+}
diff --git a/core/events.go b/core/events.go
new file mode 100644
index 000000000..deeba3e98
--- /dev/null
+++ b/core/events.go
@@ -0,0 +1,12 @@
+package core
+
+import "github.com/ethereum/go-ethereum/core/types"
+
+// TxPreEvent is posted when a transaction enters the transaction pool.
+type TxPreEvent struct{ Tx *types.Transaction }
+
+// TxPostEvent is posted when a transaction has been processed.
+type TxPostEvent struct{ Tx *types.Transaction }
+
+// NewBlockEvent is posted when a block has been imported.
+type NewBlockEvent struct{ Block *types.Block }
diff --git a/core/execution.go b/core/execution.go
new file mode 100644
index 000000000..b7eead0dd
--- /dev/null
+++ b/core/execution.go
@@ -0,0 +1,71 @@
+package core
+
+import (
+	"fmt"
+	"math/big"
+	"time"
+
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/vm"
+)
+
+type Execution struct {
+	env               vm.Environment
+	address, input    []byte
+	Gas, price, value *big.Int
+	SkipTransfer      bool
+}
+
+func NewExecution(env vm.Environment, address, input []byte, gas, gasPrice, value *big.Int) *Execution {
+	return &Execution{env: env, address: address, input: input, Gas: gas, price: gasPrice, value: value}
+}
+
+func (self *Execution) Addr() []byte {
+	return self.address
+}
+
+func (self *Execution) Call(codeAddr []byte, caller vm.ClosureRef) ([]byte, error) {
+	// Retrieve the executing code
+	code := self.env.State().GetCode(codeAddr)
+
+	return self.exec(code, codeAddr, caller)
+}
+
+func (self *Execution) exec(code, contextAddr []byte, caller vm.ClosureRef) (ret []byte, err error) {
+	env := self.env
+	evm := vm.New(env, vm.DebugVmTy)
+
+	if env.Depth() == vm.MaxCallDepth {
+		// Consume all gas (by not returning it) and return a depth error
+		return nil, vm.DepthError{}
+	}
+
+	from, to := env.State().GetStateObject(caller.Address()), env.State().GetOrNewStateObject(self.address)
+	// Skipping transfer is used on testing for the initial call
+	if !self.SkipTransfer {
+		err = env.Transfer(from, to, self.value)
+		if err != nil {
+			caller.ReturnGas(self.Gas, self.price)
+
+			err = fmt.Errorf("Insufficient funds to transfer value. Req %v, has %v", self.value, from.Balance)
+			return
+		}
+	}
+
+	snapshot := env.State().Copy()
+	start := time.Now()
+	ret, err = evm.Run(to, caller, code, self.value, self.Gas, self.price, self.input)
+	if err != nil {
+		env.State().Set(snapshot)
+	}
+	chainlogger.Debugf("vm took %v\n", time.Since(start))
+
+	return
+}
+
+func (self *Execution) Create(caller vm.ClosureRef) (ret []byte, err error, account *state.StateObject) {
+	ret, err = self.exec(self.input, nil, caller)
+	account = self.env.State().GetStateObject(self.address)
+
+	return
+}
diff --git a/core/fees.go b/core/fees.go
new file mode 100644
index 000000000..bbce01b84
--- /dev/null
+++ b/core/fees.go
@@ -0,0 +1,7 @@
+package core
+
+import (
+	"math/big"
+)
+
+var BlockReward *big.Int = big.NewInt(1.5e+18)
diff --git a/core/filter.go b/core/filter.go
new file mode 100644
index 000000000..fb992782d
--- /dev/null
+++ b/core/filter.go
@@ -0,0 +1,200 @@
+package core
+
+import (
+	"bytes"
+	"math"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+)
+
+type AccountChange struct {
+	Address, StateAddress []byte
+}
+
+// Filtering interface
+type Filter struct {
+	eth      EthManager
+	earliest int64
+	latest   int64
+	skip     int
+	from, to [][]byte
+	max      int
+
+	Altered []AccountChange
+
+	BlockCallback   func(*types.Block)
+	MessageCallback func(state.Messages)
+}
+
+// Create a new filter which uses a bloom filter on blocks to figure out whether a particular block
+// is interesting or not.
+func NewFilter(eth EthManager) *Filter {
+	return &Filter{eth: eth}
+}
+
+func (self *Filter) AddAltered(address, stateAddress []byte) {
+	self.Altered = append(self.Altered, AccountChange{address, stateAddress})
+}
+
+// Set the earliest and latest block for filtering.
+// -1 = latest block (i.e., the current block)
+// hash = particular hash from-to
+func (self *Filter) SetEarliestBlock(earliest int64) {
+	self.earliest = earliest
+}
+
+func (self *Filter) SetLatestBlock(latest int64) {
+	self.latest = latest
+}
+
+func (self *Filter) SetFrom(addr [][]byte) {
+	self.from = addr
+}
+
+func (self *Filter) AddFrom(addr []byte) {
+	self.from = append(self.from, addr)
+}
+
+func (self *Filter) SetTo(addr [][]byte) {
+	self.to = addr
+}
+
+func (self *Filter) AddTo(addr []byte) {
+	self.to = append(self.to, addr)
+}
+
+func (self *Filter) SetMax(max int) {
+	self.max = max
+}
+
+func (self *Filter) SetSkip(skip int) {
+	self.skip = skip
+}
+
+// Run filters messages with the current parameters set
+func (self *Filter) Find() []*state.Message {
+	var earliestBlockNo uint64 = uint64(self.earliest)
+	if self.earliest == -1 {
+		earliestBlockNo = self.eth.ChainManager().CurrentBlock().Number.Uint64()
+	}
+	var latestBlockNo uint64 = uint64(self.latest)
+	if self.latest == -1 {
+		latestBlockNo = self.eth.ChainManager().CurrentBlock().Number.Uint64()
+	}
+
+	var (
+		messages []*state.Message
+		block    = self.eth.ChainManager().GetBlockByNumber(latestBlockNo)
+		quit     bool
+	)
+	for i := 0; !quit && block != nil; i++ {
+		// Quit on latest
+		switch {
+		case block.Number.Uint64() == earliestBlockNo, block.Number.Uint64() == 0:
+			quit = true
+		case self.max <= len(messages):
+			break
+		}
+
+		// Use bloom filtering to see if this block is interesting given the
+		// current parameters
+		if self.bloomFilter(block) {
+			// Get the messages of the block
+			msgs, err := self.eth.BlockManager().GetMessages(block)
+			if err != nil {
+				chainlogger.Warnln("err: filter get messages ", err)
+
+				break
+			}
+
+			messages = append(messages, self.FilterMessages(msgs)...)
+		}
+
+		block = self.eth.ChainManager().GetBlock(block.PrevHash)
+	}
+
+	skip := int(math.Min(float64(len(messages)), float64(self.skip)))
+
+	return messages[skip:]
+}
+
+func includes(addresses [][]byte, a []byte) (found bool) {
+	for _, addr := range addresses {
+		if bytes.Compare(addr, a) == 0 {
+			return true
+		}
+	}
+
+	return
+}
+
+func (self *Filter) FilterMessages(msgs []*state.Message) []*state.Message {
+	var messages []*state.Message
+
+	// Filter the messages for interesting stuff
+	for _, message := range msgs {
+		if len(self.to) > 0 && !includes(self.to, message.To) {
+			continue
+		}
+
+		if len(self.from) > 0 && !includes(self.from, message.From) {
+			continue
+		}
+
+		var match bool
+		if len(self.Altered) == 0 {
+			match = true
+		}
+
+		for _, accountChange := range self.Altered {
+			if len(accountChange.Address) > 0 && bytes.Compare(message.To, accountChange.Address) != 0 {
+				continue
+			}
+
+			if len(accountChange.StateAddress) > 0 && !includes(message.ChangedAddresses, accountChange.StateAddress) {
+				continue
+			}
+
+			match = true
+			break
+		}
+
+		if !match {
+			continue
+		}
+
+		messages = append(messages, message)
+	}
+
+	return messages
+}
+
+func (self *Filter) bloomFilter(block *types.Block) bool {
+	var fromIncluded, toIncluded bool
+	if len(self.from) > 0 {
+		for _, from := range self.from {
+			if types.BloomLookup(block.LogsBloom, from) || bytes.Equal(block.Coinbase, from) {
+				fromIncluded = true
+				break
+			}
+		}
+	} else {
+		fromIncluded = true
+	}
+
+	if len(self.to) > 0 {
+		for _, to := range self.to {
+			if types.BloomLookup(block.LogsBloom, ethutil.U256(new(big.Int).Add(ethutil.Big1, ethutil.BigD(to))).Bytes()) || bytes.Equal(block.Coinbase, to) {
+				toIncluded = true
+				break
+			}
+		}
+	} else {
+		toIncluded = true
+	}
+
+	return fromIncluded && toIncluded
+}
diff --git a/core/filter_test.go b/core/filter_test.go
new file mode 100644
index 000000000..9a8bc9592
--- /dev/null
+++ b/core/filter_test.go
@@ -0,0 +1 @@
+package core
diff --git a/core/genesis.go b/core/genesis.go
new file mode 100644
index 000000000..707154759
--- /dev/null
+++ b/core/genesis.go
@@ -0,0 +1,52 @@
+package core
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+/*
+ * This is the special genesis block.
+ */
+
+var ZeroHash256 = make([]byte, 32)
+var ZeroHash160 = make([]byte, 20)
+var ZeroHash512 = make([]byte, 64)
+var EmptyShaList = crypto.Sha3(ethutil.Encode([]interface{}{}))
+var EmptyListRoot = crypto.Sha3(ethutil.Encode(""))
+
+var GenesisHeader = []interface{}{
+	// Previous hash (none)
+	ZeroHash256,
+	// Empty uncles
+	EmptyShaList,
+	// Coinbase
+	ZeroHash160,
+	// Root state
+	EmptyShaList,
+	// tx root
+	EmptyListRoot,
+	// receipt root
+	EmptyListRoot,
+	// bloom
+	ZeroHash512,
+	// Difficulty
+	//ethutil.BigPow(2, 22),
+	big.NewInt(131072),
+	// Number
+	ethutil.Big0,
+	// Block upper gas bound
+	big.NewInt(1000000),
+	// Block gas used
+	ethutil.Big0,
+	// Time
+	ethutil.Big0,
+	// Extra
+	nil,
+	// Nonce
+	crypto.Sha3(big.NewInt(42).Bytes()),
+}
+
+var Genesis = []interface{}{GenesisHeader, []interface{}{}, []interface{}{}}
diff --git a/core/helper_test.go b/core/helper_test.go
new file mode 100644
index 000000000..b340144fd
--- /dev/null
+++ b/core/helper_test.go
@@ -0,0 +1,93 @@
+package core
+
+import (
+	"container/list"
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/wire"
+)
+
+// Implement our EthTest Manager
+type TestManager struct {
+	// stateManager *StateManager
+	eventMux *event.TypeMux
+
+	db         ethutil.Database
+	txPool     *TxPool
+	blockChain *ChainManager
+	Blocks     []*types.Block
+}
+
+func (s *TestManager) IsListening() bool {
+	return false
+}
+
+func (s *TestManager) IsMining() bool {
+	return false
+}
+
+func (s *TestManager) PeerCount() int {
+	return 0
+}
+
+func (s *TestManager) Peers() *list.List {
+	return list.New()
+}
+
+func (s *TestManager) ChainManager() *ChainManager {
+	return s.blockChain
+}
+
+func (tm *TestManager) TxPool() *TxPool {
+	return tm.txPool
+}
+
+// func (tm *TestManager) StateManager() *StateManager {
+// 	return tm.stateManager
+// }
+
+func (tm *TestManager) EventMux() *event.TypeMux {
+	return tm.eventMux
+}
+func (tm *TestManager) Broadcast(msgType wire.MsgType, data []interface{}) {
+	fmt.Println("Broadcast not implemented")
+}
+
+func (tm *TestManager) ClientIdentity() wire.ClientIdentity {
+	return nil
+}
+func (tm *TestManager) KeyManager() *crypto.KeyManager {
+	return nil
+}
+
+func (tm *TestManager) Db() ethutil.Database {
+	return tm.db
+}
+
+func NewTestManager() *TestManager {
+	ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "ETH")
+
+	db, err := ethdb.NewMemDatabase()
+	if err != nil {
+		fmt.Println("Could not create mem-db, failing")
+		return nil
+	}
+	ethutil.Config.Db = db
+
+	testManager := &TestManager{}
+	testManager.eventMux = new(event.TypeMux)
+	testManager.db = db
+	// testManager.txPool = NewTxPool(testManager)
+	// testManager.blockChain = NewChainManager(testManager)
+	// testManager.stateManager = NewStateManager(testManager)
+
+	// Start the tx pool
+	testManager.txPool.Start()
+
+	return testManager
+}
diff --git a/core/simple_pow.go b/core/simple_pow.go
new file mode 100644
index 000000000..9a8bc9592
--- /dev/null
+++ b/core/simple_pow.go
@@ -0,0 +1 @@
+package core
diff --git a/core/state_transition.go b/core/state_transition.go
new file mode 100644
index 000000000..7b7026c29
--- /dev/null
+++ b/core/state_transition.go
@@ -0,0 +1,238 @@
+package core
+
+import (
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/vm"
+)
+
+/*
+ * The State transitioning model
+ *
+ * A state transition is a change made when a transaction is applied to the current world state
+ * The state transitioning model does all all the necessary work to work out a valid new state root.
+ * 1) Nonce handling
+ * 2) Pre pay / buy gas of the coinbase (miner)
+ * 3) Create a new state object if the recipient is \0*32
+ * 4) Value transfer
+ * == If contract creation ==
+ * 4a) Attempt to run transaction data
+ * 4b) If valid, use result as code for the new state object
+ * == end ==
+ * 5) Run Script section
+ * 6) Derive new state root
+ */
+type StateTransition struct {
+	coinbase, receiver []byte
+	msg                Message
+	gas, gasPrice      *big.Int
+	initialGas         *big.Int
+	value              *big.Int
+	data               []byte
+	state              *state.StateDB
+	block              *types.Block
+
+	cb, rec, sen *state.StateObject
+
+	Env vm.Environment
+}
+
+type Message interface {
+	Hash() []byte
+
+	From() []byte
+	To() []byte
+
+	GasPrice() *big.Int
+	Gas() *big.Int
+	Value() *big.Int
+
+	Nonce() uint64
+	Data() []byte
+}
+
+func AddressFromMessage(msg Message) []byte {
+	// Generate a new address
+	return crypto.Sha3(ethutil.NewValue([]interface{}{msg.From(), msg.Nonce()}).Encode())[12:]
+}
+
+func MessageCreatesContract(msg Message) bool {
+	return len(msg.To()) == 0
+}
+
+func MessageGasValue(msg Message) *big.Int {
+	return new(big.Int).Mul(msg.Gas(), msg.GasPrice())
+}
+
+func NewStateTransition(coinbase *state.StateObject, msg Message, state *state.StateDB, block *types.Block) *StateTransition {
+	return &StateTransition{coinbase.Address(), msg.To(), msg, new(big.Int), new(big.Int).Set(msg.GasPrice()), new(big.Int), msg.Value(), msg.Data(), state, block, coinbase, nil, nil, nil}
+}
+
+func (self *StateTransition) VmEnv() vm.Environment {
+	if self.Env == nil {
+		self.Env = NewEnv(self.state, self.msg, self.block)
+	}
+
+	return self.Env
+}
+
+func (self *StateTransition) Coinbase() *state.StateObject {
+	return self.state.GetOrNewStateObject(self.coinbase)
+}
+func (self *StateTransition) From() *state.StateObject {
+	return self.state.GetOrNewStateObject(self.msg.From())
+}
+func (self *StateTransition) To() *state.StateObject {
+	if self.msg != nil && MessageCreatesContract(self.msg) {
+		return nil
+	}
+	return self.state.GetOrNewStateObject(self.msg.To())
+}
+
+func (self *StateTransition) UseGas(amount *big.Int) error {
+	if self.gas.Cmp(amount) < 0 {
+		return OutOfGasError()
+	}
+	self.gas.Sub(self.gas, amount)
+
+	return nil
+}
+
+func (self *StateTransition) AddGas(amount *big.Int) {
+	self.gas.Add(self.gas, amount)
+}
+
+func (self *StateTransition) BuyGas() error {
+	var err error
+
+	sender := self.From()
+	if sender.Balance().Cmp(MessageGasValue(self.msg)) < 0 {
+		return fmt.Errorf("insufficient ETH for gas (%x). Req %v, has %v", sender.Address()[:4], MessageGasValue(self.msg), sender.Balance())
+	}
+
+	coinbase := self.Coinbase()
+	err = coinbase.BuyGas(self.msg.Gas(), self.msg.GasPrice())
+	if err != nil {
+		return err
+	}
+
+	self.AddGas(self.msg.Gas())
+	self.initialGas.Set(self.msg.Gas())
+	sender.SubAmount(MessageGasValue(self.msg))
+
+	return nil
+}
+
+func (self *StateTransition) preCheck() (err error) {
+	var (
+		msg    = self.msg
+		sender = self.From()
+	)
+
+	// Make sure this transaction's nonce is correct
+	if sender.Nonce != msg.Nonce() {
+		return NonceError(msg.Nonce(), sender.Nonce)
+	}
+
+	// Pre-pay gas / Buy gas of the coinbase account
+	if err = self.BuyGas(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (self *StateTransition) TransitionState() (ret []byte, err error) {
+	statelogger.Debugf("(~) %x\n", self.msg.Hash())
+
+	// XXX Transactions after this point are considered valid.
+	if err = self.preCheck(); err != nil {
+		return
+	}
+
+	var (
+		msg    = self.msg
+		sender = self.From()
+	)
+
+	defer self.RefundGas()
+
+	// Increment the nonce for the next transaction
+	sender.Nonce += 1
+
+	// Transaction gas
+	if err = self.UseGas(vm.GasTx); err != nil {
+		return
+	}
+
+	// Pay data gas
+	var dgas int64
+	for _, byt := range self.data {
+		if byt != 0 {
+			dgas += vm.GasData.Int64()
+		} else {
+			dgas += 1 // This is 1/5. If GasData changes this fails
+		}
+	}
+	if err = self.UseGas(big.NewInt(dgas)); err != nil {
+		return
+	}
+
+	vmenv := self.VmEnv()
+	var ref vm.ClosureRef
+	if MessageCreatesContract(msg) {
+		contract := MakeContract(msg, self.state)
+		ret, err, ref = vmenv.Create(sender, contract.Address(), self.msg.Data(), self.gas, self.gasPrice, self.value)
+		if err == nil {
+			dataGas := big.NewInt(int64(len(ret)))
+			dataGas.Mul(dataGas, vm.GasCreateByte)
+			if err = self.UseGas(dataGas); err == nil {
+				//self.state.SetCode(ref.Address(), ret)
+				ref.SetCode(ret)
+			}
+		}
+	} else {
+		ret, err = vmenv.Call(self.From(), self.To().Address(), self.msg.Data(), self.gas, self.gasPrice, self.value)
+	}
+
+	if err != nil {
+		self.UseGas(self.gas)
+	}
+
+	return
+}
+
+// Converts an transaction in to a state object
+func MakeContract(msg Message, state *state.StateDB) *state.StateObject {
+	addr := AddressFromMessage(msg)
+
+	contract := state.GetOrNewStateObject(addr)
+	contract.InitCode = msg.Data()
+
+	return contract
+}
+
+func (self *StateTransition) RefundGas() {
+	coinbase, sender := self.Coinbase(), self.From()
+	// Return remaining gas
+	remaining := new(big.Int).Mul(self.gas, self.msg.GasPrice())
+	sender.AddAmount(remaining)
+
+	uhalf := new(big.Int).Div(self.GasUsed(), ethutil.Big2)
+	for addr, ref := range self.state.Refunds() {
+		refund := ethutil.BigMin(uhalf, ref)
+		self.gas.Add(self.gas, refund)
+		self.state.AddBalance([]byte(addr), refund.Mul(refund, self.msg.GasPrice()))
+	}
+
+	coinbase.RefundGas(self.gas, self.msg.GasPrice())
+}
+
+func (self *StateTransition) GasUsed() *big.Int {
+	return new(big.Int).Sub(self.initialGas, self.gas)
+}
diff --git a/core/transaction_pool.go b/core/transaction_pool.go
new file mode 100644
index 000000000..58c2255a4
--- /dev/null
+++ b/core/transaction_pool.go
@@ -0,0 +1,233 @@
+package core
+
+import (
+	"bytes"
+	"container/list"
+	"fmt"
+	"math/big"
+	"sync"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/wire"
+)
+
+var txplogger = logger.NewLogger("TXP")
+
+const txPoolQueueSize = 50
+
+type TxPoolHook chan *types.Transaction
+type TxMsgTy byte
+
+const (
+	minGasPrice = 1000000
+)
+
+var MinGasPrice = big.NewInt(10000000000000)
+
+type TxMsg struct {
+	Tx   *types.Transaction
+	Type TxMsgTy
+}
+
+func EachTx(pool *list.List, it func(*types.Transaction, *list.Element) bool) {
+	for e := pool.Front(); e != nil; e = e.Next() {
+		if it(e.Value.(*types.Transaction), e) {
+			break
+		}
+	}
+}
+
+func FindTx(pool *list.List, finder func(*types.Transaction, *list.Element) bool) *types.Transaction {
+	for e := pool.Front(); e != nil; e = e.Next() {
+		if tx, ok := e.Value.(*types.Transaction); ok {
+			if finder(tx, e) {
+				return tx
+			}
+		}
+	}
+
+	return nil
+}
+
+type TxProcessor interface {
+	ProcessTransaction(tx *types.Transaction)
+}
+
+// The tx pool a thread safe transaction pool handler. In order to
+// guarantee a non blocking pool we use a queue channel which can be
+// independently read without needing access to the actual pool. If the
+// pool is being drained or synced for whatever reason the transactions
+// will simple queue up and handled when the mutex is freed.
+type TxPool struct {
+	// The mutex for accessing the Tx pool.
+	mutex sync.Mutex
+	// Queueing channel for reading and writing incoming
+	// transactions to
+	queueChan chan *types.Transaction
+	// Quiting channel
+	quit chan bool
+	// The actual pool
+	pool *list.List
+
+	SecondaryProcessor TxProcessor
+
+	subscribers []chan TxMsg
+
+	broadcaster  types.Broadcaster
+	chainManager *ChainManager
+	eventMux     *event.TypeMux
+}
+
+func NewTxPool(chainManager *ChainManager, broadcaster types.Broadcaster, eventMux *event.TypeMux) *TxPool {
+	return &TxPool{
+		pool:         list.New(),
+		queueChan:    make(chan *types.Transaction, txPoolQueueSize),
+		quit:         make(chan bool),
+		chainManager: chainManager,
+		eventMux:     eventMux,
+		broadcaster:  broadcaster,
+	}
+}
+
+// Blocking function. Don't use directly. Use QueueTransaction instead
+func (pool *TxPool) addTransaction(tx *types.Transaction) {
+	pool.mutex.Lock()
+	defer pool.mutex.Unlock()
+
+	pool.pool.PushBack(tx)
+
+	// Broadcast the transaction to the rest of the peers
+	pool.broadcaster.Broadcast(wire.MsgTxTy, []interface{}{tx.RlpData()})
+}
+
+func (pool *TxPool) ValidateTransaction(tx *types.Transaction) error {
+	// Get the last block so we can retrieve the sender and receiver from
+	// the merkle trie
+	block := pool.chainManager.CurrentBlock
+	// Something has gone horribly wrong if this happens
+	if block == nil {
+		return fmt.Errorf("No last block on the block chain")
+	}
+
+	if len(tx.To()) != 0 && len(tx.To()) != 20 {
+		return fmt.Errorf("Invalid recipient. len = %d", len(tx.To()))
+	}
+
+	v, _, _ := tx.Curve()
+	if v > 28 || v < 27 {
+		return fmt.Errorf("tx.v != (28 || 27)")
+	}
+
+	// Get the sender
+	sender := pool.chainManager.State().GetAccount(tx.Sender())
+
+	totAmount := new(big.Int).Set(tx.Value())
+	// Make sure there's enough in the sender's account. Having insufficient
+	// funds won't invalidate this transaction but simple ignores it.
+	if sender.Balance().Cmp(totAmount) < 0 {
+		return fmt.Errorf("Insufficient amount in sender's (%x) account", tx.From())
+	}
+
+	// Increment the nonce making each tx valid only once to prevent replay
+	// attacks
+
+	return nil
+}
+
+func (self *TxPool) Add(tx *types.Transaction) error {
+	hash := tx.Hash()
+	foundTx := FindTx(self.pool, func(tx *types.Transaction, e *list.Element) bool {
+		return bytes.Compare(tx.Hash(), hash) == 0
+	})
+
+	if foundTx != nil {
+		return fmt.Errorf("Known transaction (%x)", hash[0:4])
+	}
+
+	err := self.ValidateTransaction(tx)
+	if err != nil {
+		return err
+	}
+
+	self.addTransaction(tx)
+
+	txplogger.Debugf("(t) %x => %x (%v) %x\n", tx.From()[:4], tx.To()[:4], tx.Value, tx.Hash())
+
+	// Notify the subscribers
+	go self.eventMux.Post(TxPreEvent{tx})
+
+	return nil
+}
+
+func (self *TxPool) Size() int {
+	return self.pool.Len()
+}
+
+func (pool *TxPool) CurrentTransactions() []*types.Transaction {
+	pool.mutex.Lock()
+	defer pool.mutex.Unlock()
+
+	txList := make([]*types.Transaction, pool.pool.Len())
+	i := 0
+	for e := pool.pool.Front(); e != nil; e = e.Next() {
+		tx := e.Value.(*types.Transaction)
+
+		txList[i] = tx
+
+		i++
+	}
+
+	return txList
+}
+
+func (pool *TxPool) RemoveInvalid(state *state.StateDB) {
+	pool.mutex.Lock()
+	defer pool.mutex.Unlock()
+
+	for e := pool.pool.Front(); e != nil; e = e.Next() {
+		tx := e.Value.(*types.Transaction)
+		sender := state.GetAccount(tx.Sender())
+		err := pool.ValidateTransaction(tx)
+		if err != nil || sender.Nonce >= tx.Nonce() {
+			pool.pool.Remove(e)
+		}
+	}
+}
+
+func (self *TxPool) RemoveSet(txs types.Transactions) {
+	self.mutex.Lock()
+	defer self.mutex.Unlock()
+
+	for _, tx := range txs {
+		EachTx(self.pool, func(t *types.Transaction, element *list.Element) bool {
+			if t == tx {
+				self.pool.Remove(element)
+				return true // To stop the loop
+			}
+			return false
+		})
+	}
+}
+
+func (pool *TxPool) Flush() []*types.Transaction {
+	txList := pool.CurrentTransactions()
+
+	// Recreate a new list all together
+	// XXX Is this the fastest way?
+	pool.pool = list.New()
+
+	return txList
+}
+
+func (pool *TxPool) Start() {
+	//go pool.queueHandler()
+}
+
+func (pool *TxPool) Stop() {
+	pool.Flush()
+
+	txplogger.Infoln("Stopped")
+}
diff --git a/core/types/block.go b/core/types/block.go
new file mode 100644
index 000000000..2d889f35f
--- /dev/null
+++ b/core/types/block.go
@@ -0,0 +1,416 @@
+package types
+
+import (
+	"bytes"
+	"fmt"
+	"math/big"
+	"sort"
+	"time"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/trie"
+)
+
+type BlockInfo struct {
+	Number uint64
+	Hash   []byte
+	Parent []byte
+	TD     *big.Int
+}
+
+func (bi *BlockInfo) RlpDecode(data []byte) {
+	decoder := ethutil.NewValueFromBytes(data)
+
+	bi.Number = decoder.Get(0).Uint()
+	bi.Hash = decoder.Get(1).Bytes()
+	bi.Parent = decoder.Get(2).Bytes()
+	bi.TD = decoder.Get(3).BigInt()
+}
+
+func (bi *BlockInfo) RlpEncode() []byte {
+	return ethutil.Encode([]interface{}{bi.Number, bi.Hash, bi.Parent, bi.TD})
+}
+
+type Blocks []*Block
+
+func (self Blocks) AsSet() ethutil.UniqueSet {
+	set := make(ethutil.UniqueSet)
+	for _, block := range self {
+		set.Insert(block.Hash())
+	}
+
+	return set
+}
+
+type BlockBy func(b1, b2 *Block) bool
+
+func (self BlockBy) Sort(blocks Blocks) {
+	bs := blockSorter{
+		blocks: blocks,
+		by:     self,
+	}
+	sort.Sort(bs)
+}
+
+type blockSorter struct {
+	blocks Blocks
+	by     func(b1, b2 *Block) bool
+}
+
+func (self blockSorter) Len() int { return len(self.blocks) }
+func (self blockSorter) Swap(i, j int) {
+	self.blocks[i], self.blocks[j] = self.blocks[j], self.blocks[i]
+}
+func (self blockSorter) Less(i, j int) bool { return self.by(self.blocks[i], self.blocks[j]) }
+
+func Number(b1, b2 *Block) bool { return b1.Number.Cmp(b2.Number) < 0 }
+
+type Block struct {
+	// Hash to the previous block
+	PrevHash ethutil.Bytes
+	// Uncles of this block
+	Uncles   Blocks
+	UncleSha []byte
+	// The coin base address
+	Coinbase []byte
+	// Block Trie state
+	//state *ethutil.Trie
+	state *state.StateDB
+	// Difficulty for the current block
+	Difficulty *big.Int
+	// Creation time
+	Time int64
+	// The block number
+	Number *big.Int
+	// Gas limit
+	GasLimit *big.Int
+	// Gas used
+	GasUsed *big.Int
+	// Extra data
+	Extra string
+	// Block Nonce for verification
+	Nonce ethutil.Bytes
+	// List of transactions and/or contracts
+	transactions      Transactions
+	receipts          Receipts
+	TxSha, ReceiptSha []byte
+	LogsBloom         []byte
+
+	Reward *big.Int
+}
+
+func NewBlockFromBytes(raw []byte) *Block {
+	block := &Block{}
+	block.RlpDecode(raw)
+
+	return block
+}
+
+// New block takes a raw encoded string
+func NewBlockFromRlpValue(rlpValue *ethutil.Value) *Block {
+	block := &Block{}
+	block.RlpValueDecode(rlpValue)
+
+	return block
+}
+
+func CreateBlock(root interface{},
+	prevHash []byte,
+	base []byte,
+	Difficulty *big.Int,
+	Nonce []byte,
+	extra string) *Block {
+
+	block := &Block{
+		PrevHash:   prevHash,
+		Coinbase:   base,
+		Difficulty: Difficulty,
+		Nonce:      Nonce,
+		Time:       time.Now().Unix(),
+		Extra:      extra,
+		UncleSha:   nil,
+		GasUsed:    new(big.Int),
+		GasLimit:   new(big.Int),
+	}
+	block.SetUncles([]*Block{})
+
+	block.state = state.New(trie.New(ethutil.Config.Db, root))
+
+	return block
+}
+
+// Returns a hash of the block
+func (block *Block) Hash() ethutil.Bytes {
+	return crypto.Sha3(ethutil.NewValue(block.header()).Encode())
+	//return crypto.Sha3(block.Value().Encode())
+}
+
+func (block *Block) HashNoNonce() []byte {
+	return crypto.Sha3(ethutil.Encode(block.miningHeader()))
+}
+
+func (block *Block) State() *state.StateDB {
+	return block.state
+}
+
+func (block *Block) Transactions() Transactions {
+	return block.transactions
+}
+
+func (block *Block) CalcGasLimit(parent *Block) *big.Int {
+	if block.Number.Cmp(big.NewInt(0)) == 0 {
+		return ethutil.BigPow(10, 6)
+	}
+
+	// ((1024-1) * parent.gasLimit + (gasUsed * 6 / 5)) / 1024
+
+	previous := new(big.Int).Mul(big.NewInt(1024-1), parent.GasLimit)
+	current := new(big.Rat).Mul(new(big.Rat).SetInt(parent.GasUsed), big.NewRat(6, 5))
+	curInt := new(big.Int).Div(current.Num(), current.Denom())
+
+	result := new(big.Int).Add(previous, curInt)
+	result.Div(result, big.NewInt(1024))
+
+	min := big.NewInt(125000)
+
+	return ethutil.BigMax(min, result)
+}
+
+func (block *Block) BlockInfo() BlockInfo {
+	bi := BlockInfo{}
+	data, _ := ethutil.Config.Db.Get(append(block.Hash(), []byte("Info")...))
+	bi.RlpDecode(data)
+
+	return bi
+}
+
+func (self *Block) GetTransaction(hash []byte) *Transaction {
+	for _, tx := range self.transactions {
+		if bytes.Compare(tx.Hash(), hash) == 0 {
+			return tx
+		}
+	}
+
+	return nil
+}
+
+// Sync the block's state and contract respectively
+func (block *Block) Sync() {
+	block.state.Sync()
+}
+
+func (block *Block) Undo() {
+	// Sync the block state itself
+	block.state.Reset()
+}
+
+/////// Block Encoding
+func (block *Block) rlpReceipts() interface{} {
+	// Marshal the transactions of this block
+	encR := make([]interface{}, len(block.receipts))
+	for i, r := range block.receipts {
+		// Cast it to a string (safe)
+		encR[i] = r.RlpData()
+	}
+
+	return encR
+}
+
+func (block *Block) rlpUncles() interface{} {
+	// Marshal the transactions of this block
+	uncles := make([]interface{}, len(block.Uncles))
+	for i, uncle := range block.Uncles {
+		// Cast it to a string (safe)
+		uncles[i] = uncle.header()
+	}
+
+	return uncles
+}
+
+func (block *Block) SetUncles(uncles []*Block) {
+	block.Uncles = uncles
+	block.UncleSha = crypto.Sha3(ethutil.Encode(block.rlpUncles()))
+}
+
+func (self *Block) SetReceipts(receipts Receipts) {
+	self.receipts = receipts
+	self.ReceiptSha = DeriveSha(receipts)
+	self.LogsBloom = CreateBloom(receipts)
+}
+
+func (self *Block) SetTransactions(txs Transactions) {
+	self.transactions = txs
+	self.TxSha = DeriveSha(txs)
+}
+
+func (block *Block) Value() *ethutil.Value {
+	return ethutil.NewValue([]interface{}{block.header(), block.transactions, block.rlpUncles()})
+}
+
+func (block *Block) RlpEncode() []byte {
+	// Encode a slice interface which contains the header and the list of
+	// transactions.
+	return block.Value().Encode()
+}
+
+func (block *Block) RlpDecode(data []byte) {
+	rlpValue := ethutil.NewValueFromBytes(data)
+	block.RlpValueDecode(rlpValue)
+}
+
+func (block *Block) RlpValueDecode(decoder *ethutil.Value) {
+	block.setHeader(decoder.Get(0))
+
+	// Tx list might be empty if this is an uncle. Uncles only have their
+	// header set.
+	if decoder.Get(1).IsNil() == false { // Yes explicitness
+		//receipts := decoder.Get(1)
+		//block.receipts = make([]*Receipt, receipts.Len())
+		txs := decoder.Get(1)
+		block.transactions = make(Transactions, txs.Len())
+		for i := 0; i < txs.Len(); i++ {
+			block.transactions[i] = NewTransactionFromValue(txs.Get(i))
+			//receipt := NewRecieptFromValue(receipts.Get(i))
+			//block.transactions[i] = receipt.Tx
+			//block.receipts[i] = receipt
+		}
+
+	}
+
+	if decoder.Get(2).IsNil() == false { // Yes explicitness
+		uncles := decoder.Get(2)
+		block.Uncles = make([]*Block, uncles.Len())
+		for i := 0; i < uncles.Len(); i++ {
+			block.Uncles[i] = NewUncleBlockFromValue(uncles.Get(i))
+		}
+	}
+
+}
+
+func (self *Block) setHeader(header *ethutil.Value) {
+	self.PrevHash = header.Get(0).Bytes()
+	self.UncleSha = header.Get(1).Bytes()
+	self.Coinbase = header.Get(2).Bytes()
+	self.state = state.New(trie.New(ethutil.Config.Db, header.Get(3).Val))
+	self.TxSha = header.Get(4).Bytes()
+	self.ReceiptSha = header.Get(5).Bytes()
+	self.LogsBloom = header.Get(6).Bytes()
+	self.Difficulty = header.Get(7).BigInt()
+	self.Number = header.Get(8).BigInt()
+	self.GasLimit = header.Get(9).BigInt()
+	self.GasUsed = header.Get(10).BigInt()
+	self.Time = int64(header.Get(11).BigInt().Uint64())
+	self.Extra = header.Get(12).Str()
+	self.Nonce = header.Get(13).Bytes()
+}
+
+func NewUncleBlockFromValue(header *ethutil.Value) *Block {
+	block := &Block{}
+	block.setHeader(header)
+
+	return block
+}
+
+func (block *Block) Trie() *trie.Trie {
+	return block.state.Trie
+}
+
+func (block *Block) Root() interface{} {
+	return block.state.Root()
+}
+
+func (block *Block) Diff() *big.Int {
+	return block.Difficulty
+}
+
+func (self *Block) Receipts() []*Receipt {
+	return self.receipts
+}
+
+func (block *Block) miningHeader() []interface{} {
+	return []interface{}{
+		// Sha of the previous block
+		block.PrevHash,
+		// Sha of uncles
+		block.UncleSha,
+		// Coinbase address
+		block.Coinbase,
+		// root state
+		block.Root(),
+		// tx root
+		block.TxSha,
+		// Sha of tx
+		block.ReceiptSha,
+		// Bloom
+		block.LogsBloom,
+		// Current block Difficulty
+		block.Difficulty,
+		// The block number
+		block.Number,
+		// Block upper gas bound
+		block.GasLimit,
+		// Block gas used
+		block.GasUsed,
+		// Time the block was found?
+		block.Time,
+		// Extra data
+		block.Extra,
+	}
+}
+
+func (block *Block) header() []interface{} {
+	return append(block.miningHeader(), block.Nonce)
+}
+
+func (block *Block) String() string {
+	return fmt.Sprintf(`
+	BLOCK(%x): Size: %v
+	PrevHash:   %x
+	UncleSha:   %x
+	Coinbase:   %x
+	Root:       %x
+	TxSha       %x
+	ReceiptSha: %x
+	Bloom:      %x
+	Difficulty: %v
+	Number:     %v
+	MaxLimit:   %v
+	GasUsed:    %v
+	Time:       %v
+	Extra:      %v
+	Nonce:      %x
+	NumTx:      %v
+`,
+		block.Hash(),
+		block.Size(),
+		block.PrevHash,
+		block.UncleSha,
+		block.Coinbase,
+		block.Root(),
+		block.TxSha,
+		block.ReceiptSha,
+		block.LogsBloom,
+		block.Difficulty,
+		block.Number,
+		block.GasLimit,
+		block.GasUsed,
+		block.Time,
+		block.Extra,
+		block.Nonce,
+		len(block.transactions),
+	)
+}
+
+func (self *Block) Size() ethutil.StorageSize {
+	return ethutil.StorageSize(len(self.RlpEncode()))
+}
+
+// Implement RlpEncodable
+func (self *Block) RlpData() interface{} {
+	return []interface{}{self.header(), self.transactions, self.rlpUncles()}
+}
+
+// Implement pow.Block
+func (self *Block) N() []byte { return self.Nonce }
diff --git a/core/types/bloom9.go b/core/types/bloom9.go
new file mode 100644
index 000000000..c1841e553
--- /dev/null
+++ b/core/types/bloom9.go
@@ -0,0 +1,54 @@
+package types
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+)
+
+func CreateBloom(receipts Receipts) []byte {
+	bin := new(big.Int)
+	for _, receipt := range receipts {
+		bin.Or(bin, LogsBloom(receipt.logs))
+	}
+
+	return ethutil.LeftPadBytes(bin.Bytes(), 64)
+}
+
+func LogsBloom(logs state.Logs) *big.Int {
+	bin := new(big.Int)
+	for _, log := range logs {
+		data := make([][]byte, len(log.Topics())+1)
+		data[0] = log.Address()
+
+		for i, topic := range log.Topics() {
+			data[i+1] = topic
+		}
+
+		for _, b := range data {
+			bin.Or(bin, ethutil.BigD(bloom9(crypto.Sha3(b)).Bytes()))
+		}
+	}
+
+	return bin
+}
+
+func bloom9(b []byte) *big.Int {
+	r := new(big.Int)
+	for _, i := range []int{0, 2, 4} {
+		t := big.NewInt(1)
+		b := uint(b[i+1]) + 256*(uint(b[i])&1)
+		r.Or(r, t.Lsh(t, b))
+	}
+
+	return r
+}
+
+func BloomLookup(bin, topic []byte) bool {
+	bloom := ethutil.BigD(bin)
+	cmp := bloom9(crypto.Sha3(topic))
+
+	return bloom.And(bloom, cmp).Cmp(cmp) == 0
+}
diff --git a/core/types/bloom9_test.go b/core/types/bloom9_test.go
new file mode 100644
index 000000000..74e00cac6
--- /dev/null
+++ b/core/types/bloom9_test.go
@@ -0,0 +1,31 @@
+package types
+
+/*
+import (
+	"testing"
+
+	"github.com/ethereum/go-ethereum/state"
+)
+
+func TestBloom9(t *testing.T) {
+	testCase := []byte("testtest")
+	bin := LogsBloom([]state.Log{
+		{testCase, [][]byte{[]byte("hellohello")}, nil},
+	}).Bytes()
+	res := BloomLookup(bin, testCase)
+
+	if !res {
+		t.Errorf("Bloom lookup failed")
+	}
+}
+
+
+func TestAddress(t *testing.T) {
+	block := &Block{}
+	block.Coinbase = ethutil.Hex2Bytes("22341ae42d6dd7384bc8584e50419ea3ac75b83f")
+	fmt.Printf("%x\n", crypto.Sha3(block.Coinbase))
+
+	bin := CreateBloom(block)
+	fmt.Printf("bin = %x\n", ethutil.LeftPadBytes(bin, 64))
+}
+*/
diff --git a/core/types/common.go b/core/types/common.go
new file mode 100644
index 000000000..89cb5f498
--- /dev/null
+++ b/core/types/common.go
@@ -0,0 +1,16 @@
+package types
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/wire"
+)
+
+type BlockProcessor interface {
+	Process(*Block) (*big.Int, state.Messages, error)
+}
+
+type Broadcaster interface {
+	Broadcast(wire.MsgType, []interface{})
+}
diff --git a/core/types/derive_sha.go b/core/types/derive_sha.go
new file mode 100644
index 000000000..1897ff198
--- /dev/null
+++ b/core/types/derive_sha.go
@@ -0,0 +1,20 @@
+package types
+
+import (
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/trie"
+)
+
+type DerivableList interface {
+	Len() int
+	GetRlp(i int) []byte
+}
+
+func DeriveSha(list DerivableList) []byte {
+	trie := trie.New(ethutil.Config.Db, "")
+	for i := 0; i < list.Len(); i++ {
+		trie.Update(string(ethutil.NewValue(i).Encode()), string(list.GetRlp(i)))
+	}
+
+	return trie.GetRoot()
+}
diff --git a/core/types/receipt.go b/core/types/receipt.go
new file mode 100644
index 000000000..bac64e41d
--- /dev/null
+++ b/core/types/receipt.go
@@ -0,0 +1,81 @@
+package types
+
+import (
+	"bytes"
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+)
+
+type Receipt struct {
+	PostState         []byte
+	CumulativeGasUsed *big.Int
+	Bloom             []byte
+	logs              state.Logs
+}
+
+func NewReceipt(root []byte, cumalativeGasUsed *big.Int) *Receipt {
+	return &Receipt{PostState: ethutil.CopyBytes(root), CumulativeGasUsed: cumalativeGasUsed}
+}
+
+func NewRecieptFromValue(val *ethutil.Value) *Receipt {
+	r := &Receipt{}
+	r.RlpValueDecode(val)
+
+	return r
+}
+
+func (self *Receipt) SetLogs(logs state.Logs) {
+	self.logs = logs
+}
+
+func (self *Receipt) RlpValueDecode(decoder *ethutil.Value) {
+	self.PostState = decoder.Get(0).Bytes()
+	self.CumulativeGasUsed = decoder.Get(1).BigInt()
+	self.Bloom = decoder.Get(2).Bytes()
+
+	it := decoder.Get(3).NewIterator()
+	for it.Next() {
+		self.logs = append(self.logs, state.NewLogFromValue(it.Value()))
+	}
+}
+
+func (self *Receipt) RlpData() interface{} {
+	return []interface{}{self.PostState, self.CumulativeGasUsed, self.Bloom, self.logs.RlpData()}
+}
+
+func (self *Receipt) RlpEncode() []byte {
+	return ethutil.Encode(self.RlpData())
+}
+
+func (self *Receipt) Cmp(other *Receipt) bool {
+	if bytes.Compare(self.PostState, other.PostState) != 0 {
+		return false
+	}
+
+	return true
+}
+
+func (self *Receipt) String() string {
+	return fmt.Sprintf("receipt{med=%x cgas=%v bloom=%x logs=%v}", self.PostState, self.CumulativeGasUsed, self.Bloom, self.logs)
+}
+
+type Receipts []*Receipt
+
+func (self Receipts) RlpData() interface{} {
+	data := make([]interface{}, len(self))
+	for i, receipt := range self {
+		data[i] = receipt.RlpData()
+	}
+
+	return data
+}
+
+func (self Receipts) RlpEncode() []byte {
+	return ethutil.Encode(self.RlpData())
+}
+
+func (self Receipts) Len() int            { return len(self) }
+func (self Receipts) GetRlp(i int) []byte { return ethutil.Rlp(self[i]) }
diff --git a/core/types/transaction.go b/core/types/transaction.go
new file mode 100644
index 000000000..f6ad0774b
--- /dev/null
+++ b/core/types/transaction.go
@@ -0,0 +1,224 @@
+package types
+
+import (
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/obscuren/secp256k1-go"
+)
+
+func IsContractAddr(addr []byte) bool {
+	return len(addr) == 0
+}
+
+type Transaction struct {
+	nonce     uint64
+	recipient []byte
+	value     *big.Int
+	gas       *big.Int
+	gasPrice  *big.Int
+	data      []byte
+	v         byte
+	r, s      []byte
+}
+
+func NewContractCreationTx(value, gas, gasPrice *big.Int, script []byte) *Transaction {
+	return &Transaction{recipient: nil, value: value, gas: gas, gasPrice: gasPrice, data: script}
+}
+
+func NewTransactionMessage(to []byte, value, gas, gasPrice *big.Int, data []byte) *Transaction {
+	return &Transaction{recipient: to, value: value, gasPrice: gasPrice, gas: gas, data: data}
+}
+
+func NewTransactionFromBytes(data []byte) *Transaction {
+	tx := &Transaction{}
+	tx.RlpDecode(data)
+
+	return tx
+}
+
+func NewTransactionFromValue(val *ethutil.Value) *Transaction {
+	tx := &Transaction{}
+	tx.RlpValueDecode(val)
+
+	return tx
+}
+
+func (tx *Transaction) Hash() []byte {
+	data := []interface{}{tx.nonce, tx.gasPrice, tx.gas, tx.recipient, tx.value, tx.data}
+
+	return crypto.Sha3(ethutil.NewValue(data).Encode())
+}
+
+func (self *Transaction) Data() []byte {
+	return self.data
+}
+
+func (self *Transaction) Gas() *big.Int {
+	return self.gas
+}
+
+func (self *Transaction) GasPrice() *big.Int {
+	return self.gasPrice
+}
+
+func (self *Transaction) Value() *big.Int {
+	return self.value
+}
+
+func (self *Transaction) Nonce() uint64 {
+	return self.nonce
+}
+
+func (self *Transaction) SetNonce(nonce uint64) {
+	self.nonce = nonce
+}
+
+func (self *Transaction) From() []byte {
+	return self.Sender()
+}
+
+func (self *Transaction) To() []byte {
+	return self.recipient
+}
+
+func (tx *Transaction) Curve() (v byte, r []byte, s []byte) {
+	v = tx.v
+	r = ethutil.LeftPadBytes(tx.r, 32)
+	s = ethutil.LeftPadBytes(tx.s, 32)
+
+	return
+}
+
+func (tx *Transaction) Signature(key []byte) []byte {
+	hash := tx.Hash()
+
+	sig, _ := secp256k1.Sign(hash, key)
+
+	return sig
+}
+
+func (tx *Transaction) PublicKey() []byte {
+	hash := tx.Hash()
+
+	v, r, s := tx.Curve()
+
+	sig := append(r, s...)
+	sig = append(sig, v-27)
+
+	//pubkey := crypto.Ecrecover(append(hash, sig...))
+	pubkey, _ := secp256k1.RecoverPubkey(hash, sig)
+
+	return pubkey
+}
+
+func (tx *Transaction) Sender() []byte {
+	pubkey := tx.PublicKey()
+
+	// Validate the returned key.
+	// Return nil if public key isn't in full format
+	if len(pubkey) != 0 && pubkey[0] != 4 {
+		return nil
+	}
+
+	return crypto.Sha3(pubkey[1:])[12:]
+}
+
+func (tx *Transaction) Sign(privk []byte) error {
+
+	sig := tx.Signature(privk)
+
+	tx.r = sig[:32]
+	tx.s = sig[32:64]
+	tx.v = sig[64] + 27
+
+	return nil
+}
+
+func (tx *Transaction) RlpData() interface{} {
+	data := []interface{}{tx.nonce, tx.gasPrice, tx.gas, tx.recipient, tx.value, tx.data}
+
+	return append(data, tx.v, new(big.Int).SetBytes(tx.r).Bytes(), new(big.Int).SetBytes(tx.s).Bytes())
+}
+
+func (tx *Transaction) RlpValue() *ethutil.Value {
+	return ethutil.NewValue(tx.RlpData())
+}
+
+func (tx *Transaction) RlpEncode() []byte {
+	return tx.RlpValue().Encode()
+}
+
+func (tx *Transaction) RlpDecode(data []byte) {
+	tx.RlpValueDecode(ethutil.NewValueFromBytes(data))
+}
+
+func (tx *Transaction) RlpValueDecode(decoder *ethutil.Value) {
+	tx.nonce = decoder.Get(0).Uint()
+	tx.gasPrice = decoder.Get(1).BigInt()
+	tx.gas = decoder.Get(2).BigInt()
+	tx.recipient = decoder.Get(3).Bytes()
+	tx.value = decoder.Get(4).BigInt()
+	tx.data = decoder.Get(5).Bytes()
+	tx.v = byte(decoder.Get(6).Uint())
+
+	tx.r = decoder.Get(7).Bytes()
+	tx.s = decoder.Get(8).Bytes()
+}
+
+func (tx *Transaction) String() string {
+	return fmt.Sprintf(`
+	TX(%x)
+	Contract: %v
+	From:     %x
+	To:       %x
+	Nonce:    %v
+	GasPrice: %v
+	Gas:      %v
+	Value:    %v
+	Data:     0x%x
+	V:        0x%x
+	R:        0x%x
+	S:        0x%x
+	Hex:      %x
+	`,
+		tx.Hash(),
+		len(tx.recipient) == 0,
+		tx.Sender(),
+		tx.recipient,
+		tx.nonce,
+		tx.gasPrice,
+		tx.gas,
+		tx.value,
+		tx.data,
+		tx.v,
+		tx.r,
+		tx.s,
+		ethutil.Encode(tx),
+	)
+}
+
+// Transaction slice type for basic sorting
+type Transactions []*Transaction
+
+func (self Transactions) RlpData() interface{} {
+	// Marshal the transactions of this block
+	enc := make([]interface{}, len(self))
+	for i, tx := range self {
+		// Cast it to a string (safe)
+		enc[i] = tx.RlpData()
+	}
+
+	return enc
+}
+func (s Transactions) Len() int            { return len(s) }
+func (s Transactions) Swap(i, j int)       { s[i], s[j] = s[j], s[i] }
+func (s Transactions) GetRlp(i int) []byte { return ethutil.Rlp(s[i]) }
+
+type TxByNonce struct{ Transactions }
+
+func (s TxByNonce) Less(i, j int) bool {
+	return s.Transactions[i].nonce < s.Transactions[j].nonce
+}
diff --git a/core/types/transaction_test.go b/core/types/transaction_test.go
new file mode 100644
index 000000000..ab1254f4c
--- /dev/null
+++ b/core/types/transaction_test.go
@@ -0,0 +1 @@
+package types
diff --git a/core/vm_env.go b/core/vm_env.go
new file mode 100644
index 000000000..ad63ecf9c
--- /dev/null
+++ b/core/vm_env.go
@@ -0,0 +1,61 @@
+package core
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/vm"
+)
+
+type VMEnv struct {
+	state *state.StateDB
+	block *types.Block
+	msg   Message
+	depth int
+}
+
+func NewEnv(state *state.StateDB, msg Message, block *types.Block) *VMEnv {
+	return &VMEnv{
+		state: state,
+		block: block,
+		msg:   msg,
+	}
+}
+
+func (self *VMEnv) Origin() []byte        { return self.msg.From() }
+func (self *VMEnv) BlockNumber() *big.Int { return self.block.Number }
+func (self *VMEnv) PrevHash() []byte      { return self.block.PrevHash }
+func (self *VMEnv) Coinbase() []byte      { return self.block.Coinbase }
+func (self *VMEnv) Time() int64           { return self.block.Time }
+func (self *VMEnv) Difficulty() *big.Int  { return self.block.Difficulty }
+func (self *VMEnv) BlockHash() []byte     { return self.block.Hash() }
+func (self *VMEnv) Value() *big.Int       { return self.msg.Value() }
+func (self *VMEnv) State() *state.StateDB { return self.state }
+func (self *VMEnv) GasLimit() *big.Int    { return self.block.GasLimit }
+func (self *VMEnv) Depth() int            { return self.depth }
+func (self *VMEnv) SetDepth(i int)        { self.depth = i }
+func (self *VMEnv) AddLog(log state.Log) {
+	self.state.AddLog(log)
+}
+func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
+	return vm.Transfer(from, to, amount)
+}
+
+func (self *VMEnv) vm(addr, data []byte, gas, price, value *big.Int) *Execution {
+	return NewExecution(self, addr, data, gas, price, value)
+}
+
+func (self *VMEnv) Call(me vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(addr, data, gas, price, value)
+	return exe.Call(addr, me)
+}
+func (self *VMEnv) CallCode(me vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(me.Address(), data, gas, price, value)
+	return exe.Call(addr, me)
+}
+
+func (self *VMEnv) Create(me vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ClosureRef) {
+	exe := self.vm(addr, data, gas, price, value)
+	return exe.Create(me)
+}
diff --git a/crypto/crypto.go b/crypto/crypto.go
new file mode 100644
index 000000000..b8fd78fa2
--- /dev/null
+++ b/crypto/crypto.go
@@ -0,0 +1,115 @@
+package crypto
+
+import (
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"crypto/sha256"
+
+	"code.google.com/p/go.crypto/ripemd160"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/obscuren/ecies"
+	"github.com/obscuren/secp256k1-go"
+	"github.com/obscuren/sha3"
+)
+
+func init() {
+	// specify the params for the s256 curve
+	ecies.AddParamsForCurve(S256(), ecies.ECIES_AES128_SHA256)
+}
+
+func Sha3(data []byte) []byte {
+	d := sha3.NewKeccak256()
+	d.Write(data)
+
+	return d.Sum(nil)
+}
+
+// Creates an ethereum address given the bytes and the nonce
+func CreateAddress(b []byte, nonce uint64) []byte {
+	return Sha3(ethutil.NewValue([]interface{}{b, nonce}).Encode())[12:]
+}
+
+func Sha256(data []byte) []byte {
+	hash := sha256.Sum256(data)
+
+	return hash[:]
+}
+
+func Ripemd160(data []byte) []byte {
+	ripemd := ripemd160.New()
+	ripemd.Write(data)
+
+	return ripemd.Sum(nil)
+}
+
+func Ecrecover(data []byte) []byte {
+	var in = struct {
+		hash []byte
+		sig  []byte
+	}{data[:32], data[32:]}
+
+	r, _ := secp256k1.RecoverPubkey(in.hash, in.sig)
+
+	return r
+}
+
+// New methods using proper ecdsa keys from the stdlib
+func ToECDSA(prv []byte) *ecdsa.PrivateKey {
+	if len(prv) == 0 {
+		return nil
+	}
+
+	priv := new(ecdsa.PrivateKey)
+	priv.PublicKey.Curve = S256()
+	priv.D = ethutil.BigD(prv)
+	priv.PublicKey.X, priv.PublicKey.Y = S256().ScalarBaseMult(prv)
+	return priv
+}
+
+func FromECDSA(prv *ecdsa.PrivateKey) []byte {
+	if prv == nil {
+		return nil
+	}
+	return prv.D.Bytes()
+}
+
+func ToECDSAPub(pub []byte) *ecdsa.PublicKey {
+	if len(pub) == 0 {
+		return nil
+	}
+	x, y := elliptic.Unmarshal(S256(), pub)
+	return &ecdsa.PublicKey{S256(), x, y}
+}
+
+func FromECDSAPub(pub *ecdsa.PublicKey) []byte {
+	if pub == nil {
+		return nil
+	}
+	return elliptic.Marshal(S256(), pub.X, pub.Y)
+}
+
+func GenerateKey() (*ecdsa.PrivateKey, error) {
+	return ecdsa.GenerateKey(S256(), rand.Reader)
+}
+
+func SigToPub(hash, sig []byte) *ecdsa.PublicKey {
+	s := Ecrecover(append(hash, sig...))
+	x, y := elliptic.Unmarshal(S256(), s)
+
+	return &ecdsa.PublicKey{S256(), x, y}
+}
+
+func Sign(hash []byte, prv *ecdsa.PrivateKey) (sig []byte, err error) {
+	sig, err = secp256k1.Sign(hash, prv.D.Bytes())
+	return
+}
+
+func Encrypt(pub *ecdsa.PublicKey, message []byte) ([]byte, error) {
+	return ecies.Encrypt(rand.Reader, ecies.ImportECDSAPublic(pub), message, nil, nil)
+}
+
+func Decrypt(prv *ecdsa.PrivateKey, ct []byte) ([]byte, error) {
+	key := ecies.ImportECDSA(prv)
+	return key.Decrypt(rand.Reader, ct, nil, nil)
+}
diff --git a/crypto/crypto_test.go b/crypto/crypto_test.go
new file mode 100644
index 000000000..af62a02a2
--- /dev/null
+++ b/crypto/crypto_test.go
@@ -0,0 +1,36 @@
+package crypto
+
+import (
+	"bytes"
+	"encoding/hex"
+	"testing"
+)
+
+// These tests are sanity checks.
+// They should ensure that we don't e.g. use Sha3-224 instead of Sha3-256
+// and that the sha3 library uses keccak-f permutation.
+
+func TestSha3(t *testing.T) {
+	msg := []byte("abc")
+	exp, _ := hex.DecodeString("4e03657aea45a94fc7d47ba826c8d667c0d1e6e33a64a036ec44f58fa12d6c45")
+	checkhash(t, "Sha3-256", Sha3, msg, exp)
+}
+
+func TestSha256(t *testing.T) {
+	msg := []byte("abc")
+	exp, _ := hex.DecodeString("ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad")
+	checkhash(t, "Sha256", Sha256, msg, exp)
+}
+
+func TestRipemd160(t *testing.T) {
+	msg := []byte("abc")
+	exp, _ := hex.DecodeString("8eb208f7e05d987a9b044a8e98c6b087f15a0bfc")
+	checkhash(t, "Ripemd160", Ripemd160, msg, exp)
+}
+
+func checkhash(t *testing.T, name string, f func([]byte) []byte, msg, exp []byte) {
+	sum := f(msg)
+	if bytes.Compare(exp, sum) != 0 {
+		t.Errorf("hash %s returned wrong result.\ngot:  %x\nwant: %x", name, sum, exp)
+	}
+}
diff --git a/crypto/curve.go b/crypto/curve.go
new file mode 100644
index 000000000..131a0dd2f
--- /dev/null
+++ b/crypto/curve.go
@@ -0,0 +1,363 @@
+package crypto
+
+// Copyright 2010 The Go Authors. All rights reserved.
+// Copyright 2011 ThePiachu. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package bitelliptic implements several Koblitz elliptic curves over prime
+// fields.
+
+// This package operates, internally, on Jacobian coordinates. For a given
+// (x, y) position on the curve, the Jacobian coordinates are (x1, y1, z1)
+// where x = x1/z1² and y = y1/z1³. The greatest speedups come when the whole
+// calculation can be performed within the transform (as in ScalarMult and
+// ScalarBaseMult). But even for Add and Double, it's faster to apply and
+// reverse the transform than to operate in affine coordinates.
+
+import (
+	"crypto/elliptic"
+	"io"
+	"math/big"
+	"sync"
+)
+
+// A BitCurve represents a Koblitz Curve with a=0.
+// See http://www.hyperelliptic.org/EFD/g1p/auto-shortw.html
+type BitCurve struct {
+	P       *big.Int // the order of the underlying field
+	N       *big.Int // the order of the base point
+	B       *big.Int // the constant of the BitCurve equation
+	Gx, Gy  *big.Int // (x,y) of the base point
+	BitSize int      // the size of the underlying field
+}
+
+func (BitCurve *BitCurve) Params() *elliptic.CurveParams {
+	return &elliptic.CurveParams{BitCurve.P, BitCurve.N, BitCurve.B, BitCurve.Gx, BitCurve.Gy, BitCurve.BitSize}
+}
+
+// IsOnBitCurve returns true if the given (x,y) lies on the BitCurve.
+func (BitCurve *BitCurve) IsOnCurve(x, y *big.Int) bool {
+	// y² = x³ + b
+	y2 := new(big.Int).Mul(y, y) //y²
+	y2.Mod(y2, BitCurve.P)       //y²%P
+
+	x3 := new(big.Int).Mul(x, x) //x²
+	x3.Mul(x3, x)                //x³
+
+	x3.Add(x3, BitCurve.B) //x³+B
+	x3.Mod(x3, BitCurve.P) //(x³+B)%P
+
+	return x3.Cmp(y2) == 0
+}
+
+//TODO: double check if the function is okay
+// affineFromJacobian reverses the Jacobian transform. See the comment at the
+// top of the file.
+func (BitCurve *BitCurve) affineFromJacobian(x, y, z *big.Int) (xOut, yOut *big.Int) {
+	zinv := new(big.Int).ModInverse(z, BitCurve.P)
+	zinvsq := new(big.Int).Mul(zinv, zinv)
+
+	xOut = new(big.Int).Mul(x, zinvsq)
+	xOut.Mod(xOut, BitCurve.P)
+	zinvsq.Mul(zinvsq, zinv)
+	yOut = new(big.Int).Mul(y, zinvsq)
+	yOut.Mod(yOut, BitCurve.P)
+	return
+}
+
+// Add returns the sum of (x1,y1) and (x2,y2)
+func (BitCurve *BitCurve) Add(x1, y1, x2, y2 *big.Int) (*big.Int, *big.Int) {
+	z := new(big.Int).SetInt64(1)
+	return BitCurve.affineFromJacobian(BitCurve.addJacobian(x1, y1, z, x2, y2, z))
+}
+
+// addJacobian takes two points in Jacobian coordinates, (x1, y1, z1) and
+// (x2, y2, z2) and returns their sum, also in Jacobian form.
+func (BitCurve *BitCurve) addJacobian(x1, y1, z1, x2, y2, z2 *big.Int) (*big.Int, *big.Int, *big.Int) {
+	// See http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#addition-add-2007-bl
+	z1z1 := new(big.Int).Mul(z1, z1)
+	z1z1.Mod(z1z1, BitCurve.P)
+	z2z2 := new(big.Int).Mul(z2, z2)
+	z2z2.Mod(z2z2, BitCurve.P)
+
+	u1 := new(big.Int).Mul(x1, z2z2)
+	u1.Mod(u1, BitCurve.P)
+	u2 := new(big.Int).Mul(x2, z1z1)
+	u2.Mod(u2, BitCurve.P)
+	h := new(big.Int).Sub(u2, u1)
+	if h.Sign() == -1 {
+		h.Add(h, BitCurve.P)
+	}
+	i := new(big.Int).Lsh(h, 1)
+	i.Mul(i, i)
+	j := new(big.Int).Mul(h, i)
+
+	s1 := new(big.Int).Mul(y1, z2)
+	s1.Mul(s1, z2z2)
+	s1.Mod(s1, BitCurve.P)
+	s2 := new(big.Int).Mul(y2, z1)
+	s2.Mul(s2, z1z1)
+	s2.Mod(s2, BitCurve.P)
+	r := new(big.Int).Sub(s2, s1)
+	if r.Sign() == -1 {
+		r.Add(r, BitCurve.P)
+	}
+	r.Lsh(r, 1)
+	v := new(big.Int).Mul(u1, i)
+
+	x3 := new(big.Int).Set(r)
+	x3.Mul(x3, x3)
+	x3.Sub(x3, j)
+	x3.Sub(x3, v)
+	x3.Sub(x3, v)
+	x3.Mod(x3, BitCurve.P)
+
+	y3 := new(big.Int).Set(r)
+	v.Sub(v, x3)
+	y3.Mul(y3, v)
+	s1.Mul(s1, j)
+	s1.Lsh(s1, 1)
+	y3.Sub(y3, s1)
+	y3.Mod(y3, BitCurve.P)
+
+	z3 := new(big.Int).Add(z1, z2)
+	z3.Mul(z3, z3)
+	z3.Sub(z3, z1z1)
+	if z3.Sign() == -1 {
+		z3.Add(z3, BitCurve.P)
+	}
+	z3.Sub(z3, z2z2)
+	if z3.Sign() == -1 {
+		z3.Add(z3, BitCurve.P)
+	}
+	z3.Mul(z3, h)
+	z3.Mod(z3, BitCurve.P)
+
+	return x3, y3, z3
+}
+
+// Double returns 2*(x,y)
+func (BitCurve *BitCurve) Double(x1, y1 *big.Int) (*big.Int, *big.Int) {
+	z1 := new(big.Int).SetInt64(1)
+	return BitCurve.affineFromJacobian(BitCurve.doubleJacobian(x1, y1, z1))
+}
+
+// doubleJacobian takes a point in Jacobian coordinates, (x, y, z), and
+// returns its double, also in Jacobian form.
+func (BitCurve *BitCurve) doubleJacobian(x, y, z *big.Int) (*big.Int, *big.Int, *big.Int) {
+	// See http://hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#doubling-dbl-2009-l
+
+	a := new(big.Int).Mul(x, x) //X1²
+	b := new(big.Int).Mul(y, y) //Y1²
+	c := new(big.Int).Mul(b, b) //B²
+
+	d := new(big.Int).Add(x, b) //X1+B
+	d.Mul(d, d)                 //(X1+B)²
+	d.Sub(d, a)                 //(X1+B)²-A
+	d.Sub(d, c)                 //(X1+B)²-A-C
+	d.Mul(d, big.NewInt(2))     //2*((X1+B)²-A-C)
+
+	e := new(big.Int).Mul(big.NewInt(3), a) //3*A
+	f := new(big.Int).Mul(e, e)             //E²
+
+	x3 := new(big.Int).Mul(big.NewInt(2), d) //2*D
+	x3.Sub(f, x3)                            //F-2*D
+	x3.Mod(x3, BitCurve.P)
+
+	y3 := new(big.Int).Sub(d, x3)                  //D-X3
+	y3.Mul(e, y3)                                  //E*(D-X3)
+	y3.Sub(y3, new(big.Int).Mul(big.NewInt(8), c)) //E*(D-X3)-8*C
+	y3.Mod(y3, BitCurve.P)
+
+	z3 := new(big.Int).Mul(y, z) //Y1*Z1
+	z3.Mul(big.NewInt(2), z3)    //3*Y1*Z1
+	z3.Mod(z3, BitCurve.P)
+
+	return x3, y3, z3
+}
+
+//TODO: double check if it is okay
+// ScalarMult returns k*(Bx,By) where k is a number in big-endian form.
+func (BitCurve *BitCurve) ScalarMult(Bx, By *big.Int, k []byte) (*big.Int, *big.Int) {
+	// We have a slight problem in that the identity of the group (the
+	// point at infinity) cannot be represented in (x, y) form on a finite
+	// machine. Thus the standard add/double algorithm has to be tweaked
+	// slightly: our initial state is not the identity, but x, and we
+	// ignore the first true bit in |k|.  If we don't find any true bits in
+	// |k|, then we return nil, nil, because we cannot return the identity
+	// element.
+
+	Bz := new(big.Int).SetInt64(1)
+	x := Bx
+	y := By
+	z := Bz
+
+	seenFirstTrue := false
+	for _, byte := range k {
+		for bitNum := 0; bitNum < 8; bitNum++ {
+			if seenFirstTrue {
+				x, y, z = BitCurve.doubleJacobian(x, y, z)
+			}
+			if byte&0x80 == 0x80 {
+				if !seenFirstTrue {
+					seenFirstTrue = true
+				} else {
+					x, y, z = BitCurve.addJacobian(Bx, By, Bz, x, y, z)
+				}
+			}
+			byte <<= 1
+		}
+	}
+
+	if !seenFirstTrue {
+		return nil, nil
+	}
+
+	return BitCurve.affineFromJacobian(x, y, z)
+}
+
+// ScalarBaseMult returns k*G, where G is the base point of the group and k is
+// an integer in big-endian form.
+func (BitCurve *BitCurve) ScalarBaseMult(k []byte) (*big.Int, *big.Int) {
+	return BitCurve.ScalarMult(BitCurve.Gx, BitCurve.Gy, k)
+}
+
+var mask = []byte{0xff, 0x1, 0x3, 0x7, 0xf, 0x1f, 0x3f, 0x7f}
+
+//TODO: double check if it is okay
+// GenerateKey returns a public/private key pair. The private key is generated
+// using the given reader, which must return random data.
+func (BitCurve *BitCurve) GenerateKey(rand io.Reader) (priv []byte, x, y *big.Int, err error) {
+	byteLen := (BitCurve.BitSize + 7) >> 3
+	priv = make([]byte, byteLen)
+
+	for x == nil {
+		_, err = io.ReadFull(rand, priv)
+		if err != nil {
+			return
+		}
+		// We have to mask off any excess bits in the case that the size of the
+		// underlying field is not a whole number of bytes.
+		priv[0] &= mask[BitCurve.BitSize%8]
+		// This is because, in tests, rand will return all zeros and we don't
+		// want to get the point at infinity and loop forever.
+		priv[1] ^= 0x42
+		x, y = BitCurve.ScalarBaseMult(priv)
+	}
+	return
+}
+
+// Marshal converts a point into the form specified in section 4.3.6 of ANSI
+// X9.62.
+func (BitCurve *BitCurve) Marshal(x, y *big.Int) []byte {
+	byteLen := (BitCurve.BitSize + 7) >> 3
+
+	ret := make([]byte, 1+2*byteLen)
+	ret[0] = 4 // uncompressed point
+
+	xBytes := x.Bytes()
+	copy(ret[1+byteLen-len(xBytes):], xBytes)
+	yBytes := y.Bytes()
+	copy(ret[1+2*byteLen-len(yBytes):], yBytes)
+	return ret
+}
+
+// Unmarshal converts a point, serialised by Marshal, into an x, y pair. On
+// error, x = nil.
+func (BitCurve *BitCurve) Unmarshal(data []byte) (x, y *big.Int) {
+	byteLen := (BitCurve.BitSize + 7) >> 3
+	if len(data) != 1+2*byteLen {
+		return
+	}
+	if data[0] != 4 { // uncompressed form
+		return
+	}
+	x = new(big.Int).SetBytes(data[1 : 1+byteLen])
+	y = new(big.Int).SetBytes(data[1+byteLen:])
+	return
+}
+
+//curve parameters taken from:
+//http://www.secg.org/collateral/sec2_final.pdf
+
+var initonce sync.Once
+var ecp160k1 *BitCurve
+var ecp192k1 *BitCurve
+var ecp224k1 *BitCurve
+var ecp256k1 *BitCurve
+
+func initAll() {
+	initS160()
+	initS192()
+	initS224()
+	initS256()
+}
+
+func initS160() {
+	// See SEC 2 section 2.4.1
+	ecp160k1 = new(BitCurve)
+	ecp160k1.P, _ = new(big.Int).SetString("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFAC73", 16)
+	ecp160k1.N, _ = new(big.Int).SetString("0100000000000000000001B8FA16DFAB9ACA16B6B3", 16)
+	ecp160k1.B, _ = new(big.Int).SetString("0000000000000000000000000000000000000007", 16)
+	ecp160k1.Gx, _ = new(big.Int).SetString("3B4C382CE37AA192A4019E763036F4F5DD4D7EBB", 16)
+	ecp160k1.Gy, _ = new(big.Int).SetString("938CF935318FDCED6BC28286531733C3F03C4FEE", 16)
+	ecp160k1.BitSize = 160
+}
+
+func initS192() {
+	// See SEC 2 section 2.5.1
+	ecp192k1 = new(BitCurve)
+	ecp192k1.P, _ = new(big.Int).SetString("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFEE37", 16)
+	ecp192k1.N, _ = new(big.Int).SetString("FFFFFFFFFFFFFFFFFFFFFFFE26F2FC170F69466A74DEFD8D", 16)
+	ecp192k1.B, _ = new(big.Int).SetString("000000000000000000000000000000000000000000000003", 16)
+	ecp192k1.Gx, _ = new(big.Int).SetString("DB4FF10EC057E9AE26B07D0280B7F4341DA5D1B1EAE06C7D", 16)
+	ecp192k1.Gy, _ = new(big.Int).SetString("9B2F2F6D9C5628A7844163D015BE86344082AA88D95E2F9D", 16)
+	ecp192k1.BitSize = 192
+}
+
+func initS224() {
+	// See SEC 2 section 2.6.1
+	ecp224k1 = new(BitCurve)
+	ecp224k1.P, _ = new(big.Int).SetString("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFE56D", 16)
+	ecp224k1.N, _ = new(big.Int).SetString("010000000000000000000000000001DCE8D2EC6184CAF0A971769FB1F7", 16)
+	ecp224k1.B, _ = new(big.Int).SetString("00000000000000000000000000000000000000000000000000000005", 16)
+	ecp224k1.Gx, _ = new(big.Int).SetString("A1455B334DF099DF30FC28A169A467E9E47075A90F7E650EB6B7A45C", 16)
+	ecp224k1.Gy, _ = new(big.Int).SetString("7E089FED7FBA344282CAFBD6F7E319F7C0B0BD59E2CA4BDB556D61A5", 16)
+	ecp224k1.BitSize = 224
+}
+
+func initS256() {
+	// See SEC 2 section 2.7.1
+	ecp256k1 = new(BitCurve)
+	ecp256k1.P, _ = new(big.Int).SetString("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F", 16)
+	ecp256k1.N, _ = new(big.Int).SetString("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141", 16)
+	ecp256k1.B, _ = new(big.Int).SetString("0000000000000000000000000000000000000000000000000000000000000007", 16)
+	ecp256k1.Gx, _ = new(big.Int).SetString("79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798", 16)
+	ecp256k1.Gy, _ = new(big.Int).SetString("483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8", 16)
+	ecp256k1.BitSize = 256
+}
+
+// S160 returns a BitCurve which implements secp160k1 (see SEC 2 section 2.4.1)
+func S160() *BitCurve {
+	initonce.Do(initAll)
+	return ecp160k1
+}
+
+// S192 returns a BitCurve which implements secp192k1 (see SEC 2 section 2.5.1)
+func S192() *BitCurve {
+	initonce.Do(initAll)
+	return ecp192k1
+}
+
+// S224 returns a BitCurve which implements secp224k1 (see SEC 2 section 2.6.1)
+func S224() *BitCurve {
+	initonce.Do(initAll)
+	return ecp224k1
+}
+
+// S256 returns a BitCurve which implements secp256k1 (see SEC 2 section 2.7.1)
+func S256() *BitCurve {
+	initonce.Do(initAll)
+	return ecp256k1
+}
diff --git a/crypto/encrypt_decrypt_test.go b/crypto/encrypt_decrypt_test.go
new file mode 100644
index 000000000..85b43c406
--- /dev/null
+++ b/crypto/encrypt_decrypt_test.go
@@ -0,0 +1,40 @@
+package crypto
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+func TestBox(t *testing.T) {
+	prv1 := ToECDSA(ethutil.Hex2Bytes("4b50fa71f5c3eeb8fdc452224b2395af2fcc3d125e06c32c82e048c0559db03f"))
+	prv2 := ToECDSA(ethutil.Hex2Bytes("d0b043b4c5d657670778242d82d68a29d25d7d711127d17b8e299f156dad361a"))
+	pub2 := ToECDSAPub(ethutil.Hex2Bytes("04bd27a63c91fe3233c5777e6d3d7b39204d398c8f92655947eb5a373d46e1688f022a1632d264725cbc7dc43ee1cfebde42fa0a86d08b55d2acfbb5e9b3b48dc5"))
+
+	message := []byte("Hello, world.")
+	ct, err := Encrypt(pub2, message)
+	if err != nil {
+		fmt.Println(err.Error())
+		t.FailNow()
+	}
+
+	pt, err := Decrypt(prv2, ct)
+	if err != nil {
+		fmt.Println(err.Error())
+		t.FailNow()
+	}
+
+	if !bytes.Equal(pt, message) {
+		fmt.Println("ecies: plaintext doesn't match message")
+		t.FailNow()
+	}
+
+	_, err = Decrypt(prv1, pt)
+	if err == nil {
+		fmt.Println("ecies: encryption should not have succeeded")
+		t.FailNow()
+	}
+
+}
diff --git a/crypto/key_manager.go b/crypto/key_manager.go
new file mode 100644
index 000000000..326e559e0
--- /dev/null
+++ b/crypto/key_manager.go
@@ -0,0 +1,134 @@
+package crypto
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+)
+
+var keylogger = logger.NewLogger("KEY")
+
+type KeyManager struct {
+	keyRing  *KeyRing
+	session  string
+	keyStore KeyStore            // interface
+	keyRings map[string]*KeyRing // cache
+	keyPair  *KeyPair
+}
+
+func NewDBKeyManager(db ethutil.Database) *KeyManager {
+	return &KeyManager{keyStore: &DBKeyStore{db: db}, keyRings: make(map[string]*KeyRing)}
+}
+
+func NewFileKeyManager(basedir string) *KeyManager {
+	return &KeyManager{keyStore: &FileKeyStore{basedir: basedir}, keyRings: make(map[string]*KeyRing)}
+}
+
+func (k *KeyManager) KeyPair() *KeyPair {
+	return k.keyPair
+}
+
+func (k *KeyManager) KeyRing() *KeyPair {
+	return k.keyPair
+}
+
+func (k *KeyManager) PrivateKey() []byte {
+	return k.keyPair.PrivateKey
+}
+
+func (k *KeyManager) PublicKey() []byte {
+	return k.keyPair.PublicKey
+}
+
+func (k *KeyManager) Address() []byte {
+	return k.keyPair.Address()
+}
+
+func (k *KeyManager) save(session string, keyRing *KeyRing) error {
+	err := k.keyStore.Save(session, keyRing)
+	if err != nil {
+		return err
+	}
+	k.keyRings[session] = keyRing
+	return nil
+}
+
+func (k *KeyManager) load(session string) (*KeyRing, error) {
+	keyRing, found := k.keyRings[session]
+	if !found {
+		var err error
+		keyRing, err = k.keyStore.Load(session)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return keyRing, nil
+}
+
+func cursorError(cursor int, len int) error {
+	return fmt.Errorf("cursor %d out of range (0..%d)", cursor, len)
+}
+
+func (k *KeyManager) reset(session string, cursor int, keyRing *KeyRing) error {
+	if cursor >= keyRing.Len() {
+		return cursorError(cursor, keyRing.Len())
+	}
+	lock := &sync.Mutex{}
+	lock.Lock()
+	defer lock.Unlock()
+	err := k.save(session, keyRing)
+	if err != nil {
+		return err
+	}
+	k.session = session
+	k.keyRing = keyRing
+	k.keyPair = keyRing.GetKeyPair(cursor)
+	return nil
+}
+
+func (k *KeyManager) SetCursor(cursor int) error {
+	if cursor >= k.keyRing.Len() {
+		return cursorError(cursor, k.keyRing.Len())
+	}
+	k.keyPair = k.keyRing.GetKeyPair(cursor)
+	return nil
+}
+
+func (k *KeyManager) Init(session string, cursor int, force bool) error {
+	var keyRing *KeyRing
+	if !force {
+		var err error
+		keyRing, err = k.load(session)
+		if err != nil {
+			return err
+		}
+	}
+	if keyRing == nil {
+		keyRing = NewGeneratedKeyRing(1)
+		keylogger.Infof("Created keypair. Private key: %x\n", keyRing.keys[0].PrivateKey)
+	}
+	return k.reset(session, cursor, keyRing)
+}
+
+func (k *KeyManager) InitFromSecretsFile(session string, cursor int, secretsfile string) error {
+	keyRing, err := NewKeyRingFromFile(secretsfile)
+	if err != nil {
+		return err
+	}
+	return k.reset(session, cursor, keyRing)
+}
+
+func (k *KeyManager) InitFromString(session string, cursor int, secrets string) error {
+	keyRing, err := NewKeyRingFromString(secrets)
+	if err != nil {
+		return err
+	}
+	return k.reset(session, cursor, keyRing)
+}
+
+func (k *KeyManager) Export(dir string) error {
+	fileKeyStore := FileKeyStore{dir}
+	return fileKeyStore.Save(k.session, k.keyRing)
+}
diff --git a/crypto/key_store.go b/crypto/key_store.go
new file mode 100644
index 000000000..04560a04e
--- /dev/null
+++ b/crypto/key_store.go
@@ -0,0 +1,113 @@
+package crypto
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+type KeyStore interface {
+	Load(string) (*KeyRing, error)
+	Save(string, *KeyRing) error
+}
+
+type DBKeyStore struct {
+	db ethutil.Database
+}
+
+const dbKeyPrefix = "KeyRing"
+
+func (k *DBKeyStore) dbKey(session string) []byte {
+	return []byte(fmt.Sprintf("%s%s", dbKeyPrefix, session))
+}
+
+func (k *DBKeyStore) Save(session string, keyRing *KeyRing) error {
+	k.db.Put(k.dbKey(session), keyRing.RlpEncode())
+	return nil
+}
+
+func (k *DBKeyStore) Load(session string) (*KeyRing, error) {
+	data, err := k.db.Get(k.dbKey(session))
+	if err != nil {
+		return nil, nil
+	}
+	var keyRing *KeyRing
+	keyRing, err = NewKeyRingFromBytes(data)
+	if err != nil {
+		return nil, err
+	}
+	// if empty keyRing is found we return nil, no error
+	if keyRing.Len() == 0 {
+		return nil, nil
+	}
+	return keyRing, nil
+}
+
+type FileKeyStore struct {
+	basedir string
+}
+
+func (k *FileKeyStore) Save(session string, keyRing *KeyRing) error {
+	var content []byte
+	var err error
+	var privateKeys []string
+	var publicKeys []string
+	var mnemonics []string
+	var addresses []string
+	keyRing.Each(func(keyPair *KeyPair) {
+		privateKeys = append(privateKeys, ethutil.Bytes2Hex(keyPair.PrivateKey))
+		publicKeys = append(publicKeys, ethutil.Bytes2Hex(keyPair.PublicKey))
+		addresses = append(addresses, ethutil.Bytes2Hex(keyPair.Address()))
+		mnemonics = append(mnemonics, keyPair.Mnemonic())
+	})
+
+	basename := session
+	if session == "" {
+		basename = "default"
+	}
+
+	path := path.Join(k.basedir, basename)
+	content = []byte(strings.Join(privateKeys, "\n"))
+	err = ioutil.WriteFile(path+".prv", content, 0600)
+	if err != nil {
+		return err
+	}
+
+	content = []byte(strings.Join(publicKeys, "\n"))
+	err = ioutil.WriteFile(path+".pub", content, 0644)
+	if err != nil {
+		return err
+	}
+
+	content = []byte(strings.Join(addresses, "\n"))
+	err = ioutil.WriteFile(path+".addr", content, 0644)
+	if err != nil {
+		return err
+	}
+
+	content = []byte(strings.Join(mnemonics, "\n"))
+	err = ioutil.WriteFile(path+".mne", content, 0600)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (k *FileKeyStore) Load(session string) (*KeyRing, error) {
+	basename := session
+	if session == "" {
+		basename = "default"
+	}
+	secfile := path.Join(k.basedir, basename+".prv")
+	_, err := os.Stat(secfile)
+	// if file is not found then we return nil, no error
+	if err != nil {
+		return nil, nil
+	}
+	return NewKeyRingFromFile(secfile)
+}
diff --git a/crypto/keypair.go b/crypto/keypair.go
new file mode 100644
index 000000000..d02875ded
--- /dev/null
+++ b/crypto/keypair.go
@@ -0,0 +1,58 @@
+package crypto
+
+import (
+	"strings"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/obscuren/secp256k1-go"
+)
+
+type KeyPair struct {
+	PrivateKey []byte
+	PublicKey  []byte
+	address    []byte
+	mnemonic   string
+	// The associated account
+	// account *StateObject
+}
+
+func GenerateNewKeyPair() *KeyPair {
+	_, prv := secp256k1.GenerateKeyPair()
+	keyPair, _ := NewKeyPairFromSec(prv) // swallow error, this one cannot err
+	return keyPair
+}
+
+func NewKeyPairFromSec(seckey []byte) (*KeyPair, error) {
+	pubkey, err := secp256k1.GeneratePubKey(seckey)
+	if err != nil {
+		return nil, err
+	}
+
+	return &KeyPair{PrivateKey: seckey, PublicKey: pubkey}, nil
+}
+
+func (k *KeyPair) Address() []byte {
+	if k.address == nil {
+		k.address = Sha3(k.PublicKey[1:])[12:]
+	}
+	return k.address
+}
+
+func (k *KeyPair) Mnemonic() string {
+	if k.mnemonic == "" {
+		k.mnemonic = strings.Join(MnemonicEncode(ethutil.Bytes2Hex(k.PrivateKey)), " ")
+	}
+	return k.mnemonic
+}
+
+func (k *KeyPair) AsStrings() (string, string, string, string) {
+	return k.Mnemonic(), ethutil.Bytes2Hex(k.Address()), ethutil.Bytes2Hex(k.PrivateKey), ethutil.Bytes2Hex(k.PublicKey)
+}
+
+func (k *KeyPair) RlpEncode() []byte {
+	return k.RlpValue().Encode()
+}
+
+func (k *KeyPair) RlpValue() *ethutil.Value {
+	return ethutil.NewValue(k.PrivateKey)
+}
diff --git a/crypto/keyring.go b/crypto/keyring.go
new file mode 100644
index 000000000..eab13dbc4
--- /dev/null
+++ b/crypto/keyring.go
@@ -0,0 +1,123 @@
+package crypto
+
+import (
+	"fmt"
+	"io/ioutil"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+type KeyRing struct {
+	keys []*KeyPair
+}
+
+func NewKeyRing() *KeyRing {
+	return &KeyRing{}
+}
+
+func (k *KeyRing) AddKeyPair(keyPair *KeyPair) {
+	k.keys = append(k.keys, keyPair)
+}
+
+func (k *KeyRing) GetKeyPair(i int) *KeyPair {
+	if len(k.keys) > i {
+		return k.keys[i]
+	}
+
+	return nil
+}
+
+func (k *KeyRing) Empty() bool {
+	return k.Len() == 0
+}
+
+func (k *KeyRing) Len() int {
+	return len(k.keys)
+}
+
+func (k *KeyRing) Each(f func(*KeyPair)) {
+	for _, keyPair := range k.keys {
+		f(keyPair)
+	}
+}
+
+func NewGeneratedKeyRing(len int) *KeyRing {
+	keyRing := NewKeyRing()
+	for i := 0; i < len; i++ {
+		keyRing.AddKeyPair(GenerateNewKeyPair())
+	}
+	return keyRing
+}
+
+func NewKeyRingFromFile(secfile string) (*KeyRing, error) {
+	var content []byte
+	var err error
+	content, err = ioutil.ReadFile(secfile)
+	if err != nil {
+		return nil, err
+	}
+	keyRing, err := NewKeyRingFromString(string(content))
+	if err != nil {
+		return nil, err
+	}
+	return keyRing, nil
+}
+
+func NewKeyRingFromString(content string) (*KeyRing, error) {
+	secretStrings := strings.Split(content, "\n")
+	var secrets [][]byte
+	for _, secretString := range secretStrings {
+		secret := secretString
+		words := strings.Split(secretString, " ")
+		if len(words) == 24 {
+			secret = MnemonicDecode(words)
+		} else if len(words) != 1 {
+			return nil, fmt.Errorf("Unrecognised key format")
+		}
+
+		if len(secret) != 0 {
+			secrets = append(secrets, ethutil.Hex2Bytes(secret))
+		}
+	}
+
+	return NewKeyRingFromSecrets(secrets)
+}
+
+func NewKeyRingFromSecrets(secs [][]byte) (*KeyRing, error) {
+	keyRing := NewKeyRing()
+	for _, sec := range secs {
+		keyPair, err := NewKeyPairFromSec(sec)
+		if err != nil {
+			return nil, err
+		}
+		keyRing.AddKeyPair(keyPair)
+	}
+	return keyRing, nil
+}
+
+func NewKeyRingFromBytes(data []byte) (*KeyRing, error) {
+	var secrets [][]byte
+	it := ethutil.NewValueFromBytes(data).NewIterator()
+	for it.Next() {
+		secret := it.Value().Bytes()
+		secrets = append(secrets, secret)
+	}
+	keyRing, err := NewKeyRingFromSecrets(secrets)
+	if err != nil {
+		return nil, err
+	}
+	return keyRing, nil
+}
+
+func (k *KeyRing) RlpEncode() []byte {
+	return k.RlpValue().Encode()
+}
+
+func (k *KeyRing) RlpValue() *ethutil.Value {
+	v := ethutil.EmptyValue()
+	k.Each(func(keyPair *KeyPair) {
+		v.Append(keyPair.RlpValue())
+	})
+	return v
+}
diff --git a/crypto/keys_test.go b/crypto/keys_test.go
new file mode 100644
index 000000000..56e851969
--- /dev/null
+++ b/crypto/keys_test.go
@@ -0,0 +1,122 @@
+package crypto
+
+// import (
+// 	"github.com/ethereum/go-ethereum/ethdb"
+// 	// "io/ioutil"
+// 	"fmt"
+// 	"os"
+// 	"path"
+// 	"testing"
+// )
+
+// // test if persistence layer works
+// func TestDBKeyManager(t *testing.T) {
+// 	memdb, _ := ethdb.NewMemDatabase()
+// 	keyManager0 := NewDBKeyManager(memdb)
+// 	err := keyManager0.Init("", 0, false)
+// 	if err != nil {
+// 		t.Error("Unexpected error: ", err)
+// 	}
+// 	keyManager1 := NewDBKeyManager(memdb)
+// 	err = keyManager1.Init("", 0, false)
+// 	if err != nil {
+// 		t.Error("Unexpected error: ", err)
+// 	}
+// 	if string(keyManager0.PrivateKey()) != string(keyManager1.PrivateKey()) {
+// 		t.Error("Expected private keys %x, %x, to be identical via db persistence", keyManager0.PrivateKey(), keyManager1.PrivateKey())
+// 	}
+// 	err = keyManager1.Init("", 0, true)
+// 	if err != nil {
+// 		t.Error("Unexpected error: ", err)
+// 	}
+// 	if string(keyManager0.PrivateKey()) == string(keyManager1.PrivateKey()) {
+// 		t.Error("Expected private keys %x, %x, to be be different despite db persistence if force generate", keyManager0.PrivateKey(), keyManager1.PrivateKey())
+// 	}
+// }
+
+// func TestFileKeyManager(t *testing.T) {
+// 	basedir0 := "/tmp/ethtest0"
+// 	os.RemoveAll(basedir0)
+// 	os.Mkdir(basedir0, 0777)
+
+// 	keyManager0 := NewFileKeyManager(basedir0)
+// 	err := keyManager0.Init("", 0, false)
+// 	if err != nil {
+// 		t.Error("Unexpected error: ", err)
+// 	}
+
+// 	keyManager1 := NewFileKeyManager(basedir0)
+
+// 	err = keyManager1.Init("", 0, false)
+// 	if err != nil {
+// 		t.Error("Unexpected error: ", err)
+// 	}
+// 	if string(keyManager0.PrivateKey()) != string(keyManager1.PrivateKey()) {
+// 		t.Error("Expected private keys %x, %x, to be identical via db persistence", keyManager0.PrivateKey(), keyManager1.PrivateKey())
+// 	}
+
+// 	err = keyManager1.Init("", 0, true)
+// 	if err != nil {
+// 		t.Error("Unexpected error: ", err)
+// 	}
+// 	if string(keyManager0.PrivateKey()) == string(keyManager1.PrivateKey()) {
+// 		t.Error("Expected private keys %x, %x, to be be different despite db persistence if force generate", keyManager0.PrivateKey(), keyManager1.PrivateKey())
+// 	}
+// }
+
+// // cursor errors
+// func TestCursorErrors(t *testing.T) {
+// 	memdb, _ := ethdb.NewMemDatabase()
+// 	keyManager0 := NewDBKeyManager(memdb)
+// 	err := keyManager0.Init("", 0, false)
+// 	err = keyManager0.Init("", 1, false)
+// 	if err == nil {
+// 		t.Error("Expected cursor error")
+// 	}
+// 	err = keyManager0.SetCursor(1)
+// 	if err == nil {
+// 		t.Error("Expected cursor error")
+// 	}
+// }
+
+// func TestExportImport(t *testing.T) {
+// 	memdb, _ := ethdb.NewMemDatabase()
+// 	keyManager0 := NewDBKeyManager(memdb)
+// 	err := keyManager0.Init("", 0, false)
+// 	basedir0 := "/tmp/ethtest0"
+// 	os.RemoveAll(basedir0)
+// 	os.Mkdir(basedir0, 0777)
+// 	keyManager0.Export(basedir0)
+
+// 	keyManager1 := NewFileKeyManager(basedir0)
+// 	err = keyManager1.Init("", 0, false)
+// 	if err != nil {
+// 		t.Error("Unexpected error: ", err)
+// 	}
+// 	fmt.Printf("keyRing: %v\n", keyManager0.KeyPair())
+// 	fmt.Printf("keyRing: %v\n", keyManager1.KeyPair())
+// 	if string(keyManager0.PrivateKey()) != string(keyManager1.PrivateKey()) {
+// 		t.Error("Expected private keys %x, %x, to be identical via export to filestore basedir", keyManager0.PrivateKey(), keyManager1.PrivateKey())
+// 	}
+// 	path.Join("")
+
+// 	// memdb, _ = ethdb.NewMemDatabase()
+// 	// keyManager2 := NewDBKeyManager(memdb)
+// 	// err = keyManager2.InitFromSecretsFile("", 0, path.Join(basedir0, "default.prv"))
+// 	// if err != nil {
+// 	// 	t.Error("Unexpected error: ", err)
+// 	// }
+// 	// if string(keyManager0.PrivateKey()) != string(keyManager2.PrivateKey()) {
+// 	// 	t.Error("Expected private keys %s, %s, to be identical via export/import prv", keyManager0.PrivateKey(), keyManager1.PrivateKey())
+// 	// }
+
+// 	// memdb, _ = ethdb.NewMemDatabase()
+// 	// keyManager3 := NewDBKeyManager(memdb)
+// 	// err = keyManager3.InitFromSecretsFile("", 0, path.Join(basedir0, "default.mne"))
+// 	// if err != nil {
+// 	// 	t.Error("Unexpected error: ", err)
+// 	// }
+// 	// if string(keyManager0.PrivateKey()) != string(keyManager3.PrivateKey()) {
+// 	// 	t.Error("Expected private keys %s, %s, to be identical via export/import mnemonic file", keyManager0.PrivateKey(), keyManager1.PrivateKey())
+// 	// }
+// }
diff --git a/crypto/mnemonic.go b/crypto/mnemonic.go
new file mode 100644
index 000000000..0d690f245
--- /dev/null
+++ b/crypto/mnemonic.go
@@ -0,0 +1,60 @@
+package crypto
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// TODO: See if we can refactor this into a shared util lib if we need it multiple times
+func IndexOf(slice []string, value string) int64 {
+	for p, v := range slice {
+		if v == value {
+			return int64(p)
+		}
+	}
+	return -1
+}
+
+func MnemonicEncode(message string) []string {
+	var out []string
+	n := int64(len(MnemonicWords))
+
+	for i := 0; i < len(message); i += (len(message) / 8) {
+		x := message[i : i+8]
+		bit, _ := strconv.ParseInt(x, 16, 64)
+		w1 := (bit % n)
+		w2 := ((bit / n) + w1) % n
+		w3 := ((bit / n / n) + w2) % n
+		out = append(out, MnemonicWords[w1], MnemonicWords[w2], MnemonicWords[w3])
+	}
+	return out
+}
+
+func MnemonicDecode(wordsar []string) string {
+	var out string
+	n := int64(len(MnemonicWords))
+
+	for i := 0; i < len(wordsar); i += 3 {
+		word1 := wordsar[i]
+		word2 := wordsar[i+1]
+		word3 := wordsar[i+2]
+		w1 := IndexOf(MnemonicWords, word1)
+		w2 := IndexOf(MnemonicWords, word2)
+		w3 := IndexOf(MnemonicWords, word3)
+
+		y := (w2 - w1) % n
+		z := (w3 - w2) % n
+
+		// Golang handles modulo with negative numbers different then most languages
+		// The modulo can be negative, we don't want that.
+		if z < 0 {
+			z += n
+		}
+		if y < 0 {
+			y += n
+		}
+		x := w1 + n*(y) + n*n*(z)
+		out += fmt.Sprintf("%08x", x)
+	}
+	return out
+}
diff --git a/crypto/mnemonic_test.go b/crypto/mnemonic_test.go
new file mode 100644
index 000000000..beff476e0
--- /dev/null
+++ b/crypto/mnemonic_test.go
@@ -0,0 +1,74 @@
+package crypto
+
+import (
+	"testing"
+)
+
+func TestMnDecode(t *testing.T) {
+	words := []string{
+		"ink",
+		"balance",
+		"gain",
+		"fear",
+		"happen",
+		"melt",
+		"mom",
+		"surface",
+		"stir",
+		"bottle",
+		"unseen",
+		"expression",
+		"important",
+		"curl",
+		"grant",
+		"fairy",
+		"across",
+		"back",
+		"figure",
+		"breast",
+		"nobody",
+		"scratch",
+		"worry",
+		"yesterday",
+	}
+	encode := "c61d43dc5bb7a4e754d111dae8105b6f25356492df5e50ecb33b858d94f8c338"
+	result := MnemonicDecode(words)
+	if encode != result {
+		t.Error("We expected", encode, "got", result, "instead")
+	}
+}
+func TestMnEncode(t *testing.T) {
+	encode := "c61d43dc5bb7a4e754d111dae8105b6f25356492df5e50ecb33b858d94f8c338"
+	result := []string{
+		"ink",
+		"balance",
+		"gain",
+		"fear",
+		"happen",
+		"melt",
+		"mom",
+		"surface",
+		"stir",
+		"bottle",
+		"unseen",
+		"expression",
+		"important",
+		"curl",
+		"grant",
+		"fairy",
+		"across",
+		"back",
+		"figure",
+		"breast",
+		"nobody",
+		"scratch",
+		"worry",
+		"yesterday",
+	}
+	words := MnemonicEncode(encode)
+	for i, word := range words {
+		if word != result[i] {
+			t.Error("Mnenonic does not match:", words, result)
+		}
+	}
+}
diff --git a/crypto/mnemonic_words.go b/crypto/mnemonic_words.go
new file mode 100644
index 000000000..ebd0d2690
--- /dev/null
+++ b/crypto/mnemonic_words.go
@@ -0,0 +1,1630 @@
+package crypto
+
+var MnemonicWords []string = []string{
+	"like",
+	"just",
+	"love",
+	"know",
+	"never",
+	"want",
+	"time",
+	"out",
+	"there",
+	"make",
+	"look",
+	"eye",
+	"down",
+	"only",
+	"think",
+	"heart",
+	"back",
+	"then",
+	"into",
+	"about",
+	"more",
+	"away",
+	"still",
+	"them",
+	"take",
+	"thing",
+	"even",
+	"through",
+	"long",
+	"always",
+	"world",
+	"too",
+	"friend",
+	"tell",
+	"try",
+	"hand",
+	"thought",
+	"over",
+	"here",
+	"other",
+	"need",
+	"smile",
+	"again",
+	"much",
+	"cry",
+	"been",
+	"night",
+	"ever",
+	"little",
+	"said",
+	"end",
+	"some",
+	"those",
+	"around",
+	"mind",
+	"people",
+	"girl",
+	"leave",
+	"dream",
+	"left",
+	"turn",
+	"myself",
+	"give",
+	"nothing",
+	"really",
+	"off",
+	"before",
+	"something",
+	"find",
+	"walk",
+	"wish",
+	"good",
+	"once",
+	"place",
+	"ask",
+	"stop",
+	"keep",
+	"watch",
+	"seem",
+	"everything",
+	"wait",
+	"got",
+	"yet",
+	"made",
+	"remember",
+	"start",
+	"alone",
+	"run",
+	"hope",
+	"maybe",
+	"believe",
+	"body",
+	"hate",
+	"after",
+	"close",
+	"talk",
+	"stand",
+	"own",
+	"each",
+	"hurt",
+	"help",
+	"home",
+	"god",
+	"soul",
+	"new",
+	"many",
+	"two",
+	"inside",
+	"should",
+	"true",
+	"first",
+	"fear",
+	"mean",
+	"better",
+	"play",
+	"another",
+	"gone",
+	"change",
+	"use",
+	"wonder",
+	"someone",
+	"hair",
+	"cold",
+	"open",
+	"best",
+	"any",
+	"behind",
+	"happen",
+	"water",
+	"dark",
+	"laugh",
+	"stay",
+	"forever",
+	"name",
+	"work",
+	"show",
+	"sky",
+	"break",
+	"came",
+	"deep",
+	"door",
+	"put",
+	"black",
+	"together",
+	"upon",
+	"happy",
+	"such",
+	"great",
+	"white",
+	"matter",
+	"fill",
+	"past",
+	"please",
+	"burn",
+	"cause",
+	"enough",
+	"touch",
+	"moment",
+	"soon",
+	"voice",
+	"scream",
+	"anything",
+	"stare",
+	"sound",
+	"red",
+	"everyone",
+	"hide",
+	"kiss",
+	"truth",
+	"death",
+	"beautiful",
+	"mine",
+	"blood",
+	"broken",
+	"very",
+	"pass",
+	"next",
+	"forget",
+	"tree",
+	"wrong",
+	"air",
+	"mother",
+	"understand",
+	"lip",
+	"hit",
+	"wall",
+	"memory",
+	"sleep",
+	"free",
+	"high",
+	"realize",
+	"school",
+	"might",
+	"skin",
+	"sweet",
+	"perfect",
+	"blue",
+	"kill",
+	"breath",
+	"dance",
+	"against",
+	"fly",
+	"between",
+	"grow",
+	"strong",
+	"under",
+	"listen",
+	"bring",
+	"sometimes",
+	"speak",
+	"pull",
+	"person",
+	"become",
+	"family",
+	"begin",
+	"ground",
+	"real",
+	"small",
+	"father",
+	"sure",
+	"feet",
+	"rest",
+	"young",
+	"finally",
+	"land",
+	"across",
+	"today",
+	"different",
+	"guy",
+	"line",
+	"fire",
+	"reason",
+	"reach",
+	"second",
+	"slowly",
+	"write",
+	"eat",
+	"smell",
+	"mouth",
+	"step",
+	"learn",
+	"three",
+	"floor",
+	"promise",
+	"breathe",
+	"darkness",
+	"push",
+	"earth",
+	"guess",
+	"save",
+	"song",
+	"above",
+	"along",
+	"both",
+	"color",
+	"house",
+	"almost",
+	"sorry",
+	"anymore",
+	"brother",
+	"okay",
+	"dear",
+	"game",
+	"fade",
+	"already",
+	"apart",
+	"warm",
+	"beauty",
+	"heard",
+	"notice",
+	"question",
+	"shine",
+	"began",
+	"piece",
+	"whole",
+	"shadow",
+	"secret",
+	"street",
+	"within",
+	"finger",
+	"point",
+	"morning",
+	"whisper",
+	"child",
+	"moon",
+	"green",
+	"story",
+	"glass",
+	"kid",
+	"silence",
+	"since",
+	"soft",
+	"yourself",
+	"empty",
+	"shall",
+	"angel",
+	"answer",
+	"baby",
+	"bright",
+	"dad",
+	"path",
+	"worry",
+	"hour",
+	"drop",
+	"follow",
+	"power",
+	"war",
+	"half",
+	"flow",
+	"heaven",
+	"act",
+	"chance",
+	"fact",
+	"least",
+	"tired",
+	"children",
+	"near",
+	"quite",
+	"afraid",
+	"rise",
+	"sea",
+	"taste",
+	"window",
+	"cover",
+	"nice",
+	"trust",
+	"lot",
+	"sad",
+	"cool",
+	"force",
+	"peace",
+	"return",
+	"blind",
+	"easy",
+	"ready",
+	"roll",
+	"rose",
+	"drive",
+	"held",
+	"music",
+	"beneath",
+	"hang",
+	"mom",
+	"paint",
+	"emotion",
+	"quiet",
+	"clear",
+	"cloud",
+	"few",
+	"pretty",
+	"bird",
+	"outside",
+	"paper",
+	"picture",
+	"front",
+	"rock",
+	"simple",
+	"anyone",
+	"meant",
+	"reality",
+	"road",
+	"sense",
+	"waste",
+	"bit",
+	"leaf",
+	"thank",
+	"happiness",
+	"meet",
+	"men",
+	"smoke",
+	"truly",
+	"decide",
+	"self",
+	"age",
+	"book",
+	"form",
+	"alive",
+	"carry",
+	"escape",
+	"damn",
+	"instead",
+	"able",
+	"ice",
+	"minute",
+	"throw",
+	"catch",
+	"leg",
+	"ring",
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+	"disguise",
+	"eager",
+	"erase",
+	"essence",
+	"everytime",
+	"expression",
+	"fan",
+	"flag",
+	"flirt",
+	"foul",
+	"fur",
+	"giggle",
+	"glorious",
+	"ignorance",
+	"law",
+	"lifeless",
+	"measure",
+	"mighty",
+	"muse",
+	"north",
+	"opposite",
+	"paradise",
+	"patience",
+	"patient",
+	"pencil",
+	"petal",
+	"plate",
+	"ponder",
+	"possibly",
+	"practice",
+	"slice",
+	"spell",
+	"stock",
+	"strife",
+	"strip",
+	"suffocate",
+	"suit",
+	"tender",
+	"tool",
+	"trade",
+	"velvet",
+	"verse",
+	"waist",
+	"witch",
+	"aunt",
+	"bench",
+	"bold",
+	"cap",
+	"certainly",
+	"click",
+	"companion",
+	"creator",
+	"dart",
+	"delicate",
+	"determine",
+	"dish",
+	"dragon",
+	"drama",
+	"drum",
+	"dude",
+	"everybody",
+	"feast",
+	"forehead",
+	"former",
+	"fright",
+	"fully",
+	"gas",
+	"hook",
+	"hurl",
+	"invite",
+	"juice",
+	"manage",
+	"moral",
+	"possess",
+	"raw",
+	"rebel",
+	"royal",
+	"scale",
+	"scary",
+	"several",
+	"slight",
+	"stubborn",
+	"swell",
+	"talent",
+	"tea",
+	"terrible",
+	"thread",
+	"torment",
+	"trickle",
+	"usually",
+	"vast",
+	"violence",
+	"weave",
+	"acid",
+	"agony",
+	"ashamed",
+	"awe",
+	"belly",
+	"blend",
+	"blush",
+	"character",
+	"cheat",
+	"common",
+	"company",
+	"coward",
+	"creak",
+	"danger",
+	"deadly",
+	"defense",
+	"define",
+	"depend",
+	"desperate",
+	"destination",
+	"dew",
+	"duck",
+	"dusty",
+	"embarrass",
+	"engine",
+	"example",
+	"explore",
+	"foe",
+	"freely",
+	"frustrate",
+	"generation",
+	"glove",
+	"guilty",
+	"health",
+	"hurry",
+	"idiot",
+	"impossible",
+	"inhale",
+	"jaw",
+	"kingdom",
+	"mention",
+	"mist",
+	"moan",
+	"mumble",
+	"mutter",
+	"observe",
+	"ode",
+	"pathetic",
+	"pattern",
+	"pie",
+	"prefer",
+	"puff",
+	"rape",
+	"rare",
+	"revenge",
+	"rude",
+	"scrape",
+	"spiral",
+	"squeeze",
+	"strain",
+	"sunset",
+	"suspend",
+	"sympathy",
+	"thigh",
+	"throne",
+	"total",
+	"unseen",
+	"weapon",
+	"weary",
+}
diff --git a/ethdb/.gitignore b/ethdb/.gitignore
new file mode 100644
index 000000000..f725d58d1
--- /dev/null
+++ b/ethdb/.gitignore
@@ -0,0 +1,12 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile ~/.gitignore_global
+
+/tmp
+*/**/*un~
+*un~
+.DS_Store
+*/**/.DS_Store
+
diff --git a/ethdb/README.md b/ethdb/README.md
new file mode 100644
index 000000000..5bed8eedc
--- /dev/null
+++ b/ethdb/README.md
@@ -0,0 +1,11 @@
+# ethdb
+
+The ethdb package contains the ethereum database interfaces
+
+# Installation
+
+`go get github.com/ethereum/ethdb-go`
+
+# Usage
+
+Todo :-)
diff --git a/ethdb/database.go b/ethdb/database.go
new file mode 100644
index 000000000..19aa83466
--- /dev/null
+++ b/ethdb/database.go
@@ -0,0 +1,89 @@
+package ethdb
+
+import (
+	"fmt"
+	"path"
+
+	"github.com/ethereum/go-ethereum/compression/rle"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/syndtr/goleveldb/leveldb"
+	"github.com/syndtr/goleveldb/leveldb/iterator"
+)
+
+type LDBDatabase struct {
+	db   *leveldb.DB
+	comp bool
+}
+
+func NewLDBDatabase(name string) (*LDBDatabase, error) {
+	dbPath := path.Join(ethutil.Config.ExecPath, name)
+
+	// Open the db
+	db, err := leveldb.OpenFile(dbPath, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	database := &LDBDatabase{db: db, comp: true}
+
+	return database, nil
+}
+
+func (self *LDBDatabase) Put(key []byte, value []byte) {
+	if self.comp {
+		value = rle.Compress(value)
+	}
+
+	err := self.db.Put(key, value, nil)
+	if err != nil {
+		fmt.Println("Error put", err)
+	}
+}
+
+func (self *LDBDatabase) Get(key []byte) ([]byte, error) {
+	dat, err := self.db.Get(key, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	if self.comp {
+		return rle.Decompress(dat)
+	}
+
+	return dat, nil
+}
+
+func (self *LDBDatabase) Delete(key []byte) error {
+	return self.db.Delete(key, nil)
+}
+
+func (self *LDBDatabase) LastKnownTD() []byte {
+	data, _ := self.Get([]byte("LTD"))
+
+	if len(data) == 0 {
+		data = []byte{0x0}
+	}
+
+	return data
+}
+
+func (self *LDBDatabase) NewIterator() iterator.Iterator {
+	return self.db.NewIterator(nil, nil)
+}
+
+func (self *LDBDatabase) Close() {
+	// Close the leveldb database
+	self.db.Close()
+}
+
+func (self *LDBDatabase) Print() {
+	iter := self.db.NewIterator(nil, nil)
+	for iter.Next() {
+		key := iter.Key()
+		value := iter.Value()
+
+		fmt.Printf("%x(%d): ", key, len(key))
+		node := ethutil.NewValueFromBytes(value)
+		fmt.Printf("%v\n", node)
+	}
+}
diff --git a/ethdb/database_test.go b/ethdb/database_test.go
new file mode 100644
index 000000000..2cbaf58e0
--- /dev/null
+++ b/ethdb/database_test.go
@@ -0,0 +1,28 @@
+package ethdb
+
+/*
+import (
+	"bytes"
+	"testing"
+)
+
+func TestCompression(t *testing.T) {
+	ethutil.ReadConfig("", "/tmp", "")
+
+	db, err := NewLDBDatabase("testdb")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	in := make([]byte, 10)
+	db.Put([]byte("test1"), in)
+	out, err := db.Get([]byte("test1"))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if bytes.Compare(out, in) != 0 {
+		t.Error("put get", in, out)
+	}
+}
+*/
diff --git a/ethdb/memory_database.go b/ethdb/memory_database.go
new file mode 100644
index 000000000..48aa830e7
--- /dev/null
+++ b/ethdb/memory_database.go
@@ -0,0 +1,67 @@
+package ethdb
+
+import (
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+/*
+ * This is a test memory database. Do not use for any production it does not get persisted
+ */
+type MemDatabase struct {
+	db map[string][]byte
+}
+
+func NewMemDatabase() (*MemDatabase, error) {
+	db := &MemDatabase{db: make(map[string][]byte)}
+
+	return db, nil
+}
+
+func (db *MemDatabase) Put(key []byte, value []byte) {
+	db.db[string(key)] = value
+}
+
+func (db *MemDatabase) Set(key []byte, value []byte) {
+	db.Put(key, value)
+}
+
+func (db *MemDatabase) Get(key []byte) ([]byte, error) {
+	return db.db[string(key)], nil
+}
+
+/*
+func (db *MemDatabase) GetKeys() []*ethutil.Key {
+	data, _ := db.Get([]byte("KeyRing"))
+
+	return []*ethutil.Key{ethutil.NewKeyFromBytes(data)}
+}
+*/
+
+func (db *MemDatabase) Delete(key []byte) error {
+	delete(db.db, string(key))
+
+	return nil
+}
+
+func (db *MemDatabase) Print() {
+	for key, val := range db.db {
+		fmt.Printf("%x(%d): ", key, len(key))
+		node := ethutil.NewValueFromBytes(val)
+		fmt.Printf("%q\n", node.Interface())
+	}
+}
+
+func (db *MemDatabase) Close() {
+}
+
+func (db *MemDatabase) LastKnownTD() []byte {
+	data, _ := db.Get([]byte("LastKnownTotalDifficulty"))
+
+	if len(data) == 0 || data == nil {
+		data = []byte{0x0}
+	}
+
+	return data
+}
diff --git a/ethereum.go b/ethereum.go
new file mode 100644
index 000000000..5d74e28e9
--- /dev/null
+++ b/ethereum.go
@@ -0,0 +1,659 @@
+package eth
+
+import (
+	"container/list"
+	"encoding/json"
+	"fmt"
+	"math/big"
+	"math/rand"
+	"net"
+	"path"
+	"strconv"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/rpc"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/wire"
+)
+
+const (
+	seedTextFileUri string = "http://www.ethereum.org/servers.poc3.txt"
+	seedNodeAddress        = "poc-7.ethdev.com:30303"
+)
+
+var loggerger = logger.NewLogger("SERV")
+
+func eachPeer(peers *list.List, callback func(*Peer, *list.Element)) {
+	// Loop thru the peers and close them (if we had them)
+	for e := peers.Front(); e != nil; e = e.Next() {
+		callback(e.Value.(*Peer), e)
+	}
+}
+
+const (
+	processReapingTimeout = 60 // TODO increase
+)
+
+type Ethereum struct {
+	// Channel for shutting down the ethereum
+	shutdownChan chan bool
+	quit         chan bool
+
+	// DB interface
+	db ethutil.Database
+	// State manager for processing new blocks and managing the over all states
+	blockManager *core.BlockManager
+	// The transaction pool. Transaction can be pushed on this pool
+	// for later including in the blocks
+	txPool *core.TxPool
+	// The canonical chain
+	blockChain *core.ChainManager
+	// The block pool
+	blockPool *BlockPool
+	// Eventer
+	eventMux event.TypeMux
+	// Peers
+	peers *list.List
+	// Nonce
+	Nonce uint64
+
+	Addr net.Addr
+	Port string
+
+	blacklist [][]byte
+
+	peerMut sync.Mutex
+
+	// Capabilities for outgoing peers
+	serverCaps Caps
+
+	nat NAT
+
+	// Specifies the desired amount of maximum peers
+	MaxPeers int
+
+	Mining bool
+
+	listening bool
+
+	RpcServer *rpc.JsonRpcServer
+
+	keyManager *crypto.KeyManager
+
+	clientIdentity wire.ClientIdentity
+
+	isUpToDate bool
+
+	filterMu sync.RWMutex
+	filterId int
+	filters  map[int]*core.Filter
+}
+
+func New(db ethutil.Database, clientIdentity wire.ClientIdentity, keyManager *crypto.KeyManager, caps Caps, usePnp bool) (*Ethereum, error) {
+	var err error
+	var nat NAT
+
+	if usePnp {
+		nat, err = Discover()
+		if err != nil {
+			loggerger.Debugln("UPnP failed", err)
+		}
+	}
+
+	bootstrapDb(db)
+
+	ethutil.Config.Db = db
+
+	nonce, _ := ethutil.RandomUint64()
+	ethereum := &Ethereum{
+		shutdownChan:   make(chan bool),
+		quit:           make(chan bool),
+		db:             db,
+		peers:          list.New(),
+		Nonce:          nonce,
+		serverCaps:     caps,
+		nat:            nat,
+		keyManager:     keyManager,
+		clientIdentity: clientIdentity,
+		isUpToDate:     true,
+		filters:        make(map[int]*core.Filter),
+	}
+
+	ethereum.blockPool = NewBlockPool(ethereum)
+	ethereum.blockChain = core.NewChainManager(ethereum.EventMux())
+	ethereum.txPool = core.NewTxPool(ethereum.blockChain, ethereum, ethereum.EventMux())
+	ethereum.blockManager = core.NewBlockManager(ethereum.txPool, ethereum.blockChain, ethereum.EventMux())
+	ethereum.blockChain.SetProcessor(ethereum.blockManager)
+
+	// Start the tx pool
+	ethereum.txPool.Start()
+
+	return ethereum, nil
+}
+
+func (s *Ethereum) KeyManager() *crypto.KeyManager {
+	return s.keyManager
+}
+
+func (s *Ethereum) ClientIdentity() wire.ClientIdentity {
+	return s.clientIdentity
+}
+
+func (s *Ethereum) ChainManager() *core.ChainManager {
+	return s.blockChain
+}
+
+func (s *Ethereum) BlockManager() *core.BlockManager {
+	return s.blockManager
+}
+
+func (s *Ethereum) TxPool() *core.TxPool {
+	return s.txPool
+}
+func (s *Ethereum) BlockPool() *BlockPool {
+	return s.blockPool
+}
+func (s *Ethereum) EventMux() *event.TypeMux {
+	return &s.eventMux
+}
+func (self *Ethereum) Db() ethutil.Database {
+	return self.db
+}
+
+func (s *Ethereum) ServerCaps() Caps {
+	return s.serverCaps
+}
+func (s *Ethereum) IsMining() bool {
+	return s.Mining
+}
+func (s *Ethereum) PeerCount() int {
+	return s.peers.Len()
+}
+func (s *Ethereum) IsUpToDate() bool {
+	upToDate := true
+	eachPeer(s.peers, func(peer *Peer, e *list.Element) {
+		if atomic.LoadInt32(&peer.connected) == 1 {
+			if peer.catchingUp == true && peer.versionKnown {
+				upToDate = false
+			}
+		}
+	})
+	return upToDate
+}
+func (s *Ethereum) PushPeer(peer *Peer) {
+	s.peers.PushBack(peer)
+}
+func (s *Ethereum) IsListening() bool {
+	return s.listening
+}
+
+func (s *Ethereum) HighestTDPeer() (td *big.Int) {
+	td = big.NewInt(0)
+
+	eachPeer(s.peers, func(p *Peer, v *list.Element) {
+		if p.td.Cmp(td) > 0 {
+			td = p.td
+		}
+	})
+
+	return
+}
+
+func (self *Ethereum) BlacklistPeer(peer *Peer) {
+	self.blacklist = append(self.blacklist, peer.pubkey)
+}
+
+func (s *Ethereum) AddPeer(conn net.Conn) {
+	peer := NewPeer(conn, s, true)
+
+	if peer != nil {
+		if s.peers.Len() < s.MaxPeers {
+			peer.Start()
+		} else {
+			loggerger.Debugf("Max connected peers reached. Not adding incoming peer.")
+		}
+	}
+}
+
+func (s *Ethereum) ProcessPeerList(addrs []string) {
+	for _, addr := range addrs {
+		// TODO Probably requires some sanity checks
+		s.ConnectToPeer(addr)
+	}
+}
+
+func (s *Ethereum) ConnectToPeer(addr string) error {
+	if s.peers.Len() < s.MaxPeers {
+		var alreadyConnected bool
+
+		ahost, aport, _ := net.SplitHostPort(addr)
+		var chost string
+
+		ips, err := net.LookupIP(ahost)
+
+		if err != nil {
+			return err
+		} else {
+			// If more then one ip is available try stripping away the ipv6 ones
+			if len(ips) > 1 {
+				var ipsv4 []net.IP
+				// For now remove the ipv6 addresses
+				for _, ip := range ips {
+					if strings.Contains(ip.String(), "::") {
+						continue
+					} else {
+						ipsv4 = append(ipsv4, ip)
+					}
+				}
+				if len(ipsv4) == 0 {
+					return fmt.Errorf("[SERV] No IPV4 addresses available for hostname")
+				}
+
+				// Pick a random ipv4 address, simulating round-robin DNS.
+				rand.Seed(time.Now().UTC().UnixNano())
+				i := rand.Intn(len(ipsv4))
+				chost = ipsv4[i].String()
+			} else {
+				if len(ips) == 0 {
+					return fmt.Errorf("[SERV] No IPs resolved for the given hostname")
+					return nil
+				}
+				chost = ips[0].String()
+			}
+		}
+
+		eachPeer(s.peers, func(p *Peer, v *list.Element) {
+			if p.conn == nil {
+				return
+			}
+			phost, pport, _ := net.SplitHostPort(p.conn.RemoteAddr().String())
+
+			if phost == chost && pport == aport {
+				alreadyConnected = true
+				//loggerger.Debugf("Peer %s already added.\n", chost)
+				return
+			}
+		})
+
+		if alreadyConnected {
+			return nil
+		}
+
+		NewOutboundPeer(addr, s, s.serverCaps)
+	}
+
+	return nil
+}
+
+func (s *Ethereum) OutboundPeers() []*Peer {
+	// Create a new peer slice with at least the length of the total peers
+	outboundPeers := make([]*Peer, s.peers.Len())
+	length := 0
+	eachPeer(s.peers, func(p *Peer, e *list.Element) {
+		if !p.inbound && p.conn != nil {
+			outboundPeers[length] = p
+			length++
+		}
+	})
+
+	return outboundPeers[:length]
+}
+
+func (s *Ethereum) InboundPeers() []*Peer {
+	// Create a new peer slice with at least the length of the total peers
+	inboundPeers := make([]*Peer, s.peers.Len())
+	length := 0
+	eachPeer(s.peers, func(p *Peer, e *list.Element) {
+		if p.inbound {
+			inboundPeers[length] = p
+			length++
+		}
+	})
+
+	return inboundPeers[:length]
+}
+
+func (s *Ethereum) InOutPeers() []*Peer {
+	// Reap the dead peers first
+	s.reapPeers()
+
+	// Create a new peer slice with at least the length of the total peers
+	inboundPeers := make([]*Peer, s.peers.Len())
+	length := 0
+	eachPeer(s.peers, func(p *Peer, e *list.Element) {
+		// Only return peers with an actual ip
+		if len(p.host) > 0 {
+			inboundPeers[length] = p
+			length++
+		}
+	})
+
+	return inboundPeers[:length]
+}
+
+func (s *Ethereum) Broadcast(msgType wire.MsgType, data []interface{}) {
+	msg := wire.NewMessage(msgType, data)
+	s.BroadcastMsg(msg)
+}
+
+func (s *Ethereum) BroadcastMsg(msg *wire.Msg) {
+	eachPeer(s.peers, func(p *Peer, e *list.Element) {
+		p.QueueMessage(msg)
+	})
+}
+
+func (s *Ethereum) Peers() *list.List {
+	return s.peers
+}
+
+func (s *Ethereum) reapPeers() {
+	eachPeer(s.peers, func(p *Peer, e *list.Element) {
+		if atomic.LoadInt32(&p.disconnect) == 1 || (p.inbound && (time.Now().Unix()-p.lastPong) > int64(5*time.Minute)) {
+			s.removePeerElement(e)
+		}
+	})
+}
+
+func (s *Ethereum) removePeerElement(e *list.Element) {
+	s.peerMut.Lock()
+	defer s.peerMut.Unlock()
+
+	s.peers.Remove(e)
+
+	s.eventMux.Post(PeerListEvent{s.peers})
+}
+
+func (s *Ethereum) RemovePeer(p *Peer) {
+	eachPeer(s.peers, func(peer *Peer, e *list.Element) {
+		if peer == p {
+			s.removePeerElement(e)
+		}
+	})
+}
+
+func (s *Ethereum) reapDeadPeerHandler() {
+	reapTimer := time.NewTicker(processReapingTimeout * time.Second)
+
+	for {
+		select {
+		case <-reapTimer.C:
+			s.reapPeers()
+		}
+	}
+}
+
+// Start the ethereum
+func (s *Ethereum) Start(seed bool) {
+	s.blockPool.Start()
+
+	// Bind to addr and port
+	ln, err := net.Listen("tcp", ":"+s.Port)
+	if err != nil {
+		loggerger.Warnf("Port %s in use. Connection listening disabled. Acting as client", s.Port)
+		s.listening = false
+	} else {
+		s.listening = true
+		// Starting accepting connections
+		loggerger.Infoln("Ready and accepting connections")
+		// Start the peer handler
+		go s.peerHandler(ln)
+	}
+
+	if s.nat != nil {
+		go s.upnpUpdateThread()
+	}
+
+	// Start the reaping processes
+	go s.reapDeadPeerHandler()
+	go s.update()
+	go s.filterLoop()
+
+	if seed {
+		s.Seed()
+	}
+	s.ConnectToPeer("localhost:40404")
+	loggerger.Infoln("Server started")
+}
+
+func (s *Ethereum) Seed() {
+	// Sorry Py person. I must blacklist. you perform badly
+	s.blacklist = append(s.blacklist, ethutil.Hex2Bytes("64656330303561383532336435376331616537643864663236623336313863373537353163636634333530626263396330346237336262623931383064393031"))
+	ips := PastPeers()
+	if len(ips) > 0 {
+		for _, ip := range ips {
+			loggerger.Infoln("Connecting to previous peer ", ip)
+			s.ConnectToPeer(ip)
+		}
+	} else {
+		loggerger.Debugln("Retrieving seed nodes")
+
+		// Eth-Go Bootstrapping
+		ips, er := net.LookupIP("seed.bysh.me")
+		if er == nil {
+			peers := []string{}
+			for _, ip := range ips {
+				node := fmt.Sprintf("%s:%d", ip.String(), 30303)
+				loggerger.Debugln("Found DNS Go Peer:", node)
+				peers = append(peers, node)
+			}
+			s.ProcessPeerList(peers)
+		}
+
+		// Official DNS Bootstrapping
+		_, nodes, err := net.LookupSRV("eth", "tcp", "ethereum.org")
+		if err == nil {
+			peers := []string{}
+			// Iterate SRV nodes
+			for _, n := range nodes {
+				target := n.Target
+				port := strconv.Itoa(int(n.Port))
+				// Resolve target to ip (Go returns list, so may resolve to multiple ips?)
+				addr, err := net.LookupHost(target)
+				if err == nil {
+					for _, a := range addr {
+						// Build string out of SRV port and Resolved IP
+						peer := net.JoinHostPort(a, port)
+						loggerger.Debugln("Found DNS Bootstrap Peer:", peer)
+						peers = append(peers, peer)
+					}
+				} else {
+					loggerger.Debugln("Couldn't resolve :", target)
+				}
+			}
+			// Connect to Peer list
+			s.ProcessPeerList(peers)
+		}
+
+		s.ConnectToPeer(seedNodeAddress)
+	}
+}
+
+func (s *Ethereum) peerHandler(listener net.Listener) {
+	for {
+		conn, err := listener.Accept()
+		if err != nil {
+			loggerger.Debugln(err)
+
+			continue
+		}
+
+		go s.AddPeer(conn)
+	}
+}
+
+func (s *Ethereum) Stop() {
+	// Stop eventMux first, it will close all subscriptions.
+	s.eventMux.Stop()
+
+	// Close the database
+	defer s.db.Close()
+
+	var ips []string
+	eachPeer(s.peers, func(p *Peer, e *list.Element) {
+		ips = append(ips, p.conn.RemoteAddr().String())
+	})
+
+	if len(ips) > 0 {
+		d, _ := json.MarshalIndent(ips, "", "    ")
+		ethutil.WriteFile(path.Join(ethutil.Config.ExecPath, "known_peers.json"), d)
+	}
+
+	eachPeer(s.peers, func(p *Peer, e *list.Element) {
+		p.Stop()
+	})
+
+	close(s.quit)
+
+	if s.RpcServer != nil {
+		s.RpcServer.Stop()
+	}
+	s.txPool.Stop()
+	s.blockPool.Stop()
+
+	loggerger.Infoln("Server stopped")
+	close(s.shutdownChan)
+}
+
+// This function will wait for a shutdown and resumes main thread execution
+func (s *Ethereum) WaitForShutdown() {
+	<-s.shutdownChan
+}
+
+func (s *Ethereum) upnpUpdateThread() {
+	// Go off immediately to prevent code duplication, thereafter we renew
+	// lease every 15 minutes.
+	timer := time.NewTimer(5 * time.Minute)
+	lport, _ := strconv.ParseInt(s.Port, 10, 16)
+	first := true
+out:
+	for {
+		select {
+		case <-timer.C:
+			var err error
+			_, err = s.nat.AddPortMapping("TCP", int(lport), int(lport), "eth listen port", 20*60)
+			if err != nil {
+				loggerger.Debugln("can't add UPnP port mapping:", err)
+				break out
+			}
+			if first && err == nil {
+				_, err = s.nat.GetExternalAddress()
+				if err != nil {
+					loggerger.Debugln("UPnP can't get external address:", err)
+					continue out
+				}
+				first = false
+			}
+			timer.Reset(time.Minute * 15)
+		case <-s.quit:
+			break out
+		}
+	}
+
+	timer.Stop()
+
+	if err := s.nat.DeletePortMapping("TCP", int(lport), int(lport)); err != nil {
+		loggerger.Debugln("unable to remove UPnP port mapping:", err)
+	} else {
+		loggerger.Debugln("succesfully disestablished UPnP port mapping")
+	}
+}
+
+func (self *Ethereum) update() {
+	upToDateTimer := time.NewTicker(1 * time.Second)
+
+out:
+	for {
+		select {
+		case <-upToDateTimer.C:
+			if self.IsUpToDate() && !self.isUpToDate {
+				self.eventMux.Post(ChainSyncEvent{false})
+				self.isUpToDate = true
+			} else if !self.IsUpToDate() && self.isUpToDate {
+				self.eventMux.Post(ChainSyncEvent{true})
+				self.isUpToDate = false
+			}
+		case <-self.quit:
+			break out
+		}
+	}
+}
+
+// InstallFilter adds filter for blockchain events.
+// The filter's callbacks will run for matching blocks and messages.
+// The filter should not be modified after it has been installed.
+func (self *Ethereum) InstallFilter(filter *core.Filter) (id int) {
+	self.filterMu.Lock()
+	id = self.filterId
+	self.filters[id] = filter
+	self.filterId++
+	self.filterMu.Unlock()
+	return id
+}
+
+func (self *Ethereum) UninstallFilter(id int) {
+	self.filterMu.Lock()
+	delete(self.filters, id)
+	self.filterMu.Unlock()
+}
+
+// GetFilter retrieves a filter installed using InstallFilter.
+// The filter may not be modified.
+func (self *Ethereum) GetFilter(id int) *core.Filter {
+	self.filterMu.RLock()
+	defer self.filterMu.RUnlock()
+	return self.filters[id]
+}
+
+func (self *Ethereum) filterLoop() {
+	// Subscribe to events
+	events := self.eventMux.Subscribe(core.NewBlockEvent{}, state.Messages(nil))
+	for event := range events.Chan() {
+		switch event := event.(type) {
+		case core.NewBlockEvent:
+			self.filterMu.RLock()
+			for _, filter := range self.filters {
+				if filter.BlockCallback != nil {
+					filter.BlockCallback(event.Block)
+				}
+			}
+			self.filterMu.RUnlock()
+
+		case state.Messages:
+			self.filterMu.RLock()
+			for _, filter := range self.filters {
+				if filter.MessageCallback != nil {
+					msgs := filter.FilterMessages(event)
+					if len(msgs) > 0 {
+						filter.MessageCallback(msgs)
+					}
+				}
+			}
+			self.filterMu.RUnlock()
+		}
+	}
+}
+
+func bootstrapDb(db ethutil.Database) {
+	d, _ := db.Get([]byte("ProtocolVersion"))
+	protov := ethutil.NewValue(d).Uint()
+
+	if protov == 0 {
+		db.Put([]byte("ProtocolVersion"), ethutil.NewValue(ProtocolVersion).Bytes())
+	}
+}
+
+func PastPeers() []string {
+	var ips []string
+	data, _ := ethutil.ReadAllFile(path.Join(ethutil.Config.ExecPath, "known_peers.json"))
+	json.Unmarshal([]byte(data), &ips)
+
+	return ips
+}
diff --git a/ethereum/cmd.go b/ethereum/cmd.go
deleted file mode 100644
index 5ddc91619..000000000
--- a/ethereum/cmd.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package main
-
-import (
-	"io/ioutil"
-	"os"
-
-	"github.com/ethereum/eth-go"
-	"github.com/ethereum/go-ethereum/ethereum/repl"
-	"github.com/ethereum/go-ethereum/javascript"
-	"github.com/ethereum/go-ethereum/utils"
-)
-
-func InitJsConsole(ethereum *eth.Ethereum) {
-	repl := ethrepl.NewJSRepl(ethereum)
-	go repl.Start()
-	utils.RegisterInterrupt(func(os.Signal) {
-		repl.Stop()
-	})
-}
-
-func ExecJsFile(ethereum *eth.Ethereum, InputFile string) {
-	file, err := os.Open(InputFile)
-	if err != nil {
-		logger.Fatalln(err)
-	}
-	content, err := ioutil.ReadAll(file)
-	if err != nil {
-		logger.Fatalln(err)
-	}
-	re := javascript.NewJSRE(ethereum)
-	utils.RegisterInterrupt(func(os.Signal) {
-		re.Stop()
-	})
-	re.Run(string(content))
-}
diff --git a/ethereum/repl/repl_windows.go b/ethereum/repl/repl_windows.go
deleted file mode 100644
index 4106c89bc..000000000
--- a/ethereum/repl/repl_windows.go
+++ /dev/null
@@ -1,24 +0,0 @@
-package ethrepl
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-)
-
-func (self *JSRepl) read() {
-	reader := bufio.NewReader(os.Stdin)
-	for {
-		fmt.Printf(self.prompt)
-		str, _, err := reader.ReadLine()
-		if err != nil {
-			fmt.Println("Error reading input", err)
-		} else {
-			self.parseInput(string(str))
-		}
-	}
-}
-
-func (self *JSRepl) PrintValue(value otto.Value) {
-	fmt.Println(value)
-}
diff --git a/ethutil/.gitignore b/ethutil/.gitignore
new file mode 100644
index 000000000..f725d58d1
--- /dev/null
+++ b/ethutil/.gitignore
@@ -0,0 +1,12 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile ~/.gitignore_global
+
+/tmp
+*/**/*un~
+*un~
+.DS_Store
+*/**/.DS_Store
+
diff --git a/ethutil/.travis.yml b/ethutil/.travis.yml
new file mode 100644
index 000000000..69359072d
--- /dev/null
+++ b/ethutil/.travis.yml
@@ -0,0 +1,3 @@
+language: go
+go:
+  - 1.2
diff --git a/ethutil/README.md b/ethutil/README.md
new file mode 100644
index 000000000..1ed56b71b
--- /dev/null
+++ b/ethutil/README.md
@@ -0,0 +1,139 @@
+# ethutil
+
+[![Build
+Status](https://travis-ci.org/ethereum/go-ethereum.png?branch=master)](https://travis-ci.org/ethereum/go-ethereum)
+
+The ethutil package contains the ethereum utility library.
+
+# Installation
+
+`go get github.com/ethereum/ethutil-go`
+
+# Usage
+
+## RLP (Recursive Linear Prefix) Encoding
+
+RLP Encoding is an encoding scheme utilized by the Ethereum project. It
+encodes any native value or list to string.
+
+More in depth information about the Encoding scheme see the [Wiki](http://wiki.ethereum.org/index.php/RLP)
+article.
+
+```go
+rlp := ethutil.Encode("doge")
+fmt.Printf("%q\n", rlp) // => "\0x83dog"
+
+rlp = ethutil.Encode([]interface{}{"dog", "cat"})
+fmt.Printf("%q\n", rlp) // => "\0xc8\0x83dog\0x83cat"
+decoded := ethutil.Decode(rlp)
+fmt.Println(decoded) // => ["dog" "cat"]
+```
+
+## Patricia Trie
+
+Patricie Tree is a merkle trie utilized by the Ethereum project.
+
+More in depth information about the (modified) Patricia Trie can be
+found on the [Wiki](http://wiki.ethereum.org/index.php/Patricia_Tree).
+
+The patricia trie uses a db as backend and could be anything as long as
+it satisfies the Database interface found in `ethutil/db.go`.
+
+```go
+db := NewDatabase()
+
+// db, root
+trie := ethutil.NewTrie(db, "")
+
+trie.Put("puppy", "dog")
+trie.Put("horse", "stallion")
+trie.Put("do", "verb")
+trie.Put("doge", "coin")
+
+// Look up the key "do" in the trie
+out := trie.Get("do")
+fmt.Println(out) // => verb
+
+trie.Delete("puppy")
+```
+
+The patricia trie, in combination with RLP, provides a robust,
+cryptographically authenticated data structure that can be used to store
+all (key, value) bindings.
+
+```go
+// ... Create db/trie
+
+// Note that RLP uses interface slices as list
+value := ethutil.Encode([]interface{}{"one", 2, "three", []interface{}{42}})
+// Store the RLP encoded value of the list
+trie.Put("mykey", value)
+```
+
+## Value
+
+Value is a Generic Value which is used in combination with RLP data or
+`([])interface{}` structures. It may serve as a bridge between RLP data
+and actual real values and takes care of all the type checking and
+casting. Unlike Go's `reflect.Value` it does not panic if it's unable to
+cast to the requested value. It simple returns the base value of that
+type (e.g. `Slice()` returns []interface{}, `Uint()` return 0, etc).
+
+### Creating a new Value
+
+`NewEmptyValue()` returns a new \*Value with it's initial value set to a
+`[]interface{}`
+
+`AppendList()` appends a list to the current value.
+
+`Append(v)` appends the value (v) to the current value/list.
+
+```go
+val := ethutil.NewEmptyValue().Append(1).Append("2")
+val.AppendList().Append(3)
+```
+
+### Retrieving values
+
+`Get(i)` returns the `i` item in the list.
+
+`Uint()` returns the value as an unsigned int64.
+
+`Slice()` returns the value as a interface slice.
+
+`Str()` returns the value as a string.
+
+`Bytes()` returns the value as a byte slice.
+
+`Len()` assumes current to be a slice and returns its length.
+
+`Byte()` returns the value as a single byte.
+
+```go
+val := ethutil.NewValue([]interface{}{1,"2",[]interface{}{3}})
+val.Get(0).Uint() // => 1
+val.Get(1).Str()  // => "2"
+s := val.Get(2)   // => Value([]interface{}{3})
+s.Get(0).Uint()   // => 3
+```
+
+## Decoding
+
+Decoding streams of RLP data is simplified
+
+```go
+val := ethutil.NewValueFromBytes(rlpData)
+val.Get(0).Uint()
+```
+
+## Encoding
+
+Encoding from Value to RLP is done with the `Encode` method. The
+underlying value can be anything RLP can encode (int, str, lists, bytes)
+
+```go
+val := ethutil.NewValue([]interface{}{1,"2",[]interface{}{3}})
+rlp := val.Encode()
+// Store the rlp data
+Store(rlp)
+```
diff --git a/ethutil/big.go b/ethutil/big.go
new file mode 100644
index 000000000..2ff1c72d8
--- /dev/null
+++ b/ethutil/big.go
@@ -0,0 +1,116 @@
+package ethutil
+
+import "math/big"
+
+// Big pow
+//
+// Returns the power of two big integers
+func BigPow(a, b int) *big.Int {
+	c := new(big.Int)
+	c.Exp(big.NewInt(int64(a)), big.NewInt(int64(b)), big.NewInt(0))
+
+	return c
+}
+
+// Big
+//
+// Shortcut for new(big.Int).SetString(..., 0)
+func Big(num string) *big.Int {
+	n := new(big.Int)
+	n.SetString(num, 0)
+
+	return n
+}
+
+// BigD
+//
+// Shortcut for new(big.Int).SetBytes(...)
+func BigD(data []byte) *big.Int {
+	n := new(big.Int)
+	n.SetBytes(data)
+
+	return n
+}
+
+func BitTest(num *big.Int, i int) bool {
+	return num.Bit(i) > 0
+}
+
+// To256
+//
+// "cast" the big int to a 256 big int (i.e., limit to)
+var tt256 = new(big.Int).Lsh(big.NewInt(1), 256)
+var tt256m1 = new(big.Int).Sub(new(big.Int).Lsh(big.NewInt(1), 256), big.NewInt(1))
+var tt255 = new(big.Int).Lsh(big.NewInt(1), 255)
+
+func U256(x *big.Int) *big.Int {
+	//if x.Cmp(Big0) < 0 {
+	//		return new(big.Int).Add(tt256, x)
+	//	}
+
+	x.And(x, tt256m1)
+
+	return x
+}
+
+func S256(x *big.Int) *big.Int {
+	if x.Cmp(tt255) < 0 {
+		return x
+	} else {
+		// We don't want to modify x, ever
+		return new(big.Int).Sub(x, tt256)
+	}
+}
+
+func FirstBitSet(v *big.Int) int {
+	for i := 0; i < v.BitLen(); i++ {
+		if v.Bit(i) > 0 {
+			return i
+		}
+	}
+
+	return v.BitLen()
+}
+
+// Big to bytes
+//
+// Returns the bytes of a big integer with the size specified by **base**
+// Attempts to pad the byte array with zeros.
+func BigToBytes(num *big.Int, base int) []byte {
+	ret := make([]byte, base/8)
+
+	if len(num.Bytes()) > base/8 {
+		return num.Bytes()
+	}
+
+	return append(ret[:len(ret)-len(num.Bytes())], num.Bytes()...)
+}
+
+// Big copy
+//
+// Creates a copy of the given big integer
+func BigCopy(src *big.Int) *big.Int {
+	return new(big.Int).Set(src)
+}
+
+// Big max
+//
+// Returns the maximum size big integer
+func BigMax(x, y *big.Int) *big.Int {
+	if x.Cmp(y) <= 0 {
+		return y
+	}
+
+	return x
+}
+
+// Big min
+//
+// Returns the minimum size big integer
+func BigMin(x, y *big.Int) *big.Int {
+	if x.Cmp(y) >= 0 {
+		return y
+	}
+
+	return x
+}
diff --git a/ethutil/big_test.go b/ethutil/big_test.go
new file mode 100644
index 000000000..bf3c96c6d
--- /dev/null
+++ b/ethutil/big_test.go
@@ -0,0 +1,73 @@
+package ethutil
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestMisc(t *testing.T) {
+	a := Big("10")
+	b := Big("57896044618658097711785492504343953926634992332820282019728792003956564819968")
+	c := []byte{1, 2, 3, 4}
+	z := BitTest(a, 1)
+
+	if z != true {
+		t.Error("Expected true got", z)
+	}
+
+	U256(a)
+	S256(a)
+
+	U256(b)
+	S256(b)
+
+	BigD(c)
+}
+
+func TestBigMax(t *testing.T) {
+	a := Big("10")
+	b := Big("5")
+
+	max1 := BigMax(a, b)
+	if max1 != a {
+		t.Errorf("Expected %d got %d", a, max1)
+	}
+
+	max2 := BigMax(b, a)
+	if max2 != a {
+		t.Errorf("Expected %d got %d", a, max2)
+	}
+}
+
+func TestBigMin(t *testing.T) {
+	a := Big("10")
+	b := Big("5")
+
+	min1 := BigMin(a, b)
+	if min1 != b {
+		t.Errorf("Expected %d got %d", b, min1)
+	}
+
+	min2 := BigMin(b, a)
+	if min2 != b {
+		t.Errorf("Expected %d got %d", b, min2)
+	}
+}
+
+func TestBigCopy(t *testing.T) {
+	a := Big("10")
+	b := BigCopy(a)
+	c := Big("1000000000000")
+	y := BigToBytes(b, 16)
+	ybytes := []byte{0, 10}
+	z := BigToBytes(c, 16)
+	zbytes := []byte{232, 212, 165, 16, 0}
+
+	if bytes.Compare(y, ybytes) != 0 {
+		t.Error("Got", ybytes)
+	}
+
+	if bytes.Compare(z, zbytes) != 0 {
+		t.Error("Got", zbytes)
+	}
+}
diff --git a/ethutil/bytes.go b/ethutil/bytes.go
new file mode 100644
index 000000000..bd294f28a
--- /dev/null
+++ b/ethutil/bytes.go
@@ -0,0 +1,234 @@
+package ethutil
+
+import (
+	"bytes"
+	"encoding/binary"
+	"encoding/hex"
+	"fmt"
+	"math/big"
+	"strings"
+)
+
+type Bytes []byte
+
+func (self Bytes) String() string {
+	return string(self)
+}
+
+func DeleteFromByteSlice(s [][]byte, hash []byte) [][]byte {
+	for i, h := range s {
+		if bytes.Compare(h, hash) == 0 {
+			return append(s[:i:i], s[i+1:]...)
+		}
+	}
+
+	return s
+}
+
+// Number to bytes
+//
+// Returns the number in bytes with the specified base
+func NumberToBytes(num interface{}, bits int) []byte {
+	buf := new(bytes.Buffer)
+	err := binary.Write(buf, binary.BigEndian, num)
+	if err != nil {
+		fmt.Println("NumberToBytes failed:", err)
+	}
+
+	return buf.Bytes()[buf.Len()-(bits/8):]
+}
+
+// Bytes to number
+//
+// Attempts to cast a byte slice to a unsigned integer
+func BytesToNumber(b []byte) uint64 {
+	var number uint64
+
+	// Make sure the buffer is 64bits
+	data := make([]byte, 8)
+	data = append(data[:len(b)], b...)
+
+	buf := bytes.NewReader(data)
+	err := binary.Read(buf, binary.BigEndian, &number)
+	if err != nil {
+		fmt.Println("BytesToNumber failed:", err)
+	}
+
+	return number
+}
+
+// Read variable int
+//
+// Read a variable length number in big endian byte order
+func ReadVarInt(buff []byte) (ret uint64) {
+	switch l := len(buff); {
+	case l > 4:
+		d := LeftPadBytes(buff, 8)
+		binary.Read(bytes.NewReader(d), binary.BigEndian, &ret)
+	case l > 2:
+		var num uint32
+		d := LeftPadBytes(buff, 4)
+		binary.Read(bytes.NewReader(d), binary.BigEndian, &num)
+		ret = uint64(num)
+	case l > 1:
+		var num uint16
+		d := LeftPadBytes(buff, 2)
+		binary.Read(bytes.NewReader(d), binary.BigEndian, &num)
+		ret = uint64(num)
+	default:
+		var num uint8
+		binary.Read(bytes.NewReader(buff), binary.BigEndian, &num)
+		ret = uint64(num)
+	}
+
+	return
+}
+
+// Binary length
+//
+// Returns the true binary length of the given number
+func BinaryLength(num int) int {
+	if num == 0 {
+		return 0
+	}
+
+	return 1 + BinaryLength(num>>8)
+}
+
+// Copy bytes
+//
+// Returns an exact copy of the provided bytes
+func CopyBytes(b []byte) (copiedBytes []byte) {
+	copiedBytes = make([]byte, len(b))
+	copy(copiedBytes, b)
+
+	return
+}
+
+func IsHex(str string) bool {
+	l := len(str)
+	return l >= 4 && l%2 == 0 && str[0:2] == "0x"
+}
+
+func Bytes2Hex(d []byte) string {
+	return hex.EncodeToString(d)
+}
+
+func Hex2Bytes(str string) []byte {
+	h, _ := hex.DecodeString(str)
+
+	return h
+}
+
+func StringToByteFunc(str string, cb func(str string) []byte) (ret []byte) {
+	if len(str) > 1 && str[0:2] == "0x" && !strings.Contains(str, "\n") {
+		ret = Hex2Bytes(str[2:])
+	} else {
+		ret = cb(str)
+	}
+
+	return
+}
+
+func FormatData(data string) []byte {
+	if len(data) == 0 {
+		return nil
+	}
+	// Simple stupid
+	d := new(big.Int)
+	if data[0:1] == "\"" && data[len(data)-1:] == "\"" {
+		return RightPadBytes([]byte(data[1:len(data)-1]), 32)
+	} else if len(data) > 1 && data[:2] == "0x" {
+		d.SetBytes(Hex2Bytes(data[2:]))
+	} else {
+		d.SetString(data, 0)
+	}
+
+	return BigToBytes(d, 256)
+}
+
+func ParseData(data ...interface{}) (ret []byte) {
+	for _, item := range data {
+		switch t := item.(type) {
+		case string:
+			var str []byte
+			if IsHex(t) {
+				str = Hex2Bytes(t[2:])
+			} else {
+				str = []byte(t)
+			}
+
+			ret = append(ret, RightPadBytes(str, 32)...)
+		case []byte:
+			ret = append(ret, LeftPadBytes(t, 32)...)
+		}
+	}
+
+	return
+}
+
+func RightPadBytes(slice []byte, l int) []byte {
+	if l < len(slice) {
+		return slice
+	}
+
+	padded := make([]byte, l)
+	copy(padded[0:len(slice)], slice)
+
+	return padded
+}
+
+func LeftPadBytes(slice []byte, l int) []byte {
+	if l < len(slice) {
+		return slice
+	}
+
+	padded := make([]byte, l)
+	copy(padded[l-len(slice):], slice)
+
+	return padded
+}
+
+func LeftPadString(str string, l int) string {
+	if l < len(str) {
+		return str
+	}
+
+	zeros := Bytes2Hex(make([]byte, (l-len(str))/2))
+
+	return zeros + str
+
+}
+
+func RightPadString(str string, l int) string {
+	if l < len(str) {
+		return str
+	}
+
+	zeros := Bytes2Hex(make([]byte, (l-len(str))/2))
+
+	return str + zeros
+
+}
+
+func Address(slice []byte) (addr []byte) {
+	if len(slice) < 20 {
+		addr = LeftPadBytes(slice, 20)
+	} else if len(slice) > 20 {
+		addr = slice[len(slice)-20:]
+	} else {
+		addr = slice
+	}
+
+	addr = CopyBytes(addr)
+
+	return
+}
+
+func ByteSliceToInterface(slice [][]byte) (ret []interface{}) {
+	for _, i := range slice {
+		ret = append(ret, i)
+	}
+
+	return
+}
diff --git a/ethutil/bytes_test.go b/ethutil/bytes_test.go
new file mode 100644
index 000000000..179a8c7ef
--- /dev/null
+++ b/ethutil/bytes_test.go
@@ -0,0 +1,193 @@
+package ethutil
+
+import (
+	checker "gopkg.in/check.v1"
+)
+
+type BytesSuite struct{}
+
+var _ = checker.Suite(&BytesSuite{})
+
+func (s *BytesSuite) TestByteString(c *checker.C) {
+	var data Bytes
+	data = []byte{102, 111, 111}
+	exp := "foo"
+	res := data.String()
+
+	c.Assert(res, checker.Equals, exp)
+}
+
+/*
+func (s *BytesSuite) TestDeleteFromByteSlice(c *checker.C) {
+	data := []byte{1, 2, 3, 4}
+	slice := []byte{1, 2, 3, 4}
+	exp := []byte{1, 4}
+	res := DeleteFromByteSlice(data, slice)
+
+	c.Assert(res, checker.DeepEquals, exp)
+}
+
+*/
+func (s *BytesSuite) TestNumberToBytes(c *checker.C) {
+	// data1 := int(1)
+	// res1 := NumberToBytes(data1, 16)
+	// c.Check(res1, checker.Panics)
+
+	var data2 float64 = 3.141592653
+	exp2 := []byte{0xe9, 0x38}
+	res2 := NumberToBytes(data2, 16)
+	c.Assert(res2, checker.DeepEquals, exp2)
+}
+
+func (s *BytesSuite) TestBytesToNumber(c *checker.C) {
+	datasmall := []byte{0xe9, 0x38, 0xe9, 0x38}
+	datalarge := []byte{0xe9, 0x38, 0xe9, 0x38, 0xe9, 0x38, 0xe9, 0x38}
+
+	var expsmall uint64 = 0xe938e938
+	var explarge uint64 = 0x0
+
+	ressmall := BytesToNumber(datasmall)
+	reslarge := BytesToNumber(datalarge)
+
+	c.Assert(ressmall, checker.Equals, expsmall)
+	c.Assert(reslarge, checker.Equals, explarge)
+
+}
+
+func (s *BytesSuite) TestReadVarInt(c *checker.C) {
+	data8 := []byte{1, 2, 3, 4, 5, 6, 7, 8}
+	data4 := []byte{1, 2, 3, 4}
+	data2 := []byte{1, 2}
+	data1 := []byte{1}
+
+	exp8 := uint64(72623859790382856)
+	exp4 := uint64(16909060)
+	exp2 := uint64(258)
+	exp1 := uint64(1)
+
+	res8 := ReadVarInt(data8)
+	res4 := ReadVarInt(data4)
+	res2 := ReadVarInt(data2)
+	res1 := ReadVarInt(data1)
+
+	c.Assert(res8, checker.Equals, exp8)
+	c.Assert(res4, checker.Equals, exp4)
+	c.Assert(res2, checker.Equals, exp2)
+	c.Assert(res1, checker.Equals, exp1)
+}
+
+func (s *BytesSuite) TestBinaryLength(c *checker.C) {
+	data1 := 0
+	data2 := 920987656789
+
+	exp1 := 0
+	exp2 := 5
+
+	res1 := BinaryLength(data1)
+	res2 := BinaryLength(data2)
+
+	c.Assert(res1, checker.Equals, exp1)
+	c.Assert(res2, checker.Equals, exp2)
+}
+
+func (s *BytesSuite) TestCopyBytes(c *checker.C) {
+	data1 := []byte{1, 2, 3, 4}
+	exp1 := []byte{1, 2, 3, 4}
+	res1 := CopyBytes(data1)
+	c.Assert(res1, checker.DeepEquals, exp1)
+}
+
+func (s *BytesSuite) TestIsHex(c *checker.C) {
+	data1 := "a9e67e"
+	exp1 := false
+	res1 := IsHex(data1)
+	c.Assert(res1, checker.DeepEquals, exp1)
+
+	data2 := "0xa9e67e00"
+	exp2 := true
+	res2 := IsHex(data2)
+	c.Assert(res2, checker.DeepEquals, exp2)
+
+}
+
+func (s *BytesSuite) TestParseDataString(c *checker.C) {
+	res1 := ParseData("hello", "world", "0x0106")
+	data := "68656c6c6f000000000000000000000000000000000000000000000000000000776f726c640000000000000000000000000000000000000000000000000000000106000000000000000000000000000000000000000000000000000000000000"
+	exp1 := Hex2Bytes(data)
+	c.Assert(res1, checker.DeepEquals, exp1)
+}
+
+func (s *BytesSuite) TestParseDataBytes(c *checker.C) {
+	data1 := []byte{232, 212, 165, 16, 0}
+	exp1 := []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 232, 212, 165, 16, 0}
+
+	res1 := ParseData(data1)
+	c.Assert(res1, checker.DeepEquals, exp1)
+
+}
+
+func (s *BytesSuite) TestLeftPadBytes(c *checker.C) {
+	val1 := []byte{1, 2, 3, 4}
+	exp1 := []byte{0, 0, 0, 0, 1, 2, 3, 4}
+
+	res1 := LeftPadBytes(val1, 8)
+	res2 := LeftPadBytes(val1, 2)
+
+	c.Assert(res1, checker.DeepEquals, exp1)
+	c.Assert(res2, checker.DeepEquals, val1)
+}
+
+func (s *BytesSuite) TestFormatData(c *checker.C) {
+	data1 := ""
+	data2 := "0xa9e67e00"
+	data3 := "a9e67e"
+	data4 := "\"a9e67e00\""
+
+	// exp1 := []byte{}
+	exp2 := []byte{00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 0xa9, 0xe6, 0x7e, 00}
+	exp3 := []byte{00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00}
+	exp4 := []byte{0x61, 0x39, 0x65, 0x36, 0x37, 0x65, 0x30, 0x30, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00}
+
+	res1 := FormatData(data1)
+	res2 := FormatData(data2)
+	res3 := FormatData(data3)
+	res4 := FormatData(data4)
+
+	c.Assert(res1, checker.IsNil)
+	c.Assert(res2, checker.DeepEquals, exp2)
+	c.Assert(res3, checker.DeepEquals, exp3)
+	c.Assert(res4, checker.DeepEquals, exp4)
+}
+
+func (s *BytesSuite) TestRightPadBytes(c *checker.C) {
+	val := []byte{1, 2, 3, 4}
+	exp := []byte{1, 2, 3, 4, 0, 0, 0, 0}
+
+	resstd := RightPadBytes(val, 8)
+	resshrt := RightPadBytes(val, 2)
+
+	c.Assert(resstd, checker.DeepEquals, exp)
+	c.Assert(resshrt, checker.DeepEquals, val)
+}
+
+func (s *BytesSuite) TestLeftPadString(c *checker.C) {
+	val := "test"
+	exp := "\x30\x30\x30\x30" + val
+
+	resstd := LeftPadString(val, 8)
+	resshrt := LeftPadString(val, 2)
+
+	c.Assert(resstd, checker.Equals, exp)
+	c.Assert(resshrt, checker.Equals, val)
+}
+
+func (s *BytesSuite) TestRightPadString(c *checker.C) {
+	val := "test"
+	exp := val + "\x30\x30\x30\x30"
+
+	resstd := RightPadString(val, 8)
+	resshrt := RightPadString(val, 2)
+
+	c.Assert(resstd, checker.Equals, exp)
+	c.Assert(resshrt, checker.Equals, val)
+}
diff --git a/ethutil/common.go b/ethutil/common.go
new file mode 100644
index 000000000..0a29cac6c
--- /dev/null
+++ b/ethutil/common.go
@@ -0,0 +1,87 @@
+package ethutil
+
+import (
+	"fmt"
+	"math/big"
+	"runtime"
+)
+
+func IsWindows() bool {
+	return runtime.GOOS == "windows"
+}
+
+func WindonizePath(path string) string {
+	if string(path[0]) == "/" && IsWindows() {
+		path = path[1:]
+	}
+	return path
+}
+
+// The different number of units
+var (
+	Douglas  = BigPow(10, 42)
+	Einstein = BigPow(10, 21)
+	Ether    = BigPow(10, 18)
+	Finney   = BigPow(10, 15)
+	Szabo    = BigPow(10, 12)
+	Shannon  = BigPow(10, 9)
+	Babbage  = BigPow(10, 6)
+	Ada      = BigPow(10, 3)
+	Wei      = big.NewInt(1)
+)
+
+//
+// Currency to string
+// Returns a string representing a human readable format
+func CurrencyToString(num *big.Int) string {
+	var (
+		fin   *big.Int = num
+		denom string   = "Wei"
+	)
+
+	switch {
+	case num.Cmp(Douglas) >= 0:
+		fin = new(big.Int).Div(num, Douglas)
+		denom = "Douglas"
+	case num.Cmp(Einstein) >= 0:
+		fin = new(big.Int).Div(num, Einstein)
+		denom = "Einstein"
+	case num.Cmp(Ether) >= 0:
+		fin = new(big.Int).Div(num, Ether)
+		denom = "Ether"
+	case num.Cmp(Finney) >= 0:
+		fin = new(big.Int).Div(num, Finney)
+		denom = "Finney"
+	case num.Cmp(Szabo) >= 0:
+		fin = new(big.Int).Div(num, Szabo)
+		denom = "Szabo"
+	case num.Cmp(Shannon) >= 0:
+		fin = new(big.Int).Div(num, Shannon)
+		denom = "Shannon"
+	case num.Cmp(Babbage) >= 0:
+		fin = new(big.Int).Div(num, Babbage)
+		denom = "Babbage"
+	case num.Cmp(Ada) >= 0:
+		fin = new(big.Int).Div(num, Ada)
+		denom = "Ada"
+	}
+
+	// TODO add comment clarifying expected behavior
+	if len(fin.String()) > 5 {
+		return fmt.Sprintf("%sE%d %s", fin.String()[0:5], len(fin.String())-5, denom)
+	}
+
+	return fmt.Sprintf("%v %s", fin, denom)
+}
+
+// Common big integers often used
+var (
+	Big1     = big.NewInt(1)
+	Big2     = big.NewInt(2)
+	Big3     = big.NewInt(3)
+	Big0     = big.NewInt(0)
+	BigTrue  = Big1
+	BigFalse = Big0
+	Big32    = big.NewInt(32)
+	Big256   = big.NewInt(0xff)
+)
diff --git a/ethutil/common_test.go b/ethutil/common_test.go
new file mode 100644
index 000000000..c2b6077e9
--- /dev/null
+++ b/ethutil/common_test.go
@@ -0,0 +1,68 @@
+package ethutil
+
+import (
+	"math/big"
+	"os"
+
+	checker "gopkg.in/check.v1"
+)
+
+type CommonSuite struct{}
+
+var _ = checker.Suite(&CommonSuite{})
+
+func (s *CommonSuite) TestOS(c *checker.C) {
+	expwin := (os.PathSeparator == '\\' && os.PathListSeparator == ';')
+	res := IsWindows()
+
+	if !expwin {
+		c.Assert(res, checker.Equals, expwin, checker.Commentf("IsWindows is", res, "but path is", os.PathSeparator))
+	} else {
+		c.Assert(res, checker.Not(checker.Equals), expwin, checker.Commentf("IsWindows is", res, "but path is", os.PathSeparator))
+	}
+}
+
+func (s *CommonSuite) TestWindonziePath(c *checker.C) {
+	iswindowspath := os.PathSeparator == '\\'
+	path := "/opt/eth/test/file.ext"
+	res := WindonizePath(path)
+	ressep := string(res[0])
+
+	if !iswindowspath {
+		c.Assert(ressep, checker.Equals, "/")
+	} else {
+		c.Assert(ressep, checker.Not(checker.Equals), "/")
+	}
+}
+
+func (s *CommonSuite) TestCommon(c *checker.C) {
+	douglas := CurrencyToString(BigPow(10, 43))
+	einstein := CurrencyToString(BigPow(10, 22))
+	ether := CurrencyToString(BigPow(10, 19))
+	finney := CurrencyToString(BigPow(10, 16))
+	szabo := CurrencyToString(BigPow(10, 13))
+	shannon := CurrencyToString(BigPow(10, 10))
+	babbage := CurrencyToString(BigPow(10, 7))
+	ada := CurrencyToString(BigPow(10, 4))
+	wei := CurrencyToString(big.NewInt(10))
+
+	c.Assert(douglas, checker.Equals, "10 Douglas")
+	c.Assert(einstein, checker.Equals, "10 Einstein")
+	c.Assert(ether, checker.Equals, "10 Ether")
+	c.Assert(finney, checker.Equals, "10 Finney")
+	c.Assert(szabo, checker.Equals, "10 Szabo")
+	c.Assert(shannon, checker.Equals, "10 Shannon")
+	c.Assert(babbage, checker.Equals, "10 Babbage")
+	c.Assert(ada, checker.Equals, "10 Ada")
+	c.Assert(wei, checker.Equals, "10 Wei")
+}
+
+func (s *CommonSuite) TestLarge(c *checker.C) {
+	douglaslarge := CurrencyToString(BigPow(100000000, 43))
+	adalarge := CurrencyToString(BigPow(100000000, 4))
+	weilarge := CurrencyToString(big.NewInt(100000000))
+
+	c.Assert(douglaslarge, checker.Equals, "10000E298 Douglas")
+	c.Assert(adalarge, checker.Equals, "10000E7 Einstein")
+	c.Assert(weilarge, checker.Equals, "100 Babbage")
+}
diff --git a/ethutil/config.go b/ethutil/config.go
new file mode 100644
index 000000000..ccc7714d0
--- /dev/null
+++ b/ethutil/config.go
@@ -0,0 +1,72 @@
+package ethutil
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/rakyll/globalconf"
+)
+
+// Config struct
+type ConfigManager struct {
+	Db Database
+
+	ExecPath string
+	Debug    bool
+	Diff     bool
+	DiffType string
+	Paranoia bool
+	VmType   int
+
+	conf *globalconf.GlobalConf
+}
+
+var Config *ConfigManager
+
+// Read config
+//
+// Initialize Config from Config File
+func ReadConfig(ConfigFile string, Datadir string, EnvPrefix string) *ConfigManager {
+	if Config == nil {
+		// create ConfigFile if does not exist, otherwise globalconf panic when trying to persist flags
+		if !FileExist(ConfigFile) {
+			fmt.Printf("config file '%s' doesn't exist, creating it\n", ConfigFile)
+			os.Create(ConfigFile)
+		}
+		g, err := globalconf.NewWithOptions(&globalconf.Options{
+			Filename:  ConfigFile,
+			EnvPrefix: EnvPrefix,
+		})
+		if err != nil {
+			fmt.Println(err)
+		} else {
+			g.ParseAll()
+		}
+		Config = &ConfigManager{ExecPath: Datadir, Debug: true, conf: g, Paranoia: true}
+	}
+	return Config
+}
+
+// provides persistence for flags
+func (c *ConfigManager) Save(key string, value interface{}) {
+	f := &flag.Flag{Name: key, Value: newConfValue(value)}
+	c.conf.Set("", f)
+}
+
+func (c *ConfigManager) Delete(key string) {
+	c.conf.Delete("", key)
+}
+
+// private type implementing flag.Value
+type confValue struct {
+	value string
+}
+
+// generic constructor to allow persising non-string values directly
+func newConfValue(value interface{}) *confValue {
+	return &confValue{fmt.Sprintf("%v", value)}
+}
+
+func (self confValue) String() string     { return self.value }
+func (self confValue) Set(s string) error { self.value = s; return nil }
diff --git a/ethutil/db.go b/ethutil/db.go
new file mode 100644
index 000000000..e02a80fca
--- /dev/null
+++ b/ethutil/db.go
@@ -0,0 +1,12 @@
+package ethutil
+
+// Database interface
+type Database interface {
+	Put(key []byte, value []byte)
+	Get(key []byte) ([]byte, error)
+	//GetKeys() []*Key
+	Delete(key []byte) error
+	LastKnownTD() []byte
+	Close()
+	Print()
+}
diff --git a/ethutil/list.go b/ethutil/list.go
new file mode 100644
index 000000000..db276f1e3
--- /dev/null
+++ b/ethutil/list.go
@@ -0,0 +1,81 @@
+package ethutil
+
+import (
+	"encoding/json"
+	"reflect"
+	"sync"
+)
+
+// The list type is an anonymous slice handler which can be used
+// for containing any slice type to use in an environment which
+// does not support slice types (e.g., JavaScript, QML)
+type List struct {
+	mut    sync.Mutex
+	val    interface{}
+	list   reflect.Value
+	Length int
+}
+
+// Initialise a new list. Panics if non-slice type is given.
+func NewList(t interface{}) *List {
+	list := reflect.ValueOf(t)
+	if list.Kind() != reflect.Slice {
+		panic("list container initialized with a non-slice type")
+	}
+
+	return &List{sync.Mutex{}, t, list, list.Len()}
+}
+
+func EmptyList() *List {
+	return NewList([]interface{}{})
+}
+
+// Get N element from the embedded slice. Returns nil if OOB.
+func (self *List) Get(i int) interface{} {
+	if self.list.Len() > i {
+		self.mut.Lock()
+		defer self.mut.Unlock()
+
+		i := self.list.Index(i).Interface()
+
+		return i
+	}
+
+	return nil
+}
+
+func (self *List) GetAsJson(i int) interface{} {
+	e := self.Get(i)
+
+	r, _ := json.Marshal(e)
+
+	return string(r)
+}
+
+// Appends value at the end of the slice. Panics when incompatible value
+// is given.
+func (self *List) Append(v interface{}) {
+	self.mut.Lock()
+	defer self.mut.Unlock()
+
+	self.list = reflect.Append(self.list, reflect.ValueOf(v))
+	self.Length = self.list.Len()
+}
+
+// Returns the underlying slice as interface.
+func (self *List) Interface() interface{} {
+	return self.list.Interface()
+}
+
+// For JavaScript <3
+func (self *List) ToJSON() string {
+	// make(T, 0) != nil
+	list := make([]interface{}, 0)
+	for i := 0; i < self.Length; i++ {
+		list = append(list, self.Get(i))
+	}
+
+	data, _ := json.Marshal(list)
+
+	return string(data)
+}
diff --git a/ethutil/main_test.go b/ethutil/main_test.go
new file mode 100644
index 000000000..fd4278ce7
--- /dev/null
+++ b/ethutil/main_test.go
@@ -0,0 +1,9 @@
+package ethutil
+
+import (
+	"testing"
+
+	checker "gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) { checker.TestingT(t) }
diff --git a/ethutil/package.go b/ethutil/package.go
new file mode 100644
index 000000000..e5df989d2
--- /dev/null
+++ b/ethutil/package.go
@@ -0,0 +1,123 @@
+package ethutil
+
+import (
+	"archive/zip"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"strings"
+)
+
+// Manifest object
+//
+// The manifest object holds all the relevant information supplied with the
+// the manifest specified in the package
+type Manifest struct {
+	Entry         string
+	Height, Width int
+}
+
+// External package
+//
+// External package contains the main html file and manifest
+type ExtPackage struct {
+	EntryHtml string
+	Manifest  *Manifest
+}
+
+// Read file
+//
+// Read a given compressed file and returns the read bytes.
+// Returns an error otherwise
+func ReadFile(f *zip.File) ([]byte, error) {
+	rc, err := f.Open()
+	if err != nil {
+		return nil, err
+	}
+	defer rc.Close()
+
+	content, err := ioutil.ReadAll(rc)
+	if err != nil {
+		return nil, err
+	}
+
+	return content, nil
+}
+
+// Reads manifest
+//
+// Reads and returns a manifest object. Returns error otherwise
+func ReadManifest(m []byte) (*Manifest, error) {
+	var manifest Manifest
+
+	dec := json.NewDecoder(strings.NewReader(string(m)))
+	if err := dec.Decode(&manifest); err == io.EOF {
+	} else if err != nil {
+		return nil, err
+	}
+
+	return &manifest, nil
+}
+
+// Find file in archive
+//
+// Returns the index of the given file name if it exists. -1 if file not found
+func FindFileInArchive(fn string, files []*zip.File) (index int) {
+	index = -1
+	// Find the manifest first
+	for i, f := range files {
+		if f.Name == fn {
+			index = i
+		}
+	}
+
+	return
+}
+
+// Open package
+//
+// Opens a prepared ethereum package
+// Reads the manifest file and determines file contents and returns and
+// the external package.
+func OpenPackage(fn string) (*ExtPackage, error) {
+	r, err := zip.OpenReader(fn)
+	if err != nil {
+		return nil, err
+	}
+	defer r.Close()
+
+	manifestIndex := FindFileInArchive("manifest.json", r.File)
+
+	if manifestIndex < 0 {
+		return nil, fmt.Errorf("No manifest file found in archive")
+	}
+
+	f, err := ReadFile(r.File[manifestIndex])
+	if err != nil {
+		return nil, err
+	}
+
+	manifest, err := ReadManifest(f)
+	if err != nil {
+		return nil, err
+	}
+
+	if manifest.Entry == "" {
+		return nil, fmt.Errorf("Entry file specified but appears to be empty: %s", manifest.Entry)
+	}
+
+	entryIndex := FindFileInArchive(manifest.Entry, r.File)
+	if entryIndex < 0 {
+		return nil, fmt.Errorf("Entry file not found: '%s'", manifest.Entry)
+	}
+
+	f, err = ReadFile(r.File[entryIndex])
+	if err != nil {
+		return nil, err
+	}
+
+	extPackage := &ExtPackage{string(f), manifest}
+
+	return extPackage, nil
+}
diff --git a/ethutil/path.go b/ethutil/path.go
new file mode 100644
index 000000000..cfbc38950
--- /dev/null
+++ b/ethutil/path.go
@@ -0,0 +1,60 @@
+package ethutil
+
+import (
+	"io/ioutil"
+	"os"
+	"os/user"
+	"strings"
+)
+
+func ExpandHomePath(p string) (path string) {
+	path = p
+
+	// Check in case of paths like "/something/~/something/"
+	if path[:2] == "~/" {
+		usr, _ := user.Current()
+		dir := usr.HomeDir
+
+		path = strings.Replace(p, "~", dir, 1)
+	}
+
+	return
+}
+
+func FileExist(filePath string) bool {
+	_, err := os.Stat(filePath)
+	if err != nil && os.IsNotExist(err) {
+		return false
+	}
+
+	return true
+}
+
+func ReadAllFile(filePath string) (string, error) {
+	file, err := os.Open(filePath)
+	if err != nil {
+		return "", err
+	}
+
+	data, err := ioutil.ReadAll(file)
+	if err != nil {
+		return "", err
+	}
+
+	return string(data), nil
+}
+
+func WriteFile(filePath string, content []byte) error {
+	fh, err := os.OpenFile(filePath, os.O_TRUNC|os.O_RDWR|os.O_CREATE, os.ModePerm)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+
+	_, err = fh.Write(content)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/ethutil/path_test.go b/ethutil/path_test.go
new file mode 100644
index 000000000..908c94ee7
--- /dev/null
+++ b/ethutil/path_test.go
@@ -0,0 +1,51 @@
+package ethutil
+
+import (
+	// "os"
+	"testing"
+)
+
+func TestGoodFile(t *testing.T) {
+	goodpath := "~/goethereumtest.pass"
+	path := ExpandHomePath(goodpath)
+	contentstring := "3.14159265358979323846"
+
+	err := WriteFile(path, []byte(contentstring))
+	if err != nil {
+		t.Error("Could not write file")
+	}
+
+	if !FileExist(path) {
+		t.Error("File not found at", path)
+	}
+
+	v, err := ReadAllFile(path)
+	if err != nil {
+		t.Error("Could not read file", path)
+	}
+	if v != contentstring {
+		t.Error("Expected", contentstring, "Got", v)
+	}
+
+}
+
+func TestBadFile(t *testing.T) {
+	badpath := "/this/path/should/not/exist/goethereumtest.fail"
+	path := ExpandHomePath(badpath)
+	contentstring := "3.14159265358979323846"
+
+	err := WriteFile(path, []byte(contentstring))
+	if err == nil {
+		t.Error("Wrote file, but should not be able to", path)
+	}
+
+	if FileExist(path) {
+		t.Error("Found file, but should not be able to", path)
+	}
+
+	v, err := ReadAllFile(path)
+	if err == nil {
+		t.Error("Read file, but should not be able to", v)
+	}
+
+}
diff --git a/ethutil/rand.go b/ethutil/rand.go
new file mode 100644
index 000000000..91dafec7e
--- /dev/null
+++ b/ethutil/rand.go
@@ -0,0 +1,24 @@
+package ethutil
+
+import (
+	"crypto/rand"
+	"encoding/binary"
+	"io"
+)
+
+func randomUint64(r io.Reader) (uint64, error) {
+	b := make([]byte, 8)
+	n, err := r.Read(b)
+	if n != len(b) {
+		return 0, io.ErrShortBuffer
+	}
+	if err != nil {
+		return 0, err
+	}
+	return binary.BigEndian.Uint64(b), nil
+}
+
+// RandomUint64 returns a cryptographically random uint64 value.
+func RandomUint64() (uint64, error) {
+	return randomUint64(rand.Reader)
+}
diff --git a/ethutil/rand_test.go b/ethutil/rand_test.go
new file mode 100644
index 000000000..c12698538
--- /dev/null
+++ b/ethutil/rand_test.go
@@ -0,0 +1,17 @@
+package ethutil
+
+import (
+	checker "gopkg.in/check.v1"
+)
+
+type RandomSuite struct{}
+
+var _ = checker.Suite(&RandomSuite{})
+
+func (s *RandomSuite) TestRandomUint64(c *checker.C) {
+	res1, _ := RandomUint64()
+	res2, _ := RandomUint64()
+	c.Assert(res1, checker.NotNil)
+	c.Assert(res2, checker.NotNil)
+	c.Assert(res1, checker.Not(checker.Equals), res2)
+}
diff --git a/ethutil/rlp.go b/ethutil/rlp.go
new file mode 100644
index 000000000..1bc1a58a7
--- /dev/null
+++ b/ethutil/rlp.go
@@ -0,0 +1,276 @@
+package ethutil
+
+import (
+	"bytes"
+	"fmt"
+	"math/big"
+	"reflect"
+)
+
+type RlpEncode interface {
+	RlpEncode() []byte
+}
+
+type RlpEncodeDecode interface {
+	RlpEncode
+	RlpValue() []interface{}
+}
+
+type RlpEncodable interface {
+	RlpData() interface{}
+}
+
+func Rlp(encoder RlpEncode) []byte {
+	return encoder.RlpEncode()
+}
+
+type RlpEncoder struct {
+	rlpData []byte
+}
+
+func NewRlpEncoder() *RlpEncoder {
+	encoder := &RlpEncoder{}
+
+	return encoder
+}
+func (coder *RlpEncoder) EncodeData(rlpData interface{}) []byte {
+	return Encode(rlpData)
+}
+
+const (
+	RlpEmptyList = 0x80
+	RlpEmptyStr  = 0x40
+)
+
+const rlpEof = -1
+
+func Char(c []byte) int {
+	if len(c) > 0 {
+		return int(c[0])
+	}
+
+	return rlpEof
+}
+
+func DecodeWithReader(reader *bytes.Buffer) interface{} {
+	var slice []interface{}
+
+	// Read the next byte
+	char := Char(reader.Next(1))
+	switch {
+	case char <= 0x7f:
+		return char
+
+	case char <= 0xb7:
+		return reader.Next(int(char - 0x80))
+
+	case char <= 0xbf:
+		length := ReadVarInt(reader.Next(int(char - 0xb7)))
+
+		return reader.Next(int(length))
+
+	case char <= 0xf7:
+		length := int(char - 0xc0)
+		for i := 0; i < length; i++ {
+			obj := DecodeWithReader(reader)
+			slice = append(slice, obj)
+		}
+
+		return slice
+	case char <= 0xff:
+		length := ReadVarInt(reader.Next(int(char - 0xf7)))
+		for i := uint64(0); i < length; i++ {
+			obj := DecodeWithReader(reader)
+			slice = append(slice, obj)
+		}
+
+		return slice
+	default:
+		panic(fmt.Sprintf("byte not supported: %q", char))
+	}
+
+	return slice
+}
+
+var (
+	directRlp = big.NewInt(0x7f)
+	numberRlp = big.NewInt(0xb7)
+	zeroRlp   = big.NewInt(0x0)
+)
+
+func intlen(i int64) (length int) {
+	for i > 0 {
+		i = i >> 8
+		length++
+	}
+	return
+}
+
+func Encode(object interface{}) []byte {
+	var buff bytes.Buffer
+
+	if object != nil {
+		switch t := object.(type) {
+		case *Value:
+			buff.Write(Encode(t.Raw()))
+		case RlpEncodable:
+			buff.Write(Encode(t.RlpData()))
+		// Code dup :-/
+		case int:
+			buff.Write(Encode(big.NewInt(int64(t))))
+		case uint:
+			buff.Write(Encode(big.NewInt(int64(t))))
+		case int8:
+			buff.Write(Encode(big.NewInt(int64(t))))
+		case int16:
+			buff.Write(Encode(big.NewInt(int64(t))))
+		case int32:
+			buff.Write(Encode(big.NewInt(int64(t))))
+		case int64:
+			buff.Write(Encode(big.NewInt(t)))
+		case uint16:
+			buff.Write(Encode(big.NewInt(int64(t))))
+		case uint32:
+			buff.Write(Encode(big.NewInt(int64(t))))
+		case uint64:
+			buff.Write(Encode(big.NewInt(int64(t))))
+		case byte:
+			buff.Write(Encode(big.NewInt(int64(t))))
+		case *big.Int:
+			// Not sure how this is possible while we check for
+			if t == nil {
+				buff.WriteByte(0xc0)
+			} else {
+				buff.Write(Encode(t.Bytes()))
+			}
+		case Bytes:
+			buff.Write(Encode([]byte(t)))
+		case []byte:
+			if len(t) == 1 && t[0] <= 0x7f {
+				buff.Write(t)
+			} else if len(t) < 56 {
+				buff.WriteByte(byte(len(t) + 0x80))
+				buff.Write(t)
+			} else {
+				b := big.NewInt(int64(len(t)))
+				buff.WriteByte(byte(len(b.Bytes()) + 0xb7))
+				buff.Write(b.Bytes())
+				buff.Write(t)
+			}
+		case string:
+			buff.Write(Encode([]byte(t)))
+		case []interface{}:
+			// Inline function for writing the slice header
+			WriteSliceHeader := func(length int) {
+				if length < 56 {
+					buff.WriteByte(byte(length + 0xc0))
+				} else {
+					b := big.NewInt(int64(length))
+					buff.WriteByte(byte(len(b.Bytes()) + 0xf7))
+					buff.Write(b.Bytes())
+				}
+			}
+
+			var b bytes.Buffer
+			for _, val := range t {
+				b.Write(Encode(val))
+			}
+			WriteSliceHeader(len(b.Bytes()))
+			buff.Write(b.Bytes())
+		default:
+			// This is how it should have been from the start
+			// needs refactoring (@fjl)
+			v := reflect.ValueOf(t)
+			switch v.Kind() {
+			case reflect.Slice:
+				var b bytes.Buffer
+				for i := 0; i < v.Len(); i++ {
+					b.Write(Encode(v.Index(i).Interface()))
+				}
+
+				blen := b.Len()
+				if blen < 56 {
+					buff.WriteByte(byte(blen) + 0xc0)
+				} else {
+					ilen := byte(intlen(int64(blen)))
+					buff.WriteByte(ilen + 0xf7)
+					t := make([]byte, ilen)
+					for i := byte(0); i < ilen; i++ {
+						t[ilen-i-1] = byte(blen >> (i * 8))
+					}
+					buff.Write(t)
+				}
+				buff.ReadFrom(&b)
+			}
+		}
+	} else {
+		// Empty list for nil
+		buff.WriteByte(0xc0)
+	}
+
+	return buff.Bytes()
+}
+
+// TODO Use a bytes.Buffer instead of a raw byte slice.
+// Cleaner code, and use draining instead of seeking the next bytes to read
+func Decode(data []byte, pos uint64) (interface{}, uint64) {
+	var slice []interface{}
+	char := int(data[pos])
+	switch {
+	case char <= 0x7f:
+		return data[pos], pos + 1
+
+	case char <= 0xb7:
+		b := uint64(data[pos]) - 0x80
+
+		return data[pos+1 : pos+1+b], pos + 1 + b
+
+	case char <= 0xbf:
+		b := uint64(data[pos]) - 0xb7
+
+		b2 := ReadVarInt(data[pos+1 : pos+1+b])
+
+		return data[pos+1+b : pos+1+b+b2], pos + 1 + b + b2
+
+	case char <= 0xf7:
+		b := uint64(data[pos]) - 0xc0
+		prevPos := pos
+		pos++
+		for i := uint64(0); i < b; {
+			var obj interface{}
+
+			// Get the next item in the data list and append it
+			obj, prevPos = Decode(data, pos)
+			slice = append(slice, obj)
+
+			// Increment i by the amount bytes read in the previous
+			// read
+			i += (prevPos - pos)
+			pos = prevPos
+		}
+		return slice, pos
+
+	case char <= 0xff:
+		l := uint64(data[pos]) - 0xf7
+		b := ReadVarInt(data[pos+1 : pos+1+l])
+
+		pos = pos + l + 1
+
+		prevPos := b
+		for i := uint64(0); i < uint64(b); {
+			var obj interface{}
+
+			obj, prevPos = Decode(data, pos)
+			slice = append(slice, obj)
+
+			i += (prevPos - pos)
+			pos = prevPos
+		}
+		return slice, pos
+
+	default:
+		panic(fmt.Sprintf("byte not supported: %q", char))
+	}
+
+	return slice, 0
+}
diff --git a/ethutil/rlp_test.go b/ethutil/rlp_test.go
new file mode 100644
index 000000000..ff98d3269
--- /dev/null
+++ b/ethutil/rlp_test.go
@@ -0,0 +1,156 @@
+package ethutil
+
+import (
+	"bytes"
+	"math/big"
+	"reflect"
+	"testing"
+)
+
+func TestNonInterfaceSlice(t *testing.T) {
+	vala := []string{"value1", "value2", "value3"}
+	valb := []interface{}{"value1", "value2", "value3"}
+	resa := Encode(vala)
+	resb := Encode(valb)
+	if !bytes.Equal(resa, resb) {
+		t.Errorf("expected []string & []interface{} to be equal")
+	}
+}
+
+func TestRlpValueEncoding(t *testing.T) {
+	val := EmptyValue()
+	val.AppendList().Append(1).Append(2).Append(3)
+	val.Append("4").AppendList().Append(5)
+
+	res := val.Encode()
+	exp := Encode([]interface{}{[]interface{}{1, 2, 3}, "4", []interface{}{5}})
+	if bytes.Compare(res, exp) != 0 {
+		t.Errorf("expected %q, got %q", res, exp)
+	}
+}
+
+func TestValueSlice(t *testing.T) {
+	val := []interface{}{
+		"value1",
+		"valeu2",
+		"value3",
+	}
+
+	value := NewValue(val)
+	splitVal := value.SliceFrom(1)
+
+	if splitVal.Len() != 2 {
+		t.Error("SliceFrom: Expected len", 2, "got", splitVal.Len())
+	}
+
+	splitVal = value.SliceTo(2)
+	if splitVal.Len() != 2 {
+		t.Error("SliceTo: Expected len", 2, "got", splitVal.Len())
+	}
+
+	splitVal = value.SliceFromTo(1, 3)
+	if splitVal.Len() != 2 {
+		t.Error("SliceFromTo: Expected len", 2, "got", splitVal.Len())
+	}
+}
+
+func TestLargeData(t *testing.T) {
+	data := make([]byte, 100000)
+	enc := Encode(data)
+	value := NewValue(enc)
+	value.Decode()
+
+	if value.Len() != len(data) {
+		t.Error("Expected data to be", len(data), "got", value.Len())
+	}
+}
+
+func TestValue(t *testing.T) {
+	value := NewValueFromBytes([]byte("\xcd\x83dog\x83god\x83cat\x01"))
+	if value.Get(0).Str() != "dog" {
+		t.Errorf("expected '%v', got '%v'", value.Get(0).Str(), "dog")
+	}
+
+	if value.Get(3).Uint() != 1 {
+		t.Errorf("expected '%v', got '%v'", value.Get(3).Uint(), 1)
+	}
+}
+
+func TestEncode(t *testing.T) {
+	strRes := "\x83dog"
+	bytes := Encode("dog")
+
+	str := string(bytes)
+	if str != strRes {
+		t.Errorf("Expected %q, got %q", strRes, str)
+	}
+
+	sliceRes := "\xcc\x83dog\x83god\x83cat"
+	strs := []interface{}{"dog", "god", "cat"}
+	bytes = Encode(strs)
+	slice := string(bytes)
+	if slice != sliceRes {
+		t.Error("Expected %q, got %q", sliceRes, slice)
+	}
+
+	intRes := "\x82\x04\x00"
+	bytes = Encode(1024)
+	if string(bytes) != intRes {
+		t.Errorf("Expected %q, got %q", intRes, bytes)
+	}
+}
+
+func TestDecode(t *testing.T) {
+	single := []byte("\x01")
+	b, _ := Decode(single, 0)
+
+	if b.(uint8) != 1 {
+		t.Errorf("Expected 1, got %q", b)
+	}
+
+	str := []byte("\x83dog")
+	b, _ = Decode(str, 0)
+	if bytes.Compare(b.([]byte), []byte("dog")) != 0 {
+		t.Errorf("Expected dog, got %q", b)
+	}
+
+	slice := []byte("\xcc\x83dog\x83god\x83cat")
+	res := []interface{}{"dog", "god", "cat"}
+	b, _ = Decode(slice, 0)
+	if reflect.DeepEqual(b, res) {
+		t.Errorf("Expected %q, got %q", res, b)
+	}
+}
+
+func TestEncodeDecodeBigInt(t *testing.T) {
+	bigInt := big.NewInt(1391787038)
+	encoded := Encode(bigInt)
+
+	value := NewValueFromBytes(encoded)
+	if value.BigInt().Cmp(bigInt) != 0 {
+		t.Errorf("Expected %v, got %v", bigInt, value.BigInt())
+	}
+}
+
+func TestEncodeDecodeBytes(t *testing.T) {
+	b := NewValue([]interface{}{[]byte{1, 2, 3, 4, 5}, byte(6)})
+	val := NewValueFromBytes(b.Encode())
+	if !b.Cmp(val) {
+		t.Errorf("Expected %v, got %v", val, b)
+	}
+}
+
+func TestEncodeZero(t *testing.T) {
+	b := NewValue(0).Encode()
+	exp := []byte{0xc0}
+	if bytes.Compare(b, exp) == 0 {
+		t.Error("Expected", exp, "got", b)
+	}
+}
+
+func BenchmarkEncodeDecode(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		bytes := Encode([]interface{}{"dog", "god", "cat"})
+		Decode(bytes, 0)
+	}
+}
diff --git a/ethutil/script_unix.go b/ethutil/script_unix.go
new file mode 100644
index 000000000..9250dda57
--- /dev/null
+++ b/ethutil/script_unix.go
@@ -0,0 +1,19 @@
+// +build !windows
+
+package ethutil
+
+import "github.com/ethereum/serpent-go"
+
+// General compile function
+func Compile(script string, silent bool) (ret []byte, err error) {
+	if len(script) > 2 {
+		byteCode, err := serpent.Compile(script)
+		if err != nil {
+			return nil, err
+		}
+
+		return byteCode, nil
+	}
+
+	return nil, nil
+}
diff --git a/ethutil/script_windows.go b/ethutil/script_windows.go
new file mode 100644
index 000000000..1dedc5f60
--- /dev/null
+++ b/ethutil/script_windows.go
@@ -0,0 +1,12 @@
+// +build windows
+
+package ethutil
+
+// General compile function
+func Compile(script string, silent bool) (ret []byte, err error) {
+	if len(script) > 2 {
+		return nil, nil
+	}
+
+	return nil, nil
+}
diff --git a/ethutil/set.go b/ethutil/set.go
new file mode 100644
index 000000000..7955edac0
--- /dev/null
+++ b/ethutil/set.go
@@ -0,0 +1,36 @@
+package ethutil
+
+type Settable interface {
+	AsSet() UniqueSet
+}
+
+type Stringable interface {
+	String() string
+}
+
+type UniqueSet map[string]struct{}
+
+func NewSet(v ...Stringable) UniqueSet {
+	set := make(UniqueSet)
+	for _, val := range v {
+		set.Insert(val)
+	}
+
+	return set
+}
+
+func (self UniqueSet) Insert(k Stringable) UniqueSet {
+	self[k.String()] = struct{}{}
+
+	return self
+}
+
+func (self UniqueSet) Include(k Stringable) bool {
+	_, ok := self[k.String()]
+
+	return ok
+}
+
+func Set(s Settable) UniqueSet {
+	return s.AsSet()
+}
diff --git a/ethutil/size.go b/ethutil/size.go
new file mode 100644
index 000000000..b4426465e
--- /dev/null
+++ b/ethutil/size.go
@@ -0,0 +1,15 @@
+package ethutil
+
+import "fmt"
+
+type StorageSize float64
+
+func (self StorageSize) String() string {
+	if self > 1000000 {
+		return fmt.Sprintf("%.2f mB", self/1000000)
+	} else if self > 1000 {
+		return fmt.Sprintf("%.2f kB", self/1000)
+	} else {
+		return fmt.Sprintf("%.2f B", self)
+	}
+}
diff --git a/ethutil/size_test.go b/ethutil/size_test.go
new file mode 100644
index 000000000..e0f28abc5
--- /dev/null
+++ b/ethutil/size_test.go
@@ -0,0 +1,23 @@
+package ethutil
+
+import (
+	checker "gopkg.in/check.v1"
+)
+
+type SizeSuite struct{}
+
+var _ = checker.Suite(&SizeSuite{})
+
+func (s *SizeSuite) TestStorageSizeString(c *checker.C) {
+	data1 := 2381273
+	data2 := 2192
+	data3 := 12
+
+	exp1 := "2.38 mB"
+	exp2 := "2.19 kB"
+	exp3 := "12.00 B"
+
+	c.Assert(StorageSize(data1).String(), checker.Equals, exp1)
+	c.Assert(StorageSize(data2).String(), checker.Equals, exp2)
+	c.Assert(StorageSize(data3).String(), checker.Equals, exp3)
+}
diff --git a/ethutil/value.go b/ethutil/value.go
new file mode 100644
index 000000000..7d4a7d98c
--- /dev/null
+++ b/ethutil/value.go
@@ -0,0 +1,401 @@
+package ethutil
+
+import (
+	"bytes"
+	"fmt"
+	"math/big"
+	"reflect"
+	"strconv"
+)
+
+// Data values are returned by the rlp decoder. The data values represents
+// one item within the rlp data structure. It's responsible for all the casting
+// It always returns something valid
+type Value struct {
+	Val  interface{}
+	kind reflect.Value
+}
+
+func (val *Value) String() string {
+	return fmt.Sprintf("%x", val.Val)
+}
+
+func NewValue(val interface{}) *Value {
+	t := val
+	if v, ok := val.(*Value); ok {
+		t = v.Val
+	}
+
+	return &Value{Val: t}
+}
+
+func (val *Value) Type() reflect.Kind {
+	return reflect.TypeOf(val.Val).Kind()
+}
+
+func (val *Value) IsNil() bool {
+	return val.Val == nil
+}
+
+func (val *Value) Len() int {
+	//return val.kind.Len()
+	if data, ok := val.Val.([]interface{}); ok {
+		return len(data)
+	}
+
+	return len(val.Bytes())
+}
+
+func (val *Value) Raw() interface{} {
+	return val.Val
+}
+
+func (val *Value) Interface() interface{} {
+	return val.Val
+}
+
+func (val *Value) Uint() uint64 {
+	if Val, ok := val.Val.(uint8); ok {
+		return uint64(Val)
+	} else if Val, ok := val.Val.(uint16); ok {
+		return uint64(Val)
+	} else if Val, ok := val.Val.(uint32); ok {
+		return uint64(Val)
+	} else if Val, ok := val.Val.(uint64); ok {
+		return Val
+	} else if Val, ok := val.Val.(float32); ok {
+		return uint64(Val)
+	} else if Val, ok := val.Val.(float64); ok {
+		return uint64(Val)
+	} else if Val, ok := val.Val.(int); ok {
+		return uint64(Val)
+	} else if Val, ok := val.Val.(uint); ok {
+		return uint64(Val)
+	} else if Val, ok := val.Val.([]byte); ok {
+		return new(big.Int).SetBytes(Val).Uint64()
+	} else if Val, ok := val.Val.(*big.Int); ok {
+		return Val.Uint64()
+	}
+
+	return 0
+}
+
+func (val *Value) Int() int64 {
+	if Val, ok := val.Val.(int8); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.(int16); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.(int32); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.(int64); ok {
+		return Val
+	} else if Val, ok := val.Val.(int); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.(float32); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.(float64); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.([]byte); ok {
+		return new(big.Int).SetBytes(Val).Int64()
+	} else if Val, ok := val.Val.(*big.Int); ok {
+		return Val.Int64()
+	} else if Val, ok := val.Val.(string); ok {
+		n, _ := strconv.Atoi(Val)
+		return int64(n)
+	}
+
+	return 0
+}
+
+func (val *Value) Byte() byte {
+	if Val, ok := val.Val.(byte); ok {
+		return Val
+	}
+
+	return 0x0
+}
+
+func (val *Value) BigInt() *big.Int {
+	if a, ok := val.Val.([]byte); ok {
+		b := new(big.Int).SetBytes(a)
+
+		return b
+	} else if a, ok := val.Val.(*big.Int); ok {
+		return a
+	} else if a, ok := val.Val.(string); ok {
+		return Big(a)
+	} else {
+		return big.NewInt(int64(val.Uint()))
+	}
+
+	return big.NewInt(0)
+}
+
+func (val *Value) Str() string {
+	if a, ok := val.Val.([]byte); ok {
+		return string(a)
+	} else if a, ok := val.Val.(string); ok {
+		return a
+	} else if a, ok := val.Val.(byte); ok {
+		return string(a)
+	}
+
+	return ""
+}
+
+func (val *Value) Bytes() []byte {
+	if a, ok := val.Val.([]byte); ok {
+		return a
+	} else if s, ok := val.Val.(byte); ok {
+		return []byte{s}
+	} else if s, ok := val.Val.(string); ok {
+		return []byte(s)
+	} else if s, ok := val.Val.(*big.Int); ok {
+		return s.Bytes()
+	} else {
+		return big.NewInt(val.Int()).Bytes()
+	}
+
+	return []byte{}
+}
+
+func (val *Value) Err() error {
+	if err, ok := val.Val.(error); ok {
+		return err
+	}
+
+	return nil
+}
+
+func (val *Value) Slice() []interface{} {
+	if d, ok := val.Val.([]interface{}); ok {
+		return d
+	}
+
+	return []interface{}{}
+}
+
+func (val *Value) SliceFrom(from int) *Value {
+	slice := val.Slice()
+
+	return NewValue(slice[from:])
+}
+
+func (val *Value) SliceTo(to int) *Value {
+	slice := val.Slice()
+
+	return NewValue(slice[:to])
+}
+
+func (val *Value) SliceFromTo(from, to int) *Value {
+	slice := val.Slice()
+
+	return NewValue(slice[from:to])
+}
+
+// TODO More type checking methods
+func (val *Value) IsSlice() bool {
+	return val.Type() == reflect.Slice
+}
+
+func (val *Value) IsStr() bool {
+	return val.Type() == reflect.String
+}
+
+func (self *Value) IsErr() bool {
+	_, ok := self.Val.(error)
+	return ok
+}
+
+// Special list checking function. Something is considered
+// a list if it's of type []interface{}. The list is usually
+// used in conjunction with rlp decoded streams.
+func (val *Value) IsList() bool {
+	_, ok := val.Val.([]interface{})
+
+	return ok
+}
+
+func (val *Value) IsEmpty() bool {
+	return val.Val == nil || ((val.IsSlice() || val.IsStr()) && val.Len() == 0)
+}
+
+// Threat the value as a slice
+func (val *Value) Get(idx int) *Value {
+	if d, ok := val.Val.([]interface{}); ok {
+		// Guard for oob
+		if len(d) <= idx {
+			return NewValue(nil)
+		}
+
+		if idx < 0 {
+			return NewValue(nil)
+		}
+
+		return NewValue(d[idx])
+	}
+
+	// If this wasn't a slice you probably shouldn't be using this function
+	return NewValue(nil)
+}
+
+func (self *Value) Copy() *Value {
+	switch val := self.Val.(type) {
+	case *big.Int:
+		return NewValue(new(big.Int).Set(val))
+	case []byte:
+		return NewValue(CopyBytes(val))
+	default:
+		return NewValue(self.Val)
+	}
+
+	return nil
+}
+
+func (val *Value) Cmp(o *Value) bool {
+	return reflect.DeepEqual(val.Val, o.Val)
+}
+
+func (self *Value) DeepCmp(o *Value) bool {
+	return bytes.Compare(self.Bytes(), o.Bytes()) == 0
+}
+
+func (val *Value) Encode() []byte {
+	return Encode(val.Val)
+}
+
+// Assume that the data we have is encoded
+func (self *Value) Decode() {
+	v, _ := Decode(self.Bytes(), 0)
+	self.Val = v
+	//self.Val = DecodeWithReader(bytes.NewBuffer(self.Bytes()))
+}
+
+func NewValueFromBytes(data []byte) *Value {
+	if len(data) != 0 {
+		value := NewValue(data)
+		value.Decode()
+
+		return value
+	}
+
+	return NewValue(nil)
+}
+
+// Value setters
+func NewSliceValue(s interface{}) *Value {
+	list := EmptyValue()
+
+	if s != nil {
+		if slice, ok := s.([]interface{}); ok {
+			for _, val := range slice {
+				list.Append(val)
+			}
+		} else if slice, ok := s.([]string); ok {
+			for _, val := range slice {
+				list.Append(val)
+			}
+		}
+	}
+
+	return list
+}
+
+func EmptyValue() *Value {
+	return NewValue([]interface{}{})
+}
+
+func (val *Value) AppendList() *Value {
+	list := EmptyValue()
+	val.Val = append(val.Slice(), list)
+
+	return list
+}
+
+func (val *Value) Append(v interface{}) *Value {
+	val.Val = append(val.Slice(), v)
+
+	return val
+}
+
+const (
+	valOpAdd = iota
+	valOpDiv
+	valOpMul
+	valOpPow
+	valOpSub
+)
+
+// Math stuff
+func (self *Value) doOp(op int, other interface{}) *Value {
+	left := self.BigInt()
+	right := NewValue(other).BigInt()
+
+	switch op {
+	case valOpAdd:
+		self.Val = left.Add(left, right)
+	case valOpDiv:
+		self.Val = left.Div(left, right)
+	case valOpMul:
+		self.Val = left.Mul(left, right)
+	case valOpPow:
+		self.Val = left.Exp(left, right, Big0)
+	case valOpSub:
+		self.Val = left.Sub(left, right)
+	}
+
+	return self
+}
+
+func (self *Value) Add(other interface{}) *Value {
+	return self.doOp(valOpAdd, other)
+}
+
+func (self *Value) Sub(other interface{}) *Value {
+	return self.doOp(valOpSub, other)
+}
+
+func (self *Value) Div(other interface{}) *Value {
+	return self.doOp(valOpDiv, other)
+}
+
+func (self *Value) Mul(other interface{}) *Value {
+	return self.doOp(valOpMul, other)
+}
+
+func (self *Value) Pow(other interface{}) *Value {
+	return self.doOp(valOpPow, other)
+}
+
+type ValueIterator struct {
+	value        *Value
+	currentValue *Value
+	idx          int
+}
+
+func (val *Value) NewIterator() *ValueIterator {
+	return &ValueIterator{value: val}
+}
+
+func (it *ValueIterator) Len() int {
+	return it.value.Len()
+}
+
+func (it *ValueIterator) Next() bool {
+	if it.idx >= it.value.Len() {
+		return false
+	}
+
+	it.currentValue = it.value.Get(it.idx)
+	it.idx++
+
+	return true
+}
+
+func (it *ValueIterator) Value() *Value {
+	return it.currentValue
+}
+
+func (it *ValueIterator) Idx() int {
+	return it.idx - 1
+}
diff --git a/ethutil/value_test.go b/ethutil/value_test.go
new file mode 100644
index 000000000..861d35184
--- /dev/null
+++ b/ethutil/value_test.go
@@ -0,0 +1,70 @@
+package ethutil
+
+import (
+	"math/big"
+
+	checker "gopkg.in/check.v1"
+)
+
+type ValueSuite struct{}
+
+var _ = checker.Suite(&ValueSuite{})
+
+func (s *ValueSuite) TestValueCmp(c *checker.C) {
+	val1 := NewValue("hello")
+	val2 := NewValue("world")
+	c.Assert(val1.Cmp(val2), checker.Equals, false)
+
+	val3 := NewValue("hello")
+	val4 := NewValue("hello")
+	c.Assert(val3.Cmp(val4), checker.Equals, true)
+}
+
+func (s *ValueSuite) TestValueTypes(c *checker.C) {
+	str := NewValue("str")
+	num := NewValue(1)
+	inter := NewValue([]interface{}{1})
+	byt := NewValue([]byte{1, 2, 3, 4})
+	bigInt := NewValue(big.NewInt(10))
+
+	strExp := "str"
+	numExp := uint64(1)
+	interExp := []interface{}{1}
+	bytExp := []byte{1, 2, 3, 4}
+	bigExp := big.NewInt(10)
+
+	c.Assert(str.Str(), checker.Equals, strExp)
+	c.Assert(num.Uint(), checker.Equals, numExp)
+	c.Assert(NewValue(inter.Interface()).Cmp(NewValue(interExp)), checker.Equals, true)
+	c.Assert(byt.Bytes(), checker.DeepEquals, bytExp)
+	c.Assert(bigInt.BigInt(), checker.DeepEquals, bigExp)
+}
+
+func (s *ValueSuite) TestIterator(c *checker.C) {
+	value := NewValue([]interface{}{1, 2, 3})
+	iter := value.NewIterator()
+	values := []uint64{1, 2, 3}
+	i := 0
+	for iter.Next() {
+		c.Assert(values[i], checker.Equals, iter.Value().Uint())
+		i++
+	}
+}
+
+func (s *ValueSuite) TestMath(c *checker.C) {
+	data1 := NewValue(1)
+	data1.Add(1).Add(1)
+	exp1 := NewValue(3)
+	data2 := NewValue(2)
+	data2.Sub(1).Sub(1)
+	exp2 := NewValue(0)
+
+	c.Assert(data1.DeepCmp(exp1), checker.Equals, true)
+	c.Assert(data2.DeepCmp(exp2), checker.Equals, true)
+}
+
+func (s *ValueSuite) TestString(c *checker.C) {
+	data := "10"
+	exp := int64(10)
+	c.Assert(NewValue(data).Int(), checker.DeepEquals, exp)
+}
diff --git a/event/event.go b/event/event.go
new file mode 100644
index 000000000..540fbba65
--- /dev/null
+++ b/event/event.go
@@ -0,0 +1,183 @@
+// Package event implements an event multiplexer.
+package event
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"sync"
+)
+
+// Subscription is implemented by event subscriptions.
+type Subscription interface {
+	// Chan returns a channel that carries events.
+	// Implementations should return the same channel
+	// for any subsequent calls to Chan.
+	Chan() <-chan interface{}
+
+	// Unsubscribe stops delivery of events to a subscription.
+	// The event channel is closed.
+	// Unsubscribe can be called more than once.
+	Unsubscribe()
+}
+
+// A TypeMux dispatches events to registered receivers. Receivers can be
+// registered to handle events of certain type. Any operation
+// called after mux is stopped will return ErrMuxClosed.
+//
+// The zero value is ready to use.
+type TypeMux struct {
+	mutex   sync.RWMutex
+	subm    map[reflect.Type][]*muxsub
+	stopped bool
+}
+
+// ErrMuxClosed is returned when Posting on a closed TypeMux.
+var ErrMuxClosed = errors.New("event: mux closed")
+
+// Subscribe creates a subscription for events of the given types. The
+// subscription's channel is closed when it is unsubscribed
+// or the mux is closed.
+func (mux *TypeMux) Subscribe(types ...interface{}) Subscription {
+	sub := newsub(mux)
+	mux.mutex.Lock()
+	defer mux.mutex.Unlock()
+	if mux.stopped {
+		close(sub.postC)
+	} else {
+		if mux.subm == nil {
+			mux.subm = make(map[reflect.Type][]*muxsub)
+		}
+		for _, t := range types {
+			rtyp := reflect.TypeOf(t)
+			oldsubs := mux.subm[rtyp]
+			if find(oldsubs, sub) != -1 {
+				panic(fmt.Sprintf("event: duplicate type %s in Subscribe", rtyp))
+			}
+			subs := make([]*muxsub, len(oldsubs)+1)
+			copy(subs, oldsubs)
+			subs[len(oldsubs)] = sub
+			mux.subm[rtyp] = subs
+		}
+	}
+	return sub
+}
+
+// Post sends an event to all receivers registered for the given type.
+// It returns ErrMuxClosed if the mux has been stopped.
+func (mux *TypeMux) Post(ev interface{}) error {
+	rtyp := reflect.TypeOf(ev)
+	mux.mutex.RLock()
+	if mux.stopped {
+		mux.mutex.RUnlock()
+		return ErrMuxClosed
+	}
+	subs := mux.subm[rtyp]
+	mux.mutex.RUnlock()
+	for _, sub := range subs {
+		sub.deliver(ev)
+	}
+	return nil
+}
+
+// Stop closes a mux. The mux can no longer be used.
+// Future Post calls will fail with ErrMuxClosed.
+// Stop blocks until all current deliveries have finished.
+func (mux *TypeMux) Stop() {
+	mux.mutex.Lock()
+	for _, subs := range mux.subm {
+		for _, sub := range subs {
+			sub.closewait()
+		}
+	}
+	mux.subm = nil
+	mux.stopped = true
+	mux.mutex.Unlock()
+}
+
+func (mux *TypeMux) del(s *muxsub) {
+	mux.mutex.Lock()
+	for typ, subs := range mux.subm {
+		if pos := find(subs, s); pos >= 0 {
+			if len(subs) == 1 {
+				delete(mux.subm, typ)
+			} else {
+				mux.subm[typ] = posdelete(subs, pos)
+			}
+		}
+	}
+	s.mux.mutex.Unlock()
+}
+
+func find(slice []*muxsub, item *muxsub) int {
+	for i, v := range slice {
+		if v == item {
+			return i
+		}
+	}
+	return -1
+}
+
+func posdelete(slice []*muxsub, pos int) []*muxsub {
+	news := make([]*muxsub, len(slice)-1)
+	copy(news[:pos], slice[:pos])
+	copy(news[pos:], slice[pos+1:])
+	return news
+}
+
+type muxsub struct {
+	mux     *TypeMux
+	closeMu sync.Mutex
+	closing chan struct{}
+	closed  bool
+
+	// these two are the same channel. they are stored separately so
+	// postC can be set to nil without affecting the return value of
+	// Chan.
+	postMu sync.RWMutex
+	readC  <-chan interface{}
+	postC  chan<- interface{}
+}
+
+func newsub(mux *TypeMux) *muxsub {
+	c := make(chan interface{})
+	return &muxsub{
+		mux:     mux,
+		readC:   c,
+		postC:   c,
+		closing: make(chan struct{}),
+	}
+}
+
+func (s *muxsub) Chan() <-chan interface{} {
+	return s.readC
+}
+
+func (s *muxsub) Unsubscribe() {
+	s.mux.del(s)
+	s.closewait()
+}
+
+func (s *muxsub) closewait() {
+	s.closeMu.Lock()
+	defer s.closeMu.Unlock()
+	if s.closed {
+		return
+	}
+	close(s.closing)
+	s.closed = true
+
+	s.postMu.Lock()
+	close(s.postC)
+	s.postC = nil
+	s.postMu.Unlock()
+}
+
+func (s *muxsub) deliver(ev interface{}) {
+	s.postMu.RLock()
+	select {
+	case s.postC <- ev:
+	case <-s.closing:
+	}
+	s.postMu.RUnlock()
+}
diff --git a/event/event_test.go b/event/event_test.go
new file mode 100644
index 000000000..c7c0266c1
--- /dev/null
+++ b/event/event_test.go
@@ -0,0 +1,176 @@
+package event
+
+import (
+	"math/rand"
+	"sync"
+	"testing"
+	"time"
+)
+
+type testEvent int
+
+func TestSub(t *testing.T) {
+	mux := new(TypeMux)
+	defer mux.Stop()
+
+	sub := mux.Subscribe(testEvent(0))
+	go func() {
+		if err := mux.Post(testEvent(5)); err != nil {
+			t.Errorf("Post returned unexpected error: %v", err)
+		}
+	}()
+	ev := <-sub.Chan()
+
+	if ev.(testEvent) != testEvent(5) {
+		t.Errorf("Got %v (%T), expected event %v (%T)",
+			ev, ev, testEvent(5), testEvent(5))
+	}
+}
+
+func TestMuxErrorAfterStop(t *testing.T) {
+	mux := new(TypeMux)
+	mux.Stop()
+
+	sub := mux.Subscribe(testEvent(0))
+	if _, isopen := <-sub.Chan(); isopen {
+		t.Errorf("subscription channel was not closed")
+	}
+	if err := mux.Post(testEvent(0)); err != ErrMuxClosed {
+		t.Errorf("Post error mismatch, got: %s, expected: %s", err, ErrMuxClosed)
+	}
+}
+
+func TestUnsubscribeUnblockPost(t *testing.T) {
+	mux := new(TypeMux)
+	defer mux.Stop()
+
+	sub := mux.Subscribe(testEvent(0))
+	unblocked := make(chan bool)
+	go func() {
+		mux.Post(testEvent(5))
+		unblocked <- true
+	}()
+
+	select {
+	case <-unblocked:
+		t.Errorf("Post returned before Unsubscribe")
+	default:
+		sub.Unsubscribe()
+		<-unblocked
+	}
+}
+
+func TestSubscribeDuplicateType(t *testing.T) {
+	mux := new(TypeMux)
+	expected := "event: duplicate type event.testEvent in Subscribe"
+
+	defer func() {
+		err := recover()
+		if err == nil {
+			t.Errorf("Subscribe didn't panic for duplicate type")
+		} else if err != expected {
+			t.Errorf("panic mismatch: got %#v, expected %#v", err, expected)
+		}
+	}()
+	mux.Subscribe(testEvent(1), testEvent(2))
+}
+
+func TestMuxConcurrent(t *testing.T) {
+	rand.Seed(time.Now().Unix())
+	mux := new(TypeMux)
+	defer mux.Stop()
+
+	recv := make(chan int)
+	poster := func() {
+		for {
+			err := mux.Post(testEvent(0))
+			if err != nil {
+				return
+			}
+		}
+	}
+	sub := func(i int) {
+		time.Sleep(time.Duration(rand.Intn(99)) * time.Millisecond)
+		sub := mux.Subscribe(testEvent(0))
+		<-sub.Chan()
+		sub.Unsubscribe()
+		recv <- i
+	}
+
+	go poster()
+	go poster()
+	go poster()
+	nsubs := 1000
+	for i := 0; i < nsubs; i++ {
+		go sub(i)
+	}
+
+	// wait until everyone has been served
+	counts := make(map[int]int, nsubs)
+	for i := 0; i < nsubs; i++ {
+		counts[<-recv]++
+	}
+	for i, count := range counts {
+		if count != 1 {
+			t.Errorf("receiver %d called %d times, expected only 1 call", i, count)
+		}
+	}
+}
+
+func emptySubscriber(mux *TypeMux, types ...interface{}) {
+	s := mux.Subscribe(testEvent(0))
+	go func() {
+		for _ = range s.Chan() {
+		}
+	}()
+}
+
+func BenchmarkPost3(b *testing.B) {
+	var mux = new(TypeMux)
+	defer mux.Stop()
+	emptySubscriber(mux, testEvent(0))
+	emptySubscriber(mux, testEvent(0))
+	emptySubscriber(mux, testEvent(0))
+
+	for i := 0; i < b.N; i++ {
+		mux.Post(testEvent(0))
+	}
+}
+
+func BenchmarkPostConcurrent(b *testing.B) {
+	var mux = new(TypeMux)
+	defer mux.Stop()
+	emptySubscriber(mux, testEvent(0))
+	emptySubscriber(mux, testEvent(0))
+	emptySubscriber(mux, testEvent(0))
+
+	var wg sync.WaitGroup
+	poster := func() {
+		for i := 0; i < b.N; i++ {
+			mux.Post(testEvent(0))
+		}
+		wg.Done()
+	}
+	wg.Add(5)
+	for i := 0; i < 5; i++ {
+		go poster()
+	}
+	wg.Wait()
+}
+
+// for comparison
+func BenchmarkChanSend(b *testing.B) {
+	c := make(chan interface{})
+	closed := make(chan struct{})
+	go func() {
+		for _ = range c {
+		}
+	}()
+
+	for i := 0; i < b.N; i++ {
+		select {
+		case c <- i:
+		case <-closed:
+		}
+	}
+}
diff --git a/event/example_test.go b/event/example_test.go
new file mode 100644
index 000000000..2f47f6f27
--- /dev/null
+++ b/event/example_test.go
@@ -0,0 +1,42 @@
+package event
+
+import "fmt"
+
+func ExampleTypeMux() {
+	type someEvent struct{ I int }
+	type otherEvent struct{ S string }
+	type yetAnotherEvent struct{ X, Y int }
+
+	var mux TypeMux
+
+	// Start a subscriber.
+	done := make(chan struct{})
+	sub := mux.Subscribe(someEvent{}, otherEvent{})
+	go func() {
+		for event := range sub.Chan() {
+			fmt.Printf("Received: %#v\n", event)
+		}
+		fmt.Println("done")
+		close(done)
+	}()
+
+	// Post some events.
+	mux.Post(someEvent{5})
+	mux.Post(yetAnotherEvent{X: 3, Y: 4})
+	mux.Post(someEvent{6})
+	mux.Post(otherEvent{"whoa"})
+
+	// Stop closes all subscription channels.
+	// The subscriber goroutine will print "done"
+	// and exit.
+	mux.Stop()
+
+	// Wait for subscriber to return.
+	<-done
+
+	// Output:
+	// Received: event.someEvent{I:5}
+	// Received: event.someEvent{I:6}
+	// Received: event.otherEvent{S:"whoa"}
+	// done
+}
diff --git a/event/filter/filter.go b/event/filter/filter.go
new file mode 100644
index 000000000..9817d5782
--- /dev/null
+++ b/event/filter/filter.go
@@ -0,0 +1,70 @@
+package filter
+
+import "reflect"
+
+type Filter interface {
+	Compare(Filter) bool
+	Trigger(data interface{})
+}
+
+type FilterEvent struct {
+	filter Filter
+	data   interface{}
+}
+
+type Filters struct {
+	id       int
+	watchers map[int]Filter
+	ch       chan FilterEvent
+
+	quit chan struct{}
+}
+
+func New() *Filters {
+	return &Filters{
+		ch:       make(chan FilterEvent),
+		watchers: make(map[int]Filter),
+		quit:     make(chan struct{}),
+	}
+}
+
+func (self *Filters) Start() {
+	go self.loop()
+}
+
+func (self *Filters) Stop() {
+	close(self.quit)
+}
+
+func (self *Filters) Notify(filter Filter, data interface{}) {
+	self.ch <- FilterEvent{filter, data}
+}
+
+func (self *Filters) Install(watcher Filter) int {
+	self.watchers[self.id] = watcher
+	self.id++
+
+	return self.id - 1
+}
+
+func (self *Filters) Uninstall(id int) {
+	delete(self.watchers, id)
+}
+
+func (self *Filters) loop() {
+out:
+	for {
+		select {
+		case <-self.quit:
+			break out
+		case event := <-self.ch:
+			for _, watcher := range self.watchers {
+				if reflect.TypeOf(watcher) == reflect.TypeOf(event.filter) {
+					if watcher.Compare(event.filter) {
+						watcher.Trigger(event.data)
+					}
+				}
+			}
+		}
+	}
+}
diff --git a/event/filter/filter_test.go b/event/filter/filter_test.go
new file mode 100644
index 000000000..815deb63a
--- /dev/null
+++ b/event/filter/filter_test.go
@@ -0,0 +1,34 @@
+package filter
+
+import "testing"
+
+func TestFilters(t *testing.T) {
+	var success bool
+	var failure bool
+
+	fm := New()
+	fm.Start()
+	fm.Install(Generic{
+		Str1: "hello",
+		Fn: func(data interface{}) {
+			success = data.(bool)
+		},
+	})
+	fm.Install(Generic{
+		Str1: "hello1",
+		Str2: "hello",
+		Fn: func(data interface{}) {
+			failure = true
+		},
+	})
+	fm.Notify(Generic{Str1: "hello"}, true)
+	fm.Stop()
+
+	if !success {
+		t.Error("expected 'hello' to be posted")
+	}
+
+	if failure {
+		t.Error("hello1 was triggered")
+	}
+}
diff --git a/event/filter/generic_filter.go b/event/filter/generic_filter.go
new file mode 100644
index 000000000..b04b4801e
--- /dev/null
+++ b/event/filter/generic_filter.go
@@ -0,0 +1,22 @@
+package filter
+
+type Generic struct {
+	Str1, Str2, Str3 string
+
+	Fn func(data interface{})
+}
+
+func (self Generic) Compare(f Filter) bool {
+	filter := f.(Generic)
+	if (len(self.Str1) == 0 || filter.Str1 == self.Str1) &&
+		(len(self.Str2) == 0 || filter.Str2 == self.Str2) &&
+		(len(self.Str3) == 0 || filter.Str3 == self.Str3) {
+		return true
+	}
+
+	return false
+}
+
+func (self Generic) Trigger(data interface{}) {
+	self.Fn(data)
+}
diff --git a/events.go b/events.go
new file mode 100644
index 000000000..5fff1d831
--- /dev/null
+++ b/events.go
@@ -0,0 +1,11 @@
+package eth
+
+import "container/list"
+
+type PeerListEvent struct {
+	Peers *list.List
+}
+
+type ChainSyncEvent struct {
+	InSync bool
+}
diff --git a/gocoverage.sh b/gocoverage.sh
new file mode 100755
index 000000000..35038108b
--- /dev/null
+++ b/gocoverage.sh
@@ -0,0 +1,29 @@
+#!/bin/bash
+# The script does automatic checking on a Go package and its sub-packages, including:
+# 6. test coverage (http://blog.golang.org/cover)
+
+set -e
+
+# Run test coverage on each subdirectories and merge the coverage profile.
+
+echo "mode: count" > profile.cov
+
+# Standard go tooling behavior is to ignore dirs with leading underscors
+for dir in $(find . -maxdepth 10 -not -path './.git*' -not -path '*/_*' -type d);
+do
+if ls $dir/*.go &> /dev/null; then
+    # echo $dir
+    go test -covermode=count -coverprofile=$dir/profile.tmp $dir
+    if [ -f $dir/profile.tmp ]
+    then
+        cat $dir/profile.tmp | tail -n +2 >> profile.cov
+        rm $dir/profile.tmp
+    fi
+fi
+done
+
+go tool cover -func profile.cov
+
+# To submit the test coverage result to coveralls.io,
+# use goveralls (https://github.com/mattn/goveralls)
+# goveralls -coverprofile=profile.cov -service=travis-ci
diff --git a/install.sh b/install.sh
index 9719a1afc..30a3802e4 100755
--- a/install.sh
+++ b/install.sh
@@ -1,15 +1,20 @@
 #!/bin/sh
 
 if [ "$1" == "" ]; then
-	echo "Usage $0 executable branch ethereum develop"
-	echo "executable    ethereum or ethereal"
-	echo "branch        develop or master"
+	echo "Usage $0 executable branch"
+	echo "executable    ethereum | mist"
+	echo "branch        develop | master"
 	exit
 fi
 
 exe=$1
+path=$exe
 branch=$2
 
+if [ "$branch" == "develop" ]; then
+	path="cmd/$exe"
+fi
+
 # Test if go is installed
 command -v go >/dev/null 2>&1 || { echo >&2 "Unable to find 'go'. This script requires go."; exit 1; }
 
@@ -19,39 +24,30 @@ if [ "$GOPATH" == "" ]; then
 	exit
 fi
 
-echo "go get -u -d github.com/ethereum/go-ethereum/$exe"
-go get -v -u -d github.com/ethereum/go-ethereum/$exe
-if [ $? != 0 ]; then
-	echo "go get failed"
-	exit
-fi
+echo "changing branch to $branch"
+cd $GOPATH/src/github.com/ethereum/go-ethereum
+git checkout $branch
 
-echo "serpent-go"
-cd $GOPATH/src/github.com/obscuren/serpent-go
+# installing package dependencies doesn't work for develop
+# branch as go get always pulls from master head
+# so build will continue to fail, but this installs locally
+# for people who git clone since go install will manage deps
 
-echo "init submodule"
-git submodule init
-git submodule update
+#echo "go get -u -d github.com/ethereum/go-ethereum/$path"
+#go get -v -u -d github.com/ethereum/go-ethereum/$path
+#if [ $? != 0 ]; then
+#	echo "go get failed"
+#	exit
+#fi
 
-echo "eth-go"
-cd $GOPATH/src/github.com/ethereum/eth-go
-git checkout $branch
+cd $GOPATH/src/github.com/ethereum/go-ethereum/$path
 
-echo "go-ethereum"
-cd $GOPATH/src/github.com/ethereum/go-ethereum/$exe
-git checkout $branch
-
-if [ "$exe" == "ethereal" ]; then
-	echo "Building ethereal GUI. Assuming Qt is installed. If this step"
+if [ "$exe" == "mist" ]; then
+	echo "Building Mist GUI. Assuming Qt is installed. If this step"
 	echo "fails; please refer to: https://github.com/ethereum/go-ethereum/wiki/Building-Ethereum(Go)"
 else
 	echo "Building ethereum CLI."
 fi
 
 go install
-if [ $? == 0 ]; then
-	echo "go install failed"
-	exit
-fi
-
 echo "done. Please run $exe :-)"
diff --git a/install_deps.sh b/install_deps.sh
new file mode 100755
index 000000000..73a313324
--- /dev/null
+++ b/install_deps.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -e
+
+TEST_DEPS=$(go list -f '{{.Imports}} {{.TestImports}} {{.XTestImports}}' github.com/ethereum/go-ethereum/... | sed -e 's/\[//g' | sed -e 's/\]//g' | sed -e 's/C //g')
+if [ "$TEST_DEPS" ]; then
+  go get -race $TEST_DEPS
+fi
diff --git a/javascript/javascript_runtime.go b/javascript/javascript_runtime.go
index ffc672a63..a26f0154e 100644
--- a/javascript/javascript_runtime.go
+++ b/javascript/javascript_runtime.go
@@ -7,27 +7,26 @@ import (
 	"path"
 	"path/filepath"
 
-	"github.com/ethereum/eth-go"
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethlog"
-	"github.com/ethereum/eth-go/ethpipe"
-	"github.com/ethereum/eth-go/ethreact"
-	"github.com/ethereum/eth-go/ethstate"
-	"github.com/ethereum/eth-go/ethutil"
-	"github.com/ethereum/go-ethereum/utils"
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/xeth"
 	"github.com/obscuren/otto"
 )
 
-var jsrelogger = ethlog.NewLogger("JSRE")
+var jsrelogger = logger.NewLogger("JSRE")
 
 type JSRE struct {
 	ethereum *eth.Ethereum
 	Vm       *otto.Otto
-	pipe     *ethpipe.JSPipe
+	pipe     *xeth.JSXEth
 
-	blockChan  chan ethreact.Event
-	changeChan chan ethreact.Event
-	quitChan   chan bool
+	events event.Subscription
 
 	objectCb map[string][]otto.Value
 }
@@ -42,7 +41,7 @@ func (jsre *JSRE) LoadExtFile(path string) {
 }
 
 func (jsre *JSRE) LoadIntFile(file string) {
-	assetPath := path.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "mist", "assets", "ext")
+	assetPath := path.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "cmd", "mist", "assets", "ext")
 	jsre.LoadExtFile(path.Join(assetPath, file))
 }
 
@@ -50,10 +49,8 @@ func NewJSRE(ethereum *eth.Ethereum) *JSRE {
 	re := &JSRE{
 		ethereum,
 		otto.New(),
-		ethpipe.NewJSPipe(ethereum),
-		make(chan ethreact.Event, 10),
-		make(chan ethreact.Event, 10),
-		make(chan bool),
+		xeth.NewJSXEth(ethereum),
+		nil,
 		make(map[string][]otto.Value),
 	}
 
@@ -64,13 +61,13 @@ func NewJSRE(ethereum *eth.Ethereum) *JSRE {
 	re.LoadIntFile("string.js")
 	re.LoadIntFile("big.js")
 
+	// Subscribe to events
+	mux := ethereum.EventMux()
+	re.events = mux.Subscribe(core.NewBlockEvent{})
+
 	// We have to make sure that, whoever calls this, calls "Stop"
 	go re.mainLoop()
 
-	// Subscribe to events
-	reactor := ethereum.Reactor()
-	reactor.Subscribe("newBlock", re.blockChan)
-
 	re.Bind("eth", &JSEthereum{re.pipe, re.Vm, ethereum})
 
 	re.initStdFuncs()
@@ -105,25 +102,12 @@ func (self *JSRE) Require(file string) error {
 }
 
 func (self *JSRE) Stop() {
-	// Kill the main loop
-	self.quitChan <- true
-
-	close(self.blockChan)
-	close(self.quitChan)
-	close(self.changeChan)
+	self.events.Unsubscribe()
 	jsrelogger.Infoln("stopped")
 }
 
 func (self *JSRE) mainLoop() {
-out:
-	for {
-		select {
-		case <-self.quitChan:
-			break out
-		case block := <-self.blockChan:
-			if _, ok := block.Resource.(*ethchain.Block); ok {
-			}
-		}
+	for _ = range self.events.Chan() {
 	}
 }
 
@@ -137,6 +121,7 @@ func (self *JSRE) initStdFuncs() {
 	eth.Set("startMining", self.startMining)
 	eth.Set("execBlock", self.execBlock)
 	eth.Set("dump", self.dump)
+	eth.Set("export", self.export)
 }
 
 /*
@@ -144,16 +129,16 @@ func (self *JSRE) initStdFuncs() {
  */
 
 func (self *JSRE) dump(call otto.FunctionCall) otto.Value {
-	var state *ethstate.State
+	var state *state.StateDB
 
 	if len(call.ArgumentList) > 0 {
-		var block *ethchain.Block
+		var block *types.Block
 		if call.Argument(0).IsNumber() {
 			num, _ := call.Argument(0).ToInteger()
-			block = self.ethereum.BlockChain().GetBlockByNumber(uint64(num))
+			block = self.ethereum.ChainManager().GetBlockByNumber(uint64(num))
 		} else if call.Argument(0).IsString() {
 			hash, _ := call.Argument(0).ToString()
-			block = self.ethereum.BlockChain().GetBlock(ethutil.Hex2Bytes(hash))
+			block = self.ethereum.ChainManager().GetBlock(ethutil.Hex2Bytes(hash))
 		} else {
 			fmt.Println("invalid argument for dump. Either hex string or number")
 		}
@@ -166,7 +151,7 @@ func (self *JSRE) dump(call otto.FunctionCall) otto.Value {
 
 		state = block.State()
 	} else {
-		state = self.ethereum.StateManager().CurrentState()
+		state = self.ethereum.ChainManager().State()
 	}
 
 	v, _ := self.Vm.ToValue(state.Dump())
@@ -201,13 +186,13 @@ func (self *JSRE) watch(call otto.FunctionCall) otto.Value {
 	if storageCallback {
 		self.objectCb[addr+storageAddr] = append(self.objectCb[addr+storageAddr], cb)
 
-		event := "storage:" + string(ethutil.Hex2Bytes(addr)) + ":" + string(ethutil.Hex2Bytes(storageAddr))
-		self.ethereum.Reactor().Subscribe(event, self.changeChan)
+		// event := "storage:" + string(ethutil.Hex2Bytes(addr)) + ":" + string(ethutil.Hex2Bytes(storageAddr))
+		// self.ethereum.EventMux().Subscribe(event, self.changeChan)
 	} else {
 		self.objectCb[addr] = append(self.objectCb[addr], cb)
 
-		event := "object:" + string(ethutil.Hex2Bytes(addr))
-		self.ethereum.Reactor().Subscribe(event, self.changeChan)
+		// event := "object:" + string(ethutil.Hex2Bytes(addr))
+		// self.ethereum.EventMux().Subscribe(event, self.changeChan)
 	}
 
 	return otto.UndefinedValue()
@@ -252,3 +237,20 @@ func (self *JSRE) execBlock(call otto.FunctionCall) otto.Value {
 
 	return otto.TrueValue()
 }
+
+func (self *JSRE) export(call otto.FunctionCall) otto.Value {
+	fn, err := call.Argument(0).ToString()
+	if err != nil {
+		fmt.Println(err)
+		return otto.FalseValue()
+	}
+
+	data := self.ethereum.ChainManager().Export()
+
+	if err := ethutil.WriteFile(fn, data); err != nil {
+		fmt.Println(err)
+		return otto.FalseValue()
+	}
+
+	return otto.TrueValue()
+}
diff --git a/javascript/js_lib.go b/javascript/js_lib.go
index a3e9b8a5b..dd1fe5f4d 100644
--- a/javascript/js_lib.go
+++ b/javascript/js_lib.go
@@ -44,9 +44,11 @@ function pp(object) {
 
 function prettyPrint(/* */) {
     var args = arguments;
+    var ret = "";
     for(var i = 0, l = args.length; i < l; i++) {
-	    console.log(pp(args[i]))
+	    ret += pp(args[i]) + "\n";
     }
+    return ret;
 }
 
 var print = prettyPrint;
diff --git a/javascript/types.go b/javascript/types.go
index 53a2977a8..d5acaecce 100644
--- a/javascript/types.go
+++ b/javascript/types.go
@@ -3,16 +3,16 @@ package javascript
 import (
 	"fmt"
 
-	"github.com/ethereum/eth-go"
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethpipe"
-	"github.com/ethereum/eth-go/ethstate"
-	"github.com/ethereum/eth-go/ethutil"
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/ui"
+	"github.com/ethereum/go-ethereum/xeth"
 	"github.com/obscuren/otto"
 )
 
 type JSStateObject struct {
-	*ethpipe.JSObject
+	*xeth.JSObject
 	eth *JSEthereum
 }
 
@@ -30,7 +30,7 @@ func (self *JSStateObject) EachStorage(call otto.FunctionCall) otto.Value {
 // The JSEthereum object attempts to wrap the PEthereum object and returns
 // meaningful javascript objects
 type JSBlock struct {
-	*ethpipe.JSBlock
+	*xeth.JSBlock
 	eth *JSEthereum
 }
 
@@ -51,7 +51,7 @@ type JSMessage struct {
 	Number    int32  `json:"number"`
 }
 
-func NewJSMessage(message *ethstate.Message) JSMessage {
+func NewJSMessage(message *state.Message) JSMessage {
 	return JSMessage{
 		To:        ethutil.Bytes2Hex(message.To),
 		From:      ethutil.Bytes2Hex(message.From),
@@ -67,33 +67,33 @@ func NewJSMessage(message *ethstate.Message) JSMessage {
 }
 
 type JSEthereum struct {
-	*ethpipe.JSPipe
+	*xeth.JSXEth
 	vm       *otto.Otto
 	ethereum *eth.Ethereum
 }
 
 func (self *JSEthereum) GetBlock(hash string) otto.Value {
-	return self.toVal(&JSBlock{self.JSPipe.BlockByHash(hash), self})
+	return self.toVal(&JSBlock{self.JSXEth.BlockByHash(hash), self})
 }
 
 func (self *JSEthereum) GetPeers() otto.Value {
-	return self.toVal(self.JSPipe.Peers())
+	return self.toVal(self.JSXEth.Peers())
 }
 
 func (self *JSEthereum) GetKey() otto.Value {
-	return self.toVal(self.JSPipe.Key())
+	return self.toVal(self.JSXEth.Key())
 }
 
 func (self *JSEthereum) GetStateObject(addr string) otto.Value {
-	return self.toVal(&JSStateObject{ethpipe.NewJSObject(self.JSPipe.World().SafeGet(ethutil.Hex2Bytes(addr))), self})
+	return self.toVal(&JSStateObject{xeth.NewJSObject(self.JSXEth.World().SafeGet(ethutil.Hex2Bytes(addr))), self})
 }
 
 func (self *JSEthereum) Peers() otto.Value {
-	return self.toVal(self.JSPipe.Peers())
+	return self.toVal(self.JSXEth.Peers())
 }
 
 func (self *JSEthereum) Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr string) otto.Value {
-	r, err := self.JSPipe.Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr)
+	r, err := self.JSXEth.Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr)
 	if err != nil {
 		fmt.Println(err)
 
@@ -104,7 +104,7 @@ func (self *JSEthereum) Transact(key, recipient, valueStr, gasStr, gasPriceStr,
 }
 
 func (self *JSEthereum) Create(key, valueStr, gasStr, gasPriceStr, scriptStr string) otto.Value {
-	r, err := self.JSPipe.Transact(key, "", valueStr, gasStr, gasPriceStr, scriptStr)
+	r, err := self.JSXEth.Transact(key, "", valueStr, gasStr, gasPriceStr, scriptStr)
 
 	if err != nil {
 		fmt.Println(err)
@@ -128,7 +128,7 @@ func (self *JSEthereum) toVal(v interface{}) otto.Value {
 }
 
 func (self *JSEthereum) Messages(object map[string]interface{}) otto.Value {
-	filter := ethchain.NewFilterFromMap(object, self.ethereum)
+	filter := ui.NewFilterFromMap(object, self.ethereum)
 
 	messages := filter.Find()
 	var msgs []JSMessage
diff --git a/logger/example_test.go b/logger/example_test.go
new file mode 100644
index 000000000..c624252b8
--- /dev/null
+++ b/logger/example_test.go
@@ -0,0 +1,21 @@
+package logger
+
+import "os"
+
+func ExampleLogger() {
+	logger := NewLogger("TAG")
+	logger.Infoln("so awesome")            // prints [TAG] so awesome
+	logger.Infof("this %q is raw", "coin") // prints [TAG] this "coin" is raw
+}
+
+func ExampleLogSystem() {
+	filename := "test.log"
+	file, _ := os.OpenFile(filename, os.O_RDWR|os.O_CREATE, os.ModePerm)
+	fileLog := NewStdLogSystem(file, 0, WarnLevel)
+	AddLogSystem(fileLog)
+
+	stdoutLog := NewStdLogSystem(os.Stdout, 0, WarnLevel)
+	AddLogSystem(stdoutLog)
+
+	NewLogger("TAG").Warnln("reactor meltdown") // writes to both logs
+}
diff --git a/logger/loggers.go b/logger/loggers.go
new file mode 100644
index 000000000..1bf7bfa0e
--- /dev/null
+++ b/logger/loggers.go
@@ -0,0 +1,248 @@
+/*
+Package logger implements a multi-output leveled logger.
+
+Other packages use tagged logger to send log messages to shared
+(process-wide) logging engine. The shared logging engine dispatches to
+multiple log systems. The log level can be set separately per log
+system.
+
+Logging is asynchronous and does not block the caller. Message
+formatting is performed by the caller goroutine to avoid incorrect
+logging of mutable state.
+*/
+package logger
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"sync"
+	"sync/atomic"
+)
+
+// LogSystem is implemented by log output devices.
+// All methods can be called concurrently from multiple goroutines.
+type LogSystem interface {
+	GetLogLevel() LogLevel
+	SetLogLevel(i LogLevel)
+	LogPrint(LogLevel, string)
+}
+
+type message struct {
+	level LogLevel
+	msg   string
+}
+
+type LogLevel uint8
+
+const (
+	// Standard log levels
+	Silence LogLevel = iota
+	ErrorLevel
+	WarnLevel
+	InfoLevel
+	DebugLevel
+	DebugDetailLevel
+)
+
+var (
+	logMessageC = make(chan message)
+	addSystemC  = make(chan LogSystem)
+	flushC      = make(chan chan struct{})
+	resetC      = make(chan chan struct{})
+)
+
+func init() {
+	go dispatchLoop()
+}
+
+// each system can buffer this many messages before
+// blocking incoming log messages.
+const sysBufferSize = 500
+
+func dispatchLoop() {
+	var (
+		systems  []LogSystem
+		systemIn []chan message
+		systemWG sync.WaitGroup
+	)
+	bootSystem := func(sys LogSystem) {
+		in := make(chan message, sysBufferSize)
+		systemIn = append(systemIn, in)
+		systemWG.Add(1)
+		go sysLoop(sys, in, &systemWG)
+	}
+
+	for {
+		select {
+		case msg := <-logMessageC:
+			for _, c := range systemIn {
+				c <- msg
+			}
+
+		case sys := <-addSystemC:
+			systems = append(systems, sys)
+			bootSystem(sys)
+
+		case waiter := <-resetC:
+			// reset means terminate all systems
+			for _, c := range systemIn {
+				close(c)
+			}
+			systems = nil
+			systemIn = nil
+			systemWG.Wait()
+			close(waiter)
+
+		case waiter := <-flushC:
+			// flush means reboot all systems
+			for _, c := range systemIn {
+				close(c)
+			}
+			systemIn = nil
+			systemWG.Wait()
+			for _, sys := range systems {
+				bootSystem(sys)
+			}
+			close(waiter)
+		}
+	}
+}
+
+func sysLoop(sys LogSystem, in <-chan message, wg *sync.WaitGroup) {
+	for msg := range in {
+		if sys.GetLogLevel() >= msg.level {
+			sys.LogPrint(msg.level, msg.msg)
+		}
+	}
+	wg.Done()
+}
+
+// Reset removes all active log systems.
+// It blocks until all current messages have been delivered.
+func Reset() {
+	waiter := make(chan struct{})
+	resetC <- waiter
+	<-waiter
+}
+
+// Flush waits until all current log messages have been dispatched to
+// the active log systems.
+func Flush() {
+	waiter := make(chan struct{})
+	flushC <- waiter
+	<-waiter
+}
+
+// AddLogSystem starts printing messages to the given LogSystem.
+func AddLogSystem(sys LogSystem) {
+	addSystemC <- sys
+}
+
+// A Logger prints messages prefixed by a given tag. It provides named
+// Printf and Println style methods for all loglevels. Each ethereum
+// component should have its own logger with a unique prefix.
+type Logger struct {
+	tag string
+}
+
+func NewLogger(tag string) *Logger {
+	return &Logger{"[" + tag + "] "}
+}
+
+func (logger *Logger) sendln(level LogLevel, v ...interface{}) {
+	logMessageC <- message{level, logger.tag + fmt.Sprintln(v...)}
+}
+
+func (logger *Logger) sendf(level LogLevel, format string, v ...interface{}) {
+	logMessageC <- message{level, logger.tag + fmt.Sprintf(format, v...)}
+}
+
+// Errorln writes a message with ErrorLevel.
+func (logger *Logger) Errorln(v ...interface{}) {
+	logger.sendln(ErrorLevel, v...)
+}
+
+// Warnln writes a message with WarnLevel.
+func (logger *Logger) Warnln(v ...interface{}) {
+	logger.sendln(WarnLevel, v...)
+}
+
+// Infoln writes a message with InfoLevel.
+func (logger *Logger) Infoln(v ...interface{}) {
+	logger.sendln(InfoLevel, v...)
+}
+
+// Debugln writes a message with DebugLevel.
+func (logger *Logger) Debugln(v ...interface{}) {
+	logger.sendln(DebugLevel, v...)
+}
+
+// DebugDetailln writes a message with DebugDetailLevel.
+func (logger *Logger) DebugDetailln(v ...interface{}) {
+	logger.sendln(DebugDetailLevel, v...)
+}
+
+// Errorf writes a message with ErrorLevel.
+func (logger *Logger) Errorf(format string, v ...interface{}) {
+	logger.sendf(ErrorLevel, format, v...)
+}
+
+// Warnf writes a message with WarnLevel.
+func (logger *Logger) Warnf(format string, v ...interface{}) {
+	logger.sendf(WarnLevel, format, v...)
+}
+
+// Infof writes a message with InfoLevel.
+func (logger *Logger) Infof(format string, v ...interface{}) {
+	logger.sendf(InfoLevel, format, v...)
+}
+
+// Debugf writes a message with DebugLevel.
+func (logger *Logger) Debugf(format string, v ...interface{}) {
+	logger.sendf(DebugLevel, format, v...)
+}
+
+// DebugDetailf writes a message with DebugDetailLevel.
+func (logger *Logger) DebugDetailf(format string, v ...interface{}) {
+	logger.sendf(DebugDetailLevel, format, v...)
+}
+
+// Fatalln writes a message with ErrorLevel and exits the program.
+func (logger *Logger) Fatalln(v ...interface{}) {
+	logger.sendln(ErrorLevel, v...)
+	Flush()
+	os.Exit(0)
+}
+
+// Fatalf writes a message with ErrorLevel and exits the program.
+func (logger *Logger) Fatalf(format string, v ...interface{}) {
+	logger.sendf(ErrorLevel, format, v...)
+	Flush()
+	os.Exit(0)
+}
+
+// NewStdLogSystem creates a LogSystem that prints to the given writer.
+// The flag values are defined package log.
+func NewStdLogSystem(writer io.Writer, flags int, level LogLevel) LogSystem {
+	logger := log.New(writer, "", flags)
+	return &stdLogSystem{logger, uint32(level)}
+}
+
+type stdLogSystem struct {
+	logger *log.Logger
+	level  uint32
+}
+
+func (t *stdLogSystem) LogPrint(level LogLevel, msg string) {
+	t.logger.Print(msg)
+}
+
+func (t *stdLogSystem) SetLogLevel(i LogLevel) {
+	atomic.StoreUint32(&t.level, uint32(i))
+}
+
+func (t *stdLogSystem) GetLogLevel() LogLevel {
+	return LogLevel(atomic.LoadUint32(&t.level))
+}
diff --git a/logger/loggers_test.go b/logger/loggers_test.go
new file mode 100644
index 000000000..adc4df016
--- /dev/null
+++ b/logger/loggers_test.go
@@ -0,0 +1,174 @@
+package logger
+
+import (
+	"io/ioutil"
+	"math/rand"
+	"os"
+	"sync"
+	"testing"
+	"time"
+)
+
+type TestLogSystem struct {
+	mutex  sync.Mutex
+	output string
+	level  LogLevel
+}
+
+func (ls *TestLogSystem) LogPrint(level LogLevel, msg string) {
+	ls.mutex.Lock()
+	ls.output += msg
+	ls.mutex.Unlock()
+}
+
+func (ls *TestLogSystem) SetLogLevel(i LogLevel) {
+	ls.mutex.Lock()
+	ls.level = i
+	ls.mutex.Unlock()
+}
+
+func (ls *TestLogSystem) GetLogLevel() LogLevel {
+	ls.mutex.Lock()
+	defer ls.mutex.Unlock()
+	return ls.level
+}
+
+func (ls *TestLogSystem) CheckOutput(t *testing.T, expected string) {
+	ls.mutex.Lock()
+	output := ls.output
+	ls.mutex.Unlock()
+	if output != expected {
+		t.Errorf("log output mismatch:\n   got: %q\n  want: %q\n", output, expected)
+	}
+}
+
+type blockedLogSystem struct {
+	LogSystem
+	unblock chan struct{}
+}
+
+func (ls blockedLogSystem) LogPrint(level LogLevel, msg string) {
+	<-ls.unblock
+	ls.LogSystem.LogPrint(level, msg)
+}
+
+func TestLoggerFlush(t *testing.T) {
+	Reset()
+
+	logger := NewLogger("TEST")
+	ls := blockedLogSystem{&TestLogSystem{level: WarnLevel}, make(chan struct{})}
+	AddLogSystem(ls)
+	for i := 0; i < 5; i++ {
+		// these writes shouldn't hang even though ls is blocked
+		logger.Errorf(".")
+	}
+
+	beforeFlush := time.Now()
+	time.AfterFunc(80*time.Millisecond, func() { close(ls.unblock) })
+	Flush() // this should hang for approx. 80ms
+	if blockd := time.Now().Sub(beforeFlush); blockd < 80*time.Millisecond {
+		t.Errorf("Flush didn't block long enough, blocked for %v, should've been >= 80ms", blockd)
+	}
+
+	ls.LogSystem.(*TestLogSystem).CheckOutput(t, "[TEST] .[TEST] .[TEST] .[TEST] .[TEST] .")
+}
+
+func TestLoggerPrintln(t *testing.T) {
+	Reset()
+
+	logger := NewLogger("TEST")
+	testLogSystem := &TestLogSystem{level: WarnLevel}
+	AddLogSystem(testLogSystem)
+	logger.Errorln("error")
+	logger.Warnln("warn")
+	logger.Infoln("info")
+	logger.Debugln("debug")
+	Flush()
+
+	testLogSystem.CheckOutput(t, "[TEST] error\n[TEST] warn\n")
+}
+
+func TestLoggerPrintf(t *testing.T) {
+	Reset()
+
+	logger := NewLogger("TEST")
+	testLogSystem := &TestLogSystem{level: WarnLevel}
+	AddLogSystem(testLogSystem)
+	logger.Errorf("error to %v\n", []int{1, 2, 3})
+	logger.Warnf("warn %%d %d", 5)
+	logger.Infof("info")
+	logger.Debugf("debug")
+	Flush()
+	testLogSystem.CheckOutput(t, "[TEST] error to [1 2 3]\n[TEST] warn %d 5")
+}
+
+func TestMultipleLogSystems(t *testing.T) {
+	Reset()
+
+	logger := NewLogger("TEST")
+	testLogSystem0 := &TestLogSystem{level: ErrorLevel}
+	testLogSystem1 := &TestLogSystem{level: WarnLevel}
+	AddLogSystem(testLogSystem0)
+	AddLogSystem(testLogSystem1)
+	logger.Errorln("error")
+	logger.Warnln("warn")
+	Flush()
+
+	testLogSystem0.CheckOutput(t, "[TEST] error\n")
+	testLogSystem1.CheckOutput(t, "[TEST] error\n[TEST] warn\n")
+}
+
+func TestFileLogSystem(t *testing.T) {
+	Reset()
+
+	logger := NewLogger("TEST")
+	filename := "test.log"
+	file, _ := os.OpenFile(filename, os.O_RDWR|os.O_CREATE, os.ModePerm)
+	testLogSystem := NewStdLogSystem(file, 0, WarnLevel)
+	AddLogSystem(testLogSystem)
+	logger.Errorf("error to %s\n", filename)
+	logger.Warnln("warn")
+	Flush()
+	contents, _ := ioutil.ReadFile(filename)
+	output := string(contents)
+	if output != "[TEST] error to test.log\n[TEST] warn\n" {
+		t.Error("Expected contents of file 'test.log': '[TEST] error to test.log\\n[TEST] warn\\n', got ", output)
+	} else {
+		os.Remove(filename)
+	}
+}
+
+func TestNoLogSystem(t *testing.T) {
+	Reset()
+
+	logger := NewLogger("TEST")
+	logger.Warnln("warn")
+	Flush()
+}
+
+func TestConcurrentAddSystem(t *testing.T) {
+	rand.Seed(time.Now().Unix())
+	Reset()
+
+	logger := NewLogger("TEST")
+	stop := make(chan struct{})
+	writer := func() {
+		select {
+		case <-stop:
+			return
+		default:
+			logger.Infoln("foo")
+			Flush()
+		}
+	}
+
+	go writer()
+	go writer()
+
+	stopTime := time.Now().Add(100 * time.Millisecond)
+	for time.Now().Before(stopTime) {
+		time.Sleep(time.Duration(rand.Intn(20)) * time.Millisecond)
+		AddLogSystem(NewStdLogSystem(ioutil.Discard, 0, InfoLevel))
+	}
+	close(stop)
+}
diff --git a/miner/miner.go b/miner/miner.go
new file mode 100644
index 000000000..f63096b63
--- /dev/null
+++ b/miner/miner.go
@@ -0,0 +1,261 @@
+/*
+	This file is part of go-ethereum
+
+	go-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	go-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @authors
+ * 	Jeffrey Wilcke <i@jev.io>
+ * @date 2014
+ *
+ */
+
+package miner
+
+import (
+	"math/big"
+	"sort"
+
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/pow"
+	"github.com/ethereum/go-ethereum/pow/ezp"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/wire"
+)
+
+type LocalTx struct {
+	To       []byte `json:"to"`
+	Data     []byte `json:"data"`
+	Gas      string `json:"gas"`
+	GasPrice string `json:"gasPrice"`
+	Value    string `json:"value"`
+}
+
+func (self *LocalTx) Sign(key []byte) *types.Transaction {
+	return nil
+}
+
+var minerlogger = logger.NewLogger("MINER")
+
+type Miner struct {
+	eth    *eth.Ethereum
+	events event.Subscription
+
+	uncles    types.Blocks
+	localTxs  map[int]*LocalTx
+	localTxId int
+
+	pow       pow.PoW
+	quitCh    chan struct{}
+	powQuitCh chan struct{}
+
+	Coinbase []byte
+
+	mining bool
+
+	MinAcceptedGasPrice *big.Int
+}
+
+func New(coinbase []byte, eth *eth.Ethereum) *Miner {
+	return &Miner{
+		eth:                 eth,
+		powQuitCh:           make(chan struct{}),
+		pow:                 ezp.New(),
+		mining:              false,
+		localTxs:            make(map[int]*LocalTx),
+		MinAcceptedGasPrice: big.NewInt(10000000000000),
+		Coinbase:            coinbase,
+	}
+}
+
+func (self *Miner) GetPow() pow.PoW {
+	return self.pow
+}
+
+func (self *Miner) AddLocalTx(tx *LocalTx) int {
+	minerlogger.Infof("Added local tx (%x %v / %v)\n", tx.To[0:4], tx.GasPrice, tx.Value)
+
+	self.localTxId++
+	self.localTxs[self.localTxId] = tx
+	self.eth.EventMux().Post(tx)
+
+	return self.localTxId
+}
+
+func (self *Miner) RemoveLocalTx(id int) {
+	if tx := self.localTxs[id]; tx != nil {
+		minerlogger.Infof("Removed local tx (%x %v / %v)\n", tx.To[0:4], tx.GasPrice, tx.Value)
+	}
+	self.eth.EventMux().Post(&LocalTx{})
+
+	delete(self.localTxs, id)
+}
+
+func (self *Miner) Start() {
+	if self.mining {
+		return
+	}
+
+	minerlogger.Infoln("Starting mining operations")
+	self.mining = true
+	self.quitCh = make(chan struct{})
+	self.powQuitCh = make(chan struct{})
+
+	mux := self.eth.EventMux()
+	self.events = mux.Subscribe(core.NewBlockEvent{}, core.TxPreEvent{}, &LocalTx{})
+
+	go self.update()
+	go self.mine()
+}
+
+func (self *Miner) Stop() {
+	if !self.mining {
+		return
+	}
+
+	self.mining = false
+
+	minerlogger.Infoln("Stopping mining operations")
+
+	self.events.Unsubscribe()
+
+	close(self.quitCh)
+	close(self.powQuitCh)
+}
+
+func (self *Miner) Mining() bool {
+	return self.mining
+}
+
+func (self *Miner) update() {
+out:
+	for {
+		select {
+		case event := <-self.events.Chan():
+			switch event := event.(type) {
+			case core.NewBlockEvent:
+				block := event.Block
+				if self.eth.ChainManager().HasBlock(block.Hash()) {
+					self.reset()
+					self.eth.TxPool().RemoveSet(block.Transactions())
+					go self.mine()
+				} else if true {
+					// do uncle stuff
+				}
+			case core.TxPreEvent, *LocalTx:
+				self.reset()
+				go self.mine()
+			}
+		case <-self.quitCh:
+			break out
+		}
+	}
+}
+
+func (self *Miner) reset() {
+	close(self.powQuitCh)
+	self.powQuitCh = make(chan struct{})
+}
+
+func (self *Miner) mine() {
+	var (
+		blockManager = self.eth.BlockManager()
+		chainMan     = self.eth.ChainManager()
+		block        = chainMan.NewBlock(self.Coinbase)
+	)
+
+	// Apply uncles
+	if len(self.uncles) > 0 {
+		block.SetUncles(self.uncles)
+	}
+
+	parent := chainMan.GetBlock(block.PrevHash)
+	coinbase := block.State().GetOrNewStateObject(block.Coinbase)
+	coinbase.SetGasPool(block.CalcGasLimit(parent))
+
+	transactions := self.finiliseTxs()
+
+	// Accumulate all valid transactions and apply them to the new state
+	// Error may be ignored. It's not important during mining
+	receipts, txs, _, erroneous, err := blockManager.ApplyTransactions(coinbase, block.State(), block, transactions, true)
+	if err != nil {
+		minerlogger.Debugln(err)
+	}
+	self.eth.TxPool().RemoveSet(erroneous)
+
+	block.SetTransactions(txs)
+	block.SetReceipts(receipts)
+
+	// Accumulate the rewards included for this block
+	blockManager.AccumelateRewards(block.State(), block, parent)
+
+	block.State().Update(ethutil.Big0)
+
+	minerlogger.Infof("Mining on block. Includes %v transactions", len(transactions))
+
+	// Find a valid nonce
+	nonce := self.pow.Search(block, self.powQuitCh)
+	if nonce != nil {
+		block.Nonce = nonce
+		err := chainMan.InsertChain(types.Blocks{block})
+		if err != nil {
+			minerlogger.Infoln(err)
+		} else {
+			self.eth.Broadcast(wire.MsgBlockTy, []interface{}{block.Value().Val})
+
+			minerlogger.Infof("🔨  Mined block %x\n", block.Hash())
+			minerlogger.Infoln(block)
+		}
+
+		go self.mine()
+	}
+}
+
+func (self *Miner) finiliseTxs() types.Transactions {
+	// Sort the transactions by nonce in case of odd network propagation
+	actualSize := len(self.localTxs) // See copy below
+	txs := make(types.Transactions, actualSize+self.eth.TxPool().Size())
+
+	state := self.eth.ChainManager().TransState()
+	// XXX This has to change. Coinbase is, for new, same as key.
+	key := self.eth.KeyManager()
+	for i, ltx := range self.localTxs {
+		tx := types.NewTransactionMessage(ltx.To, ethutil.Big(ltx.Value), ethutil.Big(ltx.Gas), ethutil.Big(ltx.GasPrice), ltx.Data)
+		tx.SetNonce(state.GetNonce(self.Coinbase))
+		state.SetNonce(self.Coinbase, tx.Nonce()+1)
+
+		tx.Sign(key.PrivateKey())
+
+		txs[i] = tx
+	}
+
+	// Faster than append
+	for _, tx := range self.eth.TxPool().CurrentTransactions() {
+		if tx.GasPrice().Cmp(self.MinAcceptedGasPrice) >= 0 {
+			txs[actualSize] = tx
+			actualSize++
+		}
+	}
+
+	newTransactions := make(types.Transactions, actualSize)
+	copy(newTransactions, txs[:actualSize])
+	sort.Sort(types.TxByNonce{newTransactions})
+
+	return newTransactions
+}
diff --git a/mist/assets/ext/http.js b/mist/assets/ext/http.js
deleted file mode 100644
index 725ce8e6b..000000000
--- a/mist/assets/ext/http.js
+++ /dev/null
@@ -1,13 +0,0 @@
-// this function is included locally, but you can also include separately via a header definition
-function request(url, callback) {
-	var xhr = new XMLHttpRequest();
-	xhr.onreadystatechange = (function(req) {
-		return function() {
-			if(req.readyState === 4) {
-				callback(req);
-			}
-		}
-	})(xhr);
-	xhr.open('GET', url, true);
-	xhr.send('');
-}
diff --git a/mist/assets/ext/qml_messaging.js b/mist/assets/ext/qml_messaging.js
deleted file mode 100644
index 8222c848d..000000000
--- a/mist/assets/ext/qml_messaging.js
+++ /dev/null
@@ -1,13 +0,0 @@
-function HandleMessage(data) {
-	var message;
-	try { message = JSON.parse(data) } catch(e) {};
-
-	if(message) {
-		switch(message.type) {
-			case "coinbase":
-				return eth.coinBase();
-			case "block":
-				return eth.blockByNumber(0);
-		}
-	}
-}
diff --git a/mist/assets/ext/qt_messaging_adapter.js b/mist/assets/ext/qt_messaging_adapter.js
deleted file mode 100644
index ff6976177..000000000
--- a/mist/assets/ext/qt_messaging_adapter.js
+++ /dev/null
@@ -1,21 +0,0 @@
-window._messagingAdapter = function(data) {
-	navigator.qt.postMessage(data);
-};
-
-navigator.qt.onmessage = function(ev) {
-	var data = JSON.parse(ev.data)
-
-	if(data._event !== undefined) {
-		eth.trigger(data._event, data.data);
-	} else {
-		if(data._seed) {
-			var cb = eth._callbacks[data._seed];
-			if(cb) {
-				cb.call(this, data.data)
-
-				// Remove the "trigger" callback
-				delete eth._callbacks[ev._seed];
-			}
-		}
-	}
-}
diff --git a/mist/assets/qml/views/javascript.qml b/mist/assets/qml/views/javascript.qml
deleted file mode 100644
index ea05c4148..000000000
--- a/mist/assets/qml/views/javascript.qml
+++ /dev/null
@@ -1,45 +0,0 @@
-import QtQuick 2.0
-import QtQuick.Controls 1.0;
-import QtQuick.Layouts 1.0;
-import QtQuick.Dialogs 1.0;
-import QtQuick.Window 2.1;
-import QtQuick.Controls.Styles 1.1
-import Ethereum 1.0
-
-Rectangle {
-	property var title: "JavaScript"
-	property var iconSource: "../tx.png"
-	property var menuItem
-
-	objectName: "javascriptView"
-	visible: false
-	anchors.fill: parent
-
-	TextField {
-		id: input
-		anchors {
-			left: parent.left
-			right: parent.right
-			bottom: parent.bottom
-		}
-		height: 20
-
-		Keys.onReturnPressed: {
-			var res = eth.evalJavascriptString(this.text);
-			this.text = "";
-
-			output.append(res)
-		}
-	}
-
-	TextArea {
-		id: output
-		text: "> JSRE Ready..."
-		anchors {
-			top: parent.top
-			left: parent.left
-			right: parent.right
-			bottom: input.top
-		}
-	}
-}
diff --git a/mist/assets/qml/webapp.qml b/mist/assets/qml/webapp.qml
deleted file mode 100644
index 09e6a83ad..000000000
--- a/mist/assets/qml/webapp.qml
+++ /dev/null
@@ -1,417 +0,0 @@
-import QtQuick 2.0
-import QtWebKit 3.0
-import QtWebKit.experimental 1.0
-import QtQuick.Controls 1.0;
-import QtQuick.Controls.Styles 1.0
-import QtQuick.Layouts 1.0;
-import QtQuick.Window 2.1;
-import Ethereum 1.0
-
-import "../ext/qml_messaging.js" as Messaging
-
-//ApplicationWindow {
-	Rectangle {
-		id: window
-		property var title: "Browser"
-		property var iconSource: "../browser.png"
-		property var menuItem
-
-		property alias url: webview.url
-		property alias webView: webview
-
-		property var cleanPath: false
-		property var open: function(url) {
-			if(!window.cleanPath) {
-				var uri = url;
-				if(!/.*\:\/\/.*/.test(uri)) {
-					uri = "http://" + uri;
-				}
-
-				var reg = /(^https?\:\/\/(?:www\.)?)([a-zA-Z0-9_\-]*\.eth)(.*)/
-
-				if(reg.test(uri)) {
-					uri.replace(reg, function(match, pre, domain, path) {
-						uri = pre;
-
-						var lookup = eth.lookupDomain(domain.substring(0, domain.length - 4));
-						var ip = [];
-						for(var i = 0, l = lookup.length; i < l; i++) {
-							ip.push(lookup.charCodeAt(i))
-						}
-
-						if(ip.length != 0) {
-							uri += lookup;
-						} else {
-							uri += domain;
-						}
-
-						uri += path;
-					});
-				}
-
-				window.cleanPath = true;
-
-				webview.url = uri;
-
-				//uriNav.text = uri.text.replace(/(^https?\:\/\/(?:www\.)?)([a-zA-Z0-9_\-]*\.\w{2,3})(.*)/, "$1$2<span style='color:#CCC'>$3</span>");
-				uriNav.text = uri;
-			} else {
-				// Prevent inf loop.
-				window.cleanPath = false;
-			}
-		}
-
-		Component.onCompleted: {
-			webview.url = "http://etherian.io"
-		}
-
-		signal messages(var messages, int id);
-		onMessages: {
-			// Bit of a cheat to get proper JSON
-			var m = JSON.parse(JSON.parse(JSON.stringify(messages)))
-			webview.postEvent("messages", [m, id]);
-		}
-
-		Item {
-			objectName: "root"
-			id: root
-			anchors.fill: parent
-			state: "inspectorShown"
-
-			RowLayout {
-				id: navBar
-				height: 40
-				anchors {
-					left: parent.left
-					right: parent.right
-					leftMargin: 7
-				}
-
-				Button {
-					id: back
-					onClicked: {
-						webview.goBack()
-					}
-					style: ButtonStyle {
-						background: Image {
-							source: "../back.png"
-							width: 30
-							height: 30
-						}
-					}
-				}
-
-				TextField {
-					anchors {
-						left: back.right
-						right: toggleInspector.left
-						leftMargin: 5
-						rightMargin: 5
-					}
-					text: "http://etherian.io"
-					id: uriNav
-					y: parent.height / 2 - this.height / 2
-
-					Keys.onReturnPressed: {
-						webview.url = this.text;
-					}
-				}
-
-				Button {
-					id: toggleInspector
-					anchors {
-						right: parent.right
-					}
-					iconSource: "../bug.png"
-					onClicked: {
-						if(inspector.visible == true){
-							inspector.visible = false
-						}else{
-							inspector.visible = true
-							inspector.url = webview.experimental.remoteInspectorUrl
-						}
-					}
-				}
-			}
-
-
-			WebView {
-				objectName: "webView"
-				id: webview
-				anchors {
-					left: parent.left
-					right: parent.right
-					bottom: parent.bottom
-					top: navBar.bottom
-				}
-
-				//property var cleanPath: false
-				onNavigationRequested: {
-					window.open(request.url.toString());					
-				}
-
-				function sendMessage(data) {
-					webview.experimental.postMessage(JSON.stringify(data))
-				}
-
-				onTitleChanged: {
-					var data = Messaging.HandleMessage(title);
-					if(data) {
-						sendMessage(data)
-					}
-				}
-
-				experimental.preferences.javascriptEnabled: true
-				experimental.preferences.navigatorQtObjectEnabled: true
-				experimental.preferences.developerExtrasEnabled: true
-				experimental.userScripts: ["../ext/qt_messaging_adapter.js", "../ext/q.js", "../ext/big.js", "../ext/string.js", "../ext/html_messaging.js"]
-				experimental.onMessageReceived: {
-					console.log("[onMessageReceived]: ", message.data)
-					// TODO move to messaging.js
-					var data = JSON.parse(message.data)
-
-					try {
-						switch(data.call) {
-							case "compile":
-							postData(data._seed, eth.compile(data.args[0]))
-							break
-
-							case "getCoinBase":
-							postData(data._seed, eth.coinBase())
-
-							break
-
-							case "getIsListening":
-							postData(data._seed, eth.isListening())
-
-							break
-
-							case "getIsMining":
-							postData(data._seed, eth.isMining())
-
-							break
-
-							case "getPeerCount":
-							postData(data._seed, eth.peerCount())
-
-							break
-
-							case "getCountAt":
-							require(1)
-							postData(data._seed, eth.txCountAt(data.args[0]))
-
-							break
-
-							case "getCodeAt":
-							require(1)
-							var code = eth.codeAt(data.args[0])
-							postData(data._seed, code);
-
-							break
-
-							case "getBlockByNumber":
-							var block = eth.blockByNumber(data.args[0])
-							postData(data._seed, block)
-
-							break
-
-							case "getBlockByHash":
-							var block = eth.blockByHash(data.args[0])
-							postData(data._seed, block)
-
-							break
-
-							case "transact":
-							require(5)
-
-							var tx = eth.transact(data.args)
-							postData(data._seed, tx)
-
-							break
-
-							case "getStorageAt":
-							require(2);
-
-							var storage = eth.storageAt(data.args[0], data.args[1]);
-							postData(data._seed, storage)
-
-							break
-
-							case "call":
-							require(1);
-							var ret = eth.call(data.args)
-							postData(data._seed, ret)
-
-							break
-
-							case "getEachStorage":
-							require(1);
-							var storage = JSON.parse(eth.eachStorage(data.args[0]))
-							postData(data._seed, storage)
-
-							break
-
-							case "getTransactionsFor":
-							require(1);
-							var txs = eth.transactionsFor(data.args[0], true)
-							postData(data._seed, txs)
-
-							break
-
-							case "getBalanceAt":
-							require(1);
-
-							postData(data._seed, eth.balanceAt(data.args[0]));
-
-							break
-
-							case "getKey":
-							var key = eth.key().privateKey;
-
-							postData(data._seed, key)
-							break
-
-							case "watch":
-							require(2)
-							eth.watch(data.args[0], data.args[1])
-
-							case "disconnect":
-							require(1)
-							postData(data._seed, null)
-
-							break;
-
-							case "getSecretToAddress":
-							require(1)
-
-							var addr = eth.secretToAddress(data.args[0])
-							console.log("getsecret", addr)
-							postData(data._seed, addr)
-
-							break;
-
-							case "messages":
-							require(1);
-
-							var messages = JSON.parse(eth.getMessages(data.args[0]))
-							postData(data._seed, messages)
-
-							break
-
-							case "mutan":
-							require(1)
-
-							var code = eth.compileMutan(data.args[0])
-							postData(data._seed, "0x"+code)
-
-							break;
-
-							case "newFilterString":
-							require(1)
-							var id = eth.newFilterString(data.args[0])
-							postData(data._seed, id);
-							break;
-							case "newFilter":
-							require(1)
-							var id = eth.newFilter(data.args[0])
-
-							postData(data._seed, id);
-							break;
-
-							case "getMessages":
-							require(1);
-
-							var messages = eth.messages(data.args[0]);
-							var m = JSON.parse(JSON.parse(JSON.stringify(messages)))
-							postData(data._seed, m);
-
-							break;
-
-							case "deleteFilter":
-							require(1);
-							eth.uninstallFilter(data.args[0])
-							break;
-						}
-					} catch(e) {
-						console.log(data.call + ": " + e)
-
-						postData(data._seed, null);
-					}
-				}
-
-
-				function post(seed, data) {
-					postData(data._seed, data)
-				}
-
-				function require(args, num) {
-					if(args.length < num) {
-						throw("required argument count of "+num+" got "+args.length);
-					}
-				}
-				function postData(seed, data) {
-					webview.experimental.postMessage(JSON.stringify({data: data, _seed: seed}))
-				}
-				function postEvent(event, data) {
-					webview.experimental.postMessage(JSON.stringify({data: data, _event: event}))
-				}
-
-				function onWatchedCb(data, id) {
-					var messages = JSON.parse(data)
-					postEvent("watched:"+id, messages)
-				}
-
-				function onNewBlockCb(block) {
-					postEvent("block:new", block)
-				}
-				function onObjectChangeCb(stateObject) {
-					postEvent("object:"+stateObject.address(), stateObject)
-				}
-				function onStorageChangeCb(storageObject) {
-					var ev = ["storage", storageObject.stateAddress, storageObject.address].join(":");
-					postEvent(ev, [storageObject.address, storageObject.value])
-				}
-			}
-
-
-			Rectangle {
-				id: sizeGrip
-				color: "gray"
-				visible: false
-				height: 10
-				anchors {
-					left: root.left
-					right: root.right
-				}
-				y: Math.round(root.height * 2 / 3)
-
-				MouseArea {
-					anchors.fill: parent
-					drag.target: sizeGrip
-					drag.minimumY: 0
-					drag.maximumY: root.height
-					drag.axis: Drag.YAxis
-				}
-			}
-
-			WebView {
-				id: inspector
-				visible: false
-				anchors {
-					left: root.left
-					right: root.right
-					top: sizeGrip.bottom
-					bottom: root.bottom
-				}
-			}
-
-			states: [
-				State {
-					name: "inspectorShown"
-					PropertyChanges {
-						target: inspector
-					}
-				}
-			]
-		}
-	}
diff --git a/mist/errors.go b/mist/errors.go
deleted file mode 100644
index 409b7a281..000000000
--- a/mist/errors.go
+++ /dev/null
@@ -1,36 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-
-	"gopkg.in/qml.v1"
-)
-
-func ErrorWindow(err error) {
-	engine := qml.NewEngine()
-	component, e := engine.LoadString("local", qmlErr)
-	if e != nil {
-		fmt.Println("err:", err)
-		os.Exit(1)
-	}
-
-	win := component.CreateWindow(nil)
-	win.Root().ObjectByName("label").Set("text", err.Error())
-	win.Show()
-	win.Wait()
-}
-
-const qmlErr = `
-import QtQuick 2.0; import QtQuick.Controls 1.0;
-ApplicationWindow {
-	width: 600; height: 150;
-	flags: Qt.CustomizeWindowHint | Qt.WindowTitleHint | Qt.WindowCloseButtonHint
-	title: "Error"
-	Text {
-		x: parent.width / 2 - this.width / 2;
-		y: parent.height / 2 - this.height / 2;
-		objectName: "label";
-	}
-}
-`
diff --git a/mist/ext_app.go b/mist/ext_app.go
deleted file mode 100644
index 514084c97..000000000
--- a/mist/ext_app.go
+++ /dev/null
@@ -1,145 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethpipe"
-	"github.com/ethereum/eth-go/ethreact"
-	"github.com/ethereum/eth-go/ethstate"
-	"github.com/ethereum/go-ethereum/javascript"
-	"gopkg.in/qml.v1"
-)
-
-type AppContainer interface {
-	Create() error
-	Destroy()
-
-	Window() *qml.Window
-	Engine() *qml.Engine
-
-	NewBlock(*ethchain.Block)
-	NewWatcher(chan bool)
-	Messages(ethstate.Messages, string)
-	Post(string, int)
-}
-
-type ExtApplication struct {
-	*ethpipe.JSPipe
-	eth ethchain.EthManager
-
-	blockChan       chan ethreact.Event
-	messageChan     chan ethreact.Event
-	quitChan        chan bool
-	watcherQuitChan chan bool
-
-	filters map[string]*ethchain.Filter
-
-	container AppContainer
-	lib       *UiLib
-}
-
-func NewExtApplication(container AppContainer, lib *UiLib) *ExtApplication {
-	app := &ExtApplication{
-		ethpipe.NewJSPipe(lib.eth),
-		lib.eth,
-		make(chan ethreact.Event, 100),
-		make(chan ethreact.Event, 100),
-		make(chan bool),
-		make(chan bool),
-		make(map[string]*ethchain.Filter),
-		container,
-		lib,
-	}
-
-	return app
-}
-
-func (app *ExtApplication) run() {
-	// Set the "eth" api on to the containers context
-	context := app.container.Engine().Context()
-	context.SetVar("eth", app)
-	context.SetVar("ui", app.lib)
-
-	err := app.container.Create()
-	if err != nil {
-		logger.Errorln(err)
-		return
-	}
-
-	// Call the main loop
-	go app.mainLoop()
-
-	// Subscribe to events
-	reactor := app.lib.eth.Reactor()
-	reactor.Subscribe("newBlock", app.blockChan)
-	reactor.Subscribe("messages", app.messageChan)
-
-	app.container.NewWatcher(app.watcherQuitChan)
-
-	win := app.container.Window()
-	win.Show()
-	win.Wait()
-
-	app.stop()
-}
-
-func (app *ExtApplication) stop() {
-	// Clean up
-	reactor := app.lib.eth.Reactor()
-	reactor.Unsubscribe("newBlock", app.blockChan)
-
-	// Kill the main loop
-	app.quitChan <- true
-	app.watcherQuitChan <- true
-
-	close(app.blockChan)
-	close(app.quitChan)
-
-	app.container.Destroy()
-}
-
-func (app *ExtApplication) mainLoop() {
-out:
-	for {
-		select {
-		case <-app.quitChan:
-			break out
-		case block := <-app.blockChan:
-			if block, ok := block.Resource.(*ethchain.Block); ok {
-				app.container.NewBlock(block)
-			}
-		case msg := <-app.messageChan:
-			if messages, ok := msg.Resource.(ethstate.Messages); ok {
-				for id, filter := range app.filters {
-					msgs := filter.FilterMessages(messages)
-					if len(msgs) > 0 {
-						app.container.Messages(msgs, id)
-					}
-				}
-			}
-		}
-	}
-
-}
-
-func (self *ExtApplication) Watch(filterOptions map[string]interface{}, identifier string) {
-	self.filters[identifier] = ethchain.NewFilterFromMap(filterOptions, self.eth)
-}
-
-func (self *ExtApplication) GetMessages(object map[string]interface{}) string {
-	filter := ethchain.NewFilterFromMap(object, self.eth)
-
-	messages := filter.Find()
-	var msgs []javascript.JSMessage
-	for _, m := range messages {
-		msgs = append(msgs, javascript.NewJSMessage(m))
-	}
-
-	b, err := json.Marshal(msgs)
-	if err != nil {
-		return "{\"error\":" + err.Error() + "}"
-	}
-
-	return string(b)
-}
diff --git a/mist/qml_container.go b/mist/qml_container.go
deleted file mode 100644
index 85bd7c699..000000000
--- a/mist/qml_container.go
+++ /dev/null
@@ -1,68 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"runtime"
-
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethpipe"
-	"github.com/ethereum/eth-go/ethstate"
-	"github.com/ethereum/eth-go/ethutil"
-	"gopkg.in/qml.v1"
-)
-
-type QmlApplication struct {
-	win    *qml.Window
-	engine *qml.Engine
-	lib    *UiLib
-	path   string
-}
-
-func NewQmlApplication(path string, lib *UiLib) *QmlApplication {
-	engine := qml.NewEngine()
-	return &QmlApplication{engine: engine, path: path, lib: lib}
-}
-
-func (app *QmlApplication) Create() error {
-	path := string(app.path)
-
-	// For some reason for windows we get /c:/path/to/something, windows doesn't like the first slash but is fine with the others so we are removing it
-	if app.path[0] == '/' && runtime.GOOS == "windows" {
-		path = app.path[1:]
-	}
-
-	component, err := app.engine.LoadFile(path)
-	if err != nil {
-		logger.Warnln(err)
-	}
-	app.win = component.CreateWindow(nil)
-
-	return nil
-}
-
-func (app *QmlApplication) Destroy() {
-	app.engine.Destroy()
-}
-
-func (app *QmlApplication) NewWatcher(quitChan chan bool) {
-}
-
-// Events
-func (app *QmlApplication) NewBlock(block *ethchain.Block) {
-	pblock := &ethpipe.JSBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Bytes2Hex(block.Hash())}
-	app.win.Call("onNewBlockCb", pblock)
-}
-
-func (self *QmlApplication) Messages(msgs ethstate.Messages, id string) {
-	fmt.Println("IMPLEMENT QML APPLICATION MESSAGES METHOD")
-}
-
-// Getters
-func (app *QmlApplication) Engine() *qml.Engine {
-	return app.engine
-}
-func (app *QmlApplication) Window() *qml.Window {
-	return app.win
-}
-
-func (app *QmlApplication) Post(data string, s int) {}
diff --git a/nat.go b/nat.go
new file mode 100644
index 000000000..999308eb2
--- /dev/null
+++ b/nat.go
@@ -0,0 +1,12 @@
+package eth
+
+import (
+	"net"
+)
+
+// protocol is either "udp" or "tcp"
+type NAT interface {
+	GetExternalAddress() (addr net.IP, err error)
+	AddPortMapping(protocol string, externalPort, internalPort int, description string, timeout int) (mappedExternalPort int, err error)
+	DeletePortMapping(protocol string, externalPort, internalPort int) (err error)
+}
diff --git a/natpmp.go b/natpmp.go
new file mode 100644
index 000000000..489342a4b
--- /dev/null
+++ b/natpmp.go
@@ -0,0 +1,55 @@
+package eth
+
+import (
+	"fmt"
+	"net"
+
+	natpmp "github.com/jackpal/go-nat-pmp"
+)
+
+// Adapt the NAT-PMP protocol to the NAT interface
+
+// TODO:
+//  + Register for changes to the external address.
+//  + Re-register port mapping when router reboots.
+//  + A mechanism for keeping a port mapping registered.
+
+type natPMPClient struct {
+	client *natpmp.Client
+}
+
+func NewNatPMP(gateway net.IP) (nat NAT) {
+	return &natPMPClient{natpmp.NewClient(gateway)}
+}
+
+func (n *natPMPClient) GetExternalAddress() (addr net.IP, err error) {
+	response, err := n.client.GetExternalAddress()
+	if err != nil {
+		return
+	}
+	ip := response.ExternalIPAddress
+	addr = net.IPv4(ip[0], ip[1], ip[2], ip[3])
+	return
+}
+
+func (n *natPMPClient) AddPortMapping(protocol string, externalPort, internalPort int,
+	description string, timeout int) (mappedExternalPort int, err error) {
+	if timeout <= 0 {
+		err = fmt.Errorf("timeout must not be <= 0")
+		return
+	}
+	// Note order of port arguments is switched between our AddPortMapping and the client's AddPortMapping.
+	response, err := n.client.AddPortMapping(protocol, internalPort, externalPort, timeout)
+	if err != nil {
+		return
+	}
+	mappedExternalPort = int(response.MappedExternalPort)
+	return
+}
+
+func (n *natPMPClient) DeletePortMapping(protocol string, externalPort, internalPort int) (err error) {
+	// To destroy a mapping, send an add-port with
+	// an internalPort of the internal port to destroy, an external port of zero and a time of zero.
+	_, err = n.client.AddPortMapping(protocol, internalPort, 0, 0)
+	return
+}
diff --git a/natupnp.go b/natupnp.go
new file mode 100644
index 000000000..c7f9eeb62
--- /dev/null
+++ b/natupnp.go
@@ -0,0 +1,338 @@
+package eth
+
+// Just enough UPnP to be able to forward ports
+//
+
+import (
+	"bytes"
+	"encoding/xml"
+	"errors"
+	"net"
+	"net/http"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type upnpNAT struct {
+	serviceURL string
+	ourIP      string
+}
+
+func Discover() (nat NAT, err error) {
+	ssdp, err := net.ResolveUDPAddr("udp4", "239.255.255.250:1900")
+	if err != nil {
+		return
+	}
+	conn, err := net.ListenPacket("udp4", ":0")
+	if err != nil {
+		return
+	}
+	socket := conn.(*net.UDPConn)
+	defer socket.Close()
+
+	err = socket.SetDeadline(time.Now().Add(10 * time.Second))
+	if err != nil {
+		return
+	}
+
+	st := "ST: urn:schemas-upnp-org:device:InternetGatewayDevice:1\r\n"
+	buf := bytes.NewBufferString(
+		"M-SEARCH * HTTP/1.1\r\n" +
+			"HOST: 239.255.255.250:1900\r\n" +
+			st +
+			"MAN: \"ssdp:discover\"\r\n" +
+			"MX: 2\r\n\r\n")
+	message := buf.Bytes()
+	answerBytes := make([]byte, 1024)
+	for i := 0; i < 3; i++ {
+		_, err = socket.WriteToUDP(message, ssdp)
+		if err != nil {
+			return
+		}
+		var n int
+		n, _, err = socket.ReadFromUDP(answerBytes)
+		if err != nil {
+			continue
+			// socket.Close()
+			// return
+		}
+		answer := string(answerBytes[0:n])
+		if strings.Index(answer, "\r\n"+st) < 0 {
+			continue
+		}
+		// HTTP header field names are case-insensitive.
+		// http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2
+		locString := "\r\nlocation: "
+		answer = strings.ToLower(answer)
+		locIndex := strings.Index(answer, locString)
+		if locIndex < 0 {
+			continue
+		}
+		loc := answer[locIndex+len(locString):]
+		endIndex := strings.Index(loc, "\r\n")
+		if endIndex < 0 {
+			continue
+		}
+		locURL := loc[0:endIndex]
+		var serviceURL string
+		serviceURL, err = getServiceURL(locURL)
+		if err != nil {
+			return
+		}
+		var ourIP string
+		ourIP, err = getOurIP()
+		if err != nil {
+			return
+		}
+		nat = &upnpNAT{serviceURL: serviceURL, ourIP: ourIP}
+		return
+	}
+	err = errors.New("UPnP port discovery failed.")
+	return
+}
+
+// service represents the Service type in an UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type service struct {
+	ServiceType string `xml:"serviceType"`
+	ControlURL  string `xml:"controlURL"`
+}
+
+// deviceList represents the deviceList type in an UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type deviceList struct {
+	XMLName xml.Name `xml:"deviceList"`
+	Device  []device `xml:"device"`
+}
+
+// serviceList represents the serviceList type in an UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type serviceList struct {
+	XMLName xml.Name  `xml:"serviceList"`
+	Service []service `xml:"service"`
+}
+
+// device represents the device type in an UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type device struct {
+	XMLName     xml.Name    `xml:"device"`
+	DeviceType  string      `xml:"deviceType"`
+	DeviceList  deviceList  `xml:"deviceList"`
+	ServiceList serviceList `xml:"serviceList"`
+}
+
+// specVersion represents the specVersion in a UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type specVersion struct {
+	XMLName xml.Name `xml:"specVersion"`
+	Major   int      `xml:"major"`
+	Minor   int      `xml:"minor"`
+}
+
+// root represents the Root document for a UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type root struct {
+	XMLName     xml.Name `xml:"root"`
+	SpecVersion specVersion
+	Device      device
+}
+
+func getChildDevice(d *device, deviceType string) *device {
+	dl := d.DeviceList.Device
+	for i := 0; i < len(dl); i++ {
+		if dl[i].DeviceType == deviceType {
+			return &dl[i]
+		}
+	}
+	return nil
+}
+
+func getChildService(d *device, serviceType string) *service {
+	sl := d.ServiceList.Service
+	for i := 0; i < len(sl); i++ {
+		if sl[i].ServiceType == serviceType {
+			return &sl[i]
+		}
+	}
+	return nil
+}
+
+func getOurIP() (ip string, err error) {
+	hostname, err := os.Hostname()
+	if err != nil {
+		return
+	}
+	p, err := net.LookupIP(hostname)
+	if err != nil && len(p) > 0 {
+		return
+	}
+	return p[0].String(), nil
+}
+
+func getServiceURL(rootURL string) (url string, err error) {
+	r, err := http.Get(rootURL)
+	if err != nil {
+		return
+	}
+	defer r.Body.Close()
+	if r.StatusCode >= 400 {
+		err = errors.New(string(r.StatusCode))
+		return
+	}
+	var root root
+	err = xml.NewDecoder(r.Body).Decode(&root)
+
+	if err != nil {
+		return
+	}
+	a := &root.Device
+	if a.DeviceType != "urn:schemas-upnp-org:device:InternetGatewayDevice:1" {
+		err = errors.New("No InternetGatewayDevice")
+		return
+	}
+	b := getChildDevice(a, "urn:schemas-upnp-org:device:WANDevice:1")
+	if b == nil {
+		err = errors.New("No WANDevice")
+		return
+	}
+	c := getChildDevice(b, "urn:schemas-upnp-org:device:WANConnectionDevice:1")
+	if c == nil {
+		err = errors.New("No WANConnectionDevice")
+		return
+	}
+	d := getChildService(c, "urn:schemas-upnp-org:service:WANIPConnection:1")
+	if d == nil {
+		err = errors.New("No WANIPConnection")
+		return
+	}
+	url = combineURL(rootURL, d.ControlURL)
+	return
+}
+
+func combineURL(rootURL, subURL string) string {
+	protocolEnd := "://"
+	protoEndIndex := strings.Index(rootURL, protocolEnd)
+	a := rootURL[protoEndIndex+len(protocolEnd):]
+	rootIndex := strings.Index(a, "/")
+	return rootURL[0:protoEndIndex+len(protocolEnd)+rootIndex] + subURL
+}
+
+func soapRequest(url, function, message string) (r *http.Response, err error) {
+	fullMessage := "<?xml version=\"1.0\" ?>" +
+		"<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">\r\n" +
+		"<s:Body>" + message + "</s:Body></s:Envelope>"
+
+	req, err := http.NewRequest("POST", url, strings.NewReader(fullMessage))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Content-Type", "text/xml ; charset=\"utf-8\"")
+	req.Header.Set("User-Agent", "Darwin/10.0.0, UPnP/1.0, MiniUPnPc/1.3")
+	//req.Header.Set("Transfer-Encoding", "chunked")
+	req.Header.Set("SOAPAction", "\"urn:schemas-upnp-org:service:WANIPConnection:1#"+function+"\"")
+	req.Header.Set("Connection", "Close")
+	req.Header.Set("Cache-Control", "no-cache")
+	req.Header.Set("Pragma", "no-cache")
+
+	// log.Stderr("soapRequest ", req)
+	//fmt.Println(fullMessage)
+
+	r, err = http.DefaultClient.Do(req)
+	if err != nil {
+		return
+	}
+
+	if r.Body != nil {
+		defer r.Body.Close()
+	}
+
+	if r.StatusCode >= 400 {
+		// log.Stderr(function, r.StatusCode)
+		err = errors.New("Error " + strconv.Itoa(r.StatusCode) + " for " + function)
+		r = nil
+		return
+	}
+	return
+}
+
+type statusInfo struct {
+	externalIpAddress string
+}
+
+func (n *upnpNAT) getStatusInfo() (info statusInfo, err error) {
+
+	message := "<u:GetStatusInfo xmlns:u=\"urn:schemas-upnp-org:service:WANIPConnection:1\">\r\n" +
+		"</u:GetStatusInfo>"
+
+	var response *http.Response
+	response, err = soapRequest(n.serviceURL, "GetStatusInfo", message)
+	if err != nil {
+		return
+	}
+
+	// TODO: Write a soap reply parser. It has to eat the Body and envelope tags...
+
+	response.Body.Close()
+	return
+}
+
+func (n *upnpNAT) GetExternalAddress() (addr net.IP, err error) {
+	info, err := n.getStatusInfo()
+	if err != nil {
+		return
+	}
+	addr = net.ParseIP(info.externalIpAddress)
+	return
+}
+
+func (n *upnpNAT) AddPortMapping(protocol string, externalPort, internalPort int, description string, timeout int) (mappedExternalPort int, err error) {
+	// A single concatenation would break ARM compilation.
+	message := "<u:AddPortMapping xmlns:u=\"urn:schemas-upnp-org:service:WANIPConnection:1\">\r\n" +
+		"<NewRemoteHost></NewRemoteHost><NewExternalPort>" + strconv.Itoa(externalPort)
+	message += "</NewExternalPort><NewProtocol>" + protocol + "</NewProtocol>"
+	message += "<NewInternalPort>" + strconv.Itoa(internalPort) + "</NewInternalPort>" +
+		"<NewInternalClient>" + n.ourIP + "</NewInternalClient>" +
+		"<NewEnabled>1</NewEnabled><NewPortMappingDescription>"
+	message += description +
+		"</NewPortMappingDescription><NewLeaseDuration>" + strconv.Itoa(timeout) +
+		"</NewLeaseDuration></u:AddPortMapping>"
+
+	var response *http.Response
+	response, err = soapRequest(n.serviceURL, "AddPortMapping", message)
+	if err != nil {
+		return
+	}
+
+	// TODO: check response to see if the port was forwarded
+	// log.Println(message, response)
+	mappedExternalPort = externalPort
+	_ = response
+	return
+}
+
+func (n *upnpNAT) DeletePortMapping(protocol string, externalPort, internalPort int) (err error) {
+
+	message := "<u:DeletePortMapping xmlns:u=\"urn:schemas-upnp-org:service:WANIPConnection:1\">\r\n" +
+		"<NewRemoteHost></NewRemoteHost><NewExternalPort>" + strconv.Itoa(externalPort) +
+		"</NewExternalPort><NewProtocol>" + protocol + "</NewProtocol>" +
+		"</u:DeletePortMapping>"
+
+	var response *http.Response
+	response, err = soapRequest(n.serviceURL, "DeletePortMapping", message)
+	if err != nil {
+		return
+	}
+
+	// TODO: check response to see if the port was deleted
+	// log.Println(message, response)
+	_ = response
+	return
+}
diff --git a/p2p/client_identity.go b/p2p/client_identity.go
new file mode 100644
index 000000000..bc865b63b
--- /dev/null
+++ b/p2p/client_identity.go
@@ -0,0 +1,63 @@
+package p2p
+
+import (
+	"fmt"
+	"runtime"
+)
+
+// ClientIdentity represents the identity of a peer.
+type ClientIdentity interface {
+	String() string // human readable identity
+	Pubkey() []byte // 512-bit public key
+}
+
+type SimpleClientIdentity struct {
+	clientIdentifier string
+	version          string
+	customIdentifier string
+	os               string
+	implementation   string
+	pubkey           string
+}
+
+func NewSimpleClientIdentity(clientIdentifier string, version string, customIdentifier string, pubkey string) *SimpleClientIdentity {
+	clientIdentity := &SimpleClientIdentity{
+		clientIdentifier: clientIdentifier,
+		version:          version,
+		customIdentifier: customIdentifier,
+		os:               runtime.GOOS,
+		implementation:   runtime.Version(),
+		pubkey:           pubkey,
+	}
+
+	return clientIdentity
+}
+
+func (c *SimpleClientIdentity) init() {
+}
+
+func (c *SimpleClientIdentity) String() string {
+	var id string
+	if len(c.customIdentifier) > 0 {
+		id = "/" + c.customIdentifier
+	}
+
+	return fmt.Sprintf("%s/v%s%s/%s/%s",
+		c.clientIdentifier,
+		c.version,
+		id,
+		c.os,
+		c.implementation)
+}
+
+func (c *SimpleClientIdentity) Pubkey() []byte {
+	return []byte(c.pubkey)
+}
+
+func (c *SimpleClientIdentity) SetCustomIdentifier(customIdentifier string) {
+	c.customIdentifier = customIdentifier
+}
+
+func (c *SimpleClientIdentity) GetCustomIdentifier() string {
+	return c.customIdentifier
+}
diff --git a/p2p/client_identity_test.go b/p2p/client_identity_test.go
new file mode 100644
index 000000000..40b0e6f5e
--- /dev/null
+++ b/p2p/client_identity_test.go
@@ -0,0 +1,30 @@
+package p2p
+
+import (
+	"fmt"
+	"runtime"
+	"testing"
+)
+
+func TestClientIdentity(t *testing.T) {
+	clientIdentity := NewSimpleClientIdentity("Ethereum(G)", "0.5.16", "test", "pubkey")
+	clientString := clientIdentity.String()
+	expected := fmt.Sprintf("Ethereum(G)/v0.5.16/test/%s/%s", runtime.GOOS, runtime.Version())
+	if clientString != expected {
+		t.Errorf("Expected clientIdentity to be %v, got %v", expected, clientString)
+	}
+	customIdentifier := clientIdentity.GetCustomIdentifier()
+	if customIdentifier != "test" {
+		t.Errorf("Expected clientIdentity.GetCustomIdentifier() to be 'test', got %v", customIdentifier)
+	}
+	clientIdentity.SetCustomIdentifier("test2")
+	customIdentifier = clientIdentity.GetCustomIdentifier()
+	if customIdentifier != "test2" {
+		t.Errorf("Expected clientIdentity.GetCustomIdentifier() to be 'test2', got %v", customIdentifier)
+	}
+	clientString = clientIdentity.String()
+	expected = fmt.Sprintf("Ethereum(G)/v0.5.16/test2/%s/%s", runtime.GOOS, runtime.Version())
+	if clientString != expected {
+		t.Errorf("Expected clientIdentity to be %v, got %v", expected, clientString)
+	}
+}
diff --git a/p2p/message.go b/p2p/message.go
new file mode 100644
index 000000000..f5418ff47
--- /dev/null
+++ b/p2p/message.go
@@ -0,0 +1,232 @@
+package p2p
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+	"io"
+	"io/ioutil"
+	"math/big"
+	"sync/atomic"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/rlp"
+)
+
+// Msg defines the structure of a p2p message.
+//
+// Note that a Msg can only be sent once since the Payload reader is
+// consumed during sending. It is not possible to create a Msg and
+// send it any number of times. If you want to reuse an encoded
+// structure, encode the payload into a byte array and create a
+// separate Msg with a bytes.Reader as Payload for each send.
+type Msg struct {
+	Code    uint64
+	Size    uint32 // size of the paylod
+	Payload io.Reader
+}
+
+// NewMsg creates an RLP-encoded message with the given code.
+func NewMsg(code uint64, params ...interface{}) Msg {
+	buf := new(bytes.Buffer)
+	for _, p := range params {
+		buf.Write(ethutil.Encode(p))
+	}
+	return Msg{Code: code, Size: uint32(buf.Len()), Payload: buf}
+}
+
+func encodePayload(params ...interface{}) []byte {
+	buf := new(bytes.Buffer)
+	for _, p := range params {
+		buf.Write(ethutil.Encode(p))
+	}
+	return buf.Bytes()
+}
+
+// Decode parse the RLP content of a message into
+// the given value, which must be a pointer.
+//
+// For the decoding rules, please see package rlp.
+func (msg Msg) Decode(val interface{}) error {
+	s := rlp.NewListStream(msg.Payload, uint64(msg.Size))
+	return s.Decode(val)
+}
+
+// Discard reads any remaining payload data into a black hole.
+func (msg Msg) Discard() error {
+	_, err := io.Copy(ioutil.Discard, msg.Payload)
+	return err
+}
+
+type MsgReader interface {
+	ReadMsg() (Msg, error)
+}
+
+type MsgWriter interface {
+	// WriteMsg sends an existing message.
+	// The Payload reader of the message is consumed.
+	// Note that messages can be sent only once.
+	WriteMsg(Msg) error
+
+	// EncodeMsg writes an RLP-encoded message with the given
+	// code and data elements.
+	EncodeMsg(code uint64, data ...interface{}) error
+}
+
+// MsgReadWriter provides reading and writing of encoded messages.
+type MsgReadWriter interface {
+	MsgReader
+	MsgWriter
+}
+
+var magicToken = []byte{34, 64, 8, 145}
+
+func writeMsg(w io.Writer, msg Msg) error {
+	// TODO: handle case when Size + len(code) + len(listhdr) overflows uint32
+	code := ethutil.Encode(uint32(msg.Code))
+	listhdr := makeListHeader(msg.Size + uint32(len(code)))
+	payloadLen := uint32(len(listhdr)) + uint32(len(code)) + msg.Size
+
+	start := make([]byte, 8)
+	copy(start, magicToken)
+	binary.BigEndian.PutUint32(start[4:], payloadLen)
+
+	for _, b := range [][]byte{start, listhdr, code} {
+		if _, err := w.Write(b); err != nil {
+			return err
+		}
+	}
+	_, err := io.CopyN(w, msg.Payload, int64(msg.Size))
+	return err
+}
+
+func makeListHeader(length uint32) []byte {
+	if length < 56 {
+		return []byte{byte(length + 0xc0)}
+	}
+	enc := big.NewInt(int64(length)).Bytes()
+	lenb := byte(len(enc)) + 0xf7
+	return append([]byte{lenb}, enc...)
+}
+
+// readMsg reads a message header from r.
+// It takes an rlp.ByteReader to ensure that the decoding doesn't buffer.
+func readMsg(r rlp.ByteReader) (msg Msg, err error) {
+	// read magic and payload size
+	start := make([]byte, 8)
+	if _, err = io.ReadFull(r, start); err != nil {
+		return msg, newPeerError(errRead, "%v", err)
+	}
+	if !bytes.HasPrefix(start, magicToken) {
+		return msg, newPeerError(errMagicTokenMismatch, "got %x, want %x", start[:4], magicToken)
+	}
+	size := binary.BigEndian.Uint32(start[4:])
+
+	// decode start of RLP message to get the message code
+	posr := &postrack{r, 0}
+	s := rlp.NewStream(posr)
+	if _, err := s.List(); err != nil {
+		return msg, err
+	}
+	code, err := s.Uint()
+	if err != nil {
+		return msg, err
+	}
+	payloadsize := size - posr.p
+	return Msg{code, payloadsize, io.LimitReader(r, int64(payloadsize))}, nil
+}
+
+// postrack wraps an rlp.ByteReader with a position counter.
+type postrack struct {
+	r rlp.ByteReader
+	p uint32
+}
+
+func (r *postrack) Read(buf []byte) (int, error) {
+	n, err := r.r.Read(buf)
+	r.p += uint32(n)
+	return n, err
+}
+
+func (r *postrack) ReadByte() (byte, error) {
+	b, err := r.r.ReadByte()
+	if err == nil {
+		r.p++
+	}
+	return b, err
+}
+
+// MsgPipe creates a message pipe. Reads on one end are matched
+// with writes on the other. The pipe is full-duplex, both ends
+// implement MsgReadWriter.
+func MsgPipe() (*MsgPipeRW, *MsgPipeRW) {
+	var (
+		c1, c2  = make(chan Msg), make(chan Msg)
+		closing = make(chan struct{})
+		closed  = new(int32)
+		rw1     = &MsgPipeRW{c1, c2, closing, closed}
+		rw2     = &MsgPipeRW{c2, c1, closing, closed}
+	)
+	return rw1, rw2
+}
+
+// ErrPipeClosed is returned from pipe operations after the
+// pipe has been closed.
+var ErrPipeClosed = errors.New("p2p: read or write on closed message pipe")
+
+// MsgPipeRW is an endpoint of a MsgReadWriter pipe.
+type MsgPipeRW struct {
+	w       chan<- Msg
+	r       <-chan Msg
+	closing chan struct{}
+	closed  *int32
+}
+
+// WriteMsg sends a messsage on the pipe.
+// It blocks until the receiver has consumed the message payload.
+func (p *MsgPipeRW) WriteMsg(msg Msg) error {
+	if atomic.LoadInt32(p.closed) == 0 {
+		consumed := make(chan struct{}, 1)
+		msg.Payload = &eofSignal{msg.Payload, int64(msg.Size), consumed}
+		select {
+		case p.w <- msg:
+			if msg.Size > 0 {
+				// wait for payload read or discard
+				<-consumed
+			}
+			return nil
+		case <-p.closing:
+		}
+	}
+	return ErrPipeClosed
+}
+
+// EncodeMsg is a convenient shorthand for sending an RLP-encoded message.
+func (p *MsgPipeRW) EncodeMsg(code uint64, data ...interface{}) error {
+	return p.WriteMsg(NewMsg(code, data...))
+}
+
+// ReadMsg returns a message sent on the other end of the pipe.
+func (p *MsgPipeRW) ReadMsg() (Msg, error) {
+	if atomic.LoadInt32(p.closed) == 0 {
+		select {
+		case msg := <-p.r:
+			return msg, nil
+		case <-p.closing:
+		}
+	}
+	return Msg{}, ErrPipeClosed
+}
+
+// Close unblocks any pending ReadMsg and WriteMsg calls on both ends
+// of the pipe. They will return ErrPipeClosed. Note that Close does
+// not interrupt any reads from a message payload.
+func (p *MsgPipeRW) Close() error {
+	if atomic.AddInt32(p.closed, 1) != 1 {
+		// someone else is already closing
+		atomic.StoreInt32(p.closed, 1) // avoid overflow
+		return nil
+	}
+	close(p.closing)
+	return nil
+}
diff --git a/p2p/message_test.go b/p2p/message_test.go
new file mode 100644
index 000000000..066d2516d
--- /dev/null
+++ b/p2p/message_test.go
@@ -0,0 +1,133 @@
+package p2p
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"runtime"
+	"testing"
+	"time"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+func TestNewMsg(t *testing.T) {
+	msg := NewMsg(3, 1, "000")
+	if msg.Code != 3 {
+		t.Errorf("incorrect code %d, want %d", msg.Code)
+	}
+	if msg.Size != 5 {
+		t.Errorf("incorrect size %d, want %d", msg.Size, 5)
+	}
+	pl, _ := ioutil.ReadAll(msg.Payload)
+	expect := []byte{0x01, 0x83, 0x30, 0x30, 0x30}
+	if !bytes.Equal(pl, expect) {
+		t.Errorf("incorrect payload content, got %x, want %x", pl, expect)
+	}
+}
+
+func TestEncodeDecodeMsg(t *testing.T) {
+	msg := NewMsg(3, 1, "000")
+	buf := new(bytes.Buffer)
+	if err := writeMsg(buf, msg); err != nil {
+		t.Fatalf("encodeMsg error: %v", err)
+	}
+	// t.Logf("encoded: %x", buf.Bytes())
+
+	decmsg, err := readMsg(buf)
+	if err != nil {
+		t.Fatalf("readMsg error: %v", err)
+	}
+	if decmsg.Code != 3 {
+		t.Errorf("incorrect code %d, want %d", decmsg.Code, 3)
+	}
+	if decmsg.Size != 5 {
+		t.Errorf("incorrect size %d, want %d", decmsg.Size, 5)
+	}
+
+	var data struct {
+		I uint
+		S string
+	}
+	if err := decmsg.Decode(&data); err != nil {
+		t.Fatalf("Decode error: %v", err)
+	}
+	if data.I != 1 {
+		t.Errorf("incorrect data.I: got %v, expected %d", data.I, 1)
+	}
+	if data.S != "000" {
+		t.Errorf("incorrect data.S: got %q, expected %q", data.S, "000")
+	}
+}
+
+func TestDecodeRealMsg(t *testing.T) {
+	data := ethutil.Hex2Bytes("2240089100000080f87e8002b5457468657265756d282b2b292f5065657220536572766572204f6e652f76302e372e382f52656c656173652f4c696e75782f672b2bc082765fb84086dd80b7aefd6a6d2e3b93f4f300a86bfb6ef7bdc97cb03f793db6bb")
+	msg, err := readMsg(bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if msg.Code != 0 {
+		t.Errorf("incorrect code %d, want %d", msg.Code, 0)
+	}
+}
+
+func ExampleMsgPipe() {
+	rw1, rw2 := MsgPipe()
+	go func() {
+		rw1.EncodeMsg(8, []byte{0, 0})
+		rw1.EncodeMsg(5, []byte{1, 1})
+		rw1.Close()
+	}()
+
+	for {
+		msg, err := rw2.ReadMsg()
+		if err != nil {
+			break
+		}
+		var data [1][]byte
+		msg.Decode(&data)
+		fmt.Printf("msg: %d, %x\n", msg.Code, data[0])
+	}
+	// Output:
+	// msg: 8, 0000
+	// msg: 5, 0101
+}
+
+func TestMsgPipeUnblockWrite(t *testing.T) {
+loop:
+	for i := 0; i < 100; i++ {
+		rw1, rw2 := MsgPipe()
+		done := make(chan struct{})
+		go func() {
+			if err := rw1.EncodeMsg(1); err == nil {
+				t.Error("EncodeMsg returned nil error")
+			} else if err != ErrPipeClosed {
+				t.Error("EncodeMsg returned wrong error: got %v, want %v", err, ErrPipeClosed)
+			}
+			close(done)
+		}()
+
+		// this call should ensure that EncodeMsg is waiting to
+		// deliver sometimes. if this isn't done, Close is likely to
+		// be executed before EncodeMsg starts and then we won't test
+		// all the cases.
+		runtime.Gosched()
+
+		rw2.Close()
+		select {
+		case <-done:
+		case <-time.After(200 * time.Millisecond):
+			t.Errorf("write didn't unblock")
+			break loop
+		}
+	}
+}
+
+// This test should panic if concurrent close isn't implemented correctly.
+func TestMsgPipeConcurrentClose(t *testing.T) {
+	rw1, _ := MsgPipe()
+	for i := 0; i < 10; i++ {
+		go rw1.Close()
+	}
+}
diff --git a/p2p/natpmp.go b/p2p/natpmp.go
new file mode 100644
index 000000000..6714678c4
--- /dev/null
+++ b/p2p/natpmp.go
@@ -0,0 +1,55 @@
+package p2p
+
+import (
+	"fmt"
+	"net"
+	"time"
+
+	natpmp "github.com/jackpal/go-nat-pmp"
+)
+
+// Adapt the NAT-PMP protocol to the NAT interface
+
+// TODO:
+//  + Register for changes to the external address.
+//  + Re-register port mapping when router reboots.
+//  + A mechanism for keeping a port mapping registered.
+//  + Discover gateway address automatically.
+
+type natPMPClient struct {
+	client *natpmp.Client
+}
+
+// PMP returns a NAT traverser that uses NAT-PMP. The provided gateway
+// address should be the IP of your router.
+func PMP(gateway net.IP) (nat NAT) {
+	return &natPMPClient{natpmp.NewClient(gateway)}
+}
+
+func (*natPMPClient) String() string {
+	return "NAT-PMP"
+}
+
+func (n *natPMPClient) GetExternalAddress() (net.IP, error) {
+	response, err := n.client.GetExternalAddress()
+	if err != nil {
+		return nil, err
+	}
+	return response.ExternalIPAddress[:], nil
+}
+
+func (n *natPMPClient) AddPortMapping(protocol string, extport, intport int, name string, lifetime time.Duration) error {
+	if lifetime <= 0 {
+		return fmt.Errorf("lifetime must not be <= 0")
+	}
+	// Note order of port arguments is switched between our AddPortMapping and the client's AddPortMapping.
+	_, err := n.client.AddPortMapping(protocol, intport, extport, int(lifetime/time.Second))
+	return err
+}
+
+func (n *natPMPClient) DeletePortMapping(protocol string, externalPort, internalPort int) (err error) {
+	// To destroy a mapping, send an add-port with
+	// an internalPort of the internal port to destroy, an external port of zero and a time of zero.
+	_, err = n.client.AddPortMapping(protocol, internalPort, 0, 0)
+	return
+}
diff --git a/p2p/natupnp.go b/p2p/natupnp.go
new file mode 100644
index 000000000..2e0d8ce8d
--- /dev/null
+++ b/p2p/natupnp.go
@@ -0,0 +1,341 @@
+package p2p
+
+// Just enough UPnP to be able to forward ports
+//
+
+import (
+	"bytes"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const (
+	upnpDiscoverAttempts = 3
+	upnpDiscoverTimeout  = 5 * time.Second
+)
+
+// UPNP returns a NAT port mapper that uses UPnP. It will attempt to
+// discover the address of your router using UDP broadcasts.
+func UPNP() NAT {
+	return &upnpNAT{}
+}
+
+type upnpNAT struct {
+	serviceURL string
+	ourIP      string
+}
+
+func (n *upnpNAT) String() string {
+	return "UPNP"
+}
+
+func (n *upnpNAT) discover() error {
+	if n.serviceURL != "" {
+		// already discovered
+		return nil
+	}
+
+	ssdp, err := net.ResolveUDPAddr("udp4", "239.255.255.250:1900")
+	if err != nil {
+		return err
+	}
+	// TODO: try on all network interfaces simultaneously.
+	// Broadcasting on 0.0.0.0 could select a random interface
+	// to send on (platform specific).
+	conn, err := net.ListenPacket("udp4", ":0")
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	conn.SetDeadline(time.Now().Add(10 * time.Second))
+	st := "ST: urn:schemas-upnp-org:device:InternetGatewayDevice:1\r\n"
+	buf := bytes.NewBufferString(
+		"M-SEARCH * HTTP/1.1\r\n" +
+			"HOST: 239.255.255.250:1900\r\n" +
+			st +
+			"MAN: \"ssdp:discover\"\r\n" +
+			"MX: 2\r\n\r\n")
+	message := buf.Bytes()
+	answerBytes := make([]byte, 1024)
+	for i := 0; i < upnpDiscoverAttempts; i++ {
+		_, err = conn.WriteTo(message, ssdp)
+		if err != nil {
+			return err
+		}
+		nn, _, err := conn.ReadFrom(answerBytes)
+		if err != nil {
+			continue
+		}
+		answer := string(answerBytes[0:nn])
+		if strings.Index(answer, "\r\n"+st) < 0 {
+			continue
+		}
+		// HTTP header field names are case-insensitive.
+		// http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2
+		locString := "\r\nlocation: "
+		answer = strings.ToLower(answer)
+		locIndex := strings.Index(answer, locString)
+		if locIndex < 0 {
+			continue
+		}
+		loc := answer[locIndex+len(locString):]
+		endIndex := strings.Index(loc, "\r\n")
+		if endIndex < 0 {
+			continue
+		}
+		locURL := loc[0:endIndex]
+		var serviceURL string
+		serviceURL, err = getServiceURL(locURL)
+		if err != nil {
+			return err
+		}
+		var ourIP string
+		ourIP, err = getOurIP()
+		if err != nil {
+			return err
+		}
+		n.serviceURL = serviceURL
+		n.ourIP = ourIP
+		return nil
+	}
+	return errors.New("UPnP port discovery failed.")
+}
+
+func (n *upnpNAT) GetExternalAddress() (addr net.IP, err error) {
+	if err := n.discover(); err != nil {
+		return nil, err
+	}
+	info, err := n.getStatusInfo()
+	return net.ParseIP(info.externalIpAddress), err
+}
+
+func (n *upnpNAT) AddPortMapping(protocol string, extport, intport int, description string, lifetime time.Duration) error {
+	if err := n.discover(); err != nil {
+		return err
+	}
+
+	// A single concatenation would break ARM compilation.
+	message := "<u:AddPortMapping xmlns:u=\"urn:schemas-upnp-org:service:WANIPConnection:1\">\r\n" +
+		"<NewRemoteHost></NewRemoteHost><NewExternalPort>" + strconv.Itoa(extport)
+	message += "</NewExternalPort><NewProtocol>" + protocol + "</NewProtocol>"
+	message += "<NewInternalPort>" + strconv.Itoa(extport) + "</NewInternalPort>" +
+		"<NewInternalClient>" + n.ourIP + "</NewInternalClient>" +
+		"<NewEnabled>1</NewEnabled><NewPortMappingDescription>"
+	message += description +
+		"</NewPortMappingDescription><NewLeaseDuration>" + fmt.Sprint(lifetime/time.Second) +
+		"</NewLeaseDuration></u:AddPortMapping>"
+
+	// TODO: check response to see if the port was forwarded
+	_, err := soapRequest(n.serviceURL, "AddPortMapping", message)
+	return err
+}
+
+func (n *upnpNAT) DeletePortMapping(protocol string, externalPort, internalPort int) error {
+	if err := n.discover(); err != nil {
+		return err
+	}
+
+	message := "<u:DeletePortMapping xmlns:u=\"urn:schemas-upnp-org:service:WANIPConnection:1\">\r\n" +
+		"<NewRemoteHost></NewRemoteHost><NewExternalPort>" + strconv.Itoa(externalPort) +
+		"</NewExternalPort><NewProtocol>" + protocol + "</NewProtocol>" +
+		"</u:DeletePortMapping>"
+
+	// TODO: check response to see if the port was deleted
+	_, err := soapRequest(n.serviceURL, "DeletePortMapping", message)
+	return err
+}
+
+type statusInfo struct {
+	externalIpAddress string
+}
+
+func (n *upnpNAT) getStatusInfo() (info statusInfo, err error) {
+	message := "<u:GetStatusInfo xmlns:u=\"urn:schemas-upnp-org:service:WANIPConnection:1\">\r\n" +
+		"</u:GetStatusInfo>"
+
+	var response *http.Response
+	response, err = soapRequest(n.serviceURL, "GetStatusInfo", message)
+	if err != nil {
+		return
+	}
+
+	// TODO: Write a soap reply parser. It has to eat the Body and envelope tags...
+
+	response.Body.Close()
+	return
+}
+
+// service represents the Service type in an UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type service struct {
+	ServiceType string `xml:"serviceType"`
+	ControlURL  string `xml:"controlURL"`
+}
+
+// deviceList represents the deviceList type in an UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type deviceList struct {
+	XMLName xml.Name `xml:"deviceList"`
+	Device  []device `xml:"device"`
+}
+
+// serviceList represents the serviceList type in an UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type serviceList struct {
+	XMLName xml.Name  `xml:"serviceList"`
+	Service []service `xml:"service"`
+}
+
+// device represents the device type in an UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type device struct {
+	XMLName     xml.Name    `xml:"device"`
+	DeviceType  string      `xml:"deviceType"`
+	DeviceList  deviceList  `xml:"deviceList"`
+	ServiceList serviceList `xml:"serviceList"`
+}
+
+// specVersion represents the specVersion in a UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type specVersion struct {
+	XMLName xml.Name `xml:"specVersion"`
+	Major   int      `xml:"major"`
+	Minor   int      `xml:"minor"`
+}
+
+// root represents the Root document for a UPnP xml description.
+// Only the parts we care about are present and thus the xml may have more
+// fields than present in the structure.
+type root struct {
+	XMLName     xml.Name `xml:"root"`
+	SpecVersion specVersion
+	Device      device
+}
+
+func getChildDevice(d *device, deviceType string) *device {
+	dl := d.DeviceList.Device
+	for i := 0; i < len(dl); i++ {
+		if dl[i].DeviceType == deviceType {
+			return &dl[i]
+		}
+	}
+	return nil
+}
+
+func getChildService(d *device, serviceType string) *service {
+	sl := d.ServiceList.Service
+	for i := 0; i < len(sl); i++ {
+		if sl[i].ServiceType == serviceType {
+			return &sl[i]
+		}
+	}
+	return nil
+}
+
+func getOurIP() (ip string, err error) {
+	hostname, err := os.Hostname()
+	if err != nil {
+		return
+	}
+	p, err := net.LookupIP(hostname)
+	if err != nil && len(p) > 0 {
+		return
+	}
+	return p[0].String(), nil
+}
+
+func getServiceURL(rootURL string) (url string, err error) {
+	r, err := http.Get(rootURL)
+	if err != nil {
+		return
+	}
+	defer r.Body.Close()
+	if r.StatusCode >= 400 {
+		err = errors.New(string(r.StatusCode))
+		return
+	}
+	var root root
+	err = xml.NewDecoder(r.Body).Decode(&root)
+
+	if err != nil {
+		return
+	}
+	a := &root.Device
+	if a.DeviceType != "urn:schemas-upnp-org:device:InternetGatewayDevice:1" {
+		err = errors.New("No InternetGatewayDevice")
+		return
+	}
+	b := getChildDevice(a, "urn:schemas-upnp-org:device:WANDevice:1")
+	if b == nil {
+		err = errors.New("No WANDevice")
+		return
+	}
+	c := getChildDevice(b, "urn:schemas-upnp-org:device:WANConnectionDevice:1")
+	if c == nil {
+		err = errors.New("No WANConnectionDevice")
+		return
+	}
+	d := getChildService(c, "urn:schemas-upnp-org:service:WANIPConnection:1")
+	if d == nil {
+		err = errors.New("No WANIPConnection")
+		return
+	}
+	url = combineURL(rootURL, d.ControlURL)
+	return
+}
+
+func combineURL(rootURL, subURL string) string {
+	protocolEnd := "://"
+	protoEndIndex := strings.Index(rootURL, protocolEnd)
+	a := rootURL[protoEndIndex+len(protocolEnd):]
+	rootIndex := strings.Index(a, "/")
+	return rootURL[0:protoEndIndex+len(protocolEnd)+rootIndex] + subURL
+}
+
+func soapRequest(url, function, message string) (r *http.Response, err error) {
+	fullMessage := "<?xml version=\"1.0\" ?>" +
+		"<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">\r\n" +
+		"<s:Body>" + message + "</s:Body></s:Envelope>"
+
+	req, err := http.NewRequest("POST", url, strings.NewReader(fullMessage))
+	if err != nil {
+		return
+	}
+	req.Header.Set("Content-Type", "text/xml ; charset=\"utf-8\"")
+	req.Header.Set("User-Agent", "Darwin/10.0.0, UPnP/1.0, MiniUPnPc/1.3")
+	//req.Header.Set("Transfer-Encoding", "chunked")
+	req.Header.Set("SOAPAction", "\"urn:schemas-upnp-org:service:WANIPConnection:1#"+function+"\"")
+	req.Header.Set("Connection", "Close")
+	req.Header.Set("Cache-Control", "no-cache")
+	req.Header.Set("Pragma", "no-cache")
+
+	r, err = http.DefaultClient.Do(req)
+	if err != nil {
+		return
+	}
+
+	if r.Body != nil {
+		defer r.Body.Close()
+	}
+
+	if r.StatusCode >= 400 {
+		// log.Stderr(function, r.StatusCode)
+		err = errors.New("Error " + strconv.Itoa(r.StatusCode) + " for " + function)
+		r = nil
+		return
+	}
+	return
+}
diff --git a/p2p/peer.go b/p2p/peer.go
new file mode 100644
index 000000000..86c4d7ab5
--- /dev/null
+++ b/p2p/peer.go
@@ -0,0 +1,462 @@
+package p2p
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net"
+	"sort"
+	"sync"
+	"time"
+
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/logger"
+)
+
+// peerAddr is the structure of a peer list element.
+// It is also a valid net.Addr.
+type peerAddr struct {
+	IP     net.IP
+	Port   uint64
+	Pubkey []byte // optional
+}
+
+func newPeerAddr(addr net.Addr, pubkey []byte) *peerAddr {
+	n := addr.Network()
+	if n != "tcp" && n != "tcp4" && n != "tcp6" {
+		// for testing with non-TCP
+		return &peerAddr{net.ParseIP("127.0.0.1"), 30303, pubkey}
+	}
+	ta := addr.(*net.TCPAddr)
+	return &peerAddr{ta.IP, uint64(ta.Port), pubkey}
+}
+
+func (d peerAddr) Network() string {
+	if d.IP.To4() != nil {
+		return "tcp4"
+	} else {
+		return "tcp6"
+	}
+}
+
+func (d peerAddr) String() string {
+	return fmt.Sprintf("%v:%d", d.IP, d.Port)
+}
+
+func (d peerAddr) RlpData() interface{} {
+	return []interface{}{d.IP, d.Port, d.Pubkey}
+}
+
+// Peer represents a remote peer.
+type Peer struct {
+	// Peers have all the log methods.
+	// Use them to display messages related to the peer.
+	*logger.Logger
+
+	infolock   sync.Mutex
+	identity   ClientIdentity
+	caps       []Cap
+	listenAddr *peerAddr // what remote peer is listening on
+	dialAddr   *peerAddr // non-nil if dialing
+
+	// The mutex protects the connection
+	// so only one protocol can write at a time.
+	writeMu sync.Mutex
+	conn    net.Conn
+	bufconn *bufio.ReadWriter
+
+	// These fields maintain the running protocols.
+	protocols       []Protocol
+	runBaseProtocol bool // for testing
+
+	runlock sync.RWMutex // protects running
+	running map[string]*proto
+
+	protoWG  sync.WaitGroup
+	protoErr chan error
+	closed   chan struct{}
+	disc     chan DiscReason
+
+	activity event.TypeMux // for activity events
+
+	slot int // index into Server peer list
+
+	// These fields are kept so base protocol can access them.
+	// TODO: this should be one or more interfaces
+	ourID         ClientIdentity        // client id of the Server
+	ourListenAddr *peerAddr             // listen addr of Server, nil if not listening
+	newPeerAddr   chan<- *peerAddr      // tell server about received peers
+	otherPeers    func() []*Peer        // should return the list of all peers
+	pubkeyHook    func(*peerAddr) error // called at end of handshake to validate pubkey
+}
+
+// NewPeer returns a peer for testing purposes.
+func NewPeer(id ClientIdentity, caps []Cap) *Peer {
+	conn, _ := net.Pipe()
+	peer := newPeer(conn, nil, nil)
+	peer.setHandshakeInfo(id, nil, caps)
+	close(peer.closed)
+	return peer
+}
+
+func newServerPeer(server *Server, conn net.Conn, dialAddr *peerAddr) *Peer {
+	p := newPeer(conn, server.Protocols, dialAddr)
+	p.ourID = server.Identity
+	p.newPeerAddr = server.peerConnect
+	p.otherPeers = server.Peers
+	p.pubkeyHook = server.verifyPeer
+	p.runBaseProtocol = true
+
+	// laddr can be updated concurrently by NAT traversal.
+	// newServerPeer must be called with the server lock held.
+	if server.laddr != nil {
+		p.ourListenAddr = newPeerAddr(server.laddr, server.Identity.Pubkey())
+	}
+	return p
+}
+
+func newPeer(conn net.Conn, protocols []Protocol, dialAddr *peerAddr) *Peer {
+	p := &Peer{
+		Logger:    logger.NewLogger("P2P " + conn.RemoteAddr().String()),
+		conn:      conn,
+		dialAddr:  dialAddr,
+		bufconn:   bufio.NewReadWriter(bufio.NewReader(conn), bufio.NewWriter(conn)),
+		protocols: protocols,
+		running:   make(map[string]*proto),
+		disc:      make(chan DiscReason),
+		protoErr:  make(chan error),
+		closed:    make(chan struct{}),
+	}
+	return p
+}
+
+// Identity returns the client identity of the remote peer. The
+// identity can be nil if the peer has not yet completed the
+// handshake.
+func (p *Peer) Identity() ClientIdentity {
+	p.infolock.Lock()
+	defer p.infolock.Unlock()
+	return p.identity
+}
+
+// Caps returns the capabilities (supported subprotocols) of the remote peer.
+func (p *Peer) Caps() []Cap {
+	p.infolock.Lock()
+	defer p.infolock.Unlock()
+	return p.caps
+}
+
+func (p *Peer) setHandshakeInfo(id ClientIdentity, laddr *peerAddr, caps []Cap) {
+	p.infolock.Lock()
+	p.identity = id
+	p.listenAddr = laddr
+	p.caps = caps
+	p.infolock.Unlock()
+}
+
+// RemoteAddr returns the remote address of the network connection.
+func (p *Peer) RemoteAddr() net.Addr {
+	return p.conn.RemoteAddr()
+}
+
+// LocalAddr returns the local address of the network connection.
+func (p *Peer) LocalAddr() net.Addr {
+	return p.conn.LocalAddr()
+}
+
+// Disconnect terminates the peer connection with the given reason.
+// It returns immediately and does not wait until the connection is closed.
+func (p *Peer) Disconnect(reason DiscReason) {
+	select {
+	case p.disc <- reason:
+	case <-p.closed:
+	}
+}
+
+// String implements fmt.Stringer.
+func (p *Peer) String() string {
+	kind := "inbound"
+	p.infolock.Lock()
+	if p.dialAddr != nil {
+		kind = "outbound"
+	}
+	p.infolock.Unlock()
+	return fmt.Sprintf("Peer(%p %v %s)", p, p.conn.RemoteAddr(), kind)
+}
+
+const (
+	// maximum amount of time allowed for reading a message
+	msgReadTimeout = 5 * time.Second
+	// maximum amount of time allowed for writing a message
+	msgWriteTimeout = 5 * time.Second
+	// messages smaller than this many bytes will be read at
+	// once before passing them to a protocol.
+	wholePayloadSize = 64 * 1024
+)
+
+var (
+	inactivityTimeout     = 2 * time.Second
+	disconnectGracePeriod = 2 * time.Second
+)
+
+func (p *Peer) loop() (reason DiscReason, err error) {
+	defer p.activity.Stop()
+	defer p.closeProtocols()
+	defer close(p.closed)
+	defer p.conn.Close()
+
+	// read loop
+	readMsg := make(chan Msg)
+	readErr := make(chan error)
+	readNext := make(chan bool, 1)
+	protoDone := make(chan struct{}, 1)
+	go p.readLoop(readMsg, readErr, readNext)
+	readNext <- true
+
+	if p.runBaseProtocol {
+		p.startBaseProtocol()
+	}
+
+loop:
+	for {
+		select {
+		case msg := <-readMsg:
+			// a new message has arrived.
+			var wait bool
+			if wait, err = p.dispatch(msg, protoDone); err != nil {
+				p.Errorf("msg dispatch error: %v\n", err)
+				reason = discReasonForError(err)
+				break loop
+			}
+			if !wait {
+				// Msg has already been read completely, continue with next message.
+				readNext <- true
+			}
+			p.activity.Post(time.Now())
+		case <-protoDone:
+			// protocol has consumed the message payload,
+			// we can continue reading from the socket.
+			readNext <- true
+
+		case err := <-readErr:
+			// read failed. there is no need to run the
+			// polite disconnect sequence because the connection
+			// is probably dead anyway.
+			// TODO: handle write errors as well
+			return DiscNetworkError, err
+		case err = <-p.protoErr:
+			reason = discReasonForError(err)
+			break loop
+		case reason = <-p.disc:
+			break loop
+		}
+	}
+
+	// wait for read loop to return.
+	close(readNext)
+	<-readErr
+	// tell the remote end to disconnect
+	done := make(chan struct{})
+	go func() {
+		p.conn.SetDeadline(time.Now().Add(disconnectGracePeriod))
+		p.writeMsg(NewMsg(discMsg, reason), disconnectGracePeriod)
+		io.Copy(ioutil.Discard, p.conn)
+		close(done)
+	}()
+	select {
+	case <-done:
+	case <-time.After(disconnectGracePeriod):
+	}
+	return reason, err
+}
+
+func (p *Peer) readLoop(msgc chan<- Msg, errc chan<- error, unblock <-chan bool) {
+	for _ = range unblock {
+		p.conn.SetReadDeadline(time.Now().Add(msgReadTimeout))
+		if msg, err := readMsg(p.bufconn); err != nil {
+			errc <- err
+		} else {
+			msgc <- msg
+		}
+	}
+	close(errc)
+}
+
+func (p *Peer) dispatch(msg Msg, protoDone chan struct{}) (wait bool, err error) {
+	proto, err := p.getProto(msg.Code)
+	if err != nil {
+		return false, err
+	}
+	if msg.Size <= wholePayloadSize {
+		// optimization: msg is small enough, read all
+		// of it and move on to the next message
+		buf, err := ioutil.ReadAll(msg.Payload)
+		if err != nil {
+			return false, err
+		}
+		msg.Payload = bytes.NewReader(buf)
+		proto.in <- msg
+	} else {
+		wait = true
+		pr := &eofSignal{msg.Payload, int64(msg.Size), protoDone}
+		msg.Payload = pr
+		proto.in <- msg
+	}
+	return wait, nil
+}
+
+func (p *Peer) startBaseProtocol() {
+	p.runlock.Lock()
+	defer p.runlock.Unlock()
+	p.running[""] = p.startProto(0, Protocol{
+		Length: baseProtocolLength,
+		Run:    runBaseProtocol,
+	})
+}
+
+// startProtocols starts matching named subprotocols.
+func (p *Peer) startSubprotocols(caps []Cap) {
+	sort.Sort(capsByName(caps))
+
+	p.runlock.Lock()
+	defer p.runlock.Unlock()
+	offset := baseProtocolLength
+outer:
+	for _, cap := range caps {
+		for _, proto := range p.protocols {
+			if proto.Name == cap.Name &&
+				proto.Version == cap.Version &&
+				p.running[cap.Name] == nil {
+				p.running[cap.Name] = p.startProto(offset, proto)
+				offset += proto.Length
+				continue outer
+			}
+		}
+	}
+}
+
+func (p *Peer) startProto(offset uint64, impl Protocol) *proto {
+	rw := &proto{
+		in:      make(chan Msg),
+		offset:  offset,
+		maxcode: impl.Length,
+		peer:    p,
+	}
+	p.protoWG.Add(1)
+	go func() {
+		err := impl.Run(p, rw)
+		if err == nil {
+			p.Infof("protocol %q returned", impl.Name)
+			err = newPeerError(errMisc, "protocol returned")
+		} else {
+			p.Errorf("protocol %q error: %v\n", impl.Name, err)
+		}
+		select {
+		case p.protoErr <- err:
+		case <-p.closed:
+		}
+		p.protoWG.Done()
+	}()
+	return rw
+}
+
+// getProto finds the protocol responsible for handling
+// the given message code.
+func (p *Peer) getProto(code uint64) (*proto, error) {
+	p.runlock.RLock()
+	defer p.runlock.RUnlock()
+	for _, proto := range p.running {
+		if code >= proto.offset && code < proto.offset+proto.maxcode {
+			return proto, nil
+		}
+	}
+	return nil, newPeerError(errInvalidMsgCode, "%d", code)
+}
+
+func (p *Peer) closeProtocols() {
+	p.runlock.RLock()
+	for _, p := range p.running {
+		close(p.in)
+	}
+	p.runlock.RUnlock()
+	p.protoWG.Wait()
+}
+
+// writeProtoMsg sends the given message on behalf of the given named protocol.
+func (p *Peer) writeProtoMsg(protoName string, msg Msg) error {
+	p.runlock.RLock()
+	proto, ok := p.running[protoName]
+	p.runlock.RUnlock()
+	if !ok {
+		return fmt.Errorf("protocol %s not handled by peer", protoName)
+	}
+	if msg.Code >= proto.maxcode {
+		return newPeerError(errInvalidMsgCode, "code %x is out of range for protocol %q", msg.Code, protoName)
+	}
+	msg.Code += proto.offset
+	return p.writeMsg(msg, msgWriteTimeout)
+}
+
+// writeMsg writes a message to the connection.
+func (p *Peer) writeMsg(msg Msg, timeout time.Duration) error {
+	p.writeMu.Lock()
+	defer p.writeMu.Unlock()
+	p.conn.SetWriteDeadline(time.Now().Add(timeout))
+	if err := writeMsg(p.bufconn, msg); err != nil {
+		return newPeerError(errWrite, "%v", err)
+	}
+	return p.bufconn.Flush()
+}
+
+type proto struct {
+	name            string
+	in              chan Msg
+	maxcode, offset uint64
+	peer            *Peer
+}
+
+func (rw *proto) WriteMsg(msg Msg) error {
+	if msg.Code >= rw.maxcode {
+		return newPeerError(errInvalidMsgCode, "not handled")
+	}
+	msg.Code += rw.offset
+	return rw.peer.writeMsg(msg, msgWriteTimeout)
+}
+
+func (rw *proto) EncodeMsg(code uint64, data ...interface{}) error {
+	return rw.WriteMsg(NewMsg(code, data))
+}
+
+func (rw *proto) ReadMsg() (Msg, error) {
+	msg, ok := <-rw.in
+	if !ok {
+		return msg, io.EOF
+	}
+	msg.Code -= rw.offset
+	return msg, nil
+}
+
+// eofSignal wraps a reader with eof signaling. the eof channel is
+// closed when the wrapped reader returns an error or when count bytes
+// have been read.
+//
+type eofSignal struct {
+	wrapped io.Reader
+	count   int64
+	eof     chan<- struct{}
+}
+
+// note: when using eofSignal to detect whether a message payload
+// has been read, Read might not be called for zero sized messages.
+
+func (r *eofSignal) Read(buf []byte) (int, error) {
+	n, err := r.wrapped.Read(buf)
+	r.count -= int64(n)
+	if (err != nil || r.count <= 0) && r.eof != nil {
+		r.eof <- struct{}{} // tell Peer that msg has been consumed
+		r.eof = nil
+	}
+	return n, err
+}
diff --git a/p2p/peer_error.go b/p2p/peer_error.go
new file mode 100644
index 000000000..0eb7ec838
--- /dev/null
+++ b/p2p/peer_error.go
@@ -0,0 +1,133 @@
+package p2p
+
+import (
+	"fmt"
+)
+
+const (
+	errMagicTokenMismatch = iota
+	errRead
+	errWrite
+	errMisc
+	errInvalidMsgCode
+	errInvalidMsg
+	errP2PVersionMismatch
+	errPubkeyMissing
+	errPubkeyInvalid
+	errPubkeyForbidden
+	errProtocolBreach
+	errPingTimeout
+	errInvalidNetworkId
+	errInvalidProtocolVersion
+)
+
+var errorToString = map[int]string{
+	errMagicTokenMismatch:     "Magic token mismatch",
+	errRead:                   "Read error",
+	errWrite:                  "Write error",
+	errMisc:                   "Misc error",
+	errInvalidMsgCode:         "Invalid message code",
+	errInvalidMsg:             "Invalid message",
+	errP2PVersionMismatch:     "P2P Version Mismatch",
+	errPubkeyMissing:          "Public key missing",
+	errPubkeyInvalid:          "Public key invalid",
+	errPubkeyForbidden:        "Public key forbidden",
+	errProtocolBreach:         "Protocol Breach",
+	errPingTimeout:            "Ping timeout",
+	errInvalidNetworkId:       "Invalid network id",
+	errInvalidProtocolVersion: "Invalid protocol version",
+}
+
+type peerError struct {
+	Code    int
+	message string
+}
+
+func newPeerError(code int, format string, v ...interface{}) *peerError {
+	desc, ok := errorToString[code]
+	if !ok {
+		panic("invalid error code")
+	}
+	err := &peerError{code, desc}
+	if format != "" {
+		err.message += ": " + fmt.Sprintf(format, v...)
+	}
+	return err
+}
+
+func (self *peerError) Error() string {
+	return self.message
+}
+
+type DiscReason byte
+
+const (
+	DiscRequested           DiscReason = 0x00
+	DiscNetworkError                   = 0x01
+	DiscProtocolError                  = 0x02
+	DiscUselessPeer                    = 0x03
+	DiscTooManyPeers                   = 0x04
+	DiscAlreadyConnected               = 0x05
+	DiscIncompatibleVersion            = 0x06
+	DiscInvalidIdentity                = 0x07
+	DiscQuitting                       = 0x08
+	DiscUnexpectedIdentity             = 0x09
+	DiscSelf                           = 0x0a
+	DiscReadTimeout                    = 0x0b
+	DiscSubprotocolError               = 0x10
+)
+
+var discReasonToString = [DiscSubprotocolError + 1]string{
+	DiscRequested:           "Disconnect requested",
+	DiscNetworkError:        "Network error",
+	DiscProtocolError:       "Breach of protocol",
+	DiscUselessPeer:         "Useless peer",
+	DiscTooManyPeers:        "Too many peers",
+	DiscAlreadyConnected:    "Already connected",
+	DiscIncompatibleVersion: "Incompatible P2P protocol version",
+	DiscInvalidIdentity:     "Invalid node identity",
+	DiscQuitting:            "Client quitting",
+	DiscUnexpectedIdentity:  "Unexpected identity",
+	DiscSelf:                "Connected to self",
+	DiscReadTimeout:         "Read timeout",
+	DiscSubprotocolError:    "Subprotocol error",
+}
+
+func (d DiscReason) String() string {
+	if len(discReasonToString) < int(d) {
+		return fmt.Sprintf("Unknown Reason(%d)", d)
+	}
+	return discReasonToString[d]
+}
+
+type discRequestedError DiscReason
+
+func (err discRequestedError) Error() string {
+	return fmt.Sprintf("disconnect requested: %v", DiscReason(err))
+}
+
+func discReasonForError(err error) DiscReason {
+	if reason, ok := err.(discRequestedError); ok {
+		return DiscReason(reason)
+	}
+	peerError, ok := err.(*peerError)
+	if !ok {
+		return DiscSubprotocolError
+	}
+	switch peerError.Code {
+	case errP2PVersionMismatch:
+		return DiscIncompatibleVersion
+	case errPubkeyMissing, errPubkeyInvalid:
+		return DiscInvalidIdentity
+	case errPubkeyForbidden:
+		return DiscUselessPeer
+	case errInvalidMsgCode, errMagicTokenMismatch, errProtocolBreach:
+		return DiscProtocolError
+	case errPingTimeout:
+		return DiscReadTimeout
+	case errRead, errWrite, errMisc:
+		return DiscNetworkError
+	default:
+		return DiscSubprotocolError
+	}
+}
diff --git a/p2p/peer_test.go b/p2p/peer_test.go
new file mode 100644
index 000000000..f7759786e
--- /dev/null
+++ b/p2p/peer_test.go
@@ -0,0 +1,295 @@
+package p2p
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/hex"
+	"io"
+	"io/ioutil"
+	"net"
+	"reflect"
+	"testing"
+	"time"
+)
+
+var discard = Protocol{
+	Name:   "discard",
+	Length: 1,
+	Run: func(p *Peer, rw MsgReadWriter) error {
+		for {
+			msg, err := rw.ReadMsg()
+			if err != nil {
+				return err
+			}
+			if err = msg.Discard(); err != nil {
+				return err
+			}
+		}
+	},
+}
+
+func testPeer(protos []Protocol) (net.Conn, *Peer, <-chan error) {
+	conn1, conn2 := net.Pipe()
+	id := NewSimpleClientIdentity("test", "0", "0", "public key")
+	peer := newPeer(conn1, protos, nil)
+	peer.ourID = id
+	peer.pubkeyHook = func(*peerAddr) error { return nil }
+	errc := make(chan error, 1)
+	go func() {
+		_, err := peer.loop()
+		errc <- err
+	}()
+	return conn2, peer, errc
+}
+
+func TestPeerProtoReadMsg(t *testing.T) {
+	defer testlog(t).detach()
+
+	done := make(chan struct{})
+	proto := Protocol{
+		Name:   "a",
+		Length: 5,
+		Run: func(peer *Peer, rw MsgReadWriter) error {
+			msg, err := rw.ReadMsg()
+			if err != nil {
+				t.Errorf("read error: %v", err)
+			}
+			if msg.Code != 2 {
+				t.Errorf("incorrect msg code %d relayed to protocol", msg.Code)
+			}
+			data, err := ioutil.ReadAll(msg.Payload)
+			if err != nil {
+				t.Errorf("payload read error: %v", err)
+			}
+			expdata, _ := hex.DecodeString("0183303030")
+			if !bytes.Equal(expdata, data) {
+				t.Errorf("incorrect msg data %x", data)
+			}
+			close(done)
+			return nil
+		},
+	}
+
+	net, peer, errc := testPeer([]Protocol{proto})
+	defer net.Close()
+	peer.startSubprotocols([]Cap{proto.cap()})
+
+	writeMsg(net, NewMsg(18, 1, "000"))
+	select {
+	case <-done:
+	case err := <-errc:
+		t.Errorf("peer returned: %v", err)
+	case <-time.After(2 * time.Second):
+		t.Errorf("receive timeout")
+	}
+}
+
+func TestPeerProtoReadLargeMsg(t *testing.T) {
+	defer testlog(t).detach()
+
+	msgsize := uint32(10 * 1024 * 1024)
+	done := make(chan struct{})
+	proto := Protocol{
+		Name:   "a",
+		Length: 5,
+		Run: func(peer *Peer, rw MsgReadWriter) error {
+			msg, err := rw.ReadMsg()
+			if err != nil {
+				t.Errorf("read error: %v", err)
+			}
+			if msg.Size != msgsize+4 {
+				t.Errorf("incorrect msg.Size, got %d, expected %d", msg.Size, msgsize)
+			}
+			msg.Discard()
+			close(done)
+			return nil
+		},
+	}
+
+	net, peer, errc := testPeer([]Protocol{proto})
+	defer net.Close()
+	peer.startSubprotocols([]Cap{proto.cap()})
+
+	writeMsg(net, NewMsg(18, make([]byte, msgsize)))
+	select {
+	case <-done:
+	case err := <-errc:
+		t.Errorf("peer returned: %v", err)
+	case <-time.After(2 * time.Second):
+		t.Errorf("receive timeout")
+	}
+}
+
+func TestPeerProtoEncodeMsg(t *testing.T) {
+	defer testlog(t).detach()
+
+	proto := Protocol{
+		Name:   "a",
+		Length: 2,
+		Run: func(peer *Peer, rw MsgReadWriter) error {
+			if err := rw.EncodeMsg(2); err == nil {
+				t.Error("expected error for out-of-range msg code, got nil")
+			}
+			if err := rw.EncodeMsg(1); err != nil {
+				t.Errorf("write error: %v", err)
+			}
+			return nil
+		},
+	}
+	net, peer, _ := testPeer([]Protocol{proto})
+	defer net.Close()
+	peer.startSubprotocols([]Cap{proto.cap()})
+
+	bufr := bufio.NewReader(net)
+	msg, err := readMsg(bufr)
+	if err != nil {
+		t.Errorf("read error: %v", err)
+	}
+	if msg.Code != 17 {
+		t.Errorf("incorrect message code: got %d, expected %d", msg.Code, 17)
+	}
+}
+
+func TestPeerWrite(t *testing.T) {
+	defer testlog(t).detach()
+
+	net, peer, peerErr := testPeer([]Protocol{discard})
+	defer net.Close()
+	peer.startSubprotocols([]Cap{discard.cap()})
+
+	// test write errors
+	if err := peer.writeProtoMsg("b", NewMsg(3)); err == nil {
+		t.Errorf("expected error for unknown protocol, got nil")
+	}
+	if err := peer.writeProtoMsg("discard", NewMsg(8)); err == nil {
+		t.Errorf("expected error for out-of-range msg code, got nil")
+	} else if perr, ok := err.(*peerError); !ok || perr.Code != errInvalidMsgCode {
+		t.Errorf("wrong error for out-of-range msg code, got %#v", err)
+	}
+
+	// setup for reading the message on the other end
+	read := make(chan struct{})
+	go func() {
+		bufr := bufio.NewReader(net)
+		msg, err := readMsg(bufr)
+		if err != nil {
+			t.Errorf("read error: %v", err)
+		} else if msg.Code != 16 {
+			t.Errorf("wrong code, got %d, expected %d", msg.Code, 16)
+		}
+		msg.Discard()
+		close(read)
+	}()
+
+	// test succcessful write
+	if err := peer.writeProtoMsg("discard", NewMsg(0)); err != nil {
+		t.Errorf("expect no error for known protocol: %v", err)
+	}
+	select {
+	case <-read:
+	case err := <-peerErr:
+		t.Fatalf("peer stopped: %v", err)
+	}
+}
+
+func TestPeerActivity(t *testing.T) {
+	// shorten inactivityTimeout while this test is running
+	oldT := inactivityTimeout
+	defer func() { inactivityTimeout = oldT }()
+	inactivityTimeout = 20 * time.Millisecond
+
+	net, peer, peerErr := testPeer([]Protocol{discard})
+	defer net.Close()
+	peer.startSubprotocols([]Cap{discard.cap()})
+
+	sub := peer.activity.Subscribe(time.Time{})
+	defer sub.Unsubscribe()
+
+	for i := 0; i < 6; i++ {
+		writeMsg(net, NewMsg(16))
+		select {
+		case <-sub.Chan():
+		case <-time.After(inactivityTimeout / 2):
+			t.Fatal("no event within ", inactivityTimeout/2)
+		case err := <-peerErr:
+			t.Fatal("peer error", err)
+		}
+	}
+
+	select {
+	case <-time.After(inactivityTimeout * 2):
+	case <-sub.Chan():
+		t.Fatal("got activity event while connection was inactive")
+	case err := <-peerErr:
+		t.Fatal("peer error", err)
+	}
+}
+
+func TestNewPeer(t *testing.T) {
+	id := NewSimpleClientIdentity("clientid", "version", "customid", "pubkey")
+	caps := []Cap{{"foo", 2}, {"bar", 3}}
+	p := NewPeer(id, caps)
+	if !reflect.DeepEqual(p.Caps(), caps) {
+		t.Errorf("Caps mismatch: got %v, expected %v", p.Caps(), caps)
+	}
+	if p.Identity() != id {
+		t.Errorf("Identity mismatch: got %v, expected %v", p.Identity(), id)
+	}
+	// Should not hang.
+	p.Disconnect(DiscAlreadyConnected)
+}
+
+func TestEOFSignal(t *testing.T) {
+	rb := make([]byte, 10)
+
+	// empty reader
+	eof := make(chan struct{}, 1)
+	sig := &eofSignal{new(bytes.Buffer), 0, eof}
+	if n, err := sig.Read(rb); n != 0 || err != io.EOF {
+		t.Errorf("Read returned unexpected values: (%v, %v)", n, err)
+	}
+	select {
+	case <-eof:
+	default:
+		t.Error("EOF chan not signaled")
+	}
+
+	// count before error
+	eof = make(chan struct{}, 1)
+	sig = &eofSignal{bytes.NewBufferString("aaaaaaaa"), 4, eof}
+	if n, err := sig.Read(rb); n != 8 || err != nil {
+		t.Errorf("Read returned unexpected values: (%v, %v)", n, err)
+	}
+	select {
+	case <-eof:
+	default:
+		t.Error("EOF chan not signaled")
+	}
+
+	// error before count
+	eof = make(chan struct{}, 1)
+	sig = &eofSignal{bytes.NewBufferString("aaaa"), 999, eof}
+	if n, err := sig.Read(rb); n != 4 || err != nil {
+		t.Errorf("Read returned unexpected values: (%v, %v)", n, err)
+	}
+	if n, err := sig.Read(rb); n != 0 || err != io.EOF {
+		t.Errorf("Read returned unexpected values: (%v, %v)", n, err)
+	}
+	select {
+	case <-eof:
+	default:
+		t.Error("EOF chan not signaled")
+	}
+
+	// no signal if neither occurs
+	eof = make(chan struct{}, 1)
+	sig = &eofSignal{bytes.NewBufferString("aaaaaaaaaaaaaaaaaaaaa"), 999, eof}
+	if n, err := sig.Read(rb); n != 10 || err != nil {
+		t.Errorf("Read returned unexpected values: (%v, %v)", n, err)
+	}
+	select {
+	case <-eof:
+		t.Error("unexpected EOF signal")
+	default:
+	}
+}
diff --git a/p2p/protocol.go b/p2p/protocol.go
new file mode 100644
index 000000000..3f52205f5
--- /dev/null
+++ b/p2p/protocol.go
@@ -0,0 +1,294 @@
+package p2p
+
+import (
+	"bytes"
+	"time"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+// Protocol represents a P2P subprotocol implementation.
+type Protocol struct {
+	// Name should contain the official protocol name,
+	// often a three-letter word.
+	Name string
+
+	// Version should contain the version number of the protocol.
+	Version uint
+
+	// Length should contain the number of message codes used
+	// by the protocol.
+	Length uint64
+
+	// Run is called in a new groutine when the protocol has been
+	// negotiated with a peer. It should read and write messages from
+	// rw. The Payload for each message must be fully consumed.
+	//
+	// The peer connection is closed when Start returns. It should return
+	// any protocol-level error (such as an I/O error) that is
+	// encountered.
+	Run func(peer *Peer, rw MsgReadWriter) error
+}
+
+func (p Protocol) cap() Cap {
+	return Cap{p.Name, p.Version}
+}
+
+const (
+	baseProtocolVersion    = 2
+	baseProtocolLength     = uint64(16)
+	baseProtocolMaxMsgSize = 10 * 1024 * 1024
+)
+
+const (
+	// devp2p message codes
+	handshakeMsg = 0x00
+	discMsg      = 0x01
+	pingMsg      = 0x02
+	pongMsg      = 0x03
+	getPeersMsg  = 0x04
+	peersMsg     = 0x05
+)
+
+// handshake is the structure of a handshake list.
+type handshake struct {
+	Version    uint64
+	ID         string
+	Caps       []Cap
+	ListenPort uint64
+	NodeID     []byte
+}
+
+func (h *handshake) String() string {
+	return h.ID
+}
+func (h *handshake) Pubkey() []byte {
+	return h.NodeID
+}
+
+// Cap is the structure of a peer capability.
+type Cap struct {
+	Name    string
+	Version uint
+}
+
+func (cap Cap) RlpData() interface{} {
+	return []interface{}{cap.Name, cap.Version}
+}
+
+type capsByName []Cap
+
+func (cs capsByName) Len() int           { return len(cs) }
+func (cs capsByName) Less(i, j int) bool { return cs[i].Name < cs[j].Name }
+func (cs capsByName) Swap(i, j int)      { cs[i], cs[j] = cs[j], cs[i] }
+
+type baseProtocol struct {
+	rw   MsgReadWriter
+	peer *Peer
+}
+
+func runBaseProtocol(peer *Peer, rw MsgReadWriter) error {
+	bp := &baseProtocol{rw, peer}
+	if err := bp.doHandshake(rw); err != nil {
+		return err
+	}
+	// run main loop
+	quit := make(chan error, 1)
+	go func() {
+		for {
+			if err := bp.handle(rw); err != nil {
+				quit <- err
+				break
+			}
+		}
+	}()
+	return bp.loop(quit)
+}
+
+var pingTimeout = 2 * time.Second
+
+func (bp *baseProtocol) loop(quit <-chan error) error {
+	ping := time.NewTimer(pingTimeout)
+	activity := bp.peer.activity.Subscribe(time.Time{})
+	lastActive := time.Time{}
+	defer ping.Stop()
+	defer activity.Unsubscribe()
+
+	getPeersTick := time.NewTicker(10 * time.Second)
+	defer getPeersTick.Stop()
+	err := bp.rw.EncodeMsg(getPeersMsg)
+
+	for err == nil {
+		select {
+		case err = <-quit:
+			return err
+		case <-getPeersTick.C:
+			err = bp.rw.EncodeMsg(getPeersMsg)
+		case event := <-activity.Chan():
+			ping.Reset(pingTimeout)
+			lastActive = event.(time.Time)
+		case t := <-ping.C:
+			if lastActive.Add(pingTimeout * 2).Before(t) {
+				err = newPeerError(errPingTimeout, "")
+			} else if lastActive.Add(pingTimeout).Before(t) {
+				err = bp.rw.EncodeMsg(pingMsg)
+			}
+		}
+	}
+	return err
+}
+
+func (bp *baseProtocol) handle(rw MsgReadWriter) error {
+	msg, err := rw.ReadMsg()
+	if err != nil {
+		return err
+	}
+	if msg.Size > baseProtocolMaxMsgSize {
+		return newPeerError(errMisc, "message too big")
+	}
+	// make sure that the payload has been fully consumed
+	defer msg.Discard()
+
+	switch msg.Code {
+	case handshakeMsg:
+		return newPeerError(errProtocolBreach, "extra handshake received")
+
+	case discMsg:
+		var reason [1]DiscReason
+		if err := msg.Decode(&reason); err != nil {
+			return err
+		}
+		return discRequestedError(reason[0])
+
+	case pingMsg:
+		return bp.rw.EncodeMsg(pongMsg)
+
+	case pongMsg:
+
+	case getPeersMsg:
+		peers := bp.peerList()
+		// this is dangerous. the spec says that we should _delay_
+		// sending the response if no new information is available.
+		// this means that would need to send a response later when
+		// new peers become available.
+		//
+		// TODO: add event mechanism to notify baseProtocol for new peers
+		if len(peers) > 0 {
+			return bp.rw.EncodeMsg(peersMsg, peers)
+		}
+
+	case peersMsg:
+		var peers []*peerAddr
+		if err := msg.Decode(&peers); err != nil {
+			return err
+		}
+		for _, addr := range peers {
+			bp.peer.Debugf("received peer suggestion: %v", addr)
+			bp.peer.newPeerAddr <- addr
+		}
+
+	default:
+		return newPeerError(errInvalidMsgCode, "unknown message code %v", msg.Code)
+	}
+	return nil
+}
+
+func (bp *baseProtocol) doHandshake(rw MsgReadWriter) error {
+	// send our handshake
+	if err := rw.WriteMsg(bp.handshakeMsg()); err != nil {
+		return err
+	}
+
+	// read and handle remote handshake
+	msg, err := rw.ReadMsg()
+	if err != nil {
+		return err
+	}
+	if msg.Code != handshakeMsg {
+		return newPeerError(errProtocolBreach, "first message must be handshake, got %x", msg.Code)
+	}
+	if msg.Size > baseProtocolMaxMsgSize {
+		return newPeerError(errMisc, "message too big")
+	}
+
+	var hs handshake
+	if err := msg.Decode(&hs); err != nil {
+		return err
+	}
+
+	// validate handshake info
+	if hs.Version != baseProtocolVersion {
+		return newPeerError(errP2PVersionMismatch, "Require protocol %d, received %d\n",
+			baseProtocolVersion, hs.Version)
+	}
+	if len(hs.NodeID) == 0 {
+		return newPeerError(errPubkeyMissing, "")
+	}
+	if len(hs.NodeID) != 64 {
+		return newPeerError(errPubkeyInvalid, "require 512 bit, got %v", len(hs.NodeID)*8)
+	}
+	if da := bp.peer.dialAddr; da != nil {
+		// verify that the peer we wanted to connect to
+		// actually holds the target public key.
+		if da.Pubkey != nil && !bytes.Equal(da.Pubkey, hs.NodeID) {
+			return newPeerError(errPubkeyForbidden, "dial address pubkey mismatch")
+		}
+	}
+	pa := newPeerAddr(bp.peer.conn.RemoteAddr(), hs.NodeID)
+	if err := bp.peer.pubkeyHook(pa); err != nil {
+		return newPeerError(errPubkeyForbidden, "%v", err)
+	}
+
+	// TODO: remove Caps with empty name
+
+	var addr *peerAddr
+	if hs.ListenPort != 0 {
+		addr = newPeerAddr(bp.peer.conn.RemoteAddr(), hs.NodeID)
+		addr.Port = hs.ListenPort
+	}
+	bp.peer.setHandshakeInfo(&hs, addr, hs.Caps)
+	bp.peer.startSubprotocols(hs.Caps)
+	return nil
+}
+
+func (bp *baseProtocol) handshakeMsg() Msg {
+	var (
+		port uint64
+		caps []interface{}
+	)
+	if bp.peer.ourListenAddr != nil {
+		port = bp.peer.ourListenAddr.Port
+	}
+	for _, proto := range bp.peer.protocols {
+		caps = append(caps, proto.cap())
+	}
+	return NewMsg(handshakeMsg,
+		baseProtocolVersion,
+		bp.peer.ourID.String(),
+		caps,
+		port,
+		bp.peer.ourID.Pubkey()[1:],
+	)
+}
+
+func (bp *baseProtocol) peerList() []ethutil.RlpEncodable {
+	peers := bp.peer.otherPeers()
+	ds := make([]ethutil.RlpEncodable, 0, len(peers))
+	for _, p := range peers {
+		p.infolock.Lock()
+		addr := p.listenAddr
+		p.infolock.Unlock()
+		// filter out this peer and peers that are not listening or
+		// have not completed the handshake.
+		// TODO: track previously sent peers and exclude them as well.
+		if p == bp.peer || addr == nil {
+			continue
+		}
+		ds = append(ds, addr)
+	}
+	ourAddr := bp.peer.ourListenAddr
+	if ourAddr != nil && !ourAddr.IP.IsLoopback() && !ourAddr.IP.IsUnspecified() {
+		ds = append(ds, ourAddr)
+	}
+	return ds
+}
diff --git a/p2p/protocol_test.go b/p2p/protocol_test.go
new file mode 100644
index 000000000..65f26fb12
--- /dev/null
+++ b/p2p/protocol_test.go
@@ -0,0 +1,58 @@
+package p2p
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestBaseProtocolDisconnect(t *testing.T) {
+	peer := NewPeer(NewSimpleClientIdentity("p1", "", "", "foo"), nil)
+	peer.ourID = NewSimpleClientIdentity("p2", "", "", "bar")
+	peer.pubkeyHook = func(*peerAddr) error { return nil }
+
+	rw1, rw2 := MsgPipe()
+	done := make(chan struct{})
+	go func() {
+		if err := expectMsg(rw2, handshakeMsg); err != nil {
+			t.Error(err)
+		}
+		err := rw2.EncodeMsg(handshakeMsg,
+			baseProtocolVersion,
+			"",
+			[]interface{}{},
+			0,
+			make([]byte, 64),
+		)
+		if err != nil {
+			t.Error(err)
+		}
+		if err := expectMsg(rw2, getPeersMsg); err != nil {
+			t.Error(err)
+		}
+		if err := rw2.EncodeMsg(discMsg, DiscQuitting); err != nil {
+			t.Error(err)
+		}
+		close(done)
+	}()
+
+	if err := runBaseProtocol(peer, rw1); err == nil {
+		t.Errorf("base protocol returned without error")
+	} else if reason, ok := err.(discRequestedError); !ok || reason != DiscQuitting {
+		t.Errorf("base protocol returned wrong error: %v", err)
+	}
+	<-done
+}
+
+func expectMsg(r MsgReader, code uint64) error {
+	msg, err := r.ReadMsg()
+	if err != nil {
+		return err
+	}
+	if err := msg.Discard(); err != nil {
+		return err
+	}
+	if msg.Code != code {
+		return fmt.Errorf("wrong message code: got %d, expected %d", msg.Code, code)
+	}
+	return nil
+}
diff --git a/p2p/server.go b/p2p/server.go
new file mode 100644
index 000000000..8a6087566
--- /dev/null
+++ b/p2p/server.go
@@ -0,0 +1,467 @@
+package p2p
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/ethereum/go-ethereum/logger"
+)
+
+const (
+	outboundAddressPoolSize   = 500
+	defaultDialTimeout        = 10 * time.Second
+	portMappingUpdateInterval = 15 * time.Minute
+	portMappingTimeout        = 20 * time.Minute
+)
+
+var srvlog = logger.NewLogger("P2P Server")
+
+// Server manages all peer connections.
+//
+// The fields of Server are used as configuration parameters.
+// You should set them before starting the Server. Fields may not be
+// modified while the server is running.
+type Server struct {
+	// This field must be set to a valid client identity.
+	Identity ClientIdentity
+
+	// MaxPeers is the maximum number of peers that can be
+	// connected. It must be greater than zero.
+	MaxPeers int
+
+	// Protocols should contain the protocols supported
+	// by the server. Matching protocols are launched for
+	// each peer.
+	Protocols []Protocol
+
+	// If Blacklist is set to a non-nil value, the given Blacklist
+	// is used to verify peer connections.
+	Blacklist Blacklist
+
+	// If ListenAddr is set to a non-nil address, the server
+	// will listen for incoming connections.
+	//
+	// If the port is zero, the operating system will pick a port. The
+	// ListenAddr field will be updated with the actual address when
+	// the server is started.
+	ListenAddr string
+
+	// If set to a non-nil value, the given NAT port mapper
+	// is used to make the listening port available to the
+	// Internet.
+	NAT NAT
+
+	// If Dialer is set to a non-nil value, the given Dialer
+	// is used to dial outbound peer connections.
+	Dialer *net.Dialer
+
+	// If NoDial is true, the server will not dial any peers.
+	NoDial bool
+
+	// Hook for testing. This is useful because we can inhibit
+	// the whole protocol stack.
+	newPeerFunc peerFunc
+
+	lock      sync.RWMutex
+	running   bool
+	listener  net.Listener
+	laddr     *net.TCPAddr // real listen addr
+	peers     []*Peer
+	peerSlots chan int
+	peerCount int
+
+	quit           chan struct{}
+	wg             sync.WaitGroup
+	peerConnect    chan *peerAddr
+	peerDisconnect chan *Peer
+}
+
+// NAT is implemented by NAT traversal methods.
+type NAT interface {
+	GetExternalAddress() (net.IP, error)
+	AddPortMapping(protocol string, extport, intport int, name string, lifetime time.Duration) error
+	DeletePortMapping(protocol string, extport, intport int) error
+
+	// Should return name of the method.
+	String() string
+}
+
+type peerFunc func(srv *Server, c net.Conn, dialAddr *peerAddr) *Peer
+
+// Peers returns all connected peers.
+func (srv *Server) Peers() (peers []*Peer) {
+	srv.lock.RLock()
+	defer srv.lock.RUnlock()
+	for _, peer := range srv.peers {
+		if peer != nil {
+			peers = append(peers, peer)
+		}
+	}
+	return
+}
+
+// PeerCount returns the number of connected peers.
+func (srv *Server) PeerCount() int {
+	srv.lock.RLock()
+	defer srv.lock.RUnlock()
+	return srv.peerCount
+}
+
+// SuggestPeer injects an address into the outbound address pool.
+func (srv *Server) SuggestPeer(ip net.IP, port int, nodeID []byte) {
+	select {
+	case srv.peerConnect <- &peerAddr{ip, uint64(port), nodeID}:
+	default: // don't block
+	}
+}
+
+// Broadcast sends an RLP-encoded message to all connected peers.
+// This method is deprecated and will be removed later.
+func (srv *Server) Broadcast(protocol string, code uint64, data ...interface{}) {
+	var payload []byte
+	if data != nil {
+		payload = encodePayload(data...)
+	}
+	srv.lock.RLock()
+	defer srv.lock.RUnlock()
+	for _, peer := range srv.peers {
+		if peer != nil {
+			var msg = Msg{Code: code}
+			if data != nil {
+				msg.Payload = bytes.NewReader(payload)
+				msg.Size = uint32(len(payload))
+			}
+			peer.writeProtoMsg(protocol, msg)
+		}
+	}
+}
+
+// Start starts running the server.
+// Servers can be re-used and started again after stopping.
+func (srv *Server) Start() (err error) {
+	srv.lock.Lock()
+	defer srv.lock.Unlock()
+	if srv.running {
+		return errors.New("server already running")
+	}
+	srvlog.Infoln("Starting Server")
+
+	// initialize fields
+	if srv.Identity == nil {
+		return fmt.Errorf("Server.Identity must be set to a non-nil identity")
+	}
+	if srv.MaxPeers <= 0 {
+		return fmt.Errorf("Server.MaxPeers must be > 0")
+	}
+	srv.quit = make(chan struct{})
+	srv.peers = make([]*Peer, srv.MaxPeers)
+	srv.peerSlots = make(chan int, srv.MaxPeers)
+	srv.peerConnect = make(chan *peerAddr, outboundAddressPoolSize)
+	srv.peerDisconnect = make(chan *Peer)
+	if srv.newPeerFunc == nil {
+		srv.newPeerFunc = newServerPeer
+	}
+	if srv.Blacklist == nil {
+		srv.Blacklist = NewBlacklist()
+	}
+	if srv.Dialer == nil {
+		srv.Dialer = &net.Dialer{Timeout: defaultDialTimeout}
+	}
+
+	if srv.ListenAddr != "" {
+		if err := srv.startListening(); err != nil {
+			return err
+		}
+	}
+	if !srv.NoDial {
+		srv.wg.Add(1)
+		go srv.dialLoop()
+	}
+	if srv.NoDial && srv.ListenAddr == "" {
+		srvlog.Warnln("I will be kind-of useless, neither dialing nor listening.")
+	}
+
+	// make all slots available
+	for i := range srv.peers {
+		srv.peerSlots <- i
+	}
+	// note: discLoop is not part of WaitGroup
+	go srv.discLoop()
+	srv.running = true
+	return nil
+}
+
+func (srv *Server) startListening() error {
+	listener, err := net.Listen("tcp", srv.ListenAddr)
+	if err != nil {
+		return err
+	}
+	srv.ListenAddr = listener.Addr().String()
+	srv.laddr = listener.Addr().(*net.TCPAddr)
+	srv.listener = listener
+	srv.wg.Add(1)
+	go srv.listenLoop()
+	if !srv.laddr.IP.IsLoopback() && srv.NAT != nil {
+		srv.wg.Add(1)
+		go srv.natLoop(srv.laddr.Port)
+	}
+	return nil
+}
+
+// Stop terminates the server and all active peer connections.
+// It blocks until all active connections have been closed.
+func (srv *Server) Stop() {
+	srv.lock.Lock()
+	if !srv.running {
+		srv.lock.Unlock()
+		return
+	}
+	srv.running = false
+	srv.lock.Unlock()
+
+	srvlog.Infoln("Stopping server")
+	if srv.listener != nil {
+		// this unblocks listener Accept
+		srv.listener.Close()
+	}
+	close(srv.quit)
+	for _, peer := range srv.Peers() {
+		peer.Disconnect(DiscQuitting)
+	}
+	srv.wg.Wait()
+
+	// wait till they actually disconnect
+	// this is checked by claiming all peerSlots.
+	// slots become available as the peers disconnect.
+	for i := 0; i < cap(srv.peerSlots); i++ {
+		<-srv.peerSlots
+	}
+	// terminate discLoop
+	close(srv.peerDisconnect)
+}
+
+func (srv *Server) discLoop() {
+	for peer := range srv.peerDisconnect {
+		// peer has just disconnected. free up its slot.
+		srvlog.Infof("%v is gone", peer)
+		srv.peerSlots <- peer.slot
+		srv.lock.Lock()
+		srv.peers[peer.slot] = nil
+		srv.lock.Unlock()
+	}
+}
+
+// main loop for adding connections via listening
+func (srv *Server) listenLoop() {
+	defer srv.wg.Done()
+
+	srvlog.Infoln("Listening on", srv.listener.Addr())
+	for {
+		select {
+		case slot := <-srv.peerSlots:
+			conn, err := srv.listener.Accept()
+			if err != nil {
+				srv.peerSlots <- slot
+				return
+			}
+			srvlog.Debugf("Accepted conn %v (slot %d)\n", conn.RemoteAddr(), slot)
+			srv.addPeer(conn, nil, slot)
+		case <-srv.quit:
+			return
+		}
+	}
+}
+
+func (srv *Server) natLoop(port int) {
+	defer srv.wg.Done()
+	for {
+		srv.updatePortMapping(port)
+		select {
+		case <-time.After(portMappingUpdateInterval):
+			// one more round
+		case <-srv.quit:
+			srv.removePortMapping(port)
+			return
+		}
+	}
+}
+
+func (srv *Server) updatePortMapping(port int) {
+	srvlog.Infoln("Attempting to map port", port, "with", srv.NAT)
+	err := srv.NAT.AddPortMapping("tcp", port, port, "ethereum p2p", portMappingTimeout)
+	if err != nil {
+		srvlog.Errorln("Port mapping error:", err)
+		return
+	}
+	extip, err := srv.NAT.GetExternalAddress()
+	if err != nil {
+		srvlog.Errorln("Error getting external IP:", err)
+		return
+	}
+	srv.lock.Lock()
+	extaddr := *(srv.listener.Addr().(*net.TCPAddr))
+	extaddr.IP = extip
+	srvlog.Infoln("Mapped port, external addr is", &extaddr)
+	srv.laddr = &extaddr
+	srv.lock.Unlock()
+}
+
+func (srv *Server) removePortMapping(port int) {
+	srvlog.Infoln("Removing port mapping for", port, "with", srv.NAT)
+	srv.NAT.DeletePortMapping("tcp", port, port)
+}
+
+func (srv *Server) dialLoop() {
+	defer srv.wg.Done()
+	var (
+		suggest chan *peerAddr
+		slot    *int
+		slots   = srv.peerSlots
+	)
+	for {
+		select {
+		case i := <-slots:
+			// we need a peer in slot i, slot reserved
+			slot = &i
+			// now we can watch for candidate peers in the next loop
+			suggest = srv.peerConnect
+			// do not consume more until candidate peer is found
+			slots = nil
+
+		case desc := <-suggest:
+			// candidate peer found, will dial out asyncronously
+			// if connection fails slot will be released
+			go srv.dialPeer(desc, *slot)
+			// we can watch if more peers needed in the next loop
+			slots = srv.peerSlots
+			// until then we dont care about candidate peers
+			suggest = nil
+
+		case <-srv.quit:
+			// give back the currently reserved slot
+			if slot != nil {
+				srv.peerSlots <- *slot
+			}
+			return
+		}
+	}
+}
+
+// connect to peer via dial out
+func (srv *Server) dialPeer(desc *peerAddr, slot int) {
+	srvlog.Debugf("Dialing %v (slot %d)\n", desc, slot)
+	conn, err := srv.Dialer.Dial(desc.Network(), desc.String())
+	if err != nil {
+		srvlog.Errorf("Dial error: %v", err)
+		srv.peerSlots <- slot
+		return
+	}
+	go srv.addPeer(conn, desc, slot)
+}
+
+// creates the new peer object and inserts it into its slot
+func (srv *Server) addPeer(conn net.Conn, desc *peerAddr, slot int) *Peer {
+	srv.lock.Lock()
+	defer srv.lock.Unlock()
+	if !srv.running {
+		conn.Close()
+		srv.peerSlots <- slot // release slot
+		return nil
+	}
+	peer := srv.newPeerFunc(srv, conn, desc)
+	peer.slot = slot
+	srv.peers[slot] = peer
+	srv.peerCount++
+	go func() { peer.loop(); srv.peerDisconnect <- peer }()
+	return peer
+}
+
+// removes peer: sending disconnect msg, stop peer, remove rom list/table, release slot
+func (srv *Server) removePeer(peer *Peer) {
+	srv.lock.Lock()
+	defer srv.lock.Unlock()
+	srvlog.Debugf("Removing peer %v %v (slot %v)\n", peer, peer.slot)
+	if srv.peers[peer.slot] != peer {
+		srvlog.Warnln("Invalid peer to remove:", peer)
+		return
+	}
+	// remove from list and index
+	srv.peerCount--
+	srv.peers[peer.slot] = nil
+	// release slot to signal need for a new peer, last!
+	srv.peerSlots <- peer.slot
+}
+
+func (srv *Server) verifyPeer(addr *peerAddr) error {
+	if srv.Blacklist.Exists(addr.Pubkey) {
+		return errors.New("blacklisted")
+	}
+	if bytes.Equal(srv.Identity.Pubkey()[1:], addr.Pubkey) {
+		return newPeerError(errPubkeyForbidden, "not allowed to connect to srv")
+	}
+	srv.lock.RLock()
+	defer srv.lock.RUnlock()
+	for _, peer := range srv.peers {
+		if peer != nil {
+			id := peer.Identity()
+			if id != nil && bytes.Equal(id.Pubkey(), addr.Pubkey) {
+				return errors.New("already connected")
+			}
+		}
+	}
+	return nil
+}
+
+type Blacklist interface {
+	Get([]byte) (bool, error)
+	Put([]byte) error
+	Delete([]byte) error
+	Exists(pubkey []byte) (ok bool)
+}
+
+type BlacklistMap struct {
+	blacklist map[string]bool
+	lock      sync.RWMutex
+}
+
+func NewBlacklist() *BlacklistMap {
+	return &BlacklistMap{
+		blacklist: make(map[string]bool),
+	}
+}
+
+func (self *BlacklistMap) Get(pubkey []byte) (bool, error) {
+	self.lock.RLock()
+	defer self.lock.RUnlock()
+	v, ok := self.blacklist[string(pubkey)]
+	var err error
+	if !ok {
+		err = fmt.Errorf("not found")
+	}
+	return v, err
+}
+
+func (self *BlacklistMap) Exists(pubkey []byte) (ok bool) {
+	self.lock.RLock()
+	defer self.lock.RUnlock()
+	_, ok = self.blacklist[string(pubkey)]
+	return
+}
+
+func (self *BlacklistMap) Put(pubkey []byte) error {
+	self.lock.RLock()
+	defer self.lock.RUnlock()
+	self.blacklist[string(pubkey)] = true
+	return nil
+}
+
+func (self *BlacklistMap) Delete(pubkey []byte) error {
+	self.lock.RLock()
+	defer self.lock.RUnlock()
+	delete(self.blacklist, string(pubkey))
+	return nil
+}
diff --git a/p2p/server_test.go b/p2p/server_test.go
new file mode 100644
index 000000000..5c0d08d39
--- /dev/null
+++ b/p2p/server_test.go
@@ -0,0 +1,161 @@
+package p2p
+
+import (
+	"bytes"
+	"io"
+	"net"
+	"sync"
+	"testing"
+	"time"
+)
+
+func startTestServer(t *testing.T, pf peerFunc) *Server {
+	server := &Server{
+		Identity:    NewSimpleClientIdentity("clientIdentifier", "version", "customIdentifier", "pubkey"),
+		MaxPeers:    10,
+		ListenAddr:  "127.0.0.1:0",
+		newPeerFunc: pf,
+	}
+	if err := server.Start(); err != nil {
+		t.Fatalf("Could not start server: %v", err)
+	}
+	return server
+}
+
+func TestServerListen(t *testing.T) {
+	defer testlog(t).detach()
+
+	// start the test server
+	connected := make(chan *Peer)
+	srv := startTestServer(t, func(srv *Server, conn net.Conn, dialAddr *peerAddr) *Peer {
+		if conn == nil {
+			t.Error("peer func called with nil conn")
+		}
+		if dialAddr != nil {
+			t.Error("peer func called with non-nil dialAddr")
+		}
+		peer := newPeer(conn, nil, dialAddr)
+		connected <- peer
+		return peer
+	})
+	defer close(connected)
+	defer srv.Stop()
+
+	// dial the test server
+	conn, err := net.DialTimeout("tcp", srv.ListenAddr, 5*time.Second)
+	if err != nil {
+		t.Fatalf("could not dial: %v", err)
+	}
+	defer conn.Close()
+
+	select {
+	case peer := <-connected:
+		if peer.conn.LocalAddr().String() != conn.RemoteAddr().String() {
+			t.Errorf("peer started with wrong conn: got %v, want %v",
+				peer.conn.LocalAddr(), conn.RemoteAddr())
+		}
+	case <-time.After(1 * time.Second):
+		t.Error("server did not accept within one second")
+	}
+}
+
+func TestServerDial(t *testing.T) {
+	defer testlog(t).detach()
+
+	// run a fake TCP server to handle the connection.
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("could not setup listener: %v")
+	}
+	defer listener.Close()
+	accepted := make(chan net.Conn)
+	go func() {
+		conn, err := listener.Accept()
+		if err != nil {
+			t.Error("acccept error:", err)
+		}
+		conn.Close()
+		accepted <- conn
+	}()
+
+	// start the test server
+	connected := make(chan *Peer)
+	srv := startTestServer(t, func(srv *Server, conn net.Conn, dialAddr *peerAddr) *Peer {
+		if conn == nil {
+			t.Error("peer func called with nil conn")
+		}
+		peer := newPeer(conn, nil, dialAddr)
+		connected <- peer
+		return peer
+	})
+	defer close(connected)
+	defer srv.Stop()
+
+	// tell the server to connect.
+	connAddr := newPeerAddr(listener.Addr(), nil)
+	srv.peerConnect <- connAddr
+
+	select {
+	case conn := <-accepted:
+		select {
+		case peer := <-connected:
+			if peer.conn.RemoteAddr().String() != conn.LocalAddr().String() {
+				t.Errorf("peer started with wrong conn: got %v, want %v",
+					peer.conn.RemoteAddr(), conn.LocalAddr())
+			}
+			if peer.dialAddr != connAddr {
+				t.Errorf("peer started with wrong dialAddr: got %v, want %v",
+					peer.dialAddr, connAddr)
+			}
+		case <-time.After(1 * time.Second):
+			t.Error("server did not launch peer within one second")
+		}
+
+	case <-time.After(1 * time.Second):
+		t.Error("server did not connect within one second")
+	}
+}
+
+func TestServerBroadcast(t *testing.T) {
+	defer testlog(t).detach()
+	var connected sync.WaitGroup
+	srv := startTestServer(t, func(srv *Server, c net.Conn, dialAddr *peerAddr) *Peer {
+		peer := newPeer(c, []Protocol{discard}, dialAddr)
+		peer.startSubprotocols([]Cap{discard.cap()})
+		connected.Done()
+		return peer
+	})
+	defer srv.Stop()
+
+	// dial a bunch of conns
+	var conns = make([]net.Conn, 8)
+	connected.Add(len(conns))
+	deadline := time.Now().Add(3 * time.Second)
+	dialer := &net.Dialer{Deadline: deadline}
+	for i := range conns {
+		conn, err := dialer.Dial("tcp", srv.ListenAddr)
+		if err != nil {
+			t.Fatalf("conn %d: dial error: %v", i, err)
+		}
+		defer conn.Close()
+		conn.SetDeadline(deadline)
+		conns[i] = conn
+	}
+	connected.Wait()
+
+	// broadcast one message
+	srv.Broadcast("discard", 0, "foo")
+	goldbuf := new(bytes.Buffer)
+	writeMsg(goldbuf, NewMsg(16, "foo"))
+	golden := goldbuf.Bytes()
+
+	// check that the message has been written everywhere
+	for i, conn := range conns {
+		buf := make([]byte, len(golden))
+		if _, err := io.ReadFull(conn, buf); err != nil {
+			t.Errorf("conn %d: read error: %v", i, err)
+		} else if !bytes.Equal(buf, golden) {
+			t.Errorf("conn %d: msg mismatch\ngot:  %x\nwant: %x", i, buf, golden)
+		}
+	}
+}
diff --git a/p2p/testlog_test.go b/p2p/testlog_test.go
new file mode 100644
index 000000000..951d43243
--- /dev/null
+++ b/p2p/testlog_test.go
@@ -0,0 +1,28 @@
+package p2p
+
+import (
+	"testing"
+
+	"github.com/ethereum/go-ethereum/logger"
+)
+
+type testLogger struct{ t *testing.T }
+
+func testlog(t *testing.T) testLogger {
+	logger.Reset()
+	l := testLogger{t}
+	logger.AddLogSystem(l)
+	return l
+}
+
+func (testLogger) GetLogLevel() logger.LogLevel { return logger.DebugLevel }
+func (testLogger) SetLogLevel(logger.LogLevel)  {}
+
+func (l testLogger) LogPrint(level logger.LogLevel, msg string) {
+	l.t.Logf("%s", msg)
+}
+
+func (testLogger) detach() {
+	logger.Flush()
+	logger.Reset()
+}
diff --git a/p2p/testpoc7.go b/p2p/testpoc7.go
new file mode 100644
index 000000000..c0cc5c544
--- /dev/null
+++ b/p2p/testpoc7.go
@@ -0,0 +1,40 @@
+// +build none
+
+package main
+
+import (
+	"fmt"
+	"log"
+	"net"
+	"os"
+
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/obscuren/secp256k1-go"
+)
+
+func main() {
+	logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.DebugLevel))
+
+	pub, _ := secp256k1.GenerateKeyPair()
+	srv := p2p.Server{
+		MaxPeers:   10,
+		Identity:   p2p.NewSimpleClientIdentity("test", "1.0", "", string(pub)),
+		ListenAddr: ":30303",
+		NAT:        p2p.PMP(net.ParseIP("10.0.0.1")),
+	}
+	if err := srv.Start(); err != nil {
+		fmt.Println("could not start server:", err)
+		os.Exit(1)
+	}
+
+	// add seed peers
+	seed, err := net.ResolveTCPAddr("tcp", "poc-7.ethdev.com:30303")
+	if err != nil {
+		fmt.Println("couldn't resolve:", err)
+		os.Exit(1)
+	}
+	srv.SuggestPeer(seed.IP, seed.Port, nil)
+
+	select {}
+}
diff --git a/peer.go b/peer.go
new file mode 100644
index 000000000..13f0239d4
--- /dev/null
+++ b/peer.go
@@ -0,0 +1,881 @@
+package eth
+
+import (
+	"bytes"
+	"container/list"
+	"fmt"
+	"math"
+	"math/big"
+	"net"
+	"strconv"
+	"strings"
+	"sync/atomic"
+	"time"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/wire"
+)
+
+var peerlogger = logger.NewLogger("PEER")
+
+const (
+	// The size of the output buffer for writing messages
+	outputBufferSize = 50
+	// Current protocol version
+	ProtocolVersion = 49
+	// Current P2P version
+	P2PVersion = 2
+	// Ethereum network version
+	NetVersion = 0
+	// Interval for ping/pong message
+	pingPongTimer = 2 * time.Second
+)
+
+type DiscReason byte
+
+const (
+	// Values are given explicitly instead of by iota because these values are
+	// defined by the wire protocol spec; it is easier for humans to ensure
+	// correctness when values are explicit.
+	DiscRequested DiscReason = iota
+	DiscReTcpSysErr
+	DiscBadProto
+	DiscBadPeer
+	DiscTooManyPeers
+	DiscConnDup
+	DiscGenesisErr
+	DiscProtoErr
+	DiscQuitting
+)
+
+var discReasonToString = []string{
+	"requested",
+	"TCP sys error",
+	"bad protocol",
+	"useless peer",
+	"too many peers",
+	"already connected",
+	"wrong genesis block",
+	"incompatible network",
+	"quitting",
+}
+
+func (d DiscReason) String() string {
+	if len(discReasonToString) < int(d) {
+		return "Unknown"
+	}
+
+	return discReasonToString[d]
+}
+
+// Peer capabilities
+type Caps byte
+
+const (
+	CapPeerDiscTy Caps = 1 << iota
+	CapTxTy
+	CapChainTy
+
+	CapDefault = CapChainTy | CapTxTy | CapPeerDiscTy
+)
+
+var capsToString = map[Caps]string{
+	CapPeerDiscTy: "Peer discovery",
+	CapTxTy:       "Transaction relaying",
+	CapChainTy:    "Block chain relaying",
+}
+
+func (c Caps) IsCap(cap Caps) bool {
+	return c&cap > 0
+}
+
+func (c Caps) String() string {
+	var caps []string
+	if c.IsCap(CapPeerDiscTy) {
+		caps = append(caps, capsToString[CapPeerDiscTy])
+	}
+	if c.IsCap(CapChainTy) {
+		caps = append(caps, capsToString[CapChainTy])
+	}
+	if c.IsCap(CapTxTy) {
+		caps = append(caps, capsToString[CapTxTy])
+	}
+
+	return strings.Join(caps, " | ")
+}
+
+type Peer struct {
+	// Ethereum interface
+	ethereum *Ethereum
+	// Net connection
+	conn net.Conn
+	// Output queue which is used to communicate and handle messages
+	outputQueue chan *wire.Msg
+	// Quit channel
+	quit chan bool
+	// Determines whether it's an inbound or outbound peer
+	inbound bool
+	// Flag for checking the peer's connectivity state
+	connected  int32
+	disconnect int32
+	// Last known message send
+	lastSend time.Time
+	// Indicated whether a verack has been send or not
+	// This flag is used by writeMessage to check if messages are allowed
+	// to be send or not. If no version is known all messages are ignored.
+	versionKnown bool
+	statusKnown  bool
+
+	// Last received pong message
+	lastPong            int64
+	lastBlockReceived   time.Time
+	doneFetchingHashes  bool
+	lastHashAt          time.Time
+	lastHashRequestedAt time.Time
+
+	host             []byte
+	port             uint16
+	caps             Caps
+	td               *big.Int
+	bestHash         []byte
+	lastReceivedHash []byte
+	requestedHashes  [][]byte
+
+	// This peer's public key
+	pubkey []byte
+
+	// Indicated whether the node is catching up or not
+	catchingUp      bool
+	diverted        bool
+	blocksRequested int
+
+	version string
+
+	// We use this to give some kind of pingtime to a node, not very accurate, could be improved.
+	pingTime      time.Duration
+	pingStartTime time.Time
+
+	lastRequestedBlock *types.Block
+
+	protocolCaps *ethutil.Value
+}
+
+func NewPeer(conn net.Conn, ethereum *Ethereum, inbound bool) *Peer {
+	pubkey := ethereum.KeyManager().PublicKey()[1:]
+
+	return &Peer{
+		outputQueue:        make(chan *wire.Msg, outputBufferSize),
+		quit:               make(chan bool),
+		ethereum:           ethereum,
+		conn:               conn,
+		inbound:            inbound,
+		disconnect:         0,
+		connected:          1,
+		port:               30303,
+		pubkey:             pubkey,
+		blocksRequested:    10,
+		caps:               ethereum.ServerCaps(),
+		version:            ethereum.ClientIdentity().String(),
+		protocolCaps:       ethutil.NewValue(nil),
+		td:                 big.NewInt(0),
+		doneFetchingHashes: true,
+	}
+}
+
+func NewOutboundPeer(addr string, ethereum *Ethereum, caps Caps) *Peer {
+	p := &Peer{
+		outputQueue:        make(chan *wire.Msg, outputBufferSize),
+		quit:               make(chan bool),
+		ethereum:           ethereum,
+		inbound:            false,
+		connected:          0,
+		disconnect:         0,
+		port:               30303,
+		caps:               caps,
+		version:            ethereum.ClientIdentity().String(),
+		protocolCaps:       ethutil.NewValue(nil),
+		td:                 big.NewInt(0),
+		doneFetchingHashes: true,
+	}
+
+	// Set up the connection in another goroutine so we don't block the main thread
+	go func() {
+		conn, err := p.Connect(addr)
+		if err != nil {
+			//peerlogger.Debugln("Connection to peer failed. Giving up.", err)
+			p.Stop()
+			return
+		}
+		p.conn = conn
+
+		// Atomically set the connection state
+		atomic.StoreInt32(&p.connected, 1)
+		atomic.StoreInt32(&p.disconnect, 0)
+
+		p.Start()
+	}()
+
+	return p
+}
+
+func (self *Peer) Connect(addr string) (conn net.Conn, err error) {
+	const maxTries = 3
+	for attempts := 0; attempts < maxTries; attempts++ {
+		conn, err = net.DialTimeout("tcp", addr, 10*time.Second)
+		if err != nil {
+			time.Sleep(time.Duration(attempts*20) * time.Second)
+			continue
+		}
+
+		// Success
+		return
+	}
+
+	return
+}
+
+// Getters
+func (p *Peer) PingTime() string {
+	return p.pingTime.String()
+}
+func (p *Peer) Inbound() bool {
+	return p.inbound
+}
+func (p *Peer) LastSend() time.Time {
+	return p.lastSend
+}
+func (p *Peer) LastPong() int64 {
+	return p.lastPong
+}
+func (p *Peer) Host() []byte {
+	return p.host
+}
+func (p *Peer) Port() uint16 {
+	return p.port
+}
+func (p *Peer) Version() string {
+	return p.version
+}
+func (p *Peer) Connected() *int32 {
+	return &p.connected
+}
+
+// Setters
+func (p *Peer) SetVersion(version string) {
+	p.version = version
+}
+
+// Outputs any RLP encoded data to the peer
+func (p *Peer) QueueMessage(msg *wire.Msg) {
+	if atomic.LoadInt32(&p.connected) != 1 {
+		return
+	}
+	p.outputQueue <- msg
+}
+
+func (p *Peer) writeMessage(msg *wire.Msg) {
+	// Ignore the write if we're not connected
+	if atomic.LoadInt32(&p.connected) != 1 {
+		return
+	}
+
+	if !p.versionKnown {
+		switch msg.Type {
+		case wire.MsgHandshakeTy: // Ok
+		default: // Anything but ack is allowed
+			return
+		}
+	} else {
+		/*
+			if !p.statusKnown {
+				switch msg.Type {
+				case wire.MsgStatusTy: // Ok
+				default: // Anything but ack is allowed
+					return
+				}
+			}
+		*/
+	}
+
+	peerlogger.DebugDetailf("(%v) <= %v\n", p.conn.RemoteAddr(), formatMessage(msg))
+
+	err := wire.WriteMessage(p.conn, msg)
+	if err != nil {
+		peerlogger.Debugln(" Can't send message:", err)
+		// Stop the client if there was an error writing to it
+		p.Stop()
+		return
+	}
+}
+
+// Outbound message handler. Outbound messages are handled here
+func (p *Peer) HandleOutbound() {
+	// The ping timer. Makes sure that every 2 minutes a ping is send to the peer
+	pingTimer := time.NewTicker(pingPongTimer)
+	serviceTimer := time.NewTicker(10 * time.Second)
+
+out:
+	for {
+	skip:
+		select {
+		// Main message queue. All outbound messages are processed through here
+		case msg := <-p.outputQueue:
+			if !p.statusKnown {
+				switch msg.Type {
+				case wire.MsgTxTy, wire.MsgGetBlockHashesTy, wire.MsgBlockHashesTy, wire.MsgGetBlocksTy, wire.MsgBlockTy:
+					break skip
+				}
+			}
+
+			switch msg.Type {
+			case wire.MsgGetBlockHashesTy:
+				p.lastHashRequestedAt = time.Now()
+			}
+
+			p.writeMessage(msg)
+			p.lastSend = time.Now()
+
+		// Ping timer
+		case <-pingTimer.C:
+			p.writeMessage(wire.NewMessage(wire.MsgPingTy, ""))
+			p.pingStartTime = time.Now()
+
+		// Service timer takes care of peer broadcasting, transaction
+		// posting or block posting
+		case <-serviceTimer.C:
+			p.QueueMessage(wire.NewMessage(wire.MsgGetPeersTy, ""))
+
+		case <-p.quit:
+			// Break out of the for loop if a quit message is posted
+			break out
+		}
+	}
+
+clean:
+	// This loop is for draining the output queue and anybody waiting for us
+	for {
+		select {
+		case <-p.outputQueue:
+			// TODO
+		default:
+			break clean
+		}
+	}
+}
+
+func formatMessage(msg *wire.Msg) (ret string) {
+	ret = fmt.Sprintf("%v %v", msg.Type, msg.Data)
+
+	/*
+		XXX Commented out because I need the log level here to determine
+		if i should or shouldn't generate this message
+	*/
+	/*
+		switch msg.Type {
+		case wire.MsgPeersTy:
+			ret += fmt.Sprintf("(%d entries)", msg.Data.Len())
+		case wire.MsgBlockTy:
+			b1, b2 := chain.NewBlockFromRlpValue(msg.Data.Get(0)), ethchain.NewBlockFromRlpValue(msg.Data.Get(msg.Data.Len()-1))
+			ret += fmt.Sprintf("(%d entries) %x - %x", msg.Data.Len(), b1.Hash()[0:4], b2.Hash()[0:4])
+		case wire.MsgBlockHashesTy:
+			h1, h2 := msg.Data.Get(0).Bytes(), msg.Data.Get(msg.Data.Len()-1).Bytes()
+			ret += fmt.Sprintf("(%d entries) %x - %x", msg.Data.Len(), h1, h2)
+		}
+	*/
+
+	return
+}
+
+// Inbound handler. Inbound messages are received here and passed to the appropriate methods
+func (p *Peer) HandleInbound() {
+	for atomic.LoadInt32(&p.disconnect) == 0 {
+
+		// HMM?
+		time.Sleep(50 * time.Millisecond)
+		// Wait for a message from the peer
+		msgs, err := wire.ReadMessages(p.conn)
+		if err != nil {
+			peerlogger.Debugln(err)
+		}
+		for _, msg := range msgs {
+			peerlogger.DebugDetailf("(%v) => %v\n", p.conn.RemoteAddr(), formatMessage(msg))
+
+			switch msg.Type {
+			case wire.MsgHandshakeTy:
+				// Version message
+				p.handleHandshake(msg)
+
+				//if p.caps.IsCap(CapPeerDiscTy) {
+				p.QueueMessage(wire.NewMessage(wire.MsgGetPeersTy, ""))
+				//}
+
+			case wire.MsgDiscTy:
+				p.Stop()
+				peerlogger.Infoln("Disconnect peer: ", DiscReason(msg.Data.Get(0).Uint()))
+			case wire.MsgPingTy:
+				// Respond back with pong
+				p.QueueMessage(wire.NewMessage(wire.MsgPongTy, ""))
+			case wire.MsgPongTy:
+				// If we received a pong back from a peer we set the
+				// last pong so the peer handler knows this peer is still
+				// active.
+				p.lastPong = time.Now().Unix()
+				p.pingTime = time.Since(p.pingStartTime)
+			case wire.MsgTxTy:
+				// If the message was a transaction queue the transaction
+				// in the TxPool where it will undergo validation and
+				// processing when a new block is found
+				for i := 0; i < msg.Data.Len(); i++ {
+					tx := types.NewTransactionFromValue(msg.Data.Get(i))
+					err := p.ethereum.TxPool().Add(tx)
+					if err != nil {
+						peerlogger.Infoln(err)
+					} else {
+						peerlogger.Infof("tx OK (%x)\n", tx.Hash()[0:4])
+					}
+				}
+			case wire.MsgGetPeersTy:
+				// Peer asked for list of connected peers
+				//p.pushPeers()
+			case wire.MsgPeersTy:
+				// Received a list of peers (probably because MsgGetPeersTy was send)
+				data := msg.Data
+				// Create new list of possible peers for the ethereum to process
+				peers := make([]string, data.Len())
+				// Parse each possible peer
+				for i := 0; i < data.Len(); i++ {
+					value := data.Get(i)
+					peers[i] = unpackAddr(value.Get(0), value.Get(1).Uint())
+				}
+
+				// Connect to the list of peers
+				p.ethereum.ProcessPeerList(peers)
+
+			case wire.MsgStatusTy:
+				// Handle peer's status msg
+				p.handleStatus(msg)
+			}
+
+			// TMP
+			if p.statusKnown {
+				switch msg.Type {
+
+				case wire.MsgGetBlockHashesTy:
+					if msg.Data.Len() < 2 {
+						peerlogger.Debugln("err: argument length invalid ", msg.Data.Len())
+					}
+
+					hash := msg.Data.Get(0).Bytes()
+					amount := msg.Data.Get(1).Uint()
+
+					hashes := p.ethereum.ChainManager().GetChainHashesFromHash(hash, amount)
+
+					p.QueueMessage(wire.NewMessage(wire.MsgBlockHashesTy, ethutil.ByteSliceToInterface(hashes)))
+
+				case wire.MsgGetBlocksTy:
+					// Limit to max 300 blocks
+					max := int(math.Min(float64(msg.Data.Len()), 300.0))
+					var blocks []interface{}
+
+					for i := 0; i < max; i++ {
+						hash := msg.Data.Get(i).Bytes()
+						block := p.ethereum.ChainManager().GetBlock(hash)
+						if block != nil {
+							blocks = append(blocks, block.Value().Raw())
+						}
+					}
+
+					p.QueueMessage(wire.NewMessage(wire.MsgBlockTy, blocks))
+
+				case wire.MsgBlockHashesTy:
+					p.catchingUp = true
+
+					blockPool := p.ethereum.blockPool
+
+					foundCommonHash := false
+					p.lastHashAt = time.Now()
+
+					it := msg.Data.NewIterator()
+					for it.Next() {
+						hash := it.Value().Bytes()
+						p.lastReceivedHash = hash
+
+						if blockPool.HasCommonHash(hash) {
+							foundCommonHash = true
+
+							break
+						}
+
+						blockPool.AddHash(hash, p)
+					}
+
+					if !foundCommonHash {
+						p.FetchHashes()
+					} else {
+						peerlogger.Infof("Found common hash (%x...)\n", p.lastReceivedHash[0:4])
+						p.doneFetchingHashes = true
+					}
+
+				case wire.MsgBlockTy:
+					p.catchingUp = true
+
+					blockPool := p.ethereum.blockPool
+
+					it := msg.Data.NewIterator()
+					for it.Next() {
+						block := types.NewBlockFromRlpValue(it.Value())
+						blockPool.Add(block, p)
+
+						p.lastBlockReceived = time.Now()
+					}
+				case wire.MsgNewBlockTy:
+					var (
+						blockPool = p.ethereum.blockPool
+						block     = types.NewBlockFromRlpValue(msg.Data.Get(0))
+						td        = msg.Data.Get(1).BigInt()
+					)
+
+					if td.Cmp(blockPool.td) > 0 {
+						p.ethereum.blockPool.AddNew(block, p)
+					}
+				}
+
+			}
+		}
+	}
+
+	p.Stop()
+}
+
+func (self *Peer) FetchBlocks(hashes [][]byte) {
+	if len(hashes) > 0 {
+		peerlogger.Debugf("Fetching blocks (%d)\n", len(hashes))
+
+		self.QueueMessage(wire.NewMessage(wire.MsgGetBlocksTy, ethutil.ByteSliceToInterface(hashes)))
+	}
+}
+
+func (self *Peer) FetchHashes() bool {
+	blockPool := self.ethereum.blockPool
+
+	return blockPool.FetchHashes(self)
+}
+
+func (self *Peer) FetchingHashes() bool {
+	return !self.doneFetchingHashes
+}
+
+// General update method
+func (self *Peer) update() {
+	serviceTimer := time.NewTicker(100 * time.Millisecond)
+
+out:
+	for {
+		select {
+		case <-serviceTimer.C:
+			if self.IsCap("eth") {
+				var (
+					sinceBlock = time.Since(self.lastBlockReceived)
+				)
+
+				if sinceBlock > 5*time.Second {
+					self.catchingUp = false
+				}
+			}
+		case <-self.quit:
+			break out
+		}
+	}
+
+	serviceTimer.Stop()
+}
+
+func (p *Peer) Start() {
+	peerHost, peerPort, _ := net.SplitHostPort(p.conn.LocalAddr().String())
+	servHost, servPort, _ := net.SplitHostPort(p.conn.RemoteAddr().String())
+
+	if p.inbound {
+		p.host, p.port = packAddr(peerHost, peerPort)
+	} else {
+		p.host, p.port = packAddr(servHost, servPort)
+	}
+
+	err := p.pushHandshake()
+	if err != nil {
+		peerlogger.Debugln("Peer can't send outbound version ack", err)
+
+		p.Stop()
+
+		return
+	}
+
+	go p.HandleOutbound()
+	// Run the inbound handler in a new goroutine
+	go p.HandleInbound()
+	// Run the general update handler
+	go p.update()
+
+	// Wait a few seconds for startup and then ask for an initial ping
+	time.Sleep(2 * time.Second)
+	p.writeMessage(wire.NewMessage(wire.MsgPingTy, ""))
+	p.pingStartTime = time.Now()
+
+}
+
+func (p *Peer) Stop() {
+	p.StopWithReason(DiscRequested)
+}
+
+func (p *Peer) StopWithReason(reason DiscReason) {
+	if atomic.AddInt32(&p.disconnect, 1) != 1 {
+		return
+	}
+
+	// Pre-emptively remove the peer; don't wait for reaping. We already know it's dead if we are here
+	p.ethereum.RemovePeer(p)
+
+	close(p.quit)
+	if atomic.LoadInt32(&p.connected) != 0 {
+		p.writeMessage(wire.NewMessage(wire.MsgDiscTy, reason))
+		p.conn.Close()
+	}
+}
+
+func (p *Peer) peersMessage() *wire.Msg {
+	outPeers := make([]interface{}, len(p.ethereum.InOutPeers()))
+	// Serialise each peer
+	for i, peer := range p.ethereum.InOutPeers() {
+		// Don't return localhost as valid peer
+		if !net.ParseIP(peer.conn.RemoteAddr().String()).IsLoopback() {
+			outPeers[i] = peer.RlpData()
+		}
+	}
+
+	// Return the message to the peer with the known list of connected clients
+	return wire.NewMessage(wire.MsgPeersTy, outPeers)
+}
+
+// Pushes the list of outbound peers to the client when requested
+func (p *Peer) pushPeers() {
+	p.QueueMessage(p.peersMessage())
+}
+
+func (self *Peer) pushStatus() {
+	msg := wire.NewMessage(wire.MsgStatusTy, []interface{}{
+		uint32(ProtocolVersion),
+		uint32(NetVersion),
+		self.ethereum.ChainManager().Td(),
+		self.ethereum.ChainManager().CurrentBlock().Hash(),
+		self.ethereum.ChainManager().Genesis().Hash(),
+	})
+
+	self.QueueMessage(msg)
+}
+
+func (self *Peer) handleStatus(msg *wire.Msg) {
+	c := msg.Data
+
+	var (
+		//protoVersion = c.Get(0).Uint()
+		netVersion = c.Get(1).Uint()
+		td         = c.Get(2).BigInt()
+		bestHash   = c.Get(3).Bytes()
+		genesis    = c.Get(4).Bytes()
+	)
+
+	if bytes.Compare(self.ethereum.ChainManager().Genesis().Hash(), genesis) != 0 {
+		loggerger.Warnf("Invalid genisis hash %x. Disabling [eth]\n", genesis)
+		return
+	}
+
+	if netVersion != NetVersion {
+		loggerger.Warnf("Invalid network version %d. Disabling [eth]\n", netVersion)
+		return
+	}
+
+	/*
+		if protoVersion != ProtocolVersion {
+			loggerger.Warnf("Invalid protocol version %d. Disabling [eth]\n", protoVersion)
+			return
+		}
+	*/
+
+	// Get the td and last hash
+	self.td = td
+	self.bestHash = bestHash
+	self.lastReceivedHash = bestHash
+
+	self.statusKnown = true
+
+	// Compare the total TD with the blockchain TD. If remote is higher
+	// fetch hashes from highest TD node.
+	self.FetchHashes()
+
+	loggerger.Infof("Peer is [eth] capable. (TD = %v ~ %x)", self.td, self.bestHash)
+
+}
+
+func (p *Peer) pushHandshake() error {
+	pubkey := p.ethereum.KeyManager().PublicKey()
+	msg := wire.NewMessage(wire.MsgHandshakeTy, []interface{}{
+		P2PVersion, []byte(p.version), []interface{}{[]interface{}{"eth", ProtocolVersion}}, p.port, pubkey[1:],
+	})
+
+	p.QueueMessage(msg)
+
+	return nil
+}
+
+func (p *Peer) handleHandshake(msg *wire.Msg) {
+	c := msg.Data
+
+	var (
+		p2pVersion = c.Get(0).Uint()
+		clientId   = c.Get(1).Str()
+		caps       = c.Get(2)
+		port       = c.Get(3).Uint()
+		pub        = c.Get(4).Bytes()
+	)
+
+	// Check correctness of p2p protocol version
+	if p2pVersion != P2PVersion {
+		peerlogger.Debugf("Invalid P2P version. Require protocol %d, received %d\n", P2PVersion, p2pVersion)
+		p.Stop()
+		return
+	}
+
+	// Handle the pub key (validation, uniqueness)
+	if len(pub) == 0 {
+		peerlogger.Warnln("Pubkey required, not supplied in handshake.")
+		p.Stop()
+		return
+	}
+
+	// Self connect detection
+	pubkey := p.ethereum.KeyManager().PublicKey()
+	if bytes.Compare(pubkey[1:], pub) == 0 {
+		p.Stop()
+
+		return
+	}
+
+	// Check for blacklisting
+	for _, pk := range p.ethereum.blacklist {
+		if bytes.Compare(pk, pub) == 0 {
+			peerlogger.Debugf("Blacklisted peer tried to connect (%x...)\n", pubkey[0:4])
+			p.StopWithReason(DiscBadPeer)
+
+			return
+		}
+	}
+
+	usedPub := 0
+	// This peer is already added to the peerlist so we expect to find a double pubkey at least once
+	eachPeer(p.ethereum.Peers(), func(peer *Peer, e *list.Element) {
+		if bytes.Compare(pub, peer.pubkey) == 0 {
+			usedPub++
+		}
+	})
+
+	if usedPub > 0 {
+		peerlogger.Debugf("Pubkey %x found more then once. Already connected to client.", p.pubkey)
+		p.Stop()
+		return
+	}
+	p.pubkey = pub
+
+	// If this is an inbound connection send an ack back
+	if p.inbound {
+		p.port = uint16(port)
+	}
+
+	p.SetVersion(clientId)
+
+	p.versionKnown = true
+
+	p.ethereum.PushPeer(p)
+	p.ethereum.eventMux.Post(PeerListEvent{p.ethereum.Peers()})
+
+	p.protocolCaps = caps
+
+	it := caps.NewIterator()
+	var capsStrs []string
+	for it.Next() {
+		cap := it.Value().Get(0).Str()
+		ver := it.Value().Get(1).Uint()
+		switch cap {
+		case "eth":
+			if ver != ProtocolVersion {
+				loggerger.Warnf("Invalid protocol version %d. Disabling [eth]\n", ver)
+				continue
+			}
+			p.pushStatus()
+		}
+
+		capsStrs = append(capsStrs, fmt.Sprintf("%s/%d", cap, ver))
+	}
+
+	peerlogger.Infof("Added peer (%s) %d / %d (%v)\n", p.conn.RemoteAddr(), p.ethereum.Peers().Len(), p.ethereum.MaxPeers, capsStrs)
+
+	peerlogger.Debugln(p)
+}
+
+func (self *Peer) IsCap(cap string) bool {
+	capsIt := self.protocolCaps.NewIterator()
+	for capsIt.Next() {
+		if capsIt.Value().Str() == cap {
+			return true
+		}
+	}
+
+	return false
+}
+
+func (self *Peer) Caps() *ethutil.Value {
+	return self.protocolCaps
+}
+
+func (p *Peer) String() string {
+	var strBoundType string
+	if p.inbound {
+		strBoundType = "inbound"
+	} else {
+		strBoundType = "outbound"
+	}
+	var strConnectType string
+	if atomic.LoadInt32(&p.disconnect) == 0 {
+		strConnectType = "connected"
+	} else {
+		strConnectType = "disconnected"
+	}
+
+	return fmt.Sprintf("[%s] (%s) %v %s", strConnectType, strBoundType, p.conn.RemoteAddr(), p.version)
+
+}
+
+func (p *Peer) RlpData() []interface{} {
+	return []interface{}{p.host, p.port, p.pubkey}
+}
+
+func packAddr(address, _port string) (host []byte, port uint16) {
+	p, _ := strconv.Atoi(_port)
+	port = uint16(p)
+
+	h := net.ParseIP(address)
+	if ip := h.To4(); ip != nil {
+		host = []byte(ip)
+	} else {
+		host = []byte(h)
+	}
+
+	return
+}
+
+func unpackAddr(value *ethutil.Value, p uint64) string {
+	host, _ := net.IP(value.Bytes()).MarshalText()
+	prt := strconv.Itoa(int(p))
+
+	return net.JoinHostPort(string(host), prt)
+}
diff --git a/pow/ar/block.go b/pow/ar/block.go
new file mode 100644
index 000000000..2124b53b4
--- /dev/null
+++ b/pow/ar/block.go
@@ -0,0 +1,12 @@
+package ar
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/trie"
+)
+
+type Block interface {
+	Trie() *trie.Trie
+	Diff() *big.Int
+}
diff --git a/pow/ar/ops.go b/pow/ar/ops.go
new file mode 100644
index 000000000..3a099be08
--- /dev/null
+++ b/pow/ar/ops.go
@@ -0,0 +1,54 @@
+package ar
+
+import "math/big"
+
+const lenops int64 = 9
+
+type OpsFunc func(a, b *big.Int) *big.Int
+
+var ops [lenops]OpsFunc
+
+func init() {
+	ops[0] = Add
+	ops[1] = Mul
+	ops[2] = Mod
+	ops[3] = Xor
+	ops[4] = And
+	ops[5] = Or
+	ops[6] = Sub1
+	ops[7] = XorSub
+	ops[8] = Rsh
+}
+
+func Add(x, y *big.Int) *big.Int {
+	return new(big.Int).Add(x, y)
+}
+func Mul(x, y *big.Int) *big.Int {
+	return new(big.Int).Mul(x, y)
+}
+func Mod(x, y *big.Int) *big.Int {
+	return new(big.Int).Mod(x, y)
+}
+func Xor(x, y *big.Int) *big.Int {
+	return new(big.Int).Xor(x, y)
+}
+func And(x, y *big.Int) *big.Int {
+	return new(big.Int).And(x, y)
+}
+func Or(x, y *big.Int) *big.Int {
+	return new(big.Int).Or(x, y)
+}
+func Sub1(x, y *big.Int) *big.Int {
+	a := big.NewInt(-1)
+	a.Sub(a, x)
+
+	return a
+}
+func XorSub(x, y *big.Int) *big.Int {
+	t := Sub1(x, nil)
+
+	return t.Xor(t, y)
+}
+func Rsh(x, y *big.Int) *big.Int {
+	return new(big.Int).Rsh(x, uint(y.Uint64()%64))
+}
diff --git a/pow/ar/pow.go b/pow/ar/pow.go
new file mode 100644
index 000000000..8991a674b
--- /dev/null
+++ b/pow/ar/pow.go
@@ -0,0 +1,122 @@
+package ar
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+type Entry struct {
+	op   OpsFunc
+	i, j *big.Int
+}
+
+type Tape struct {
+	tape  []Entry
+	block Block
+}
+
+func NewTape(block Block) *Tape {
+	return &Tape{nil, block}
+}
+
+func (self *Tape) gen(w, h int64, gen NumberGenerator) {
+	self.tape = nil
+
+	for v := int64(0); v < h; v++ {
+		op := ops[gen.rand64(lenops).Int64()]
+		r := gen.rand64(100).Uint64()
+
+		var j *big.Int
+		if r < 20 && v > 20 {
+			j = self.tape[len(self.tape)-1].i
+		} else {
+			j = gen.rand64(w)
+		}
+
+		i := gen.rand64(w)
+		self.tape = append(self.tape, Entry{op, i, j})
+	}
+}
+
+func (self *Tape) runTape(w, h int64, gen NumberGenerator) *big.Int {
+	var mem []*big.Int
+	for i := int64(0); i < w; i++ {
+		mem = append(mem, gen.rand(ethutil.BigPow(2, 64)))
+	}
+
+	set := func(i, j int) Entry {
+		entry := self.tape[i*100+j]
+		mem[entry.i.Uint64()] = entry.op(entry.i, entry.j)
+
+		return entry
+	}
+
+	dir := true
+	for i := 0; i < int(h)/100; i++ {
+		var entry Entry
+		if dir {
+			for j := 0; j < 100; j++ {
+				entry = set(i, j)
+			}
+		} else {
+			for j := 99; i >= 0; j-- {
+				entry = set(i, j)
+			}
+		}
+
+		t := mem[entry.i.Uint64()]
+		if big.NewInt(2).Cmp(new(big.Int).Mod(t, big.NewInt(37))) < 0 {
+			dir = !dir
+		}
+	}
+
+	return Sha3(mem)
+}
+
+func (self *Tape) Verify(header, nonce []byte) bool {
+	n := ethutil.BigD(nonce)
+
+	var w int64 = 10000
+	var h int64 = 150000
+	gen := Rnd(Sha3([]interface{}{header, new(big.Int).Div(n, big.NewInt(1000))}))
+	self.gen(w, h, gen)
+
+	gen = Rnd(Sha3([]interface{}{header, new(big.Int).Mod(n, big.NewInt(1000))}))
+	hash := self.runTape(w, h, gen)
+
+	it := self.block.Trie().Iterator()
+	next := it.Next(string(new(big.Int).Mod(hash, ethutil.BigPow(2, 160)).Bytes()))
+
+	req := ethutil.BigPow(2, 256)
+	req.Div(req, self.block.Diff())
+	return Sha3([]interface{}{hash, next}).Cmp(req) < 0
+}
+
+func (self *Tape) Run(header []byte) []byte {
+	nonce := big.NewInt(0)
+	var w int64 = 10000
+	var h int64 = 150000
+
+	req := ethutil.BigPow(2, 256)
+	req.Div(req, self.block.Diff())
+
+	for {
+		if new(big.Int).Mod(nonce, b(1000)).Cmp(b(0)) == 0 {
+			gen := Rnd(Sha3([]interface{}{header, new(big.Int).Div(nonce, big.NewInt(1000))}))
+			self.gen(w, h, gen)
+		}
+
+		gen := Rnd(Sha3([]interface{}{header, new(big.Int).Mod(nonce, big.NewInt(1000))}))
+		hash := self.runTape(w, h, gen)
+
+		it := self.block.Trie().Iterator()
+		next := it.Next(string(new(big.Int).Mod(hash, ethutil.BigPow(2, 160)).Bytes()))
+
+		if Sha3([]interface{}{hash, next}).Cmp(req) < 0 {
+			return nonce.Bytes()
+		} else {
+			nonce.Add(nonce, ethutil.Big1)
+		}
+	}
+}
diff --git a/pow/ar/pow_test.go b/pow/ar/pow_test.go
new file mode 100644
index 000000000..b1ebf9281
--- /dev/null
+++ b/pow/ar/pow_test.go
@@ -0,0 +1,47 @@
+package ar
+
+import (
+	"fmt"
+	"math/big"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/trie"
+)
+
+type TestBlock struct {
+	trie *trie.Trie
+}
+
+func NewTestBlock() *TestBlock {
+	db, _ := ethdb.NewMemDatabase()
+	return &TestBlock{
+		trie: trie.New(db, ""),
+	}
+}
+
+func (self *TestBlock) Diff() *big.Int {
+	return b(10)
+}
+
+func (self *TestBlock) Trie() *trie.Trie {
+	return self.trie
+}
+
+func (self *TestBlock) Hash() []byte {
+	a := make([]byte, 32)
+	a[0] = 10
+	a[1] = 2
+	return a
+}
+
+func TestPow(t *testing.T) {
+	entry := make([]byte, 32)
+	entry[0] = 255
+
+	block := NewTestBlock()
+
+	pow := NewTape(block)
+	nonce := pow.Run(block.Hash())
+	fmt.Println("Found nonce", nonce)
+}
diff --git a/pow/ar/rnd.go b/pow/ar/rnd.go
new file mode 100644
index 000000000..c62f4e062
--- /dev/null
+++ b/pow/ar/rnd.go
@@ -0,0 +1,66 @@
+package ar
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+var b = big.NewInt
+
+type Node interface {
+	Big() *big.Int
+}
+
+type ByteNode []byte
+
+func (self ByteNode) Big() *big.Int {
+	return ethutil.BigD(ethutil.Encode([]byte(self)))
+}
+
+func Sha3(v interface{}) *big.Int {
+	if b, ok := v.(*big.Int); ok {
+		return ethutil.BigD(crypto.Sha3(b.Bytes()))
+	} else if b, ok := v.([]interface{}); ok {
+		return ethutil.BigD(crypto.Sha3(ethutil.Encode(b)))
+	} else if s, ok := v.([]*big.Int); ok {
+		v := make([]interface{}, len(s))
+		for i, b := range s {
+			v[i] = b
+		}
+
+		return ethutil.BigD(crypto.Sha3(ethutil.Encode(v)))
+	}
+
+	return nil
+}
+
+type NumberGenerator interface {
+	rand(r *big.Int) *big.Int
+	rand64(r int64) *big.Int
+}
+
+type rnd struct {
+	seed *big.Int
+}
+
+func Rnd(s *big.Int) rnd {
+	return rnd{s}
+}
+
+func (self rnd) rand(r *big.Int) *big.Int {
+	o := b(0).Mod(self.seed, r)
+
+	self.seed.Div(self.seed, r)
+
+	if self.seed.Cmp(ethutil.BigPow(2, 64)) < 0 {
+		self.seed = Sha3(self.seed)
+	}
+
+	return o
+}
+
+func (self rnd) rand64(r int64) *big.Int {
+	return self.rand(b(r))
+}
diff --git a/pow/block.go b/pow/block.go
new file mode 100644
index 000000000..4759e19fb
--- /dev/null
+++ b/pow/block.go
@@ -0,0 +1,9 @@
+package pow
+
+import "math/big"
+
+type Block interface {
+	Diff() *big.Int
+	HashNoNonce() []byte
+	N() []byte
+}
diff --git a/pow/ezp/pow.go b/pow/ezp/pow.go
new file mode 100644
index 000000000..bfe3ea098
--- /dev/null
+++ b/pow/ezp/pow.go
@@ -0,0 +1,89 @@
+package ezp
+
+import (
+	"math/big"
+	"math/rand"
+	"time"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/pow"
+	"github.com/obscuren/sha3"
+)
+
+var powlogger = logger.NewLogger("POW")
+
+type EasyPow struct {
+	hash     *big.Int
+	HashRate int64
+	turbo    bool
+}
+
+func New() *EasyPow {
+	return &EasyPow{turbo: true}
+}
+
+func (pow *EasyPow) GetHashrate() int64 {
+	return pow.HashRate
+}
+
+func (pow *EasyPow) Turbo(on bool) {
+	pow.turbo = on
+}
+
+func (pow *EasyPow) Search(block pow.Block, stop <-chan struct{}) []byte {
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
+	hash := block.HashNoNonce()
+	diff := block.Diff()
+	i := int64(0)
+	start := time.Now().UnixNano()
+	t := time.Now()
+
+	for {
+		select {
+		case <-stop:
+			powlogger.Infoln("Breaking from mining")
+			pow.HashRate = 0
+			return nil
+		default:
+			i++
+
+			if time.Since(t) > (1 * time.Second) {
+				elapsed := time.Now().UnixNano() - start
+				hashes := ((float64(1e9) / float64(elapsed)) * float64(i)) / 1000
+				pow.HashRate = int64(hashes)
+				powlogger.Infoln("Hashing @", pow.HashRate, "khash")
+
+				t = time.Now()
+			}
+
+			sha := crypto.Sha3(big.NewInt(r.Int63()).Bytes())
+			if pow.verify(hash, diff, sha) {
+				return sha
+			}
+		}
+
+		if !pow.turbo {
+			time.Sleep(20 * time.Microsecond)
+		}
+	}
+
+	return nil
+}
+
+func (pow *EasyPow) verify(hash []byte, diff *big.Int, nonce []byte) bool {
+	sha := sha3.NewKeccak256()
+
+	d := append(hash, nonce...)
+	sha.Write(d)
+
+	verification := new(big.Int).Div(ethutil.BigPow(2, 256), diff)
+	res := ethutil.U256(ethutil.BigD(sha.Sum(nil)))
+
+	return res.Cmp(verification) <= 0
+}
+
+func (pow *EasyPow) Verify(block pow.Block) bool {
+	return pow.verify(block.HashNoNonce(), block.Diff(), block.N())
+}
diff --git a/pow/pow.go b/pow/pow.go
new file mode 100644
index 000000000..c94ee40ba
--- /dev/null
+++ b/pow/pow.go
@@ -0,0 +1,8 @@
+package pow
+
+type PoW interface {
+	Search(block Block, stop <-chan struct{}) []byte
+	Verify(block Block) bool
+	GetHashrate() int64
+	Turbo(bool)
+}
diff --git a/profile.cov b/profile.cov
new file mode 100644
index 000000000..e92cd379f
--- /dev/null
+++ b/profile.cov
@@ -0,0 +1,3038 @@
+mode: count
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diff --git a/ptrie/cache.go b/ptrie/cache.go
new file mode 100644
index 000000000..721dc4cf6
--- /dev/null
+++ b/ptrie/cache.go
@@ -0,0 +1,42 @@
+package ptrie
+
+type Backend interface {
+	Get([]byte) ([]byte, error)
+	Put([]byte, []byte)
+}
+
+type Cache struct {
+	store   map[string][]byte
+	backend Backend
+}
+
+func NewCache(backend Backend) *Cache {
+	return &Cache{make(map[string][]byte), backend}
+}
+
+func (self *Cache) Get(key []byte) []byte {
+	data := self.store[string(key)]
+	if data == nil {
+		data, _ = self.backend.Get(key)
+	}
+
+	return data
+}
+
+func (self *Cache) Put(key []byte, data []byte) {
+	self.store[string(key)] = data
+}
+
+func (self *Cache) Flush() {
+	for k, v := range self.store {
+		self.backend.Put([]byte(k), v)
+	}
+
+	// This will eventually grow too large. We'd could
+	// do a make limit on storage and push out not-so-popular nodes.
+	//self.Reset()
+}
+
+func (self *Cache) Reset() {
+	self.store = make(map[string][]byte)
+}
diff --git a/ptrie/fullnode.go b/ptrie/fullnode.go
new file mode 100644
index 000000000..7a7f7d22d
--- /dev/null
+++ b/ptrie/fullnode.go
@@ -0,0 +1,69 @@
+package ptrie
+
+type FullNode struct {
+	trie  *Trie
+	nodes [17]Node
+}
+
+func NewFullNode(t *Trie) *FullNode {
+	return &FullNode{trie: t}
+}
+
+func (self *FullNode) Dirty() bool { return true }
+func (self *FullNode) Value() Node {
+	self.nodes[16] = self.trie.trans(self.nodes[16])
+	return self.nodes[16]
+}
+func (self *FullNode) Branches() []Node {
+	return self.nodes[:16]
+}
+
+func (self *FullNode) Copy() Node {
+	nnode := NewFullNode(self.trie)
+	for i, node := range self.nodes {
+		nnode.nodes[i] = node
+	}
+
+	return nnode
+}
+
+// Returns the length of non-nil nodes
+func (self *FullNode) Len() (amount int) {
+	for _, node := range self.nodes {
+		if node != nil {
+			amount++
+		}
+	}
+
+	return
+}
+
+func (self *FullNode) Hash() interface{} {
+	return self.trie.store(self)
+}
+
+func (self *FullNode) RlpData() interface{} {
+	t := make([]interface{}, 17)
+	for i, node := range self.nodes {
+		if node != nil {
+			t[i] = node.Hash()
+		} else {
+			t[i] = ""
+		}
+	}
+
+	return t
+}
+
+func (self *FullNode) set(k byte, value Node) {
+	self.nodes[int(k)] = value
+}
+
+func (self *FullNode) branch(i byte) Node {
+	if self.nodes[int(i)] != nil {
+		self.nodes[int(i)] = self.trie.trans(self.nodes[int(i)])
+
+		return self.nodes[int(i)]
+	}
+	return nil
+}
diff --git a/ptrie/hashnode.go b/ptrie/hashnode.go
new file mode 100644
index 000000000..4c17569d7
--- /dev/null
+++ b/ptrie/hashnode.go
@@ -0,0 +1,22 @@
+package ptrie
+
+type HashNode struct {
+	key []byte
+}
+
+func NewHash(key []byte) *HashNode {
+	return &HashNode{key}
+}
+
+func (self *HashNode) RlpData() interface{} {
+	return self.key
+}
+
+func (self *HashNode) Hash() interface{} {
+	return self.key
+}
+
+// These methods will never be called but we have to satisfy Node interface
+func (self *HashNode) Value() Node { return nil }
+func (self *HashNode) Dirty() bool { return true }
+func (self *HashNode) Copy() Node  { return self }
diff --git a/ptrie/iterator.go b/ptrie/iterator.go
new file mode 100644
index 000000000..5714bdbc8
--- /dev/null
+++ b/ptrie/iterator.go
@@ -0,0 +1,115 @@
+package ptrie
+
+import (
+	"bytes"
+
+	"github.com/ethereum/go-ethereum/trie"
+)
+
+type Iterator struct {
+	trie *Trie
+
+	Key   []byte
+	Value []byte
+}
+
+func NewIterator(trie *Trie) *Iterator {
+	return &Iterator{trie: trie, Key: []byte{0}}
+}
+
+func (self *Iterator) Next() bool {
+	self.trie.mu.Lock()
+	defer self.trie.mu.Unlock()
+
+	key := trie.RemTerm(trie.CompactHexDecode(string(self.Key)))
+	k := self.next(self.trie.root, key)
+
+	self.Key = []byte(trie.DecodeCompact(k))
+
+	return len(k) > 0
+
+}
+
+func (self *Iterator) next(node Node, key []byte) []byte {
+	if node == nil {
+		return nil
+	}
+
+	switch node := node.(type) {
+	case *FullNode:
+		if len(key) > 0 {
+			k := self.next(node.branch(key[0]), key[1:])
+			if k != nil {
+				return append([]byte{key[0]}, k...)
+			}
+		}
+
+		var r byte
+		if len(key) > 0 {
+			r = key[0] + 1
+		}
+
+		for i := r; i < 16; i++ {
+			k := self.key(node.branch(byte(i)))
+			if k != nil {
+				return append([]byte{i}, k...)
+			}
+		}
+
+	case *ShortNode:
+		k := trie.RemTerm(node.Key())
+		if vnode, ok := node.Value().(*ValueNode); ok {
+			if bytes.Compare([]byte(k), key) > 0 {
+				self.Value = vnode.Val()
+				return k
+			}
+		} else {
+			cnode := node.Value()
+
+			var ret []byte
+			skey := key[len(k):]
+			if trie.BeginsWith(key, k) {
+				ret = self.next(cnode, skey)
+			} else if bytes.Compare(k, key[:len(k)]) > 0 {
+				ret = self.key(node)
+			}
+
+			if ret != nil {
+				return append(k, ret...)
+			}
+		}
+	}
+
+	return nil
+}
+
+func (self *Iterator) key(node Node) []byte {
+	switch node := node.(type) {
+	case *ShortNode:
+		// Leaf node
+		if vnode, ok := node.Value().(*ValueNode); ok {
+			k := trie.RemTerm(node.Key())
+			self.Value = vnode.Val()
+
+			return k
+		} else {
+			k := trie.RemTerm(node.Key())
+			return append(k, self.key(node.Value())...)
+		}
+	case *FullNode:
+		if node.Value() != nil {
+			self.Value = node.Value().(*ValueNode).Val()
+
+			return []byte{16}
+		}
+
+		for i := 0; i < 16; i++ {
+			k := self.key(node.branch(byte(i)))
+			if k != nil {
+				return append([]byte{byte(i)}, k...)
+			}
+		}
+	}
+
+	return nil
+}
diff --git a/ptrie/iterator_test.go b/ptrie/iterator_test.go
new file mode 100644
index 000000000..acfc03d63
--- /dev/null
+++ b/ptrie/iterator_test.go
@@ -0,0 +1,33 @@
+package ptrie
+
+import "testing"
+
+func TestIterator(t *testing.T) {
+	trie := NewEmpty()
+	vals := []struct{ k, v string }{
+		{"do", "verb"},
+		{"ether", "wookiedoo"},
+		{"horse", "stallion"},
+		{"shaman", "horse"},
+		{"doge", "coin"},
+		{"dog", "puppy"},
+		{"somethingveryoddindeedthis is", "myothernodedata"},
+	}
+	v := make(map[string]bool)
+	for _, val := range vals {
+		v[val.k] = false
+		trie.UpdateString(val.k, val.v)
+	}
+	trie.Commit()
+
+	it := trie.Iterator()
+	for it.Next() {
+		v[string(it.Key)] = true
+	}
+
+	for k, found := range v {
+		if !found {
+			t.Error("iterator didn't find", k)
+		}
+	}
+}
diff --git a/ptrie/node.go b/ptrie/node.go
new file mode 100644
index 000000000..2c85dbce7
--- /dev/null
+++ b/ptrie/node.go
@@ -0,0 +1,40 @@
+package ptrie
+
+import "fmt"
+
+var indices = []string{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f", "[17]"}
+
+type Node interface {
+	Value() Node
+	Copy() Node // All nodes, for now, return them self
+	Dirty() bool
+	fstring(string) string
+	Hash() interface{}
+	RlpData() interface{}
+}
+
+// Value node
+func (self *ValueNode) String() string            { return self.fstring("") }
+func (self *FullNode) String() string             { return self.fstring("") }
+func (self *ShortNode) String() string            { return self.fstring("") }
+func (self *ValueNode) fstring(ind string) string { return fmt.Sprintf("%s ", self.data) }
+func (self *HashNode) fstring(ind string) string  { return fmt.Sprintf("%x ", self.key) }
+
+// Full node
+func (self *FullNode) fstring(ind string) string {
+	resp := fmt.Sprintf("[\n%s  ", ind)
+	for i, node := range self.nodes {
+		if node == nil {
+			resp += fmt.Sprintf("%s: <nil> ", indices[i])
+		} else {
+			resp += fmt.Sprintf("%s: %v", indices[i], node.fstring(ind+"  "))
+		}
+	}
+
+	return resp + fmt.Sprintf("\n%s] ", ind)
+}
+
+// Short node
+func (self *ShortNode) fstring(ind string) string {
+	return fmt.Sprintf("[ %s: %v ] ", self.key, self.value.fstring(ind+"  "))
+}
diff --git a/ptrie/shortnode.go b/ptrie/shortnode.go
new file mode 100644
index 000000000..73ff2914b
--- /dev/null
+++ b/ptrie/shortnode.go
@@ -0,0 +1,31 @@
+package ptrie
+
+import "github.com/ethereum/go-ethereum/trie"
+
+type ShortNode struct {
+	trie  *Trie
+	key   []byte
+	value Node
+}
+
+func NewShortNode(t *Trie, key []byte, value Node) *ShortNode {
+	return &ShortNode{t, []byte(trie.CompactEncode(key)), value}
+}
+func (self *ShortNode) Value() Node {
+	self.value = self.trie.trans(self.value)
+
+	return self.value
+}
+func (self *ShortNode) Dirty() bool { return true }
+func (self *ShortNode) Copy() Node  { return NewShortNode(self.trie, self.key, self.value) }
+
+func (self *ShortNode) RlpData() interface{} {
+	return []interface{}{self.key, self.value.Hash()}
+}
+func (self *ShortNode) Hash() interface{} {
+	return self.trie.store(self)
+}
+
+func (self *ShortNode) Key() []byte {
+	return trie.CompactDecode(string(self.key))
+}
diff --git a/ptrie/trie.go b/ptrie/trie.go
new file mode 100644
index 000000000..9fe9ea52a
--- /dev/null
+++ b/ptrie/trie.go
@@ -0,0 +1,312 @@
+package ptrie
+
+import (
+	"bytes"
+	"container/list"
+	"fmt"
+	"sync"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/trie"
+)
+
+func ParanoiaCheck(t1 *Trie, backend Backend) (bool, *Trie) {
+	t2 := New(nil, backend)
+
+	it := t1.Iterator()
+	for it.Next() {
+		t2.Update(it.Key, it.Value)
+	}
+
+	return bytes.Compare(t2.Hash(), t1.Hash()) == 0, t2
+}
+
+type Trie struct {
+	mu       sync.Mutex
+	root     Node
+	roothash []byte
+	cache    *Cache
+
+	revisions *list.List
+}
+
+func New(root []byte, backend Backend) *Trie {
+	trie := &Trie{}
+	trie.revisions = list.New()
+	trie.roothash = root
+	trie.cache = NewCache(backend)
+
+	if root != nil {
+		value := ethutil.NewValueFromBytes(trie.cache.Get(root))
+		trie.root = trie.mknode(value)
+	}
+
+	return trie
+}
+
+func (self *Trie) Iterator() *Iterator {
+	return NewIterator(self)
+}
+
+// Legacy support
+func (self *Trie) Root() []byte { return self.Hash() }
+func (self *Trie) Hash() []byte {
+	var hash []byte
+	if self.root != nil {
+		//hash = self.root.Hash().([]byte)
+		t := self.root.Hash()
+		if byts, ok := t.([]byte); ok {
+			hash = byts
+		} else {
+			hash = crypto.Sha3(ethutil.Encode(self.root.RlpData()))
+		}
+	} else {
+		hash = crypto.Sha3(ethutil.Encode(""))
+	}
+
+	if !bytes.Equal(hash, self.roothash) {
+		self.revisions.PushBack(self.roothash)
+		self.roothash = hash
+	}
+
+	return hash
+}
+func (self *Trie) Commit() {
+	// Hash first
+	self.Hash()
+
+	self.cache.Flush()
+}
+
+// Reset should only be called if the trie has been hashed
+func (self *Trie) Reset() {
+	self.cache.Reset()
+
+	revision := self.revisions.Remove(self.revisions.Back()).([]byte)
+	self.roothash = revision
+	value := ethutil.NewValueFromBytes(self.cache.Get(self.roothash))
+	self.root = self.mknode(value)
+}
+
+func (self *Trie) UpdateString(key, value string) Node { return self.Update([]byte(key), []byte(value)) }
+func (self *Trie) Update(key, value []byte) Node {
+	self.mu.Lock()
+	defer self.mu.Unlock()
+
+	k := trie.CompactHexDecode(string(key))
+
+	if len(value) != 0 {
+		self.root = self.insert(self.root, k, &ValueNode{self, value})
+	} else {
+		self.root = self.delete(self.root, k)
+	}
+
+	return self.root
+}
+
+func (self *Trie) GetString(key string) []byte { return self.Get([]byte(key)) }
+func (self *Trie) Get(key []byte) []byte {
+	self.mu.Lock()
+	defer self.mu.Unlock()
+
+	k := trie.CompactHexDecode(string(key))
+
+	n := self.get(self.root, k)
+	if n != nil {
+		return n.(*ValueNode).Val()
+	}
+
+	return nil
+}
+
+func (self *Trie) DeleteString(key string) Node { return self.Delete([]byte(key)) }
+func (self *Trie) Delete(key []byte) Node {
+	self.mu.Lock()
+	defer self.mu.Unlock()
+
+	k := trie.CompactHexDecode(string(key))
+	self.root = self.delete(self.root, k)
+
+	return self.root
+}
+
+func (self *Trie) insert(node Node, key []byte, value Node) Node {
+	if len(key) == 0 {
+		return value
+	}
+
+	if node == nil {
+		return NewShortNode(self, key, value)
+	}
+
+	switch node := node.(type) {
+	case *ShortNode:
+		k := node.Key()
+		cnode := node.Value()
+		if bytes.Equal(k, key) {
+			return NewShortNode(self, key, value)
+		}
+
+		var n Node
+		matchlength := trie.MatchingNibbleLength(key, k)
+		if matchlength == len(k) {
+			n = self.insert(cnode, key[matchlength:], value)
+		} else {
+			pnode := self.insert(nil, k[matchlength+1:], cnode)
+			nnode := self.insert(nil, key[matchlength+1:], value)
+			fulln := NewFullNode(self)
+			fulln.set(k[matchlength], pnode)
+			fulln.set(key[matchlength], nnode)
+			n = fulln
+		}
+		if matchlength == 0 {
+			return n
+		}
+
+		return NewShortNode(self, key[:matchlength], n)
+
+	case *FullNode:
+		cpy := node.Copy().(*FullNode)
+		cpy.set(key[0], self.insert(node.branch(key[0]), key[1:], value))
+
+		return cpy
+
+	default:
+		panic("Invalid node")
+	}
+}
+
+func (self *Trie) get(node Node, key []byte) Node {
+	if len(key) == 0 {
+		return node
+	}
+
+	if node == nil {
+		return nil
+	}
+
+	switch node := node.(type) {
+	case *ShortNode:
+		k := node.Key()
+		cnode := node.Value()
+
+		if len(key) >= len(k) && bytes.Equal(k, key[:len(k)]) {
+			return self.get(cnode, key[len(k):])
+		}
+
+		return nil
+	case *FullNode:
+		return self.get(node.branch(key[0]), key[1:])
+	default:
+		panic(fmt.Sprintf("%T: invalid node: %v", node, node))
+	}
+}
+
+func (self *Trie) delete(node Node, key []byte) Node {
+	if len(key) == 0 {
+		return nil
+	}
+
+	switch node := node.(type) {
+	case *ShortNode:
+		k := node.Key()
+		cnode := node.Value()
+		if bytes.Equal(key, k) {
+			return nil
+		} else if bytes.Equal(key[:len(k)], k) {
+			child := self.delete(cnode, key[len(k):])
+
+			var n Node
+			switch child := child.(type) {
+			case *ShortNode:
+				nkey := append(k, child.Key()...)
+				n = NewShortNode(self, nkey, child.Value())
+			case *FullNode:
+				n = NewShortNode(self, node.key, child)
+			}
+
+			return n
+		} else {
+			return node
+		}
+
+	case *FullNode:
+		n := node.Copy().(*FullNode)
+		n.set(key[0], self.delete(n.branch(key[0]), key[1:]))
+
+		pos := -1
+		for i := 0; i < 17; i++ {
+			if n.branch(byte(i)) != nil {
+				if pos == -1 {
+					pos = i
+				} else {
+					pos = -2
+				}
+			}
+		}
+
+		var nnode Node
+		if pos == 16 {
+			nnode = NewShortNode(self, []byte{16}, n.branch(byte(pos)))
+		} else if pos >= 0 {
+			cnode := n.branch(byte(pos))
+			switch cnode := cnode.(type) {
+			case *ShortNode:
+				// Stitch keys
+				k := append([]byte{byte(pos)}, cnode.Key()...)
+				nnode = NewShortNode(self, k, cnode.Value())
+			case *FullNode:
+				nnode = NewShortNode(self, []byte{byte(pos)}, n.branch(byte(pos)))
+			}
+		} else {
+			nnode = n
+		}
+
+		return nnode
+
+	default:
+		panic("Invalid node")
+	}
+}
+
+// casting functions and cache storing
+func (self *Trie) mknode(value *ethutil.Value) Node {
+	l := value.Len()
+	switch l {
+	case 2:
+		return NewShortNode(self, trie.CompactDecode(string(value.Get(0).Bytes())), self.mknode(value.Get(1)))
+	case 17:
+		fnode := NewFullNode(self)
+		for i := 0; i < l; i++ {
+			fnode.set(byte(i), self.mknode(value.Get(i)))
+		}
+		return fnode
+	case 32:
+		return &HashNode{value.Bytes()}
+	default:
+		return &ValueNode{self, value.Bytes()}
+	}
+}
+
+func (self *Trie) trans(node Node) Node {
+	switch node := node.(type) {
+	case *HashNode:
+		value := ethutil.NewValueFromBytes(self.cache.Get(node.key))
+		return self.mknode(value)
+	default:
+		return node
+	}
+}
+
+func (self *Trie) store(node Node) interface{} {
+	data := ethutil.Encode(node)
+	if len(data) >= 32 {
+		key := crypto.Sha3(data)
+		self.cache.Put(key, data)
+
+		return key
+	}
+
+	return node.RlpData()
+}
diff --git a/ptrie/trie_test.go b/ptrie/trie_test.go
new file mode 100644
index 000000000..5b1c64140
--- /dev/null
+++ b/ptrie/trie_test.go
@@ -0,0 +1,259 @@
+package ptrie
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+type Db map[string][]byte
+
+func (self Db) Get(k []byte) ([]byte, error) { return self[string(k)], nil }
+func (self Db) Put(k, v []byte)              { self[string(k)] = v }
+
+// Used for testing
+func NewEmpty() *Trie {
+	return New(nil, make(Db))
+}
+
+func TestEmptyTrie(t *testing.T) {
+	trie := NewEmpty()
+	res := trie.Hash()
+	exp := crypto.Sha3(ethutil.Encode(""))
+	if !bytes.Equal(res, exp) {
+		t.Errorf("expected %x got %x", exp, res)
+	}
+}
+
+func TestInsert(t *testing.T) {
+	trie := NewEmpty()
+
+	trie.UpdateString("doe", "reindeer")
+	trie.UpdateString("dog", "puppy")
+	trie.UpdateString("dogglesworth", "cat")
+
+	exp := ethutil.Hex2Bytes("8aad789dff2f538bca5d8ea56e8abe10f4c7ba3a5dea95fea4cd6e7c3a1168d3")
+	root := trie.Hash()
+	if !bytes.Equal(root, exp) {
+		t.Errorf("exp %x got %x", exp, root)
+	}
+
+	trie = NewEmpty()
+	trie.UpdateString("A", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
+
+	exp = ethutil.Hex2Bytes("d23786fb4a010da3ce639d66d5e904a11dbc02746d1ce25029e53290cabf28ab")
+	root = trie.Hash()
+	if !bytes.Equal(root, exp) {
+		t.Errorf("exp %x got %x", exp, root)
+	}
+}
+
+func TestGet(t *testing.T) {
+	trie := NewEmpty()
+
+	trie.UpdateString("doe", "reindeer")
+	trie.UpdateString("dog", "puppy")
+	trie.UpdateString("dogglesworth", "cat")
+
+	res := trie.GetString("dog")
+	if !bytes.Equal(res, []byte("puppy")) {
+		t.Errorf("expected puppy got %x", res)
+	}
+
+	unknown := trie.GetString("unknown")
+	if unknown != nil {
+		t.Errorf("expected nil got %x", unknown)
+	}
+}
+
+func TestDelete(t *testing.T) {
+	trie := NewEmpty()
+
+	vals := []struct{ k, v string }{
+		{"do", "verb"},
+		{"ether", "wookiedoo"},
+		{"horse", "stallion"},
+		{"shaman", "horse"},
+		{"doge", "coin"},
+		{"ether", ""},
+		{"dog", "puppy"},
+		{"shaman", ""},
+	}
+	for _, val := range vals {
+		if val.v != "" {
+			trie.UpdateString(val.k, val.v)
+		} else {
+			trie.DeleteString(val.k)
+		}
+	}
+
+	hash := trie.Hash()
+	exp := ethutil.Hex2Bytes("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
+	if !bytes.Equal(hash, exp) {
+		t.Errorf("expected %x got %x", exp, hash)
+	}
+}
+
+func TestEmptyValues(t *testing.T) {
+	trie := NewEmpty()
+
+	vals := []struct{ k, v string }{
+		{"do", "verb"},
+		{"ether", "wookiedoo"},
+		{"horse", "stallion"},
+		{"shaman", "horse"},
+		{"doge", "coin"},
+		{"ether", ""},
+		{"dog", "puppy"},
+		{"shaman", ""},
+	}
+	for _, val := range vals {
+		trie.UpdateString(val.k, val.v)
+	}
+
+	hash := trie.Hash()
+	exp := ethutil.Hex2Bytes("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
+	if !bytes.Equal(hash, exp) {
+		t.Errorf("expected %x got %x", exp, hash)
+	}
+}
+
+func TestReplication(t *testing.T) {
+	trie := NewEmpty()
+	vals := []struct{ k, v string }{
+		{"do", "verb"},
+		{"ether", "wookiedoo"},
+		{"horse", "stallion"},
+		{"shaman", "horse"},
+		{"doge", "coin"},
+		{"ether", ""},
+		{"dog", "puppy"},
+		{"shaman", ""},
+		{"somethingveryoddindeedthis is", "myothernodedata"},
+	}
+	for _, val := range vals {
+		trie.UpdateString(val.k, val.v)
+	}
+	trie.Commit()
+
+	trie2 := New(trie.roothash, trie.cache.backend)
+	if string(trie2.GetString("horse")) != "stallion" {
+		t.Error("expected to have harse => stallion")
+	}
+
+	hash := trie2.Hash()
+	exp := trie.Hash()
+	if !bytes.Equal(hash, exp) {
+		t.Errorf("root failure. expected %x got %x", exp, hash)
+	}
+
+}
+
+func TestReset(t *testing.T) {
+	trie := NewEmpty()
+	vals := []struct{ k, v string }{
+		{"do", "verb"},
+		{"ether", "wookiedoo"},
+		{"horse", "stallion"},
+	}
+	for _, val := range vals {
+		trie.UpdateString(val.k, val.v)
+	}
+	trie.Commit()
+
+	before := ethutil.CopyBytes(trie.roothash)
+	trie.UpdateString("should", "revert")
+	trie.Hash()
+	// Should have no effect
+	trie.Hash()
+	trie.Hash()
+	// ###
+
+	trie.Reset()
+	after := ethutil.CopyBytes(trie.roothash)
+
+	if !bytes.Equal(before, after) {
+		t.Errorf("expected roots to be equal. %x - %x", before, after)
+	}
+}
+
+func TestParanoia(t *testing.T) {
+	t.Skip()
+	trie := NewEmpty()
+
+	vals := []struct{ k, v string }{
+		{"do", "verb"},
+		{"ether", "wookiedoo"},
+		{"horse", "stallion"},
+		{"shaman", "horse"},
+		{"doge", "coin"},
+		{"ether", ""},
+		{"dog", "puppy"},
+		{"shaman", ""},
+		{"somethingveryoddindeedthis is", "myothernodedata"},
+	}
+	for _, val := range vals {
+		trie.UpdateString(val.k, val.v)
+	}
+	trie.Commit()
+
+	ok, t2 := ParanoiaCheck(trie, trie.cache.backend)
+	if !ok {
+		t.Errorf("trie paranoia check failed %x %x", trie.roothash, t2.roothash)
+	}
+}
+
+// Not an actual test
+func TestOutput(t *testing.T) {
+	t.Skip()
+
+	base := "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+	trie := NewEmpty()
+	for i := 0; i < 50; i++ {
+		trie.UpdateString(fmt.Sprintf("%s%d", base, i), "valueeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee")
+	}
+	fmt.Println("############################## FULL ################################")
+	fmt.Println(trie.root)
+
+	trie.Commit()
+	fmt.Println("############################## SMALL ################################")
+	trie2 := New(trie.roothash, trie.cache.backend)
+	trie2.GetString(base + "20")
+	fmt.Println(trie2.root)
+}
+
+func BenchmarkGets(b *testing.B) {
+	trie := NewEmpty()
+	vals := []struct{ k, v string }{
+		{"do", "verb"},
+		{"ether", "wookiedoo"},
+		{"horse", "stallion"},
+		{"shaman", "horse"},
+		{"doge", "coin"},
+		{"ether", ""},
+		{"dog", "puppy"},
+		{"shaman", ""},
+		{"somethingveryoddindeedthis is", "myothernodedata"},
+	}
+	for _, val := range vals {
+		trie.UpdateString(val.k, val.v)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		trie.Get([]byte("horse"))
+	}
+}
+
+func BenchmarkUpdate(b *testing.B) {
+	trie := NewEmpty()
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		trie.UpdateString(fmt.Sprintf("aaaaaaaaa%d", i), "value")
+	}
+	trie.Hash()
+}
diff --git a/ptrie/valuenode.go b/ptrie/valuenode.go
new file mode 100644
index 000000000..c593eb6c6
--- /dev/null
+++ b/ptrie/valuenode.go
@@ -0,0 +1,13 @@
+package ptrie
+
+type ValueNode struct {
+	trie *Trie
+	data []byte
+}
+
+func (self *ValueNode) Value() Node          { return self } // Best not to call :-)
+func (self *ValueNode) Val() []byte          { return self.data }
+func (self *ValueNode) Dirty() bool          { return true }
+func (self *ValueNode) Copy() Node           { return &ValueNode{self.trie, self.data} }
+func (self *ValueNode) RlpData() interface{} { return self.data }
+func (self *ValueNode) Hash() interface{}    { return self.data }
diff --git a/rlp/decode.go b/rlp/decode.go
new file mode 100644
index 000000000..712d9fcf1
--- /dev/null
+++ b/rlp/decode.go
@@ -0,0 +1,743 @@
+package rlp
+
+import (
+	"bufio"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"io"
+	"math/big"
+	"reflect"
+)
+
+var (
+	errNoPointer     = errors.New("rlp: interface given to Decode must be a pointer")
+	errDecodeIntoNil = errors.New("rlp: pointer given to Decode must not be nil")
+)
+
+// Decoder is implemented by types that require custom RLP
+// decoding rules or need to decode into private fields.
+//
+// The DecodeRLP method should read one value from the given
+// Stream. It is not forbidden to read less or more, but it might
+// be confusing.
+type Decoder interface {
+	DecodeRLP(*Stream) error
+}
+
+// Decode parses RLP-encoded data from r and stores the result in the
+// value pointed to by val. Val must be a non-nil pointer. If r does
+// not implement ByteReader, Decode will do its own buffering.
+//
+// Decode uses the following type-dependent decoding rules:
+//
+// If the type implements the Decoder interface, decode calls
+// DecodeRLP.
+//
+// To decode into a pointer, Decode will set the pointer to nil if the
+// input has size zero or the input is a single byte with value zero.
+// If the input has nonzero size, Decode will allocate a new value of
+// the type being pointed to.
+//
+// To decode into a struct, Decode expects the input to be an RLP
+// list. The decoded elements of the list are assigned to each public
+// field in the order given by the struct's definition. If the input
+// list has too few elements, no error is returned and the remaining
+// fields will have the zero value.
+// Recursive struct types are supported.
+//
+// To decode into a slice, the input must be a list and the resulting
+// slice will contain the input elements in order.
+// As a special case, if the slice has a byte-size element type, the input
+// can also be an RLP string.
+//
+// To decode into a Go string, the input must be an RLP string. The
+// bytes are taken as-is and will not necessarily be valid UTF-8.
+//
+// To decode into an unsigned integer type, the input must also be an RLP
+// string. The bytes are interpreted as a big endian representation of
+// the integer. If the RLP string is larger than the bit size of the
+// type, Decode will return an error. Decode also supports *big.Int.
+// There is no size limit for big integers.
+//
+// To decode into an interface value, Decode stores one of these
+// in the value:
+//
+//	[]interface{}, for RLP lists
+//	[]byte, for RLP strings
+//
+// Non-empty interface types are not supported, nor are booleans,
+// signed integers, floating point numbers, maps, channels and
+// functions.
+func Decode(r io.Reader, val interface{}) error {
+	return NewStream(r).Decode(val)
+}
+
+type decodeError struct {
+	msg string
+	typ reflect.Type
+}
+
+func (err decodeError) Error() string {
+	return fmt.Sprintf("rlp: %s for %v", err.msg, err.typ)
+}
+
+func wrapStreamError(err error, typ reflect.Type) error {
+	switch err {
+	case ErrExpectedList:
+		return decodeError{"expected input list", typ}
+	case ErrExpectedString:
+		return decodeError{"expected input string or byte", typ}
+	case errUintOverflow:
+		return decodeError{"input string too long", typ}
+	case errNotAtEOL:
+		return decodeError{"input list has too many elements", typ}
+	}
+	return err
+}
+
+var (
+	decoderInterface = reflect.TypeOf(new(Decoder)).Elem()
+	bigInt           = reflect.TypeOf(big.Int{})
+)
+
+func makeDecoder(typ reflect.Type) (dec decoder, err error) {
+	kind := typ.Kind()
+	switch {
+	case typ.Implements(decoderInterface):
+		return decodeDecoder, nil
+	case kind != reflect.Ptr && reflect.PtrTo(typ).Implements(decoderInterface):
+		return decodeDecoderNoPtr, nil
+	case typ.AssignableTo(reflect.PtrTo(bigInt)):
+		return decodeBigInt, nil
+	case typ.AssignableTo(bigInt):
+		return decodeBigIntNoPtr, nil
+	case isUint(kind):
+		return decodeUint, nil
+	case kind == reflect.String:
+		return decodeString, nil
+	case kind == reflect.Slice || kind == reflect.Array:
+		return makeListDecoder(typ)
+	case kind == reflect.Struct:
+		return makeStructDecoder(typ)
+	case kind == reflect.Ptr:
+		return makePtrDecoder(typ)
+	case kind == reflect.Interface && typ.NumMethod() == 0:
+		return decodeInterface, nil
+	default:
+		return nil, fmt.Errorf("rlp: type %v is not RLP-serializable", typ)
+	}
+}
+
+func decodeUint(s *Stream, val reflect.Value) error {
+	typ := val.Type()
+	num, err := s.uint(typ.Bits())
+	if err != nil {
+		return wrapStreamError(err, val.Type())
+	}
+	val.SetUint(num)
+	return nil
+}
+
+func decodeString(s *Stream, val reflect.Value) error {
+	b, err := s.Bytes()
+	if err != nil {
+		return wrapStreamError(err, val.Type())
+	}
+	val.SetString(string(b))
+	return nil
+}
+
+func decodeBigIntNoPtr(s *Stream, val reflect.Value) error {
+	return decodeBigInt(s, val.Addr())
+}
+
+func decodeBigInt(s *Stream, val reflect.Value) error {
+	b, err := s.Bytes()
+	if err != nil {
+		return wrapStreamError(err, val.Type())
+	}
+	i := val.Interface().(*big.Int)
+	if i == nil {
+		i = new(big.Int)
+		val.Set(reflect.ValueOf(i))
+	}
+	i.SetBytes(b)
+	return nil
+}
+
+func makeListDecoder(typ reflect.Type) (decoder, error) {
+	etype := typ.Elem()
+	if etype.Kind() == reflect.Uint8 && !reflect.PtrTo(etype).Implements(decoderInterface) {
+		if typ.Kind() == reflect.Array {
+			return decodeByteArray, nil
+		} else {
+			return decodeByteSlice, nil
+		}
+	}
+	etypeinfo, err := cachedTypeInfo1(etype)
+	if err != nil {
+		return nil, err
+	}
+
+	if typ.Kind() == reflect.Array {
+		return func(s *Stream, val reflect.Value) error {
+			return decodeListArray(s, val, etypeinfo.decoder)
+		}, nil
+	}
+	return func(s *Stream, val reflect.Value) error {
+		return decodeListSlice(s, val, etypeinfo.decoder)
+	}, nil
+}
+
+func decodeListSlice(s *Stream, val reflect.Value, elemdec decoder) error {
+	size, err := s.List()
+	if err != nil {
+		return wrapStreamError(err, val.Type())
+	}
+	if size == 0 {
+		val.Set(reflect.MakeSlice(val.Type(), 0, 0))
+		return s.ListEnd()
+	}
+
+	i := 0
+	for ; ; i++ {
+		// grow slice if necessary
+		if i >= val.Cap() {
+			newcap := val.Cap() + val.Cap()/2
+			if newcap < 4 {
+				newcap = 4
+			}
+			newv := reflect.MakeSlice(val.Type(), val.Len(), newcap)
+			reflect.Copy(newv, val)
+			val.Set(newv)
+		}
+		if i >= val.Len() {
+			val.SetLen(i + 1)
+		}
+		// decode into element
+		if err := elemdec(s, val.Index(i)); err == EOL {
+			break
+		} else if err != nil {
+			return err
+		}
+	}
+	if i < val.Len() {
+		val.SetLen(i)
+	}
+	return s.ListEnd()
+}
+
+func decodeListArray(s *Stream, val reflect.Value, elemdec decoder) error {
+	size, err := s.List()
+	if err != nil {
+		return err
+	}
+	if size == 0 {
+		zero(val, 0)
+		return s.ListEnd()
+	}
+
+	// The approach here is stolen from package json, although we differ
+	// in the semantics for arrays. package json discards remaining
+	// elements that would not fit into the array. We generate an error in
+	// this case because we'd be losing information.
+	vlen := val.Len()
+	i := 0
+	for ; i < vlen; i++ {
+		if err := elemdec(s, val.Index(i)); err == EOL {
+			break
+		} else if err != nil {
+			return err
+		}
+	}
+	if i < vlen {
+		zero(val, i)
+	}
+	return wrapStreamError(s.ListEnd(), val.Type())
+}
+
+func decodeByteSlice(s *Stream, val reflect.Value) error {
+	kind, _, err := s.Kind()
+	if err != nil {
+		return err
+	}
+	if kind == List {
+		return decodeListSlice(s, val, decodeUint)
+	}
+	b, err := s.Bytes()
+	if err == nil {
+		val.SetBytes(b)
+	}
+	return err
+}
+
+func decodeByteArray(s *Stream, val reflect.Value) error {
+	kind, size, err := s.Kind()
+	if err != nil {
+		return err
+	}
+	switch kind {
+	case Byte:
+		if val.Len() == 0 {
+			return decodeError{"input string too long", val.Type()}
+		}
+		bv, _ := s.Uint()
+		val.Index(0).SetUint(bv)
+		zero(val, 1)
+	case String:
+		if uint64(val.Len()) < size {
+			return decodeError{"input string too long", val.Type()}
+		}
+		slice := val.Slice(0, int(size)).Interface().([]byte)
+		if err := s.readFull(slice); err != nil {
+			return err
+		}
+		zero(val, int(size))
+	case List:
+		return decodeListArray(s, val, decodeUint)
+	}
+	return nil
+}
+
+func zero(val reflect.Value, start int) {
+	z := reflect.Zero(val.Type().Elem())
+	end := val.Len()
+	for i := start; i < end; i++ {
+		val.Index(i).Set(z)
+	}
+}
+
+type field struct {
+	index int
+	info  *typeinfo
+}
+
+func makeStructDecoder(typ reflect.Type) (decoder, error) {
+	var fields []field
+	for i := 0; i < typ.NumField(); i++ {
+		if f := typ.Field(i); f.PkgPath == "" { // exported
+			info, err := cachedTypeInfo1(f.Type)
+			if err != nil {
+				return nil, err
+			}
+			fields = append(fields, field{i, info})
+		}
+	}
+	dec := func(s *Stream, val reflect.Value) (err error) {
+		if _, err = s.List(); err != nil {
+			return wrapStreamError(err, typ)
+		}
+		for _, f := range fields {
+			err = f.info.decoder(s, val.Field(f.index))
+			if err == EOL {
+				// too few elements. leave the rest at their zero value.
+				break
+			} else if err != nil {
+				return err
+			}
+		}
+		return wrapStreamError(s.ListEnd(), typ)
+	}
+	return dec, nil
+}
+
+func makePtrDecoder(typ reflect.Type) (decoder, error) {
+	etype := typ.Elem()
+	etypeinfo, err := cachedTypeInfo1(etype)
+	if err != nil {
+		return nil, err
+	}
+	dec := func(s *Stream, val reflect.Value) (err error) {
+		_, size, err := s.Kind()
+		if err != nil || size == 0 && s.byteval == 0 {
+			val.Set(reflect.Zero(typ)) // set to nil
+			return err
+		}
+		newval := val
+		if val.IsNil() {
+			newval = reflect.New(etype)
+		}
+		if err = etypeinfo.decoder(s, newval.Elem()); err == nil {
+			val.Set(newval)
+		}
+		return err
+	}
+	return dec, nil
+}
+
+var ifsliceType = reflect.TypeOf([]interface{}{})
+
+func decodeInterface(s *Stream, val reflect.Value) error {
+	kind, _, err := s.Kind()
+	if err != nil {
+		return err
+	}
+	if kind == List {
+		slice := reflect.New(ifsliceType).Elem()
+		if err := decodeListSlice(s, slice, decodeInterface); err != nil {
+			return err
+		}
+		val.Set(slice)
+	} else {
+		b, err := s.Bytes()
+		if err != nil {
+			return err
+		}
+		val.Set(reflect.ValueOf(b))
+	}
+	return nil
+}
+
+// This decoder is used for non-pointer values of types
+// that implement the Decoder interface using a pointer receiver.
+func decodeDecoderNoPtr(s *Stream, val reflect.Value) error {
+	return val.Addr().Interface().(Decoder).DecodeRLP(s)
+}
+
+func decodeDecoder(s *Stream, val reflect.Value) error {
+	// Decoder instances are not handled using the pointer rule if the type
+	// implements Decoder with pointer receiver (i.e. always)
+	// because it might handle empty values specially.
+	// We need to allocate one here in this case, like makePtrDecoder does.
+	if val.Kind() == reflect.Ptr && val.IsNil() {
+		val.Set(reflect.New(val.Type().Elem()))
+	}
+	return val.Interface().(Decoder).DecodeRLP(s)
+}
+
+// Kind represents the kind of value contained in an RLP stream.
+type Kind int
+
+const (
+	Byte Kind = iota
+	String
+	List
+)
+
+func (k Kind) String() string {
+	switch k {
+	case Byte:
+		return "Byte"
+	case String:
+		return "String"
+	case List:
+		return "List"
+	default:
+		return fmt.Sprintf("Unknown(%d)", k)
+	}
+}
+
+var (
+	// EOL is returned when the end of the current list
+	// has been reached during streaming.
+	EOL = errors.New("rlp: end of list")
+
+	// Other errors
+	ErrExpectedString = errors.New("rlp: expected String or Byte")
+	ErrExpectedList   = errors.New("rlp: expected List")
+	ErrElemTooLarge   = errors.New("rlp: element is larger than containing list")
+
+	// internal errors
+	errNotInList = errors.New("rlp: call of ListEnd outside of any list")
+	errNotAtEOL  = errors.New("rlp: call of ListEnd not positioned at EOL")
+)
+
+// ByteReader must be implemented by any input reader for a Stream. It
+// is implemented by e.g. bufio.Reader and bytes.Reader.
+type ByteReader interface {
+	io.Reader
+	io.ByteReader
+}
+
+// Stream can be used for piecemeal decoding of an input stream. This
+// is useful if the input is very large or if the decoding rules for a
+// type depend on the input structure. Stream does not keep an
+// internal buffer. After decoding a value, the input reader will be
+// positioned just before the type information for the next value.
+//
+// When decoding a list and the input position reaches the declared
+// length of the list, all operations will return error EOL.
+// The end of the list must be acknowledged using ListEnd to continue
+// reading the enclosing list.
+//
+// Stream is not safe for concurrent use.
+type Stream struct {
+	r       ByteReader
+	uintbuf []byte
+
+	kind    Kind   // kind of value ahead
+	size    uint64 // size of value ahead
+	byteval byte   // value of single byte in type tag
+	stack   []listpos
+}
+
+type listpos struct{ pos, size uint64 }
+
+// NewStream creates a new stream reading from r.
+// If r does not implement ByteReader, the Stream will
+// introduce its own buffering.
+func NewStream(r io.Reader) *Stream {
+	s := new(Stream)
+	s.Reset(r)
+	return s
+}
+
+// NewListStream creates a new stream that pretends to be positioned
+// at an encoded list of the given length.
+func NewListStream(r io.Reader, len uint64) *Stream {
+	s := new(Stream)
+	s.Reset(r)
+	s.kind = List
+	s.size = len
+	return s
+}
+
+// Bytes reads an RLP string and returns its contents as a byte slice.
+// If the input does not contain an RLP string, the returned
+// error will be ErrExpectedString.
+func (s *Stream) Bytes() ([]byte, error) {
+	kind, size, err := s.Kind()
+	if err != nil {
+		return nil, err
+	}
+	switch kind {
+	case Byte:
+		s.kind = -1 // rearm Kind
+		return []byte{s.byteval}, nil
+	case String:
+		b := make([]byte, size)
+		if err = s.readFull(b); err != nil {
+			return nil, err
+		}
+		return b, nil
+	default:
+		return nil, ErrExpectedString
+	}
+}
+
+var errUintOverflow = errors.New("rlp: uint overflow")
+
+// Uint reads an RLP string of up to 8 bytes and returns its contents
+// as an unsigned integer. If the input does not contain an RLP string, the
+// returned error will be ErrExpectedString.
+func (s *Stream) Uint() (uint64, error) {
+	return s.uint(64)
+}
+
+func (s *Stream) uint(maxbits int) (uint64, error) {
+	kind, size, err := s.Kind()
+	if err != nil {
+		return 0, err
+	}
+	switch kind {
+	case Byte:
+		s.kind = -1 // rearm Kind
+		return uint64(s.byteval), nil
+	case String:
+		if size > uint64(maxbits/8) {
+			return 0, errUintOverflow
+		}
+		return s.readUint(byte(size))
+	default:
+		return 0, ErrExpectedString
+	}
+}
+
+// List starts decoding an RLP list. If the input does not contain a
+// list, the returned error will be ErrExpectedList. When the list's
+// end has been reached, any Stream operation will return EOL.
+func (s *Stream) List() (size uint64, err error) {
+	kind, size, err := s.Kind()
+	if err != nil {
+		return 0, err
+	}
+	if kind != List {
+		return 0, ErrExpectedList
+	}
+	s.stack = append(s.stack, listpos{0, size})
+	s.kind = -1
+	s.size = 0
+	return size, nil
+}
+
+// ListEnd returns to the enclosing list.
+// The input reader must be positioned at the end of a list.
+func (s *Stream) ListEnd() error {
+	if len(s.stack) == 0 {
+		return errNotInList
+	}
+	tos := s.stack[len(s.stack)-1]
+	if tos.pos != tos.size {
+		return errNotAtEOL
+	}
+	s.stack = s.stack[:len(s.stack)-1] // pop
+	if len(s.stack) > 0 {
+		s.stack[len(s.stack)-1].pos += tos.size
+	}
+	s.kind = -1
+	s.size = 0
+	return nil
+}
+
+// Decode decodes a value and stores the result in the value pointed
+// to by val. Please see the documentation for the Decode function
+// to learn about the decoding rules.
+func (s *Stream) Decode(val interface{}) error {
+	if val == nil {
+		return errDecodeIntoNil
+	}
+	rval := reflect.ValueOf(val)
+	rtyp := rval.Type()
+	if rtyp.Kind() != reflect.Ptr {
+		return errNoPointer
+	}
+	if rval.IsNil() {
+		return errDecodeIntoNil
+	}
+	info, err := cachedTypeInfo(rtyp.Elem())
+	if err != nil {
+		return err
+	}
+	return info.decoder(s, rval.Elem())
+}
+
+// Reset discards any information about the current decoding context
+// and starts reading from r. If r does not also implement ByteReader,
+// Stream will do its own buffering.
+func (s *Stream) Reset(r io.Reader) {
+	bufr, ok := r.(ByteReader)
+	if !ok {
+		bufr = bufio.NewReader(r)
+	}
+	s.r = bufr
+	s.stack = s.stack[:0]
+	s.size = 0
+	s.kind = -1
+	if s.uintbuf == nil {
+		s.uintbuf = make([]byte, 8)
+	}
+}
+
+// Kind returns the kind and size of the next value in the
+// input stream.
+//
+// The returned size is the number of bytes that make up the value.
+// For kind == Byte, the size is zero because the value is
+// contained in the type tag.
+//
+// The first call to Kind will read size information from the input
+// reader and leave it positioned at the start of the actual bytes of
+// the value. Subsequent calls to Kind (until the value is decoded)
+// will not advance the input reader and return cached information.
+func (s *Stream) Kind() (kind Kind, size uint64, err error) {
+	var tos *listpos
+	if len(s.stack) > 0 {
+		tos = &s.stack[len(s.stack)-1]
+	}
+	if s.kind < 0 {
+		if tos != nil && tos.pos == tos.size {
+			return 0, 0, EOL
+		}
+		kind, size, err = s.readKind()
+		if err != nil {
+			return 0, 0, err
+		}
+		s.kind, s.size = kind, size
+	}
+	if tos != nil && tos.pos+s.size > tos.size {
+		return 0, 0, ErrElemTooLarge
+	}
+	return s.kind, s.size, nil
+}
+
+func (s *Stream) readKind() (kind Kind, size uint64, err error) {
+	b, err := s.readByte()
+	if err != nil {
+		return 0, 0, err
+	}
+	s.byteval = 0
+	switch {
+	case b < 0x80:
+		// For a single byte whose value is in the [0x00, 0x7F] range, that byte
+		// is its own RLP encoding.
+		s.byteval = b
+		return Byte, 0, nil
+	case b < 0xB8:
+		// Otherwise, if a string is 0-55 bytes long,
+		// the RLP encoding consists of a single byte with value 0x80 plus the
+		// length of the string followed by the string. The range of the first
+		// byte is thus [0x80, 0xB7].
+		return String, uint64(b - 0x80), nil
+	case b < 0xC0:
+		// If a string is more than 55 bytes long, the
+		// RLP encoding consists of a single byte with value 0xB7 plus the length
+		// of the length of the string in binary form, followed by the length of
+		// the string, followed by the string. For example, a length-1024 string
+		// would be encoded as 0xB90400 followed by the string. The range of
+		// the first byte is thus [0xB8, 0xBF].
+		size, err = s.readUint(b - 0xB7)
+		return String, size, err
+	case b < 0xF8:
+		// If the total payload of a list
+		// (i.e. the combined length of all its items) is 0-55 bytes long, the
+		// RLP encoding consists of a single byte with value 0xC0 plus the length
+		// of the list followed by the concatenation of the RLP encodings of the
+		// items. The range of the first byte is thus [0xC0, 0xF7].
+		return List, uint64(b - 0xC0), nil
+	default:
+		// If the total payload of a list is more than 55 bytes long,
+		// the RLP encoding consists of a single byte with value 0xF7
+		// plus the length of the length of the payload in binary
+		// form, followed by the length of the payload, followed by
+		// the concatenation of the RLP encodings of the items. The
+		// range of the first byte is thus [0xF8, 0xFF].
+		size, err = s.readUint(b - 0xF7)
+		return List, size, err
+	}
+}
+
+func (s *Stream) readUint(size byte) (uint64, error) {
+	if size == 1 {
+		b, err := s.readByte()
+		if err == io.EOF {
+			err = io.ErrUnexpectedEOF
+		}
+		return uint64(b), err
+	}
+	start := int(8 - size)
+	for i := 0; i < start; i++ {
+		s.uintbuf[i] = 0
+	}
+	err := s.readFull(s.uintbuf[start:])
+	return binary.BigEndian.Uint64(s.uintbuf), err
+}
+
+func (s *Stream) readFull(buf []byte) (err error) {
+	s.willRead(uint64(len(buf)))
+	var nn, n int
+	for n < len(buf) && err == nil {
+		nn, err = s.r.Read(buf[n:])
+		n += nn
+	}
+	if err == io.EOF {
+		err = io.ErrUnexpectedEOF
+	}
+	return err
+}
+
+func (s *Stream) readByte() (byte, error) {
+	s.willRead(1)
+	b, err := s.r.ReadByte()
+	if len(s.stack) > 0 && err == io.EOF {
+		err = io.ErrUnexpectedEOF
+	}
+	return b, err
+}
+
+func (s *Stream) willRead(n uint64) {
+	s.kind = -1 // rearm Kind
+	if len(s.stack) > 0 {
+		s.stack[len(s.stack)-1].pos += n
+	}
+}
diff --git a/rlp/decode_test.go b/rlp/decode_test.go
new file mode 100644
index 000000000..7a1743937
--- /dev/null
+++ b/rlp/decode_test.go
@@ -0,0 +1,527 @@
+package rlp
+
+import (
+	"bytes"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"math/big"
+	"reflect"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+func TestStreamKind(t *testing.T) {
+	tests := []struct {
+		input    string
+		wantKind Kind
+		wantLen  uint64
+	}{
+		{"00", Byte, 0},
+		{"01", Byte, 0},
+		{"7F", Byte, 0},
+		{"80", String, 0},
+		{"B7", String, 55},
+		{"B800", String, 0},
+		{"B90400", String, 1024},
+		{"BA000400", String, 1024},
+		{"BB00000400", String, 1024},
+		{"BFFFFFFFFFFFFFFFFF", String, ^uint64(0)},
+		{"C0", List, 0},
+		{"C8", List, 8},
+		{"F7", List, 55},
+		{"F800", List, 0},
+		{"F804", List, 4},
+		{"F90400", List, 1024},
+		{"FFFFFFFFFFFFFFFFFF", List, ^uint64(0)},
+	}
+
+	for i, test := range tests {
+		s := NewStream(bytes.NewReader(unhex(test.input)))
+		kind, len, err := s.Kind()
+		if err != nil {
+			t.Errorf("test %d: Type returned error: %v", i, err)
+			continue
+		}
+		if kind != test.wantKind {
+			t.Errorf("test %d: kind mismatch: got %d, want %d", i, kind, test.wantKind)
+		}
+		if len != test.wantLen {
+			t.Errorf("test %d: len mismatch: got %d, want %d", i, len, test.wantLen)
+		}
+	}
+}
+
+func TestNewListStream(t *testing.T) {
+	ls := NewListStream(bytes.NewReader(unhex("0101010101")), 3)
+	if k, size, err := ls.Kind(); k != List || size != 3 || err != nil {
+		t.Errorf("Kind() returned (%v, %d, %v), expected (List, 3, nil)", k, size, err)
+	}
+	if size, err := ls.List(); size != 3 || err != nil {
+		t.Errorf("List() returned (%d, %v), expected (3, nil)", size, err)
+	}
+	for i := 0; i < 3; i++ {
+		if val, err := ls.Uint(); val != 1 || err != nil {
+			t.Errorf("Uint() returned (%d, %v), expected (1, nil)", val, err)
+		}
+	}
+	if err := ls.ListEnd(); err != nil {
+		t.Errorf("ListEnd() returned %v, expected (3, nil)", err)
+	}
+}
+
+func TestStreamErrors(t *testing.T) {
+	type calls []string
+	tests := []struct {
+		string
+		calls
+		error
+	}{
+		{"", calls{"Kind"}, io.EOF},
+		{"", calls{"List"}, io.EOF},
+		{"", calls{"Uint"}, io.EOF},
+		{"C0", calls{"Bytes"}, ErrExpectedString},
+		{"C0", calls{"Uint"}, ErrExpectedString},
+		{"81", calls{"Bytes"}, io.ErrUnexpectedEOF},
+		{"81", calls{"Uint"}, io.ErrUnexpectedEOF},
+		{"BFFFFFFFFFFFFFFF", calls{"Bytes"}, io.ErrUnexpectedEOF},
+		{"89000000000000000001", calls{"Uint"}, errUintOverflow},
+		{"00", calls{"List"}, ErrExpectedList},
+		{"80", calls{"List"}, ErrExpectedList},
+		{"C0", calls{"List", "Uint"}, EOL},
+		{"C801", calls{"List", "Uint", "Uint"}, io.ErrUnexpectedEOF},
+		{"C8C9", calls{"List", "Kind"}, ErrElemTooLarge},
+		{"C3C2010201", calls{"List", "List", "Uint", "Uint", "ListEnd", "Uint"}, EOL},
+		{"00", calls{"ListEnd"}, errNotInList},
+		{"C40102", calls{"List", "Uint", "ListEnd"}, errNotAtEOL},
+	}
+
+testfor:
+	for i, test := range tests {
+		s := NewStream(bytes.NewReader(unhex(test.string)))
+		rs := reflect.ValueOf(s)
+		for j, call := range test.calls {
+			fval := rs.MethodByName(call)
+			ret := fval.Call(nil)
+			err := "<nil>"
+			if lastret := ret[len(ret)-1].Interface(); lastret != nil {
+				err = lastret.(error).Error()
+			}
+			if j == len(test.calls)-1 {
+				if err != test.error.Error() {
+					t.Errorf("test %d: last call (%s) error mismatch\ngot:  %s\nwant: %v",
+						i, call, err, test.error)
+				}
+			} else if err != "<nil>" {
+				t.Errorf("test %d: call %d (%s) unexpected error: %q", i, j, call, err)
+				continue testfor
+			}
+		}
+	}
+}
+
+func TestStreamList(t *testing.T) {
+	s := NewStream(bytes.NewReader(unhex("C80102030405060708")))
+
+	len, err := s.List()
+	if err != nil {
+		t.Fatalf("List error: %v", err)
+	}
+	if len != 8 {
+		t.Fatalf("List returned invalid length, got %d, want 8", len)
+	}
+
+	for i := uint64(1); i <= 8; i++ {
+		v, err := s.Uint()
+		if err != nil {
+			t.Fatalf("Uint error: %v", err)
+		}
+		if i != v {
+			t.Errorf("Uint returned wrong value, got %d, want %d", v, i)
+		}
+	}
+
+	if _, err := s.Uint(); err != EOL {
+		t.Errorf("Uint error mismatch, got %v, want %v", err, EOL)
+	}
+	if err = s.ListEnd(); err != nil {
+		t.Fatalf("ListEnd error: %v", err)
+	}
+}
+
+func TestDecodeErrors(t *testing.T) {
+	r := bytes.NewReader(nil)
+
+	if err := Decode(r, nil); err != errDecodeIntoNil {
+		t.Errorf("Decode(r, nil) error mismatch, got %q, want %q", err, errDecodeIntoNil)
+	}
+
+	var nilptr *struct{}
+	if err := Decode(r, nilptr); err != errDecodeIntoNil {
+		t.Errorf("Decode(r, nilptr) error mismatch, got %q, want %q", err, errDecodeIntoNil)
+	}
+
+	if err := Decode(r, struct{}{}); err != errNoPointer {
+		t.Errorf("Decode(r, struct{}{}) error mismatch, got %q, want %q", err, errNoPointer)
+	}
+
+	expectErr := "rlp: type chan bool is not RLP-serializable"
+	if err := Decode(r, new(chan bool)); err == nil || err.Error() != expectErr {
+		t.Errorf("Decode(r, new(chan bool)) error mismatch, got %q, want %q", err, expectErr)
+	}
+
+	if err := Decode(r, new(uint)); err != io.EOF {
+		t.Errorf("Decode(r, new(int)) error mismatch, got %q, want %q", err, io.EOF)
+	}
+}
+
+type decodeTest struct {
+	input string
+	ptr   interface{}
+	value interface{}
+	error string
+}
+
+type simplestruct struct {
+	A uint
+	B string
+}
+
+type recstruct struct {
+	I     uint
+	Child *recstruct
+}
+
+var (
+	veryBigInt = big.NewInt(0).Add(
+		big.NewInt(0).Lsh(big.NewInt(0xFFFFFFFFFFFFFF), 16),
+		big.NewInt(0xFFFF),
+	)
+)
+
+var (
+	sharedByteArray [5]byte
+	sharedPtr       = new(*uint)
+)
+
+var decodeTests = []decodeTest{
+	// integers
+	{input: "05", ptr: new(uint32), value: uint32(5)},
+	{input: "80", ptr: new(uint32), value: uint32(0)},
+	{input: "8105", ptr: new(uint32), value: uint32(5)},
+	{input: "820505", ptr: new(uint32), value: uint32(0x0505)},
+	{input: "83050505", ptr: new(uint32), value: uint32(0x050505)},
+	{input: "8405050505", ptr: new(uint32), value: uint32(0x05050505)},
+	{input: "850505050505", ptr: new(uint32), error: "rlp: input string too long for uint32"},
+	{input: "C0", ptr: new(uint32), error: "rlp: expected input string or byte for uint32"},
+
+	// slices
+	{input: "C0", ptr: new([]uint), value: []uint{}},
+	{input: "C80102030405060708", ptr: new([]uint), value: []uint{1, 2, 3, 4, 5, 6, 7, 8}},
+
+	// arrays
+	{input: "C0", ptr: new([5]uint), value: [5]uint{}},
+	{input: "C50102030405", ptr: new([5]uint), value: [5]uint{1, 2, 3, 4, 5}},
+	{input: "C6010203040506", ptr: new([5]uint), error: "rlp: input list has too many elements for [5]uint"},
+
+	// byte slices
+	{input: "01", ptr: new([]byte), value: []byte{1}},
+	{input: "80", ptr: new([]byte), value: []byte{}},
+	{input: "8D6162636465666768696A6B6C6D", ptr: new([]byte), value: []byte("abcdefghijklm")},
+	{input: "C0", ptr: new([]byte), value: []byte{}},
+	{input: "C3010203", ptr: new([]byte), value: []byte{1, 2, 3}},
+	{input: "C3820102", ptr: new([]byte), error: "rlp: input string too long for uint8"},
+
+	// byte arrays
+	{input: "01", ptr: new([5]byte), value: [5]byte{1}},
+	{input: "80", ptr: new([5]byte), value: [5]byte{}},
+	{input: "850102030405", ptr: new([5]byte), value: [5]byte{1, 2, 3, 4, 5}},
+	{input: "C0", ptr: new([5]byte), value: [5]byte{}},
+	{input: "C3010203", ptr: new([5]byte), value: [5]byte{1, 2, 3, 0, 0}},
+	{input: "C3820102", ptr: new([5]byte), error: "rlp: input string too long for uint8"},
+	{input: "86010203040506", ptr: new([5]byte), error: "rlp: input string too long for [5]uint8"},
+	{input: "850101", ptr: new([5]byte), error: io.ErrUnexpectedEOF.Error()},
+
+	// byte array reuse (should be zeroed)
+	{input: "850102030405", ptr: &sharedByteArray, value: [5]byte{1, 2, 3, 4, 5}},
+	{input: "8101", ptr: &sharedByteArray, value: [5]byte{1}}, // kind: String
+	{input: "850102030405", ptr: &sharedByteArray, value: [5]byte{1, 2, 3, 4, 5}},
+	{input: "01", ptr: &sharedByteArray, value: [5]byte{1}}, // kind: Byte
+	{input: "C3010203", ptr: &sharedByteArray, value: [5]byte{1, 2, 3, 0, 0}},
+	{input: "C101", ptr: &sharedByteArray, value: [5]byte{1}}, // kind: List
+
+	// zero sized byte arrays
+	{input: "80", ptr: new([0]byte), value: [0]byte{}},
+	{input: "C0", ptr: new([0]byte), value: [0]byte{}},
+	{input: "01", ptr: new([0]byte), error: "rlp: input string too long for [0]uint8"},
+	{input: "8101", ptr: new([0]byte), error: "rlp: input string too long for [0]uint8"},
+
+	// strings
+	{input: "00", ptr: new(string), value: "\000"},
+	{input: "8D6162636465666768696A6B6C6D", ptr: new(string), value: "abcdefghijklm"},
+	{input: "C0", ptr: new(string), error: "rlp: expected input string or byte for string"},
+
+	// big ints
+	{input: "01", ptr: new(*big.Int), value: big.NewInt(1)},
+	{input: "89FFFFFFFFFFFFFFFFFF", ptr: new(*big.Int), value: veryBigInt},
+	{input: "10", ptr: new(big.Int), value: *big.NewInt(16)}, // non-pointer also works
+	{input: "C0", ptr: new(*big.Int), error: "rlp: expected input string or byte for *big.Int"},
+
+	// structs
+	{input: "C0", ptr: new(simplestruct), value: simplestruct{0, ""}},
+	{input: "C105", ptr: new(simplestruct), value: simplestruct{5, ""}},
+	{input: "C50583343434", ptr: new(simplestruct), value: simplestruct{5, "444"}},
+	{input: "C3010101", ptr: new(simplestruct), error: "rlp: input list has too many elements for rlp.simplestruct"},
+	{
+		input: "C501C302C103",
+		ptr:   new(recstruct),
+		value: recstruct{1, &recstruct{2, &recstruct{3, nil}}},
+	},
+
+	// pointers
+	{input: "00", ptr: new(*uint), value: (*uint)(nil)},
+	{input: "80", ptr: new(*uint), value: (*uint)(nil)},
+	{input: "C0", ptr: new(*uint), value: (*uint)(nil)},
+	{input: "07", ptr: new(*uint), value: uintp(7)},
+	{input: "8108", ptr: new(*uint), value: uintp(8)},
+	{input: "C109", ptr: new(*[]uint), value: &[]uint{9}},
+	{input: "C58403030303", ptr: new(*[][]byte), value: &[][]byte{{3, 3, 3, 3}}},
+
+	// pointer should be reset to nil
+	{input: "05", ptr: sharedPtr, value: uintp(5)},
+	{input: "80", ptr: sharedPtr, value: (*uint)(nil)},
+
+	// interface{}
+	{input: "00", ptr: new(interface{}), value: []byte{0}},
+	{input: "01", ptr: new(interface{}), value: []byte{1}},
+	{input: "80", ptr: new(interface{}), value: []byte{}},
+	{input: "850505050505", ptr: new(interface{}), value: []byte{5, 5, 5, 5, 5}},
+	{input: "C0", ptr: new(interface{}), value: []interface{}{}},
+	{input: "C50183040404", ptr: new(interface{}), value: []interface{}{[]byte{1}, []byte{4, 4, 4}}},
+}
+
+func uintp(i uint) *uint { return &i }
+
+func runTests(t *testing.T, decode func([]byte, interface{}) error) {
+	for i, test := range decodeTests {
+		input, err := hex.DecodeString(test.input)
+		if err != nil {
+			t.Errorf("test %d: invalid hex input %q", i, test.input)
+			continue
+		}
+		err = decode(input, test.ptr)
+		if err != nil && test.error == "" {
+			t.Errorf("test %d: unexpected Decode error: %v\ndecoding into %T\ninput %q",
+				i, err, test.ptr, test.input)
+			continue
+		}
+		if test.error != "" && fmt.Sprint(err) != test.error {
+			t.Errorf("test %d: Decode error mismatch\ngot  %v\nwant %v\ndecoding into %T\ninput %q",
+				i, err, test.error, test.ptr, test.input)
+			continue
+		}
+		deref := reflect.ValueOf(test.ptr).Elem().Interface()
+		if err == nil && !reflect.DeepEqual(deref, test.value) {
+			t.Errorf("test %d: value mismatch\ngot  %#v\nwant %#v\ndecoding into %T\ninput %q",
+				i, deref, test.value, test.ptr, test.input)
+		}
+	}
+}
+
+func TestDecodeWithByteReader(t *testing.T) {
+	runTests(t, func(input []byte, into interface{}) error {
+		return Decode(bytes.NewReader(input), into)
+	})
+}
+
+// dumbReader reads from a byte slice but does not
+// implement ReadByte.
+type dumbReader []byte
+
+func (r *dumbReader) Read(buf []byte) (n int, err error) {
+	if len(*r) == 0 {
+		return 0, io.EOF
+	}
+	n = copy(buf, *r)
+	*r = (*r)[n:]
+	return n, nil
+}
+
+func TestDecodeWithNonByteReader(t *testing.T) {
+	runTests(t, func(input []byte, into interface{}) error {
+		r := dumbReader(input)
+		return Decode(&r, into)
+	})
+}
+
+func TestDecodeStreamReset(t *testing.T) {
+	s := NewStream(nil)
+	runTests(t, func(input []byte, into interface{}) error {
+		s.Reset(bytes.NewReader(input))
+		return s.Decode(into)
+	})
+}
+
+type testDecoder struct{ called bool }
+
+func (t *testDecoder) DecodeRLP(s *Stream) error {
+	if _, err := s.Uint(); err != nil {
+		return err
+	}
+	t.called = true
+	return nil
+}
+
+func TestDecodeDecoder(t *testing.T) {
+	var s struct {
+		T1 testDecoder
+		T2 *testDecoder
+		T3 **testDecoder
+	}
+	if err := Decode(bytes.NewReader(unhex("C3010203")), &s); err != nil {
+		t.Fatalf("Decode error: %v", err)
+	}
+
+	if !s.T1.called {
+		t.Errorf("DecodeRLP was not called for (non-pointer) testDecoder")
+	}
+
+	if s.T2 == nil {
+		t.Errorf("*testDecoder has not been allocated")
+	} else if !s.T2.called {
+		t.Errorf("DecodeRLP was not called for *testDecoder")
+	}
+
+	if s.T3 == nil || *s.T3 == nil {
+		t.Errorf("**testDecoder has not been allocated")
+	} else if !(*s.T3).called {
+		t.Errorf("DecodeRLP was not called for **testDecoder")
+	}
+}
+
+type byteDecoder byte
+
+func (bd *byteDecoder) DecodeRLP(s *Stream) error {
+	_, err := s.Uint()
+	*bd = 255
+	return err
+}
+
+func (bd byteDecoder) called() bool {
+	return bd == 255
+}
+
+// This test verifies that the byte slice/byte array logic
+// does not kick in for element types implementing Decoder.
+func TestDecoderInByteSlice(t *testing.T) {
+	var slice []byteDecoder
+	if err := Decode(bytes.NewReader(unhex("C101")), &slice); err != nil {
+		t.Errorf("unexpected Decode error %v", err)
+	} else if !slice[0].called() {
+		t.Errorf("DecodeRLP not called for slice element")
+	}
+
+	var array [1]byteDecoder
+	if err := Decode(bytes.NewReader(unhex("C101")), &array); err != nil {
+		t.Errorf("unexpected Decode error %v", err)
+	} else if !array[0].called() {
+		t.Errorf("DecodeRLP not called for array element")
+	}
+}
+
+func ExampleDecode() {
+	input, _ := hex.DecodeString("C90A1486666F6F626172")
+
+	type example struct {
+		A, B    uint
+		private uint // private fields are ignored
+		String  string
+	}
+
+	var s example
+	err := Decode(bytes.NewReader(input), &s)
+	if err != nil {
+		fmt.Printf("Error: %v\n", err)
+	} else {
+		fmt.Printf("Decoded value: %#v\n", s)
+	}
+	// Output:
+	// Decoded value: rlp.example{A:0xa, B:0x14, private:0x0, String:"foobar"}
+}
+
+func ExampleStream() {
+	input, _ := hex.DecodeString("C90A1486666F6F626172")
+	s := NewStream(bytes.NewReader(input))
+
+	// Check what kind of value lies ahead
+	kind, size, _ := s.Kind()
+	fmt.Printf("Kind: %v size:%d\n", kind, size)
+
+	// Enter the list
+	if _, err := s.List(); err != nil {
+		fmt.Printf("List error: %v\n", err)
+		return
+	}
+
+	// Decode elements
+	fmt.Println(s.Uint())
+	fmt.Println(s.Uint())
+	fmt.Println(s.Bytes())
+
+	// Acknowledge end of list
+	if err := s.ListEnd(); err != nil {
+		fmt.Printf("ListEnd error: %v\n", err)
+	}
+	// Output:
+	// Kind: List size:9
+	// 10 <nil>
+	// 20 <nil>
+	// [102 111 111 98 97 114] <nil>
+}
+
+func BenchmarkDecode(b *testing.B) {
+	enc := encTest(90000)
+	b.SetBytes(int64(len(enc)))
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		var s []int
+		r := bytes.NewReader(enc)
+		if err := Decode(r, &s); err != nil {
+			b.Fatalf("Decode error: %v", err)
+		}
+	}
+}
+
+func BenchmarkDecodeIntSliceReuse(b *testing.B) {
+	enc := encTest(100000)
+	b.SetBytes(int64(len(enc)))
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	var s []int
+	for i := 0; i < b.N; i++ {
+		r := bytes.NewReader(enc)
+		if err := Decode(r, &s); err != nil {
+			b.Fatalf("Decode error: %v", err)
+		}
+	}
+}
+
+func encTest(n int) []byte {
+	s := make([]interface{}, n)
+	for i := 0; i < n; i++ {
+		s[i] = i
+	}
+	return ethutil.Encode(s)
+}
+
+func unhex(str string) []byte {
+	b, err := hex.DecodeString(str)
+	if err != nil {
+		panic(fmt.Sprintf("invalid hex string: %q", str))
+	}
+	return b
+}
diff --git a/rlp/doc.go b/rlp/doc.go
new file mode 100644
index 000000000..aab98ea43
--- /dev/null
+++ b/rlp/doc.go
@@ -0,0 +1,17 @@
+/*
+Package rlp implements the RLP serialization format.
+
+The purpose of RLP (Recursive Linear Prefix) qis to encode arbitrarily
+nested arrays of binary data, and RLP is the main encoding method used
+to serialize objects in Ethereum. The only purpose of RLP is to encode
+structure; encoding specific atomic data types (eg. strings, ints,
+floats) is left up to higher-order protocols; in Ethereum integers
+must be represented in big endian binary form with no leading zeroes
+(thus making the integer value zero be equivalent to the empty byte
+array).
+
+RLP values are distinguished by a type tag. The type tag precedes the
+value in the input stream and defines the size and kind of the bytes
+that follow.
+*/
+package rlp
diff --git a/rlp/typecache.go b/rlp/typecache.go
new file mode 100644
index 000000000..52e68a3c5
--- /dev/null
+++ b/rlp/typecache.go
@@ -0,0 +1,62 @@
+package rlp
+
+import (
+	"reflect"
+	"sync"
+)
+
+type decoder func(*Stream, reflect.Value) error
+
+type typeinfo struct {
+	decoder
+}
+
+var (
+	typeCacheMutex sync.RWMutex
+	typeCache      = make(map[reflect.Type]*typeinfo)
+)
+
+func cachedTypeInfo(typ reflect.Type) (*typeinfo, error) {
+	typeCacheMutex.RLock()
+	info := typeCache[typ]
+	typeCacheMutex.RUnlock()
+	if info != nil {
+		return info, nil
+	}
+	// not in the cache, need to generate info for this type.
+	typeCacheMutex.Lock()
+	defer typeCacheMutex.Unlock()
+	return cachedTypeInfo1(typ)
+}
+
+func cachedTypeInfo1(typ reflect.Type) (*typeinfo, error) {
+	info := typeCache[typ]
+	if info != nil {
+		// another goroutine got the write lock first
+		return info, nil
+	}
+	// put a dummmy value into the cache before generating.
+	// if the generator tries to lookup itself, it will get
+	// the dummy value and won't call itself recursively.
+	typeCache[typ] = new(typeinfo)
+	info, err := genTypeInfo(typ)
+	if err != nil {
+		// remove the dummy value if the generator fails
+		delete(typeCache, typ)
+		return nil, err
+	}
+	*typeCache[typ] = *info
+	return typeCache[typ], err
+}
+
+func genTypeInfo(typ reflect.Type) (info *typeinfo, err error) {
+	info = new(typeinfo)
+	if info.decoder, err = makeDecoder(typ); err != nil {
+		return nil, err
+	}
+	return info, nil
+}
+
+func isUint(k reflect.Kind) bool {
+	return k >= reflect.Uint && k <= reflect.Uintptr
+}
diff --git a/rpc/json.go b/rpc/json.go
new file mode 100644
index 000000000..e467f9a34
--- /dev/null
+++ b/rpc/json.go
@@ -0,0 +1,20 @@
+package rpc
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type jsonWrapper struct{}
+
+func (self jsonWrapper) Send(writer io.Writer, v interface{}) (n int, err error) {
+	var payload []byte
+	payload, err = json.Marshal(v)
+	if err != nil {
+		return 0, err
+	}
+
+	return writer.Write(payload)
+}
+
+var JSON jsonWrapper
diff --git a/rpc/message.go b/rpc/message.go
new file mode 100644
index 000000000..c8103eded
--- /dev/null
+++ b/rpc/message.go
@@ -0,0 +1,14 @@
+package rpc
+
+import "github.com/ethereum/go-ethereum/ethutil"
+
+type Message struct {
+	Call string        `json:"call"`
+	Args []interface{} `json:"args"`
+	Id   int           `json:"_id"`
+	Data interface{}   `json:"data"`
+}
+
+func (self *Message) Arguments() *ethutil.Value {
+	return ethutil.NewValue(self.Args)
+}
diff --git a/rpc/packages.go b/rpc/packages.go
new file mode 100644
index 000000000..5535e6e79
--- /dev/null
+++ b/rpc/packages.go
@@ -0,0 +1,311 @@
+package rpc
+
+import (
+	"encoding/json"
+	"errors"
+	"math/big"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/xeth"
+)
+
+type EthereumApi struct {
+	pipe *xeth.JSXEth
+}
+
+type JsonArgs interface {
+	requirements() error
+}
+
+type BlockResponse struct {
+	JsonResponse
+}
+type GetBlockArgs struct {
+	BlockNumber int
+	Hash        string
+}
+
+type ErrorResponse struct {
+	Error     bool   `json:"error"`
+	ErrorText string `json:"errorText"`
+}
+
+type JsonResponse interface {
+}
+
+type SuccessRes struct {
+	Error  bool         `json:"error"`
+	Result JsonResponse `json:"result"`
+}
+
+func NewSuccessRes(object JsonResponse) string {
+	e := SuccessRes{Error: false, Result: object}
+	res, err := json.Marshal(e)
+	if err != nil {
+		// This should never happen
+		panic("Creating json error response failed, help")
+	}
+	success := string(res)
+	return success
+}
+
+func NewErrorResponse(msg string) error {
+	e := ErrorResponse{Error: true, ErrorText: msg}
+	res, err := json.Marshal(e)
+	if err != nil {
+		// This should never happen
+		panic("Creating json error response failed, help")
+	}
+	newErr := errors.New(string(res))
+	return newErr
+}
+
+func (b *GetBlockArgs) requirements() error {
+	if b.BlockNumber == 0 && b.Hash == "" {
+		return NewErrorResponse("GetBlock requires either a block 'number' or a block 'hash' as argument")
+	}
+	return nil
+}
+
+func (p *EthereumApi) GetBlock(args *GetBlockArgs, reply *string) error {
+	err := args.requirements()
+	if err != nil {
+		return err
+	}
+
+	block := p.pipe.BlockByHash(args.Hash)
+	*reply = NewSuccessRes(block)
+	return nil
+}
+
+type NewTxArgs struct {
+	Sec       string
+	Recipient string
+	Value     string
+	Gas       string
+	GasPrice  string
+	Init      string
+	Body      string
+}
+type TxResponse struct {
+	Hash string
+}
+
+func (a *NewTxArgs) requirements() error {
+	if a.Recipient == "" {
+		return NewErrorResponse("Transact requires a 'recipient' address as argument")
+	}
+	if a.Value == "" {
+		return NewErrorResponse("Transact requires a 'value' as argument")
+	}
+	if a.Gas == "" {
+		return NewErrorResponse("Transact requires a 'gas' value as argument")
+	}
+	if a.GasPrice == "" {
+		return NewErrorResponse("Transact requires a 'gasprice' value as argument")
+	}
+	return nil
+}
+
+func (a *NewTxArgs) requirementsContract() error {
+	if a.Value == "" {
+		return NewErrorResponse("Create requires a 'value' as argument")
+	}
+	if a.Gas == "" {
+		return NewErrorResponse("Create requires a 'gas' value as argument")
+	}
+	if a.GasPrice == "" {
+		return NewErrorResponse("Create requires a 'gasprice' value as argument")
+	}
+	if a.Body == "" {
+		return NewErrorResponse("Create requires a 'body' value as argument")
+	}
+	return nil
+}
+
+func (p *EthereumApi) Transact(args *NewTxArgs, reply *string) error {
+	err := args.requirements()
+	if err != nil {
+		return err
+	}
+	result, _ := p.pipe.Transact(p.pipe.Key().PrivateKey, args.Recipient, args.Value, args.Gas, args.GasPrice, args.Body)
+	*reply = NewSuccessRes(result)
+	return nil
+}
+
+func (p *EthereumApi) Create(args *NewTxArgs, reply *string) error {
+	err := args.requirementsContract()
+	if err != nil {
+		return err
+	}
+
+	result, _ := p.pipe.Transact(p.pipe.Key().PrivateKey, "", args.Value, args.Gas, args.GasPrice, args.Body)
+	*reply = NewSuccessRes(result)
+	return nil
+}
+
+type PushTxArgs struct {
+	Tx string
+}
+
+func (a *PushTxArgs) requirementsPushTx() error {
+	if a.Tx == "" {
+		return NewErrorResponse("PushTx requires a 'tx' as argument")
+	}
+	return nil
+}
+
+func (p *EthereumApi) PushTx(args *PushTxArgs, reply *string) error {
+	err := args.requirementsPushTx()
+	if err != nil {
+		return err
+	}
+	result, _ := p.pipe.PushTx(args.Tx)
+	*reply = NewSuccessRes(result)
+	return nil
+}
+
+func (p *EthereumApi) GetKey(args interface{}, reply *string) error {
+	*reply = NewSuccessRes(p.pipe.Key())
+	return nil
+}
+
+type GetStorageArgs struct {
+	Address string
+	Key     string
+}
+
+func (a *GetStorageArgs) requirements() error {
+	if a.Address == "" {
+		return NewErrorResponse("GetStorageAt requires an 'address' value as argument")
+	}
+	if a.Key == "" {
+		return NewErrorResponse("GetStorageAt requires an 'key' value as argument")
+	}
+	return nil
+}
+
+type GetStorageAtRes struct {
+	Key     string `json:"key"`
+	Value   string `json:"value"`
+	Address string `json:"address"`
+}
+
+func (p *EthereumApi) GetStorageAt(args *GetStorageArgs, reply *string) error {
+	err := args.requirements()
+	if err != nil {
+		return err
+	}
+
+	state := p.pipe.World().SafeGet(ethutil.Hex2Bytes(args.Address))
+
+	var hx string
+	if strings.Index(args.Key, "0x") == 0 {
+		hx = string([]byte(args.Key)[2:])
+	} else {
+		// Convert the incoming string (which is a bigint) into hex
+		i, _ := new(big.Int).SetString(args.Key, 10)
+		hx = ethutil.Bytes2Hex(i.Bytes())
+	}
+	jsonlogger.Debugf("GetStorageAt(%s, %s)\n", args.Address, hx)
+	value := state.Storage(ethutil.Hex2Bytes(hx))
+	*reply = NewSuccessRes(GetStorageAtRes{Address: args.Address, Key: args.Key, Value: value.Str()})
+	return nil
+}
+
+type GetTxCountArgs struct {
+	Address string `json:"address"`
+}
+type GetTxCountRes struct {
+	Nonce int `json:"nonce"`
+}
+
+func (a *GetTxCountArgs) requirements() error {
+	if a.Address == "" {
+		return NewErrorResponse("GetTxCountAt requires an 'address' value as argument")
+	}
+	return nil
+}
+
+type GetPeerCountRes struct {
+	PeerCount int `json:"peerCount"`
+}
+
+func (p *EthereumApi) GetPeerCount(args *interface{}, reply *string) error {
+	*reply = NewSuccessRes(GetPeerCountRes{PeerCount: p.pipe.PeerCount()})
+	return nil
+}
+
+type GetListeningRes struct {
+	IsListening bool `json:"isListening"`
+}
+
+func (p *EthereumApi) GetIsListening(args *interface{}, reply *string) error {
+	*reply = NewSuccessRes(GetListeningRes{IsListening: p.pipe.IsListening()})
+	return nil
+}
+
+type GetCoinbaseRes struct {
+	Coinbase string `json:"coinbase"`
+}
+
+func (p *EthereumApi) GetCoinbase(args *interface{}, reply *string) error {
+	*reply = NewSuccessRes(GetCoinbaseRes{Coinbase: p.pipe.CoinBase()})
+	return nil
+}
+
+type GetMiningRes struct {
+	IsMining bool `json:"isMining"`
+}
+
+func (p *EthereumApi) GetIsMining(args *interface{}, reply *string) error {
+	*reply = NewSuccessRes(GetMiningRes{IsMining: p.pipe.IsMining()})
+	return nil
+}
+
+func (p *EthereumApi) GetTxCountAt(args *GetTxCountArgs, reply *string) error {
+	err := args.requirements()
+	if err != nil {
+		return err
+	}
+	state := p.pipe.TxCountAt(args.Address)
+	*reply = NewSuccessRes(GetTxCountRes{Nonce: state})
+	return nil
+}
+
+type GetBalanceArgs struct {
+	Address string
+}
+
+func (a *GetBalanceArgs) requirements() error {
+	if a.Address == "" {
+		return NewErrorResponse("GetBalanceAt requires an 'address' value as argument")
+	}
+	return nil
+}
+
+type BalanceRes struct {
+	Balance string `json:"balance"`
+	Address string `json:"address"`
+}
+
+func (p *EthereumApi) GetBalanceAt(args *GetBalanceArgs, reply *string) error {
+	err := args.requirements()
+	if err != nil {
+		return err
+	}
+	state := p.pipe.World().SafeGet(ethutil.Hex2Bytes(args.Address))
+	*reply = NewSuccessRes(BalanceRes{Balance: state.Balance().String(), Address: args.Address})
+	return nil
+}
+
+type TestRes struct {
+	JsonResponse `json:"-"`
+	Answer       int `json:"answer"`
+}
+
+func (p *EthereumApi) Test(args *GetBlockArgs, reply *string) error {
+	*reply = NewSuccessRes(TestRes{Answer: 15})
+	return nil
+}
diff --git a/rpc/server.go b/rpc/server.go
new file mode 100644
index 000000000..983dc6c33
--- /dev/null
+++ b/rpc/server.go
@@ -0,0 +1,67 @@
+package rpc
+
+import (
+	"fmt"
+	"net"
+	"net/rpc"
+	"net/rpc/jsonrpc"
+
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/xeth"
+)
+
+var jsonlogger = logger.NewLogger("JSON")
+
+type JsonRpcServer struct {
+	quit     chan bool
+	listener net.Listener
+	pipe     *xeth.JSXEth
+}
+
+func (s *JsonRpcServer) exitHandler() {
+out:
+	for {
+		select {
+		case <-s.quit:
+			s.listener.Close()
+			break out
+		}
+	}
+
+	jsonlogger.Infoln("Shutdown JSON-RPC server")
+}
+
+func (s *JsonRpcServer) Stop() {
+	close(s.quit)
+}
+
+func (s *JsonRpcServer) Start() {
+	jsonlogger.Infoln("Starting JSON-RPC server")
+	go s.exitHandler()
+	rpc.Register(&EthereumApi{pipe: s.pipe})
+	rpc.HandleHTTP()
+
+	for {
+		conn, err := s.listener.Accept()
+		if err != nil {
+			jsonlogger.Infoln("Error starting JSON-RPC:", err)
+			break
+		}
+		jsonlogger.Debugln("Incoming request.")
+		go jsonrpc.ServeConn(conn)
+	}
+}
+
+func NewJsonRpcServer(pipe *xeth.JSXEth, port int) (*JsonRpcServer, error) {
+	sport := fmt.Sprintf(":%d", port)
+	l, err := net.Listen("tcp", sport)
+	if err != nil {
+		return nil, err
+	}
+
+	return &JsonRpcServer{
+		listener: l,
+		quit:     make(chan bool),
+		pipe:     pipe,
+	}, nil
+}
diff --git a/rpc/writer.go b/rpc/writer.go
new file mode 100644
index 000000000..4cc39f577
--- /dev/null
+++ b/rpc/writer.go
@@ -0,0 +1,75 @@
+package rpc
+
+/*
+func pack(id int, v ...interface{}) Message {
+	return Message{Data: v, Id: id}
+}
+
+func WriteOn(msg *Message, writer io.Writer) {
+	//msg := &Message{Seed: seed, Data: data}
+
+	switch msg.Call {
+	case "compile":
+		data := ethutil.NewValue(msg.Args)
+		bcode, err := ethutil.Compile(data.Get(0).Str(), false)
+		if err != nil {
+			JSON.Send(writer, pack(msg.Id, err.Error()))
+		}
+
+		code := ethutil.Bytes2Hex(bcode)
+
+		JSON.Send(writer, pack(msg.Id, code, nil))
+	case "block":
+		args := msg.Arguments()
+
+		block := pipe.BlockByNumber(int32(args.Get(0).Uint()))
+
+		JSON.Send(writer, pack(msg.Id, block))
+	case "transact":
+		if mp, ok := msg.Args[0].(map[string]interface{}); ok {
+			object := mapToTxParams(mp)
+			JSON.Send(
+				writer,
+				pack(msg.Id, args(pipe.Transact(object["from"], object["to"], object["value"], object["gas"], object["gasPrice"], object["data"]))),
+			)
+
+		}
+	case "coinbase":
+		JSON.Send(writer, pack(msg.Id, pipe.CoinBase(), msg.Seed))
+
+	case "listening":
+		JSON.Send(writer, pack(msg.Id, pipe.IsListening()))
+
+	case "mining":
+		JSON.Send(writer, pack(msg.Id, pipe.IsMining()))
+
+	case "peerCoint":
+		JSON.Send(writer, pack(msg.Id, pipe.PeerCount()))
+
+	case "countAt":
+		args := msg.Arguments()
+
+		JSON.Send(writer, pack(msg.Id, pipe.TxCountAt(args.Get(0).Str())))
+
+	case "codeAt":
+		args := msg.Arguments()
+
+		JSON.Send(writer, pack(msg.Id, len(pipe.CodeAt(args.Get(0).Str()))))
+
+	case "stateAt":
+		args := msg.Arguments()
+
+		JSON.Send(writer, pack(msg.Id, pipe.StorageAt(args.Get(0).Str(), args.Get(1).Str())))
+
+	case "balanceAt":
+		args := msg.Arguments()
+
+		JSON.Send(writer, pack(msg.Id, pipe.BalanceAt(args.Get(0).Str())))
+
+	case "newFilter":
+	case "newFilterString":
+	case "messages":
+		// TODO
+	}
+}
+*/
diff --git a/state/dump.go b/state/dump.go
new file mode 100644
index 000000000..c1f5ecf3a
--- /dev/null
+++ b/state/dump.go
@@ -0,0 +1,56 @@
+package state
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+type Account struct {
+	Balance  string            `json:"balance"`
+	Nonce    uint64            `json:"nonce"`
+	Root     string            `json:"root"`
+	CodeHash string            `json:"codeHash"`
+	Storage  map[string]string `json:"storage"`
+}
+
+type World struct {
+	Root     string             `json:"root"`
+	Accounts map[string]Account `json:"accounts"`
+}
+
+func (self *StateDB) Dump() []byte {
+	world := World{
+		Root:     ethutil.Bytes2Hex(self.Trie.GetRoot()),
+		Accounts: make(map[string]Account),
+	}
+
+	self.Trie.NewIterator().Each(func(key string, value *ethutil.Value) {
+		stateObject := NewStateObjectFromBytes([]byte(key), value.Bytes())
+
+		account := Account{Balance: stateObject.balance.String(), Nonce: stateObject.Nonce, Root: ethutil.Bytes2Hex(stateObject.Root()), CodeHash: ethutil.Bytes2Hex(stateObject.codeHash)}
+		account.Storage = make(map[string]string)
+
+		stateObject.EachStorage(func(key string, value *ethutil.Value) {
+			value.Decode()
+			account.Storage[ethutil.Bytes2Hex([]byte(key))] = ethutil.Bytes2Hex(value.Bytes())
+		})
+		world.Accounts[ethutil.Bytes2Hex([]byte(key))] = account
+	})
+
+	json, err := json.MarshalIndent(world, "", "    ")
+	if err != nil {
+		fmt.Println("dump err", err)
+	}
+
+	return json
+}
+
+// Debug stuff
+func (self *StateObject) CreateOutputForDiff() {
+	fmt.Printf("%x %x %x %x\n", self.Address(), self.State.Root(), self.balance.Bytes(), self.Nonce)
+	self.EachStorage(func(addr string, value *ethutil.Value) {
+		fmt.Printf("%x %x\n", addr, value.Bytes())
+	})
+}
diff --git a/state/errors.go b/state/errors.go
new file mode 100644
index 000000000..5a847d38b
--- /dev/null
+++ b/state/errors.go
@@ -0,0 +1,23 @@
+package state
+
+import (
+	"fmt"
+	"math/big"
+)
+
+type GasLimitErr struct {
+	Message string
+	Is, Max *big.Int
+}
+
+func IsGasLimitErr(err error) bool {
+	_, ok := err.(*GasLimitErr)
+
+	return ok
+}
+func (err *GasLimitErr) Error() string {
+	return err.Message
+}
+func GasLimitError(is, max *big.Int) *GasLimitErr {
+	return &GasLimitErr{Message: fmt.Sprintf("GasLimit error. Max %s, transaction would take it to %s", max, is), Is: is, Max: max}
+}
diff --git a/state/log.go b/state/log.go
new file mode 100644
index 000000000..46360f4aa
--- /dev/null
+++ b/state/log.go
@@ -0,0 +1,78 @@
+package state
+
+import (
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+type Log interface {
+	ethutil.RlpEncodable
+
+	Address() []byte
+	Topics() [][]byte
+	Data() []byte
+}
+
+type StateLog struct {
+	address []byte
+	topics  [][]byte
+	data    []byte
+}
+
+func NewLog(address []byte, topics [][]byte, data []byte) *StateLog {
+	return &StateLog{address, topics, data}
+}
+
+func (self *StateLog) Address() []byte {
+	return self.address
+}
+
+func (self *StateLog) Topics() [][]byte {
+	return self.topics
+}
+
+func (self *StateLog) Data() []byte {
+	return self.data
+}
+
+func NewLogFromValue(decoder *ethutil.Value) *StateLog {
+	log := &StateLog{
+		address: decoder.Get(0).Bytes(),
+		data:    decoder.Get(2).Bytes(),
+	}
+
+	it := decoder.Get(1).NewIterator()
+	for it.Next() {
+		log.topics = append(log.topics, it.Value().Bytes())
+	}
+
+	return log
+}
+
+func (self *StateLog) RlpData() interface{} {
+	return []interface{}{self.address, ethutil.ByteSliceToInterface(self.topics), self.data}
+}
+
+func (self *StateLog) String() string {
+	return fmt.Sprintf(`log: %x %x %x`, self.address, self.topics, self.data)
+}
+
+type Logs []Log
+
+func (self Logs) RlpData() interface{} {
+	data := make([]interface{}, len(self))
+	for i, log := range self {
+		data[i] = log.RlpData()
+	}
+
+	return data
+}
+
+func (self Logs) String() (ret string) {
+	for _, log := range self {
+		ret += fmt.Sprintf("%v", log)
+	}
+
+	return "[" + ret + "]"
+}
diff --git a/state/main_test.go b/state/main_test.go
new file mode 100644
index 000000000..f3d3f7e23
--- /dev/null
+++ b/state/main_test.go
@@ -0,0 +1,9 @@
+package state
+
+import (
+	"testing"
+
+	checker "gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) { checker.TestingT(t) }
diff --git a/state/manifest.go b/state/manifest.go
new file mode 100644
index 000000000..21cd04a1a
--- /dev/null
+++ b/state/manifest.go
@@ -0,0 +1,55 @@
+package state
+
+import (
+	"fmt"
+	"math/big"
+)
+
+// Object manifest
+//
+// The object manifest is used to keep changes to the state so we can keep track of the changes
+// that occurred during a state transitioning phase.
+type Manifest struct {
+	Messages Messages
+}
+
+func NewManifest() *Manifest {
+	m := &Manifest{}
+	m.Reset()
+
+	return m
+}
+
+func (m *Manifest) Reset() {
+	m.Messages = nil
+}
+
+func (self *Manifest) AddMessage(msg *Message) *Message {
+	self.Messages = append(self.Messages, msg)
+
+	return msg
+}
+
+type Messages []*Message
+type Message struct {
+	To, From  []byte
+	Input     []byte
+	Output    []byte
+	Path      int
+	Origin    []byte
+	Timestamp int64
+	Coinbase  []byte
+	Block     []byte
+	Number    *big.Int
+	Value     *big.Int
+
+	ChangedAddresses [][]byte
+}
+
+func (self *Message) AddStorageChange(addr []byte) {
+	self.ChangedAddresses = append(self.ChangedAddresses, addr)
+}
+
+func (self *Message) String() string {
+	return fmt.Sprintf("Message{to: %x from: %x input: %x output: %x origin: %x coinbase: %x block: %x number: %v timestamp: %d path: %d value: %v", self.To, self.From, self.Input, self.Output, self.Origin, self.Coinbase, self.Block, self.Number, self.Timestamp, self.Path, self.Value)
+}
diff --git a/state/state.go b/state/state.go
new file mode 100644
index 000000000..f77da72f0
--- /dev/null
+++ b/state/state.go
@@ -0,0 +1,325 @@
+package state
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/trie"
+)
+
+var statelogger = logger.NewLogger("STATE")
+
+// StateDBs within the ethereum protocol are used to store anything
+// within the merkle trie. StateDBs take care of caching and storing
+// nested states. It's the general query interface to retrieve:
+// * Contracts
+// * Accounts
+type StateDB struct {
+	// The trie for this structure
+	Trie *trie.Trie
+
+	stateObjects map[string]*StateObject
+
+	manifest *Manifest
+
+	refund map[string]*big.Int
+
+	logs Logs
+}
+
+// Create a new state from a given trie
+func New(trie *trie.Trie) *StateDB {
+	return &StateDB{Trie: trie, stateObjects: make(map[string]*StateObject), manifest: NewManifest(), refund: make(map[string]*big.Int)}
+}
+
+func (self *StateDB) EmptyLogs() {
+	self.logs = nil
+}
+
+func (self *StateDB) AddLog(log Log) {
+	self.logs = append(self.logs, log)
+}
+
+func (self *StateDB) Logs() Logs {
+	return self.logs
+}
+
+// Retrieve the balance from the given address or 0 if object not found
+func (self *StateDB) GetBalance(addr []byte) *big.Int {
+	stateObject := self.GetStateObject(addr)
+	if stateObject != nil {
+		return stateObject.balance
+	}
+
+	return ethutil.Big0
+}
+
+func (self *StateDB) Refund(addr []byte, gas *big.Int) {
+	if self.refund[string(addr)] == nil {
+		self.refund[string(addr)] = new(big.Int)
+	}
+	self.refund[string(addr)].Add(self.refund[string(addr)], gas)
+}
+
+func (self *StateDB) AddBalance(addr []byte, amount *big.Int) {
+	stateObject := self.GetStateObject(addr)
+	if stateObject != nil {
+		stateObject.AddBalance(amount)
+	}
+}
+
+func (self *StateDB) GetNonce(addr []byte) uint64 {
+	stateObject := self.GetStateObject(addr)
+	if stateObject != nil {
+		return stateObject.Nonce
+	}
+
+	return 0
+}
+
+func (self *StateDB) SetNonce(addr []byte, nonce uint64) {
+	stateObject := self.GetStateObject(addr)
+	if stateObject != nil {
+		stateObject.Nonce = nonce
+	}
+}
+
+func (self *StateDB) GetCode(addr []byte) []byte {
+	stateObject := self.GetStateObject(addr)
+	if stateObject != nil {
+		return stateObject.Code
+	}
+
+	return nil
+}
+
+func (self *StateDB) SetCode(addr, code []byte) {
+	stateObject := self.GetStateObject(addr)
+	if stateObject != nil {
+		stateObject.SetCode(code)
+	}
+}
+
+func (self *StateDB) GetState(a, b []byte) []byte {
+	stateObject := self.GetStateObject(a)
+	if stateObject != nil {
+		return stateObject.GetState(b).Bytes()
+	}
+
+	return nil
+}
+
+func (self *StateDB) SetState(addr, key []byte, value interface{}) {
+	stateObject := self.GetStateObject(addr)
+	if stateObject != nil {
+		stateObject.SetState(key, ethutil.NewValue(value))
+	}
+}
+
+func (self *StateDB) Delete(addr []byte) bool {
+	stateObject := self.GetStateObject(addr)
+	if stateObject != nil {
+		stateObject.MarkForDeletion()
+
+		return true
+	}
+
+	return false
+}
+
+//
+// Setting, updating & deleting state object methods
+//
+
+// Update the given state object and apply it to state trie
+func (self *StateDB) UpdateStateObject(stateObject *StateObject) {
+	addr := stateObject.Address()
+
+	if len(stateObject.CodeHash()) > 0 {
+		ethutil.Config.Db.Put(stateObject.CodeHash(), stateObject.Code)
+	}
+
+	self.Trie.Update(string(addr), string(stateObject.RlpEncode()))
+}
+
+// Delete the given state object and delete it from the state trie
+func (self *StateDB) DeleteStateObject(stateObject *StateObject) {
+	self.Trie.Delete(string(stateObject.Address()))
+
+	delete(self.stateObjects, string(stateObject.Address()))
+}
+
+// Retrieve a state object given my the address. Nil if not found
+func (self *StateDB) GetStateObject(addr []byte) *StateObject {
+	addr = ethutil.Address(addr)
+
+	stateObject := self.stateObjects[string(addr)]
+	if stateObject != nil {
+		return stateObject
+	}
+
+	data := self.Trie.Get(string(addr))
+	if len(data) == 0 {
+		return nil
+	}
+
+	stateObject = NewStateObjectFromBytes(addr, []byte(data))
+	self.SetStateObject(stateObject)
+
+	return stateObject
+}
+
+func (self *StateDB) SetStateObject(object *StateObject) {
+	self.stateObjects[string(object.address)] = object
+}
+
+// Retrieve a state object or create a new state object if nil
+func (self *StateDB) GetOrNewStateObject(addr []byte) *StateObject {
+	stateObject := self.GetStateObject(addr)
+	if stateObject == nil {
+		stateObject = self.NewStateObject(addr)
+	}
+
+	return stateObject
+}
+
+// Create a state object whether it exist in the trie or not
+func (self *StateDB) NewStateObject(addr []byte) *StateObject {
+	addr = ethutil.Address(addr)
+
+	statelogger.Debugf("(+) %x\n", addr)
+
+	stateObject := NewStateObject(addr)
+	self.stateObjects[string(addr)] = stateObject
+
+	return stateObject
+}
+
+// Deprecated
+func (self *StateDB) GetAccount(addr []byte) *StateObject {
+	return self.GetOrNewStateObject(addr)
+}
+
+//
+// Setting, copying of the state methods
+//
+
+func (s *StateDB) Cmp(other *StateDB) bool {
+	return s.Trie.Cmp(other.Trie)
+}
+
+func (self *StateDB) Copy() *StateDB {
+	if self.Trie != nil {
+		state := New(self.Trie.Copy())
+		for k, stateObject := range self.stateObjects {
+			state.stateObjects[k] = stateObject.Copy()
+		}
+
+		for addr, refund := range self.refund {
+			state.refund[addr] = new(big.Int).Set(refund)
+		}
+
+		logs := make(Logs, len(self.logs))
+		copy(logs, self.logs)
+		state.logs = logs
+
+		return state
+	}
+
+	return nil
+}
+
+func (self *StateDB) Set(state *StateDB) {
+	if state == nil {
+		panic("Tried setting 'state' to nil through 'Set'")
+	}
+
+	self.Trie = state.Trie
+	self.stateObjects = state.stateObjects
+	self.refund = state.refund
+	self.logs = state.logs
+}
+
+func (s *StateDB) Root() []byte {
+	return s.Trie.GetRoot()
+}
+
+// Resets the trie and all siblings
+func (s *StateDB) Reset() {
+	s.Trie.Undo()
+
+	// Reset all nested states
+	for _, stateObject := range s.stateObjects {
+		if stateObject.State == nil {
+			continue
+		}
+
+		stateObject.Reset()
+	}
+
+	s.Empty()
+}
+
+// Syncs the trie and all siblings
+func (s *StateDB) Sync() {
+	// Sync all nested states
+	for _, stateObject := range s.stateObjects {
+		if stateObject.State == nil {
+			continue
+		}
+
+		stateObject.State.Sync()
+	}
+
+	s.Trie.Sync()
+
+	s.Empty()
+}
+
+func (self *StateDB) Empty() {
+	self.stateObjects = make(map[string]*StateObject)
+	self.refund = make(map[string]*big.Int)
+}
+
+func (self *StateDB) Refunds() map[string]*big.Int {
+	return self.refund
+}
+
+func (self *StateDB) Update(gasUsed *big.Int) {
+	var deleted bool
+
+	self.refund = make(map[string]*big.Int)
+
+	for _, stateObject := range self.stateObjects {
+		if stateObject.remove {
+			self.DeleteStateObject(stateObject)
+			deleted = true
+		} else {
+			stateObject.Sync()
+
+			self.UpdateStateObject(stateObject)
+		}
+	}
+
+	// FIXME trie delete is broken
+	if deleted {
+		valid, t2 := trie.ParanoiaCheck(self.Trie)
+		if !valid {
+			statelogger.Infof("Warn: PARANOIA: Different state root during copy %x vs %x\n", self.Trie.GetRoot(), t2.GetRoot())
+
+			self.Trie = t2
+		}
+	}
+}
+
+func (self *StateDB) Manifest() *Manifest {
+	return self.manifest
+}
+
+// Debug stuff
+func (self *StateDB) CreateOutputForDiff() {
+	for _, stateObject := range self.stateObjects {
+		stateObject.CreateOutputForDiff()
+	}
+}
diff --git a/state/state_object.go b/state/state_object.go
new file mode 100644
index 000000000..b8af4e702
--- /dev/null
+++ b/state/state_object.go
@@ -0,0 +1,320 @@
+package state
+
+import (
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/trie"
+)
+
+type Code []byte
+
+func (self Code) String() string {
+	return string(self) //strings.Join(Disassemble(self), " ")
+}
+
+type Storage map[string]*ethutil.Value
+
+func (self Storage) Copy() Storage {
+	cpy := make(Storage)
+	for key, value := range self {
+		// XXX Do we need a 'value' copy or is this sufficient?
+		cpy[key] = value
+	}
+
+	return cpy
+}
+
+type StateObject struct {
+	// Address of the object
+	address []byte
+	// Shared attributes
+	balance  *big.Int
+	codeHash []byte
+	Nonce    uint64
+	// Contract related attributes
+	State    *StateDB
+	Code     Code
+	InitCode Code
+
+	storage Storage
+
+	// Total gas pool is the total amount of gas currently
+	// left if this object is the coinbase. Gas is directly
+	// purchased of the coinbase.
+	gasPool *big.Int
+
+	// Mark for deletion
+	// When an object is marked for deletion it will be delete from the trie
+	// during the "update" phase of the state transition
+	remove bool
+}
+
+func (self *StateObject) Reset() {
+	self.storage = make(Storage)
+	self.State.Reset()
+}
+
+func NewStateObject(addr []byte) *StateObject {
+	// This to ensure that it has 20 bytes (and not 0 bytes), thus left or right pad doesn't matter.
+	address := ethutil.Address(addr)
+
+	object := &StateObject{address: address, balance: new(big.Int), gasPool: new(big.Int)}
+	object.State = New(trie.New(ethutil.Config.Db, ""))
+	object.storage = make(Storage)
+	object.gasPool = new(big.Int)
+
+	return object
+}
+
+func NewContract(address []byte, balance *big.Int, root []byte) *StateObject {
+	contract := NewStateObject(address)
+	contract.balance = balance
+	contract.State = New(trie.New(ethutil.Config.Db, string(root)))
+
+	return contract
+}
+
+func NewStateObjectFromBytes(address, data []byte) *StateObject {
+	object := &StateObject{address: address}
+	object.RlpDecode(data)
+
+	return object
+}
+
+func (self *StateObject) MarkForDeletion() {
+	self.remove = true
+	statelogger.DebugDetailf("%x: #%d %v (deletion)\n", self.Address(), self.Nonce, self.balance)
+}
+
+func (c *StateObject) GetAddr(addr []byte) *ethutil.Value {
+	return ethutil.NewValueFromBytes([]byte(c.State.Trie.Get(string(addr))))
+}
+
+func (c *StateObject) SetAddr(addr []byte, value interface{}) {
+	c.State.Trie.Update(string(addr), string(ethutil.NewValue(value).Encode()))
+}
+
+func (self *StateObject) GetStorage(key *big.Int) *ethutil.Value {
+	return self.GetState(key.Bytes())
+}
+func (self *StateObject) SetStorage(key *big.Int, value *ethutil.Value) {
+	self.SetState(key.Bytes(), value)
+}
+
+func (self *StateObject) Storage() map[string]*ethutil.Value {
+	return self.storage
+}
+
+func (self *StateObject) GetState(k []byte) *ethutil.Value {
+	key := ethutil.LeftPadBytes(k, 32)
+
+	value := self.storage[string(key)]
+	if value == nil {
+		value = self.GetAddr(key)
+
+		if !value.IsNil() {
+			self.storage[string(key)] = value
+		}
+	}
+
+	return value
+}
+
+func (self *StateObject) SetState(k []byte, value *ethutil.Value) {
+	key := ethutil.LeftPadBytes(k, 32)
+	self.storage[string(key)] = value.Copy()
+}
+
+// Iterate over each storage address and yield callback
+func (self *StateObject) EachStorage(cb trie.EachCallback) {
+	// First loop over the uncommit/cached values in storage
+	for key, value := range self.storage {
+		// XXX Most iterators Fns as it stands require encoded values
+		encoded := ethutil.NewValue(value.Encode())
+		cb(key, encoded)
+	}
+
+	it := self.State.Trie.NewIterator()
+	it.Each(func(key string, value *ethutil.Value) {
+		// If it's cached don't call the callback.
+		if self.storage[key] == nil {
+			cb(key, value)
+		}
+	})
+}
+
+func (self *StateObject) Sync() {
+	for key, value := range self.storage {
+		if value.Len() == 0 {
+			self.State.Trie.Delete(string(key))
+			continue
+		}
+
+		self.SetAddr([]byte(key), value)
+	}
+
+	valid, t2 := trie.ParanoiaCheck(self.State.Trie)
+	if !valid {
+		statelogger.Infof("Warn: PARANOIA: Different state storage root during copy %x vs %x\n", self.State.Root(), t2.GetRoot())
+
+		self.State.Trie = t2
+	}
+}
+
+func (c *StateObject) GetInstr(pc *big.Int) *ethutil.Value {
+	if int64(len(c.Code)-1) < pc.Int64() {
+		return ethutil.NewValue(0)
+	}
+
+	return ethutil.NewValueFromBytes([]byte{c.Code[pc.Int64()]})
+}
+
+func (c *StateObject) AddBalance(amount *big.Int) {
+	c.SetBalance(new(big.Int).Add(c.balance, amount))
+
+	statelogger.Debugf("%x: #%d %v (+ %v)\n", c.Address(), c.Nonce, c.balance, amount)
+}
+func (c *StateObject) AddAmount(amount *big.Int) { c.AddBalance(amount) }
+
+func (c *StateObject) SubBalance(amount *big.Int) {
+	c.SetBalance(new(big.Int).Sub(c.balance, amount))
+
+	statelogger.Debugf("%x: #%d %v (- %v)\n", c.Address(), c.Nonce, c.balance, amount)
+}
+func (c *StateObject) SubAmount(amount *big.Int) { c.SubBalance(amount) }
+
+func (c *StateObject) SetBalance(amount *big.Int) {
+	c.balance = amount
+}
+
+func (self *StateObject) Balance() *big.Int { return self.balance }
+
+//
+// Gas setters and getters
+//
+
+// Return the gas back to the origin. Used by the Virtual machine or Closures
+func (c *StateObject) ReturnGas(gas, price *big.Int) {}
+func (c *StateObject) ConvertGas(gas, price *big.Int) error {
+	total := new(big.Int).Mul(gas, price)
+	if total.Cmp(c.balance) > 0 {
+		return fmt.Errorf("insufficient amount: %v, %v", c.balance, total)
+	}
+
+	c.SubAmount(total)
+
+	return nil
+}
+
+func (self *StateObject) SetGasPool(gasLimit *big.Int) {
+	self.gasPool = new(big.Int).Set(gasLimit)
+
+	statelogger.Debugf("%x: gas (+ %v)", self.Address(), self.gasPool)
+}
+
+func (self *StateObject) BuyGas(gas, price *big.Int) error {
+	if self.gasPool.Cmp(gas) < 0 {
+		return GasLimitError(self.gasPool, gas)
+	}
+
+	rGas := new(big.Int).Set(gas)
+	rGas.Mul(rGas, price)
+
+	self.AddAmount(rGas)
+
+	return nil
+}
+
+func (self *StateObject) RefundGas(gas, price *big.Int) {
+	self.gasPool.Add(self.gasPool, gas)
+
+	rGas := new(big.Int).Set(gas)
+	rGas.Mul(rGas, price)
+
+	self.balance.Sub(self.balance, rGas)
+}
+
+func (self *StateObject) Copy() *StateObject {
+	stateObject := NewStateObject(self.Address())
+	stateObject.balance.Set(self.balance)
+	stateObject.codeHash = ethutil.CopyBytes(self.codeHash)
+	stateObject.Nonce = self.Nonce
+	if self.State != nil {
+		stateObject.State = self.State.Copy()
+	}
+	stateObject.Code = ethutil.CopyBytes(self.Code)
+	stateObject.InitCode = ethutil.CopyBytes(self.InitCode)
+	stateObject.storage = self.storage.Copy()
+	stateObject.gasPool.Set(self.gasPool)
+	stateObject.remove = self.remove
+
+	return stateObject
+}
+
+func (self *StateObject) Set(stateObject *StateObject) {
+	*self = *stateObject
+}
+
+//
+// Attribute accessors
+//
+
+func (c *StateObject) N() *big.Int {
+	return big.NewInt(int64(c.Nonce))
+}
+
+// Returns the address of the contract/account
+func (c *StateObject) Address() []byte {
+	return c.address
+}
+
+// Returns the initialization Code
+func (c *StateObject) Init() Code {
+	return c.InitCode
+}
+
+func (self *StateObject) Root() []byte {
+	return self.State.Trie.GetRoot()
+}
+
+func (self *StateObject) SetCode(code []byte) {
+	self.Code = code
+}
+
+//
+// Encoding
+//
+
+// State object encoding methods
+func (c *StateObject) RlpEncode() []byte {
+	return ethutil.Encode([]interface{}{c.Nonce, c.balance, c.Root(), c.CodeHash()})
+}
+
+func (c *StateObject) CodeHash() ethutil.Bytes {
+	return crypto.Sha3(c.Code)
+}
+
+func (c *StateObject) RlpDecode(data []byte) {
+	decoder := ethutil.NewValueFromBytes(data)
+
+	c.Nonce = decoder.Get(0).Uint()
+	c.balance = decoder.Get(1).BigInt()
+	c.State = New(trie.New(ethutil.Config.Db, decoder.Get(2).Interface()))
+	c.storage = make(map[string]*ethutil.Value)
+	c.gasPool = new(big.Int)
+
+	c.codeHash = decoder.Get(3).Bytes()
+
+	c.Code, _ = ethutil.Config.Db.Get(c.codeHash)
+}
+
+// Storage change object. Used by the manifest for notifying changes to
+// the sub channels.
+type StorageState struct {
+	StateAddress []byte
+	Address      []byte
+	Value        *big.Int
+}
diff --git a/state/state_test.go b/state/state_test.go
new file mode 100644
index 000000000..28e4fc5da
--- /dev/null
+++ b/state/state_test.go
@@ -0,0 +1,61 @@
+package state
+
+import (
+	checker "gopkg.in/check.v1"
+
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/trie"
+)
+
+type StateSuite struct {
+	state *StateDB
+}
+
+var _ = checker.Suite(&StateSuite{})
+
+// var ZeroHash256 = make([]byte, 32)
+
+func (s *StateSuite) TestDump(c *checker.C) {
+	key := []byte{0x01}
+	value := "foo"
+	node := []interface{}{key, value}
+	s.state.Trie.Put(node)
+	dump := s.state.Dump()
+	c.Assert(dump, checker.NotNil)
+}
+
+func (s *StateSuite) SetUpTest(c *checker.C) {
+	db, _ := ethdb.NewMemDatabase()
+	ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
+	ethutil.Config.Db = db
+	s.state = New(trie.New(db, ""))
+}
+
+func (s *StateSuite) TestSnapshot(c *checker.C) {
+	stateobjaddr := []byte("aa")
+	storageaddr := ethutil.Big("0")
+	data1 := ethutil.NewValue(42)
+	data2 := ethutil.NewValue(43)
+
+	// get state object
+	stateObject := s.state.GetOrNewStateObject(stateobjaddr)
+	// set inital state object value
+	stateObject.SetStorage(storageaddr, data1)
+	// get snapshot of current state
+	snapshot := s.state.Copy()
+
+	// get state object. is this strictly necessary?
+	stateObject = s.state.GetStateObject(stateobjaddr)
+	// set new state object value
+	stateObject.SetStorage(storageaddr, data2)
+	// restore snapshot
+	s.state.Set(snapshot)
+
+	// get state object
+	stateObject = s.state.GetStateObject(stateobjaddr)
+	// get state storage value
+	res := stateObject.GetStorage(storageaddr)
+
+	c.Assert(data1, checker.DeepEquals, res)
+}
diff --git a/tests/files/BasicTests/blockgenesistest.json b/tests/files/BasicTests/blockgenesistest.json
new file mode 100644
index 000000000..8ad5590f1
--- /dev/null
+++ b/tests/files/BasicTests/blockgenesistest.json
@@ -0,0 +1,20 @@
+[
+    {
+        "inputs": {
+        },
+        "result": "f892f88ea00000000000000000000000000000000000000000000000000000000000000000a01dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d493479400000000000000000000000000000000000000008080834000008087038d7ea4c68000830f4240808080a004994f67dc55b09e814ab7ffc8df3686b4afb2bb53e60eae97ef043fe03fb829c0c0"
+    },
+    {
+        "inputs": {
+            "cd2a3d9f938e13cd947ec05abc7fe734df8dd826": 100000000000000000000
+        },
+        "result": "f8b2f8aea00000000000000000000000000000000000000000000000000000000000000000a01dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347940000000000000000000000000000000000000000a05e5b074eca68ed6f5cf3ef14712b7c97f431a41deff21e3f211cf687f618026780834000008087038d7ea4c68000830f4240808080a004994f67dc55b09e814ab7ffc8df3686b4afb2bb53e60eae97ef043fe03fb829c0c0"
+    },
+    {
+        "inputs": {
+            "cd2a3d9f938e13cd947ec05abc7fe734df8dd826": 99000000000000000000,
+            "13978aee95f38490e9769c39b2773ed763d9cd5f": 1000000000000000000
+        },
+        "result": "f8b2f8aea00000000000000000000000000000000000000000000000000000000000000000a01dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347940000000000000000000000000000000000000000a0b1062e564d1bdb302a2feae46e837fef59c4f8a408967009dcc48327d80d8fff80834000008087038d7ea4c68000830f4240808080a004994f67dc55b09e814ab7ffc8df3686b4afb2bb53e60eae97ef043fe03fb829c0c0"
+    }
+]
diff --git a/tests/files/BasicTests/genesishashestest.json b/tests/files/BasicTests/genesishashestest.json
new file mode 100644
index 000000000..ba733e36e
--- /dev/null
+++ b/tests/files/BasicTests/genesishashestest.json
@@ -0,0 +1,15 @@
+{
+    "genesis_rlp_hex": "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",
+    "genesis_state_root": "c67c70f5d7d3049337d1dcc0503a249881120019a8e7322774dbfe57b463718c",
+    "initial_alloc": {
+        "51ba59315b3a95761d0863b05ccc7a7f54703d99": "1606938044258990275541962092341162602522202993782792835301376",
+        "e4157b34ea9615cfbde6b4fda419828124b70c78": "1606938044258990275541962092341162602522202993782792835301376",
+        "b9c015918bdaba24b4ff057a92a3873d6eb201be": "1606938044258990275541962092341162602522202993782792835301376",
+        "6c386a4b26f73c802f34673f7248bb118f97424a": "1606938044258990275541962092341162602522202993782792835301376",
+        "cd2a3d9f938e13cd947ec05abc7fe734df8dd826": "1606938044258990275541962092341162602522202993782792835301376",
+        "2ef47100e0787b915105fd5e3f4ff6752079d5cb": "1606938044258990275541962092341162602522202993782792835301376",
+        "e6716f9544a56c530d868e4bfbacb172315bdead": "1606938044258990275541962092341162602522202993782792835301376",
+        "1a26338f0d905e295fccb71fa9ea849ffa12aaf4": "1606938044258990275541962092341162602522202993782792835301376"
+    },
+    "genesis_hash": "779b1b620b03c0fb24963e183d5e88e3dbe4484e3f6e2aa05942e3be7b48e179"
+}
diff --git a/tests/files/BasicTests/hexencodetest.json b/tests/files/BasicTests/hexencodetest.json
new file mode 100644
index 000000000..26c5bc7ed
--- /dev/null
+++ b/tests/files/BasicTests/hexencodetest.json
@@ -0,0 +1,62 @@
+{
+	"zz,odd,open": {
+		"seq": [ 0, 0, 1, 2, 3, 4, 5 ],
+		"term": false,
+		"out": "10012345"
+	},
+	"z,even,open": {
+	  "seq": [ 0, 1, 2, 3, 4, 5 ],
+	  "term": false,
+	  "out": "00012345"
+	},
+	"nz,odd,open": {
+		"seq": [ 1, 2, 3, 4, 5 ],
+		"term": false,
+		"out": "112345"
+	},
+	"zz,even,open": {
+		"seq": [ 0, 0, 1, 2, 3, 4 ],
+		"term": false,
+		"out": "00001234"
+	},
+	"z,odd,open": {
+	  "seq": [ 0, 1, 2, 3, 4 ],
+	  "term": false,
+	  "out": "101234"
+	},
+	"nz,even,open": {
+		"seq": [ 1, 2, 3, 4 ],
+		"term": false,
+		"out": "001234"
+	},
+	"zz,odd,term": {
+		"seq": [ 0, 0, 1, 2, 3, 4, 5 ],
+		"term": true,
+		"out": "30012345"
+	},
+	"z,even,term": {
+	  "seq": [ 0, 1, 2, 3, 4, 5 ],
+	  "term": true,
+	  "out": "20012345"
+	},
+	"nz,odd,term": {
+		"seq": [ 1, 2, 3, 4, 5 ],
+		"term": true,
+		"out": "312345"
+	},
+	"zz,even,term": {
+		"seq": [ 0, 0, 1, 2, 3, 4 ],
+		"term": true,
+		"out": "20001234"
+	},
+	"z,odd,term": {
+	  "seq": [ 0, 1, 2, 3, 4 ],
+	  "term": true,
+	  "out": "301234"
+	},
+	"nz,even,term": {
+		"seq": [ 1, 2, 3, 4 ],
+		"term": true,
+		"out": "201234"
+	}
+}
diff --git a/tests/files/BasicTests/keyaddrtest.json b/tests/files/BasicTests/keyaddrtest.json
new file mode 100644
index 000000000..c65b2ae33
--- /dev/null
+++ b/tests/files/BasicTests/keyaddrtest.json
@@ -0,0 +1,22 @@
+[
+    {
+        "seed": "cow",
+        "key": "c85ef7d79691fe79573b1a7064c19c1a9819ebdbd1faaab1a8ec92344438aaf4",
+        "addr": "cd2a3d9f938e13cd947ec05abc7fe734df8dd826",
+        "sig_of_emptystring": {
+            "v": "27",
+            "r": "55022946425863772466282515086640833500580355555249003729267710149987842051473",
+            "s": "3021698389129950584349170550428805649435913935175976180112863059249983907949"
+        }
+    },
+    {
+        "seed": "horse",
+        "key": "c87f65ff3f271bf5dc8643484f66b200109caffe4bf98c4cb393dc35740b28c0",
+        "addr": "13978aee95f38490e9769c39b2773ed763d9cd5f",
+        "sig_of_emptystring": {
+            "v": "28",
+            "r": "20570452350081260599473412372903969148670549754219103025003129053348571714359",
+            "s": "76892551129780267788164835941580941601518827936179476514262023835864819088004"
+        }
+    }
+]
diff --git a/tests/files/BasicTests/rlptest.json b/tests/files/BasicTests/rlptest.json
new file mode 100644
index 000000000..19adbb8e2
--- /dev/null
+++ b/tests/files/BasicTests/rlptest.json
@@ -0,0 +1,146 @@
+{
+	"emptystring": {
+		"in": "", 
+		"out": "80"
+	},
+	"shortstring": {
+		"in": "dog", 
+		"out": "83646f67"
+    },
+	"shortstring2": {
+		"in": "Lorem ipsum dolor sit amet, consectetur adipisicing eli", 
+		"out": "b74c6f72656d20697073756d20646f6c6f722073697420616d65742c20636f6e7365637465747572206164697069736963696e6720656c69"
+	},
+	"longstring": {
+		"in": "Lorem ipsum dolor sit amet, consectetur adipisicing elit", 
+		"out": "b8384c6f72656d20697073756d20646f6c6f722073697420616d65742c20636f6e7365637465747572206164697069736963696e6720656c6974"
+	},
+	"longstring2": {
+	"in": "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur mauris magna, suscipit sed vehicula non, iaculis faucibus tortor. Proin suscipit ultricies malesuada. Duis tortor elit, dictum quis tristique eu, ultrices at risus. Morbi a est imperdiet mi ullamcorper aliquet suscipit nec lorem. Aenean quis leo mollis, vulputate elit varius, consequat enim. Nulla ultrices turpis justo, et posuere urna consectetur nec. Proin non convallis metus. Donec tempor ipsum in mauris congue sollicitudin. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Suspendisse convallis sem vel massa faucibus, eget lacinia lacus tempor. Nulla quis ultricies purus. Proin auctor rhoncus nibh condimentum mollis. Aliquam consequat enim at metus luctus, a eleifend purus egestas. Curabitur at nibh metus. Nam bibendum, neque at auctor tristique, lorem libero aliquet arcu, non interdum tellus lectus sit amet eros. Cras rhoncus, metus ac ornare cursus, dolor justo ultrices metus, at ullamcorper volutpat", 
+		"out": "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"
+	},
+	"zero": {
+		"in": 0, 
+		"out": "80"
+	},
+	"smallint": {
+		"in": 1, 
+		"out": "01"
+	},
+	"smallint2": {
+		"in": 16, 
+		"out": "10"
+	},
+	"smallint3": {
+		"in": 79, 
+		"out": "4f"
+	},
+	"smallint4": {
+		"in": 127, 
+		"out": "7f"
+	},
+	"mediumint1": {
+		"in": 128, 
+		"out": "8180"
+	},
+	"mediumint2": {
+		"in": 1000, 
+		"out": "8203e8"
+	},
+	"mediumint3": {
+		"in": 100000, 
+		"out": "830186a0"
+	},
+	"mediumint4": {
+		"in": "#83729609699884896815286331701780722", 
+		"out": "8F102030405060708090A0B0C0D0E0F2"
+	},
+	"mediumint5": {
+		"in": "#105315505618206987246253880190783558935785933862974822347068935681",
+		"out": "9C0100020003000400050006000700080009000A000B000C000D000E01"
+	},
+	"emptylist": {
+		"in": [], 
+		"out": "c0"
+	},
+	"stringlist": {
+		"in": [ "dog", "god", "cat" ],
+		"out": "cc83646f6783676f6483636174"
+	},
+	"multilist": {
+		"in": [ "zw", [ 4 ], 1 ], 
+		"out": "c6827a77c10401"
+	},
+	"shortListMax1": {
+		"in": [ "asdf", "qwer", "zxcv", "asdf","qwer", "zxcv", "asdf", "qwer", "zxcv", "asdf", "qwer"],
+		"out": "F784617364668471776572847a78637684617364668471776572847a78637684617364668471776572847a78637684617364668471776572"
+	},
+	"longList1" : { 
+		"in" : [
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"]
+		], 
+		"out": "F840CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376"
+	},
+	"longList2" : { 
+		"in" : [
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"],
+			["asdf","qwer","zxcv"]
+		], 
+		"out": "F90200CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376CF84617364668471776572847a786376"
+	},
+
+	"listsoflists": {
+		"in": [ [ [], [] ], [] ], 
+		"out": "c4c2c0c0c0"
+	},
+	"listsoflists2": {
+		"in": [ [], [[]], [ [], [[]] ] ], 
+		"out": "c7c0c1c0c3c0c1c0"
+	},
+	"dictTest1" : { 
+		"in" : [ 
+			["key1", "val1"], 
+			["key2", "val2"], 
+			["key3", "val3"],
+			["key4", "val4"]
+		],
+		"out" : "ECCA846b6579318476616c31CA846b6579328476616c32CA846b6579338476616c33CA846b6579348476616c34"
+	},
+	"bigint": {
+		"in": "#115792089237316195423570985008687907853269984665640564039457584007913129639936",
+		"out": "a1010000000000000000000000000000000000000000000000000000000000000000"
+	}
+}
diff --git a/tests/files/BasicTests/txtest.json b/tests/files/BasicTests/txtest.json
new file mode 100644
index 000000000..1261d0766
--- /dev/null
+++ b/tests/files/BasicTests/txtest.json
@@ -0,0 +1,24 @@
+[
+    {
+        "key": "c85ef7d79691fe79573b1a7064c19c1a9819ebdbd1faaab1a8ec92344438aaf4",
+        "nonce": 0,
+        "gasprice": 1000000000000,
+        "startgas": 10000,
+        "to": "13978aee95f38490e9769c39b2773ed763d9cd5f",
+        "value": 10000000000000000,
+        "data": "",
+        "unsigned": "eb8085e8d4a510008227109413978aee95f38490e9769c39b2773ed763d9cd5f872386f26fc1000080808080",
+        "signed": "f86b8085e8d4a510008227109413978aee95f38490e9769c39b2773ed763d9cd5f872386f26fc10000801ba0eab47c1a49bf2fe5d40e01d313900e19ca485867d462fe06e139e3a536c6d4f4a014a569d327dcda4b29f74f93c0e9729d2f49ad726e703f9cd90dbb0fbf6649f1"
+    },
+    {
+        "key": "c87f65ff3f271bf5dc8643484f66b200109caffe4bf98c4cb393dc35740b28c0",
+        "nonce": 0,
+        "gasprice": 1000000000000,
+        "startgas": 10000,
+        "to": "",
+        "value": 0,
+        "data": "6025515b525b600a37f260003556601b596020356000355760015b525b54602052f260255860005b525b54602052f2",
+        "unsigned": "f83f8085e8d4a510008227108080af6025515b525b600a37f260003556601b596020356000355760015b525b54602052f260255860005b525b54602052f2808080",
+        "signed": "f87f8085e8d4a510008227108080af6025515b525b600a37f260003556601b596020356000355760015b525b54602052f260255860005b525b54602052f21ba05afed0244d0da90b67cf8979b0f246432a5112c0d31e8d5eedd2bc17b171c694a0bb1035c834677c2e1185b8dc90ca6d1fa585ab3d7ef23707e1a497a98e752d1b"
+    }
+]
diff --git a/tests/files/README.md b/tests/files/README.md
new file mode 100644
index 000000000..0f7dbe5a6
--- /dev/null
+++ b/tests/files/README.md
@@ -0,0 +1,26 @@
+tests
+=====
+
+Common tests for all clients to test against.
+
+All files should be of the form:
+
+```
+{
+	"test1name":
+	{
+		"test1property1": ...,
+		"test1property2": ...,
+		...
+	},
+	"test2name":
+	{
+		"test2property1": ...,
+		"test2property2": ...,
+		...
+	}
+}
+```
+
+Arrays are allowed, but don't use them for sets of properties - only use them for data that is clearly a continuous contiguous sequence of values.
+
diff --git a/tests/files/StateTests/stExample.json b/tests/files/StateTests/stExample.json
new file mode 100644
index 000000000..34bb4dd8e
--- /dev/null
+++ b/tests/files/StateTests/stExample.json
@@ -0,0 +1,64 @@
+{
+    "add11" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000100000",
+                "code" : "0x6001600101600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x02"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "804",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999899196",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6001600101600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/StateTests/stInitCodeTest.json b/tests/files/StateTests/stInitCodeTest.json
new file mode 100644
index 000000000..67aa42853
--- /dev/null
+++ b/tests/files/StateTests/stInitCodeTest.json
@@ -0,0 +1,870 @@
+{
+    "CallRecursiveContract" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "04110d816c380812a427968ece99b1c963dfbce6" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x04110d816c380812a427968ece99b1c963dfbce6"
+                }
+            },
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1",
+                "code" : "0x3060025560206000600039602060006000f0",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x095e7baea6a6c7c4c2dfeb977efac326af552d87"
+                }
+            },
+            "0a517d755cebbf66312b30fff713666a9cb917e0" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x0a517d755cebbf66312b30fff713666a9cb917e0"
+                }
+            },
+            "24dd378f51adc67a50e339e8031fe9bd4aafab36" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x24dd378f51adc67a50e339e8031fe9bd4aafab36"
+                }
+            },
+            "293f982d000532a7861ab122bdc4bbfd26bf9030" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x293f982d000532a7861ab122bdc4bbfd26bf9030"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "10000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2cf5732f017b0cf1b1f13a1478e10239716bf6b5" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x2cf5732f017b0cf1b1f13a1478e10239716bf6b5"
+                }
+            },
+            "31c640b92c21a1f1465c91070b4b3b4d6854195f" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
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+            },
+            "37f998764813b136ddf5a754f34063fd03065e36" : {
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+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x37f998764813b136ddf5a754f34063fd03065e36"
+                }
+            },
+            "37fa399a749c121f8a15ce77e3d9f9bec8020d7a" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x37fa399a749c121f8a15ce77e3d9f9bec8020d7a"
+                }
+            },
+            "4f36659fa632310b6ec438dea4085b522a2dd077" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x4f36659fa632310b6ec438dea4085b522a2dd077"
+                }
+            },
+            "62c01474f089b07dae603491675dc5b5748f7049" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x62c01474f089b07dae603491675dc5b5748f7049"
+                }
+            },
+            "729af7294be595a0efd7d891c9e51f89c07950c7" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x729af7294be595a0efd7d891c9e51f89c07950c7"
+                }
+            },
+            "83e3e5a16d3b696a0314b30b2534804dd5e11197" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x83e3e5a16d3b696a0314b30b2534804dd5e11197"
+                }
+            },
+            "8703df2417e0d7c59d063caa9583cb10a4d20532" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x8703df2417e0d7c59d063caa9583cb10a4d20532"
+                }
+            },
+            "8dffcd74e5b5923512916c6a64b502689cfa65e1" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x8dffcd74e5b5923512916c6a64b502689cfa65e1"
+                }
+            },
+            "95a4d7cccb5204733874fa87285a176fe1e9e240" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x95a4d7cccb5204733874fa87285a176fe1e9e240"
+                }
+            },
+            "99b2fcba8120bedd048fe79f5262a6690ed38c39" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x99b2fcba8120bedd048fe79f5262a6690ed38c39"
+                }
+            },
+            "a4202b8b8afd5354e3e40a219bdc17f6001bf2cf" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0xa4202b8b8afd5354e3e40a219bdc17f6001bf2cf"
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "89999",
+                "code" : "0x",
+                "nonce" : "1",
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+            },
+            "a9647f4a0a14042d91dc33c0328030a7157c93ae" : {
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+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0xa9647f4a0a14042d91dc33c0328030a7157c93ae"
+                }
+            },
+            "aa6cffe5185732689c18f37a7f86170cb7304c2a" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0xaa6cffe5185732689c18f37a7f86170cb7304c2a"
+                }
+            },
+            "aae4a2e3c51c04606dcb3723456e58f3ed214f45" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0xaae4a2e3c51c04606dcb3723456e58f3ed214f45"
+                }
+            },
+            "c37a43e940dfb5baf581a0b82b351d48305fc885" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0xc37a43e940dfb5baf581a0b82b351d48305fc885"
+                }
+            },
+            "d2571607e241ecf590ed94b12d87c94babe36db6" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0xd2571607e241ecf590ed94b12d87c94babe36db6"
+                }
+            },
+            "f735071cbee190d76b704ce68384fc21e389fbe7" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0xf735071cbee190d76b704ce68384fc21e389fbe7"
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "0",
+                "code" : "0x3060025560206000600039602060006000f0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "100000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
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+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "1"
+        }
+    },
+    "CallTheContractToCreateContractWithInitCode" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
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+        "out" : "0x",
+        "post" : {
+            "04110d816c380812a427968ece99b1c963dfbce6" : {
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+                "nonce" : "1",
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+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
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+                "code" : "0x3060025560206000600039602060006000f0",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x095e7baea6a6c7c4c2dfeb977efac326af552d87"
+                }
+            },
+            "0a517d755cebbf66312b30fff713666a9cb917e0" : {
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+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x0a517d755cebbf66312b30fff713666a9cb917e0"
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+            },
+            "24dd378f51adc67a50e339e8031fe9bd4aafab36" : {
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+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                    "0x02" : "0x24dd378f51adc67a50e339e8031fe9bd4aafab36"
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+            },
+            "293f982d000532a7861ab122bdc4bbfd26bf9030" : {
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+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
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+            "83e3e5a16d3b696a0314b30b2534804dd5e11197" : {
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+            "8703df2417e0d7c59d063caa9583cb10a4d20532" : {
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+            "aae4a2e3c51c04606dcb3723456e58f3ed214f45" : {
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+            "c37a43e940dfb5baf581a0b82b351d48305fc885" : {
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+                }
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+            "d2571607e241ecf590ed94b12d87c94babe36db6" : {
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+        "pre" : {
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+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "1"
+        }
+    },
+    "CallTheContractToCreateEmptyContract" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1",
+                "code" : "0x602060006000f0",
+                "nonce" : "1",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "605",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "99394",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            },
+            "d2571607e241ecf590ed94b12d87c94babe36db6" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "0",
+                "code" : "0x602060006000f0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "100000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "0x00",
+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "1"
+        }
+    },
+    "NotEnoughCashContractCreation" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "2",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "2",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "0x600a80600c6000396000f200600160008035811a8100",
+            "gasLimit" : "599",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "",
+            "value" : "1"
+        }
+    },
+    "OutOfGasContractCreation" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1770",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "6295ee1b4f6dd65047762f924ecd367c17eabf8f" : {
+                "balance" : "1",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "8229",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "10000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "0x600a80600c6000396000f200600160008035811a8100",
+            "gasLimit" : "590",
+            "gasPrice" : "3",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "",
+            "value" : "1"
+        }
+    },
+    "TransactionContractCreation" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "599",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "6295ee1b4f6dd65047762f924ecd367c17eabf8f" : {
+                "balance" : "1",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "99400",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "100000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "0x600a80600c6000396000f200600160008035811a8100",
+            "gasLimit" : "599",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "",
+            "value" : "1"
+        }
+    },
+    "TransactionCreateSuicideContract" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "6295ee1b4f6dd65047762f924ecd367c17eabf8f" : {
+                "balance" : "1",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "8999",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "10000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "0x600a80600c6000396000f200ff600160008035811a81",
+            "gasLimit" : "1000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "",
+            "value" : "1"
+        }
+    },
+    "TransactionStopInitCode" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "599",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "6295ee1b4f6dd65047762f924ecd367c17eabf8f" : {
+                "balance" : "1",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "9400",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "10000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "0x600a80600c600039600000f20000600160008035811a81",
+            "gasLimit" : "1000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "",
+            "value" : "1"
+        }
+    },
+    "TransactionSuicideInitCode" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000000" : {
+                "balance" : "1",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "611",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "9388",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "10000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "0x600a80600c6000396000fff2ffff600160008035811a81",
+            "gasLimit" : "1000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "",
+            "value" : "1"
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/StateTests/stLogTests.json b/tests/files/StateTests/stLogTests.json
new file mode 100644
index 000000000..888f6c5bb
--- /dev/null
+++ b/tests/files/StateTests/stLogTests.json
@@ -0,0 +1,3712 @@
+{
+    "log0_emptyMem" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+            {
+                "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+                "bloom" : "00000000000000000000800000000000000000000000000000000880000000000000000000000000000000000000000000000000000000000000000000000000",
+                "data" : "0x",
+                "topics" : [
+                ]
+            }
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000099977",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x01"
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000023",
+                "code" : "0x60006000a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "862",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999899138",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60006000a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "log0_logMemStartTooHigh" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000099977",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000023",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260017fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1628",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898372",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260017fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "log0_logMemsizeTooHigh" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000099977",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000023",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd6000527fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff6001a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1628",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
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+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "log4_nonEmptyMem" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+            {
+                "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+                "bloom" : "00000000000000000000800000000000000000000000000000000880000020000000000002000000000000000000080000000000000000000000000000000000",
+                "data" : "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
+                "topics" : [
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000"
+                ]
+            }
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000099977",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x01"
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000023",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff600052600060006000600060206000a4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1030",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898970",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff600052600060006000600060206000a4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "log4_nonEmptyMem_logMemSize1" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+            {
+                "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+                "bloom" : "00000000000000000000800000000000000000000000000000000880000020000000000002000000000000000000080000000000000000000000000000000000",
+                "data" : "0xaa",
+                "topics" : [
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000"
+                ]
+            }
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000099977",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x01"
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000023",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd600052600060006000600060016000a4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "999",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999899001",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd600052600060006000600060016000a4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "log4_nonEmptyMem_logMemSize1_logMemStart31" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+            {
+                "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+                "bloom" : "00000000000000000000800000000000000000000000000000000880000020000000000002000000000000000000080000000000000000000000000000000000",
+                "data" : "0xdd",
+                "topics" : [
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000"
+                ]
+            }
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000099977",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x01"
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000023",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260006000600060006001601fa4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "999",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999899001",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66103e8f1600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260006000600060006001601fa4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/StateTests/stPreCompiledContracts.json b/tests/files/StateTests/stPreCompiledContracts.json
new file mode 100644
index 000000000..0f1db1275
--- /dev/null
+++ b/tests/files/StateTests/stPreCompiledContracts.json
@@ -0,0 +1,1674 @@
+{
+    "CallEcrecover0" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000001" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20100000",
+                "code" : "0x7f18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c600052601c6020527f73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75f6040527feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c45496060526020608060806000600060016103e8f160025560a060020a608051066000556000543214600155",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+                    "0x01" : "0x01",
+                    "0x02" : "0x01"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1977",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898023",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20000000",
+                "code" : "0x7f18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c600052601c6020527f73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75f6040527feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c45496060526020608060806000600060016103e8f160025560a060020a608051066000556000543214600155",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "365224",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "CallEcrecover0_0input" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000001" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20100000",
+                "code" : "0x6020608060806000600060016103e8f160025560a060020a60805106600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x02" : "0x01"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1441",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898559",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20000000",
+                "code" : "0x6020608060806000600060016103e8f160025560a060020a60805106600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "365224",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "CallEcrecover0_Gas499" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000001" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20100000",
+                "code" : "0x7f18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c600052601c6020527f73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75f6040527feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c45496060526020608060806000600060016101f3f160025560a060020a608051066000556000543214600155",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1376",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898624",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20000000",
+                "code" : "0x7f18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c600052601c6020527f73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75f6040527feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c45496060526020608060806000600060016101f3f160025560a060020a608051066000556000543214600155",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "365224",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "CallEcrecover0_completeReturnValue" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000001" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
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+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000002" : {
+                "balance" : "19",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20099981",
+                "code" : "0x6020600060006000601360026101f4f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xe3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                    "0x02" : "0x01"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1182",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898818",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20000000",
+                "code" : "0x6020600060006000601360026101f4f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "365224",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "CallSha256_2" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000002" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20100000",
+                "code" : "0x64f34578907f6005526020600060256000600060026101f4f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xcb39b3bde22925b2f931111130c774761d8895e0e08437c9b396c1e97d10f34d",
+                    "0x02" : "0x01"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1286",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898714",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20000000",
+                "code" : "0x64f34578907f6005526020600060256000600060026101f4f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "365224",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "CallSha256_3" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000002" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20100000",
+                "code" : "0x64f34578907f6000526020600060256000600060026101f4f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x7392925565d67be8e9620aacbcfaecd8cb6ec58d709d25da9eccf1d08a41ce35",
+                    "0x02" : "0x01"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1286",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898714",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20000000",
+                "code" : "0x64f34578907f6000526020600060256000600060026101f4f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "365224",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "CallSha256_4" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000002" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20100000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff6000526020600060206000600060026064f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xaf9613760f72635fbdb44a5a0a63c39f12af30f950a6ee5c971be188e89c4051",
+                    "0x02" : "0x01"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1235",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898765",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff6000526020600060206000600060026064f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "365224",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "CallSha256_4_gas99" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000002" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20100000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff6000526020600060206000600060026063f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1034",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898966",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "20000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff6000526020600060206000600060026063f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "365224",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "CallSha256_5" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000002" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
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+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff60005260206000620f42406000600060026101f4f1600255600051600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "32684",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
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+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999867316",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
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+                "nonce" : "0",
+                "storage" : {
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+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "10000000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/StateTests/stRecursiveCreate.json b/tests/files/StateTests/stRecursiveCreate.json
new file mode 100644
index 000000000..983431484
--- /dev/null
+++ b/tests/files/StateTests/stRecursiveCreate.json
@@ -0,0 +1,7231 @@
+{
+    "recursiveCreate" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
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+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
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+    }
+}
\ No newline at end of file
diff --git a/tests/files/StateTests/stRefundTest.json b/tests/files/StateTests/stRefundTest.json
new file mode 100644
index 000000000..08ae1fac8
--- /dev/null
+++ b/tests/files/StateTests/stRefundTest.json
@@ -0,0 +1,523 @@
+{
+    "refund500" : {
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+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "0"
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+    "refund50_1" : {
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+        },
+        "transaction" : {
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+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "0"
+        }
+    },
+    "refund50_2" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
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+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
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+        "logs" : [
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+        },
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+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "0"
+        }
+    },
+    "refund600" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600154506002545061ffff60020a600a553031600b55600060015560006002556000600355600060045560006005556000600655",
+                "nonce" : "0",
+                "storage" : {
+                    "0x0b" : "0x0de0b6b3a7640000"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "492",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "9508",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600154506002545061ffff60020a600a553031600b55600060015560006002556000600355600060045560006005556000600655",
+                "nonce" : "0",
+                "storage" : {
+                    "0x01" : "0x01",
+                    "0x02" : "0x01",
+                    "0x03" : "0x01",
+                    "0x04" : "0x01",
+                    "0x05" : "0x01",
+                    "0x06" : "0x01"
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "10000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "10000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "0"
+        }
+    },
+    "refund_NoOOG_1" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6000600155",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "402",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "100",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6000600155",
+                "nonce" : "0",
+                "storage" : {
+                    "0x01" : "0x01"
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "502",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "502",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "0"
+        }
+    },
+    "refund_OOG" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6000600155",
+                "nonce" : "0",
+                "storage" : {
+                    "0x01" : "0x01"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "500",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6000600155",
+                "nonce" : "0",
+                "storage" : {
+                    "0x01" : "0x01"
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "500",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "500",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "0"
+        }
+    },
+    "refund_changeNonZeroStorage" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000010",
+                "code" : "0x6017600155",
+                "nonce" : "0",
+                "storage" : {
+                    "0x01" : "0x17"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "602",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "388",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6017600155",
+                "nonce" : "0",
+                "storage" : {
+                    "0x01" : "0x01"
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "850",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "10"
+        }
+    },
+    "refund_getEtherBack" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000010",
+                "code" : "0x6000600155",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "402",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "588",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6000600155",
+                "nonce" : "0",
+                "storage" : {
+                    "0x01" : "0x01"
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "850",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "10"
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/StateTests/stSpecialTest.json b/tests/files/StateTests/stSpecialTest.json
new file mode 100644
index 000000000..91b51fdb0
--- /dev/null
+++ b/tests/files/StateTests/stSpecialTest.json
@@ -0,0 +1,77 @@
+{
+    "makeMoney" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000010",
+                "code" : "0x7b601080600c6000396000f200600035541560095700602035600035556000526000600060006000601773aaaaaaaaace5edbc8e2a8697c15331677e6ebf0b7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffecf1",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "850",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "140",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            },
+            "aaaaaaaaace5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600160015532600255",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7b601080600c6000396000f200600035541560095700602035600035556000526000600060006000601773aaaaaaaaace5edbc8e2a8697c15331677e6ebf0b7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffecf1",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "aaaaaaaaace5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600160015532600255",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "850",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "10"
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/StateTests/stSystemOperationsTest.json b/tests/files/StateTests/stSystemOperationsTest.json
new file mode 100644
index 000000000..612331ae3
--- /dev/null
+++ b/tests/files/StateTests/stSystemOperationsTest.json
@@ -0,0 +1,5830 @@
+{
+    "ABAcalls0" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000099999",
+                "code" : "0x6000600060006000601873945304eb96065b2a98b57a48a06ae28d285a71b56103e8f15855",
+                "nonce" : "0",
+                "storage" : {
+                    "0x23" : "0x01"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "1658",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "945304eb96065b2a98b57a48a06ae28d285a71b5" : {
+                "balance" : "24",
+                "code" : "0x6000600060006000601773095e7baea6a6c7c4c2dfeb977efac326af552d876101f4f16001015855",
+                "nonce" : "0",
+                "storage" : {
+                    "0x26" : "0x01"
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999898342",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6000600060006000601873945304eb96065b2a98b57a48a06ae28d285a71b56103e8f15855",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "945304eb96065b2a98b57a48a06ae28d285a71b5" : {
+                "balance" : "23",
+                "code" : "0x6000600060006000601773095e7baea6a6c7c4c2dfeb977efac326af552d876101f4f16001015855",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "1000000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "ABAcalls1" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000099481",
+                "code" : "0x6000600060006000601873945304eb96065b2a98b57a48a06ae28d285a71b56103e85a03f15855",
+                "nonce" : "0",
+                "storage" : {
+                    "0x25" : "0x01"
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "131292",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "945304eb96065b2a98b57a48a06ae28d285a71b5" : {
+                "balance" : "542",
+                "code" : "0x6000600060006000601773095e7baea6a6c7c4c2dfeb977efac326af552d876103e85a03f16001015855",
+                "nonce" : "0",
+                "storage" : {
+                    "0x28" : "0x02"
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999768708",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6000600060006000601873945304eb96065b2a98b57a48a06ae28d285a71b56103e85a03f15855",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "945304eb96065b2a98b57a48a06ae28d285a71b5" : {
+                "balance" : "23",
+                "code" : "0x6000600060006000601773095e7baea6a6c7c4c2dfeb977efac326af552d876103e85a03f16001015855",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "1000000",
+            "gasPrice" : "1",
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+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1999999999999999197",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x3260005532ff",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "1000000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    },
+    "suicideSendEtherToMe" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "10000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "501",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "999999999999899499",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x30ff",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "1000000",
+            "gasPrice" : "1",
+            "nonce" : "0",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+            "value" : "100000"
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/StateTests/stTransactionTest.json b/tests/files/StateTests/stTransactionTest.json
new file mode 100644
index 000000000..0de850797
--- /dev/null
+++ b/tests/files/StateTests/stTransactionTest.json
@@ -0,0 +1,277 @@
+{
+    "EmptyTransaction" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "100000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "100000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "",
+            "gasPrice" : "",
+            "nonce" : "",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "",
+            "value" : ""
+        }
+    },
+    "TransactionFromCoinbaseNotEnoughFounds" : {
+        "env" : {
+            "currentCoinbase" : "a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1100",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "b94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "b94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "600",
+            "gasPrice" : "1",
+            "nonce" : "",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "b94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+            "value" : "502"
+        }
+    },
+    "TransactionSendingToEmpty" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "500",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "6295ee1b4f6dd65047762f924ecd367c17eabf8f" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "99500",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "100000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "500",
+            "gasPrice" : "1",
+            "nonce" : "",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "",
+            "value" : ""
+        }
+    },
+    "TransactionSendingToZero" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0000000000000000000000000000000000000000" : {
+                "balance" : "1",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "500",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "99499",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "100000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "5000",
+            "gasPrice" : "1",
+            "nonce" : "",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "0000000000000000000000000000000000000000",
+            "value" : "1"
+        }
+    },
+    "TransactionToItself" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" : {
+                "balance" : "500",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "99500",
+                "code" : "0x",
+                "nonce" : "1",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "100000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "5000",
+            "gasPrice" : "1",
+            "nonce" : "",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+            "value" : "1"
+        }
+    },
+    "TransactionToItselfNotEnoughFounds" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "45678256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : 1,
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1101",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "1101",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "transaction" : {
+            "data" : "",
+            "gasLimit" : "600",
+            "gasPrice" : "1",
+            "nonce" : "",
+            "secretKey" : "45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8",
+            "to" : "a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+            "value" : "502"
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/TODO b/tests/files/TODO
new file mode 100644
index 000000000..91d0f358b
--- /dev/null
+++ b/tests/files/TODO
@@ -0,0 +1,21 @@
+- Move over to standard and clear JSON format:
+
+All files should be of the form:
+
+{
+	"test1name":
+	{
+		"test1property1": ...,
+		"test1property2": ...,
+		...
+	},
+	"test2name":
+	{
+		"test2property1": ...,
+		"test2property2": ...,
+		...
+	}
+}
+
+Arrays are allowed, but don't use them for sets of properties - only use them for data that is clearly a continuous contiguous sequence of values.
+
diff --git a/tests/files/TrieTests/trieanyorder.json b/tests/files/TrieTests/trieanyorder.json
new file mode 100644
index 000000000..ebf5fbff0
--- /dev/null
+++ b/tests/files/TrieTests/trieanyorder.json
@@ -0,0 +1,55 @@
+{
+  "singleItem": {
+    "in": {
+      "A": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+    },
+    "root": "0xd23786fb4a010da3ce639d66d5e904a11dbc02746d1ce25029e53290cabf28ab"
+  },
+  "dogs": {
+    "in": {
+      "doe": "reindeer",
+      "dog": "puppy",
+      "dogglesworth": "cat"
+    },
+    "root": "0x8aad789dff2f538bca5d8ea56e8abe10f4c7ba3a5dea95fea4cd6e7c3a1168d3"
+  },
+  "puppy": {
+    "in": {
+      "do": "verb",
+      "horse": "stallion",
+      "doge": "coin",
+      "dog": "puppy"
+    },
+    "root": "0x5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84"
+  },
+  "foo": {
+    "in": {
+      "foo": "bar",
+      "food": "bat",
+      "food": "bass"
+    },
+    "root": "0x17beaa1648bafa633cda809c90c04af50fc8aed3cb40d16efbddee6fdf63c4c3"
+  },
+  "smallValues": {
+    "in": {
+      "be": "e",
+      "dog": "puppy",
+      "bed": "d"
+    },
+    "root": "0x3f67c7a47520f79faa29255d2d3c084a7a6df0453116ed7232ff10277a8be68b"
+  },
+  "testy": {
+    "in": {
+      "test": "test",
+      "te": "testy"
+    },
+    "root": "0x8452568af70d8d140f58d941338542f645fcca50094b20f3c3d8c3df49337928"
+  },
+  "hex": {
+    "in": {
+      "0x0045": "0x0123456789",
+      "0x4500": "0x9876543210"
+    },
+    "root": "0x285505fcabe84badc8aa310e2aae17eddc7d120aabec8a476902c8184b3a3503"
+  }
+}
diff --git a/tests/files/TrieTests/trietest.json b/tests/files/TrieTests/trietest.json
new file mode 100644
index 000000000..ce5c2d191
--- /dev/null
+++ b/tests/files/TrieTests/trietest.json
@@ -0,0 +1,31 @@
+{
+  "emptyValues": {
+    "in": [
+      ["do", "verb"],
+      ["ether", "wookiedoo"],
+      ["horse", "stallion"],
+      ["shaman", "horse"],
+      ["doge", "coin"],
+      ["ether", null],
+      ["dog", "puppy"],
+      ["shaman", null]
+    ],
+    "root": "0x5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84"
+  },
+  "jeff": {
+    "in": [
+      ["0x0000000000000000000000000000000000000000000000000000000000000045", "0x22b224a1420a802ab51d326e29fa98e34c4f24ea"],
+      ["0x0000000000000000000000000000000000000000000000000000000000000046", "0x67706c2076330000000000000000000000000000000000000000000000000000"],
+      ["0x0000000000000000000000000000000000000000000000000000001234567890", "0x697c7b8c961b56f675d570498424ac8de1a918f6"],
+      ["0x000000000000000000000000697c7b8c961b56f675d570498424ac8de1a918f6", "0x1234567890"],
+      ["0x0000000000000000000000007ef9e639e2733cb34e4dfc576d4b23f72db776b2", "0x4655474156000000000000000000000000000000000000000000000000000000"],
+      ["0x000000000000000000000000ec4f34c97e43fbb2816cfd95e388353c7181dab1", "0x4e616d6552656700000000000000000000000000000000000000000000000000"],
+      ["0x4655474156000000000000000000000000000000000000000000000000000000", "0x7ef9e639e2733cb34e4dfc576d4b23f72db776b2"],
+      ["0x4e616d6552656700000000000000000000000000000000000000000000000000", "0xec4f34c97e43fbb2816cfd95e388353c7181dab1"],
+      ["0x0000000000000000000000000000000000000000000000000000001234567890", null],
+      ["0x000000000000000000000000697c7b8c961b56f675d570498424ac8de1a918f6", "0x6f6f6f6820736f2067726561742c207265616c6c6c793f000000000000000000"],
+      ["0x6f6f6f6820736f2067726561742c207265616c6c6c793f000000000000000000", "0x697c7b8c961b56f675d570498424ac8de1a918f6"]
+    ],
+    "root": "0x9f6221ebb8efe7cff60a716ecb886e67dd042014be444669f0159d8e68b42100"
+  }
+}
diff --git a/tests/files/TrieTests/trietestnextprev.json b/tests/files/TrieTests/trietestnextprev.json
new file mode 100644
index 000000000..f2ad924e3
--- /dev/null
+++ b/tests/files/TrieTests/trietestnextprev.json
@@ -0,0 +1,19 @@
+{
+    "basic": {
+        "in": [ "cat", "doge", "wallace" ],
+        "tests": [
+            [ "", "", "cat" ],
+            [ "bobo", "", "cat" ],
+            [ "c", "", "cat" ],
+            [ "car", "", "cat" ],
+            [ "cat", "", "doge" ],
+            [ "catering", "cat", "doge" ],
+            [ "d", "cat", "doge" ],
+            [ "doge", "cat", "wallace" ],
+            [ "dogerton", "doge", "wallace" ],
+            [ "w", "doge", "wallace" ],
+            [ "wallace", "doge", "" ],
+            [ "wallace123", "wallace", ""]
+        ]
+    }
+}
diff --git a/tests/files/VMTests/RandomTests/randomTest.json b/tests/files/VMTests/RandomTests/randomTest.json
new file mode 100644
index 000000000..dad2ee4a2
--- /dev/null
+++ b/tests/files/VMTests/RandomTests/randomTest.json
@@ -0,0 +1,46 @@
+{
+    "randomVMtest" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x675545",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9999",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x675545",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x675545",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/VMTests/vmArithmeticTest.json b/tests/files/VMTests/vmArithmeticTest.json
new file mode 100644
index 000000000..88d209dfa
--- /dev/null
+++ b/tests/files/VMTests/vmArithmeticTest.json
@@ -0,0 +1,3261 @@
+{
+    "add0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
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+}
diff --git a/tests/files/VMTests/vmBitwiseLogicOperationTest.json b/tests/files/VMTests/vmBitwiseLogicOperationTest.json
new file mode 100644
index 000000000..f72711995
--- /dev/null
+++ b/tests/files/VMTests/vmBitwiseLogicOperationTest.json
@@ -0,0 +1,2682 @@
+{
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+    },
+    "slt2" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60007fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff12600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9696",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60007fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff12600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60007fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff12600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "slt3" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff600012600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9896",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff600012600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff600012600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "slt4" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x6003600003600560000312600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9692",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6003600003600560000312600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6003600003600560000312600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "xor0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x6002600218600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9896",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6002600218600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6002600218600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "xor1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x6001600218600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9696",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6001600218600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x03"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6001600218600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "xor2" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x6001600318600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9696",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6001600318600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x02"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6001600318600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "xor3" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7f0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff18600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9696",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7f0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff18600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xfedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7f0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff18600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "xor4" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7feeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee18600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9696",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7feeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee18600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x1111111111111111111111111111111111111111111111111111111111111111"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7feeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee18600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "xor5" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7feeeeeeeeeeeeeeeeeeeeeeeeeeeeefeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee18600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9696",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7feeeeeeeeeeeeeeeeeeeeeeeeeeeeefeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee18600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x1111111111111111111111111111101111111111111111111111111111111111"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7feeeeeeeeeeeeeeeeeeeeeeeeeeeeefeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee18600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/VMTests/vmBlockInfoTest.json b/tests/files/VMTests/vmBlockInfoTest.json
new file mode 100644
index 000000000..90fa77a3d
--- /dev/null
+++ b/tests/files/VMTests/vmBlockInfoTest.json
@@ -0,0 +1,271 @@
+{
+    "coinbase" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x41600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9698",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x41600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x2adc25665018aa1fe0e6bc666dac8fc2697ff9ba"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x41600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "difficulty" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x44600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9698",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x44600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x0100"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x44600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "gaslimit" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x45600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9698",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x45600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x0f4240"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x45600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "number" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x43600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9898",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x43600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x43600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "prevhash" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x40600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9698",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x40600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x40600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "timestamp" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x42600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9698",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x42600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x42600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/VMTests/vmEnvironmentalInfoTest.json b/tests/files/VMTests/vmEnvironmentalInfoTest.json
new file mode 100644
index 000000000..37563707b
--- /dev/null
+++ b/tests/files/VMTests/vmEnvironmentalInfoTest.json
@@ -0,0 +1,1401 @@
+{
+    "address0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x30600055",
+            "data" : "0x",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999698",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x30600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x30600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "address1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "caller" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "code" : "0x30600055",
+            "data" : "0x",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999698",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x30600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xcd1722f3947def4cf144679da39c4c32bdc35681"
+                }
+            }
+        },
+        "pre" : {
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x30600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "balance0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x73cd1722f3947def4cf144679da39c4c32bdc3568131600055",
+            "data" : "0x",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999878",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x73cd1722f3947def4cf144679da39c4c32bdc3568131600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x73cd1722f3947def4cf144679da39c4c32bdc3568131600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "balance1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x730f572e5295c57f15886f9b263e2f6d2d6c7b5ec631600055",
+            "data" : "0x",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999678",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x730f572e5295c57f15886f9b263e2f6d2d6c7b5ec631600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x0de0b6b3a7640000"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x730f572e5295c57f15886f9b263e2f6d2d6c7b5ec631600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "balanceAddress2" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x3031730f572e5295c57f15886f9b263e2f6d2d6c7b5ec63114600055",
+            "data" : "0x",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999656",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x3031730f572e5295c57f15886f9b263e2f6d2d6c7b5ec63114600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x3031730f572e5295c57f15886f9b263e2f6d2d6c7b5ec63114600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "balanceCaller3" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x333173cd1722f3947def4cf144679da39c4c32bdc356813114600055",
+            "data" : "0x",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999656",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x333173cd1722f3947def4cf144679da39c4c32bdc356813114600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x01"
+                }
+            },
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "0",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x333173cd1722f3947def4cf144679da39c4c32bdc356813114600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "calldatacopy0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60026001600037600051600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999691",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60026001600037600051600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x2345000000000000000000000000000000000000000000000000000000000000"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60026001600037600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "calldatacopy1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60016001600037600051600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999691",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60016001600037600051600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x2300000000000000000000000000000000000000000000000000000000000000"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60016001600037600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "calldatacopy2" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60006001600037600051600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999892",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
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+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x386000600039600051600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999691",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x386000600039600051600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x3860006000396000516000550000000000000000000000000000000000000000"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x386000600039600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "codecopy_DataIndexTooHigh" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60087ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa600039600051600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999891",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60087ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa600039600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60087ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa600039600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "codesize" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x38600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999698",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x38600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x04"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x38600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "extcodecopy0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x333b60006000333c600051600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "123456789",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999689",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x333b60006000333c600051600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x6005600055000000000000000000000000000000000000000000000000000000"
+                }
+            },
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6005600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x333b60006000333c600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6005600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "extcodecopy_DataIndexTooHigh" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60087ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa6000303c600051600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999890",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60087ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa6000303c600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60087ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa6000303c600051600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "extcodesize0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x38333b14600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "123456789",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999695",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x38333b14600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x01"
+                }
+            },
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x38333b14600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x38333b14600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x38333b14600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "extcodesize1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "caller" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "code" : "0x333b600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "123456789",
+            "origin" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999697",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x38600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x333b600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x04"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x38600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            },
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x333b600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "gasprice" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x3a600055",
+            "data" : "0x01234567890abcdef01234567890abcdef",
+            "gas" : "100000000000",
+            "gasPrice" : "123456789",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999698",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x3a600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x075bcd15"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x3a600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "origin" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x32600055",
+            "data" : "0x",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999698",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x32600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xcd1722f3947def4cf144679da39c4c32bdc35681"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x32600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/VMTests/vmIOandFlowOperationsTest.json b/tests/files/VMTests/vmIOandFlowOperationsTest.json
new file mode 100644
index 000000000..120977086
--- /dev/null
+++ b/tests/files/VMTests/vmIOandFlowOperationsTest.json
@@ -0,0 +1,1527 @@
+{
+    "dupAt51becameMload" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x600260035155",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9695",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600260035155",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x02"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600260035155",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "gas0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x64ffffffffff60005261eeee605a525a600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9688",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x64ffffffffff60005261eeee605a525a600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x2705"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x64ffffffffff60005261eeee605a525a600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "gas1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
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+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9898",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x58600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x58600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "pc1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60ff60005558600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9596",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60ff60005558600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x05"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60ff60005558600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "pop0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x6002600360045055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9696",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6002600360045055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x03" : "0x02"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6002600360045055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "pop1" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x5060026003600455",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x5060026003600455",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "sstore_load_0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60ff60005560ee600a55600054601455",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9074",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60ff60005560ee600a55600054601455",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xff",
+                    "0x0a" : "0xee",
+                    "0x14" : "0xff"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60ff60005560ee600a55600054601455",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "sstore_load_1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60ff60005560ee600a55606454601455",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9274",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60ff60005560ee600a55606454601455",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xff",
+                    "0x0a" : "0xee"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60ff60005560ee600a55606454601455",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "sstore_load_2" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60ff60005560ee60015560dd600255600154600a55600254601455",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "8450",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60ff60005560ee60015560dd600255600154600a55600254601455",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xff",
+                    "0x01" : "0xee",
+                    "0x02" : "0xdd",
+                    "0x0a" : "0xee",
+                    "0x14" : "0xdd"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60ff60005560ee60015560dd600255600154600a55600254601455",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "swapAt52becameMstore" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x600260035255",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600260035255",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/VMTests/vmLogTest.json b/tests/files/VMTests/vmLogTest.json
new file mode 100644
index 000000000..48e20ac63
--- /dev/null
+++ b/tests/files/VMTests/vmLogTest.json
@@ -0,0 +1,2190 @@
+{
+    "log0_emptyMem" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60006000a0",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9966",
+        "logs" : [
+            {
+                "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+                "bloom" : "00000000000000000000800000000000000000000000000000000880000000000000000000000000000000000000000000000000000000000000000000000000",
+                "data" : "0x",
+                "topics" : [
+                ]
+            }
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60006000a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60006000a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log0_logMemStartTooHigh" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260017fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa0",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260017fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log0_logMemsizeTooHigh" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd6000527fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff6001a0",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd6000527fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff6001a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log0_logMemsizeZero" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260006001a0",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9962",
+        "logs" : [
+            {
+                "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+                "bloom" : "00000000000000000000800000000000000000000000000000000880000000000000000000000000000000000000000000000000000000000000000000000000",
+                "data" : "0x",
+                "topics" : [
+                ]
+            }
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260006001a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260006001a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log0_nonEmptyMem" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff60005260206000a0",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9930",
+        "logs" : [
+            {
+                "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+                "bloom" : "00000000000000000000800000000000000000000000000000000880000000000000000000000000000000000000000000000000000000000000000000000000",
+                "data" : "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
+                "topics" : [
+                ]
+            }
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff60005260206000a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff60005260206000a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log0_nonEmptyMem_logMemSize1" : {
+        "callcreates" : [
+        ],
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+        "callcreates" : [
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+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x600060006000600060006000a4",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9834",
+        "logs" : [
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+                "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+                "bloom" : "00000000000000000000800000000000000000000000000000000880000020000000000002000000000000000000080000000000000000000000000000000000",
+                "data" : "0x",
+                "topics" : [
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000"
+                ]
+            }
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
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+                "code" : "0x600060006000600060006000a4",
+                "nonce" : "0",
+                "storage" : {
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+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
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+                "code" : "0x600060006000600060006000a4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log4_logMemStartTooHigh" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd600052600060006000600060017fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa4",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
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+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd600052600060006000600060017fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log4_logMemsizeTooHigh" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260006000600060007fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff6001a4",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260006000600060007fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff6001a4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log4_logMemsizeZero" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
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+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd600052600060006000600060006001a4",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9830",
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+                "data" : "0x",
+                "topics" : [
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+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000"
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+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
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+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd600052600060006000600060006001a4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd600052600060006000600060006001a4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log4_nonEmptyMem" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff600052600060006000600060206000a4",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9798",
+        "logs" : [
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+                "data" : "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
+                "topics" : [
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+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000"
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+        "out" : "0x",
+        "post" : {
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+                "nonce" : "0",
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+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
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+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log4_nonEmptyMem_logMemSize1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd600052600060006000600060016000a4",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9829",
+        "logs" : [
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+                "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+                "bloom" : "00000000000000000000800000000000000000000000000000000880000020000000000002000000000000000000080000000000000000000000000000000000",
+                "data" : "0xaa",
+                "topics" : [
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000"
+                ]
+            }
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
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+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd600052600060006000600060016000a4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
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+                "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd600052600060006000600060016000a4",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log4_nonEmptyMem_logMemSize1_logMemStart31" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7faabbffffffffffffffffffffffffffffffffffffffffffffffffffffffffccdd60005260006000600060006001601fa4",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9829",
+        "logs" : [
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+                "bloom" : "00000000000000000000800000000000000000000000000000000880000020000000000002000000000000000000080000000000000000000000000000000000",
+                "data" : "0xdd",
+                "topics" : [
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+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000",
+                    "0000000000000000000000000000000000000000000000000000000000000000"
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+        "out" : "0x",
+        "post" : {
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+                "nonce" : "0",
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+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
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+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "log_2logs" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff60005260206000a060106002a0",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9880",
+        "logs" : [
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+                "bloom" : "00000000000000000000800000000000000000000000000000000880000000000000000000000000000000000000000000000000000000000000000000000000",
+                "data" : "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
+                "topics" : [
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+                "bloom" : "00000000000000000000800000000000000000000000000000000880000000000000000000000000000000000000000000000000000000000000000000000000",
+                "data" : "0xffffffffffffffffffffffffffffffff",
+                "topics" : [
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+        "out" : "0x",
+        "post" : {
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+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff60005260206000a060106002a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
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+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff60005260206000a060106002a0",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/VMTests/vmPushDupSwapTest.json b/tests/files/VMTests/vmPushDupSwapTest.json
new file mode 100644
index 000000000..9c69aed80
--- /dev/null
+++ b/tests/files/VMTests/vmPushDupSwapTest.json
@@ -0,0 +1,3072 @@
+{
+    "dup1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
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+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
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+        "gas" : "9697",
+        "logs" : [
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+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "dup10" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
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+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
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+        "exec" : {
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+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
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+        "out" : "0x",
+        "post" : {
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+        "pre" : {
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+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "dup11" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
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+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
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+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
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+            "data" : "0x",
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+            "value" : "1000000000000000000"
+        },
+        "gas" : "9687",
+        "logs" : [
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+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
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+        },
+        "pre" : {
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+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60036002600160039255",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9695",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60036002600160039255",
+                "nonce" : "0",
+                "storage" : {
+                    "0x03" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60036002600160039255",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "swap4" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x600460036002600160039355",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9694",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600460036002600160039355",
+                "nonce" : "0",
+                "storage" : {
+                    "0x04" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600460036002600160039355",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "swap5" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x6005600460036002600160039455",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9693",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6005600460036002600160039455",
+                "nonce" : "0",
+                "storage" : {
+                    "0x05" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6005600460036002600160039455",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "swap6" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60066005600460036002600160039555",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9692",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60066005600460036002600160039555",
+                "nonce" : "0",
+                "storage" : {
+                    "0x06" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60066005600460036002600160039555",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "swap7" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x600760066005600460036002600160039655",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9691",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600760066005600460036002600160039655",
+                "nonce" : "0",
+                "storage" : {
+                    "0x07" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600760066005600460036002600160039655",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "swap8" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x6008600760066005600460036002600160039755",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9690",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6008600760066005600460036002600160039755",
+                "nonce" : "0",
+                "storage" : {
+                    "0x08" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6008600760066005600460036002600160039755",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "swap9" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60096008600760066005600460036002600160039855",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9689",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60096008600760066005600460036002600160039855",
+                "nonce" : "0",
+                "storage" : {
+                    "0x09" : "0x01"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60096008600760066005600460036002600160039855",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/VMTests/vmSha3Test.json b/tests/files/VMTests/vmSha3Test.json
new file mode 100644
index 000000000..b9e6b46a1
--- /dev/null
+++ b/tests/files/VMTests/vmSha3Test.json
@@ -0,0 +1,253 @@
+{
+    "sha3_0" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x6000600020600055",
+            "data" : "0x",
+            "gas" : "100000000000",
+            "gasPrice" : "1000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "99999999687",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6000600020600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6000600020600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "sha3_1" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x6005600420600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9676",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6005600420600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0xc41589e7559804ea4a2080dad19d876a024ccb05117835447d72ce08c1d020ec"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6005600420600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "sha3_2" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x600a600a20600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9676",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600a600a20600055",
+                "nonce" : "0",
+                "storage" : {
+                    "0x" : "0x6bd2dd6bd408cbee33429358bf24fdc64612fbf8b1b4db604518f40ffd34b607"
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600a600a20600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "sha3_3" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x620fffff6103e820600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x620fffff6103e820600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "sha3_4" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x6064640fffffffff20600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x6064640fffffffff20600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "sha3_5" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x640fffffffff61271020600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x640fffffffff61271020600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "sha3_6" : {
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff20600055",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff20600055",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/VMTests/vmtests.json b/tests/files/VMTests/vmtests.json
new file mode 100644
index 000000000..e1d73ee5d
--- /dev/null
+++ b/tests/files/VMTests/vmtests.json
@@ -0,0 +1,214 @@
+{
+    "arith" : {
+        "callcreates" : [
+            {
+                "data" : "0x",
+                "destination" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+                "gasLimit" : "9770",
+                "value" : "74"
+            }
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x600060006000600060026002600803036002600306600260020460046004600402026002600201010101013360c85a03f1",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9949",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "999999999999999926",
+                "code" : "0x600060006000600060026002600803036002600306600260020460046004600402026002600201010101013360c85a03f1",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600060006000600060026002600803036002600306600260020460046004600402026002600201010101013360c85a03f1",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "boolean" : {
+        "callcreates" : [
+            {
+                "data" : "0x",
+                "destination" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+                "gasLimit" : "9786",
+                "value" : "2"
+            },
+            {
+                "data" : "0x",
+                "destination" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+                "gasLimit" : "9728",
+                "value" : "12"
+            },
+            {
+                "data" : "0x",
+                "destination" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+                "gasLimit" : "9691",
+                "value" : "13"
+            },
+            {
+                "data" : "0x",
+                "destination" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+                "gasLimit" : "9654",
+                "value" : "14"
+            }
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x600160011615601a57600060006000600060023360c85a03f1505b600060011615603557600060006000600060033360c85a03f1505b600160001615605057600060006000600060043360c85a03f1505b600060001615606b57600060006000600060053360c85a03f1505b6001600117156086576000600060006000600c3360c85a03f1505b60006001171560a1576000600060006000600d3360c85a03f1505b60016000171560bc576000600060006000600e3360c85a03f1505b60006000171560d7576000600060006000600f3360c85a03f1505b",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9824",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "999999999999999959",
+                "code" : "0x600160011615601a57600060006000600060023360c85a03f1505b600060011615603557600060006000600060033360c85a03f1505b600160001615605057600060006000600060043360c85a03f1505b600060001615606b57600060006000600060053360c85a03f1505b6001600117156086576000600060006000600c3360c85a03f1505b60006001171560a1576000600060006000600d3360c85a03f1505b60016000171560bc576000600060006000600e3360c85a03f1505b60006000171560d7576000600060006000600f3360c85a03f1505b",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x600160011615601a57600060006000600060023360c85a03f1505b600060011615603557600060006000600060033360c85a03f1505b600160001615605057600060006000600060043360c85a03f1505b600060001615606b57600060006000600060053360c85a03f1505b6001600117156086576000600060006000600c3360c85a03f1505b60006001171560a1576000600060006000600d3360c85a03f1505b60016000171560bc576000600060006000600e3360c85a03f1505b60006000171560d7576000600060006000600f3360c85a03f1505b",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "mktx" : {
+        "callcreates" : [
+            {
+                "data" : "0x",
+                "destination" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+                "gasLimit" : "9792",
+                "value" : "500000000000000000"
+            }
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x60006000600060006706f05b59d3b200003360c85a03f1",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9971",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "500000000000000000",
+                "code" : "0x60006000600060006706f05b59d3b200003360c85a03f1",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x60006000600060006706f05b59d3b200003360c85a03f1",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "suicide" : {
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "256",
+            "currentGasLimit" : "1000000",
+            "currentNumber" : "0",
+            "currentTimestamp" : "1",
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6"
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x33ff",
+            "data" : "0x",
+            "gas" : "10000",
+            "gasPrice" : "100000000000000",
+            "origin" : "cd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000"
+        },
+        "gas" : "9999",
+        "logs" : [
+        ],
+        "out" : "0x",
+        "post" : {
+            "cd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "code" : "0x33ff",
+                "nonce" : "0",
+                "storage" : {
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/files/index.js b/tests/files/index.js
new file mode 100644
index 000000000..34a03d8b2
--- /dev/null
+++ b/tests/files/index.js
@@ -0,0 +1,32 @@
+module.exports = {
+  blockgenesis: require('./BasicTests/blockgenesistest'),
+  genesishashes: require('./BasicTests/genesishashestest'),
+  hexencode: require('./BasicTests/hexencodetest'),
+  keyaddrtests: require('./BasicTests/keyaddrtest'),
+  rlptest: require('./BasicTests/rlptest'),
+  trietest: require('./TrieTests/trietest'),
+  trietestnextprev: require('./TrieTests/trietestnextprev'),
+  txtest: require('./BasicTests/txtest'),
+  StateTests: {
+    stExample: require('./StateTests/stExample.json'),
+    stInitCodeTest: require('./StateTests/stInitCodeTest.json'),
+    stLogTests: require('./StateTests/stLogTests.json'),
+    stPreCompiledContracts: require('./StateTests/stPreCompiledContracts'),
+    stRecursiveCreate: require('./StateTests/stRecursiveCreate'),
+    stSpecial: require('./StateTests/stSpecialTest'),
+    stSystemOperationsTest: require('./StateTests/stSystemOperationsTest'),
+    stTransactionTest: require('./StateTests/stTransactionTest')
+  },
+  VMTests: {
+    vmRandom: require('./VMTests/RandomTests/randomTest'),
+    vmArithmeticTest: require('./VMTests/vmArithmeticTest'),
+    vmBitwiseLogicOperationTest: require('./VMTests/vmBitwiseLogicOperationTest'),
+    vmBlockInfoTest: require('./VMTests/vmBlockInfoTest'),
+    vmEnvironmentalInfoTest: require('./VMTests/vmEnvironmentalInfoTest'),
+    vmIOandFlowOperationsTest: require('./VMTests/vmIOandFlowOperationsTest'),
+    vmLogTest: require('./VMTests/vmLogTest'),
+    vmPushDupSwapTest: require('./VMTests/vmPushDupSwapTest'),
+    vmSha3Test: require('./VMTests/vmSha3Test'),
+    vmtests: require('./VMTests/vmtests')
+  }
+};
diff --git a/tests/files/package.json b/tests/files/package.json
new file mode 100644
index 000000000..eb0841450
--- /dev/null
+++ b/tests/files/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "ethereum-tests",
+  "version": "0.0.0",
+  "description": "tests for ethereum",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"There are no tests for there tests\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ethereum/tests"
+  },
+  "keywords": [
+    "tests",
+    "ethereum"
+  ],
+  "author": "",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/ethereum/tests/issues"
+  },
+  "homepage": "https://github.com/ethereum/tests"
+}
diff --git a/tests/helper/common.go b/tests/helper/common.go
new file mode 100644
index 000000000..6a071968d
--- /dev/null
+++ b/tests/helper/common.go
@@ -0,0 +1,11 @@
+package helper
+
+import "github.com/ethereum/go-ethereum/ethutil"
+
+func FromHex(h string) []byte {
+	if ethutil.IsHex(h) {
+		h = h[2:]
+	}
+
+	return ethutil.Hex2Bytes(h)
+}
diff --git a/tests/helper/init.go b/tests/helper/init.go
new file mode 100644
index 000000000..578314e20
--- /dev/null
+++ b/tests/helper/init.go
@@ -0,0 +1,20 @@
+package helper
+
+import (
+	"log"
+	"os"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	logpkg "github.com/ethereum/go-ethereum/logger"
+)
+
+var Logger logpkg.LogSystem
+var Log = logpkg.NewLogger("TEST")
+
+func init() {
+	Logger = logpkg.NewStdLogSystem(os.Stdout, log.LstdFlags, logpkg.InfoLevel)
+	logpkg.AddLogSystem(Logger)
+
+	ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
+	ethutil.Config.Db, _ = NewMemDatabase()
+}
diff --git a/tests/helper/readers.go b/tests/helper/readers.go
new file mode 100644
index 000000000..03313aeda
--- /dev/null
+++ b/tests/helper/readers.go
@@ -0,0 +1,42 @@
+package helper
+
+import (
+	"encoding/json"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"testing"
+)
+
+func readJSON(t *testing.T, reader io.Reader, value interface{}) {
+	data, err := ioutil.ReadAll(reader)
+	err = json.Unmarshal(data, &value)
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func CreateHttpTests(t *testing.T, uri string, value interface{}) {
+	resp, err := http.Get(uri)
+	if err != nil {
+		t.Error(err)
+
+		return
+	}
+	defer resp.Body.Close()
+
+	readJSON(t, resp.Body, value)
+}
+
+func CreateFileTests(t *testing.T, fn string, value interface{}) {
+	file, err := os.Open(fn)
+	if err != nil {
+		t.Error(err)
+
+		return
+	}
+	defer file.Close()
+
+	readJSON(t, file, value)
+}
diff --git a/tests/helper/trie.go b/tests/helper/trie.go
new file mode 100644
index 000000000..32432cc7a
--- /dev/null
+++ b/tests/helper/trie.go
@@ -0,0 +1,31 @@
+package helper
+
+import "github.com/ethereum/go-ethereum/trie"
+
+type MemDatabase struct {
+	db map[string][]byte
+}
+
+func NewMemDatabase() (*MemDatabase, error) {
+	db := &MemDatabase{db: make(map[string][]byte)}
+	return db, nil
+}
+func (db *MemDatabase) Put(key []byte, value []byte) {
+	db.db[string(key)] = value
+}
+func (db *MemDatabase) Get(key []byte) ([]byte, error) {
+	return db.db[string(key)], nil
+}
+func (db *MemDatabase) Delete(key []byte) error {
+	delete(db.db, string(key))
+	return nil
+}
+func (db *MemDatabase) Print()              {}
+func (db *MemDatabase) Close()              {}
+func (db *MemDatabase) LastKnownTD() []byte { return nil }
+
+func NewTrie() *trie.Trie {
+	db, _ := NewMemDatabase()
+
+	return trie.New(db, "")
+}
diff --git a/tests/helper/vm.go b/tests/helper/vm.go
new file mode 100644
index 000000000..e174e0892
--- /dev/null
+++ b/tests/helper/vm.go
@@ -0,0 +1,156 @@
+package helper
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/vm"
+)
+
+type Env struct {
+	depth        int
+	state        *state.StateDB
+	skipTransfer bool
+	Gas          *big.Int
+
+	origin   []byte
+	parent   []byte
+	coinbase []byte
+
+	number     *big.Int
+	time       int64
+	difficulty *big.Int
+	gasLimit   *big.Int
+
+	logs state.Logs
+}
+
+func NewEnv(state *state.StateDB) *Env {
+	return &Env{
+		state: state,
+	}
+}
+
+func NewEnvFromMap(state *state.StateDB, envValues map[string]string, exeValues map[string]string) *Env {
+	env := NewEnv(state)
+
+	env.origin = ethutil.Hex2Bytes(exeValues["caller"])
+	env.parent = ethutil.Hex2Bytes(envValues["previousHash"])
+	env.coinbase = ethutil.Hex2Bytes(envValues["currentCoinbase"])
+	env.number = ethutil.Big(envValues["currentNumber"])
+	env.time = ethutil.Big(envValues["currentTimestamp"]).Int64()
+	env.difficulty = ethutil.Big(envValues["currentDifficulty"])
+	env.gasLimit = ethutil.Big(envValues["currentGasLimit"])
+	env.Gas = new(big.Int)
+
+	return env
+}
+
+func (self *Env) Origin() []byte        { return self.origin }
+func (self *Env) BlockNumber() *big.Int { return self.number }
+func (self *Env) PrevHash() []byte      { return self.parent }
+func (self *Env) Coinbase() []byte      { return self.coinbase }
+func (self *Env) Time() int64           { return self.time }
+func (self *Env) Difficulty() *big.Int  { return self.difficulty }
+func (self *Env) BlockHash() []byte     { return nil }
+func (self *Env) State() *state.StateDB { return self.state }
+func (self *Env) GasLimit() *big.Int    { return self.gasLimit }
+func (self *Env) AddLog(log state.Log) {
+	self.logs = append(self.logs, log)
+}
+func (self *Env) Depth() int     { return self.depth }
+func (self *Env) SetDepth(i int) { self.depth = i }
+func (self *Env) Transfer(from, to vm.Account, amount *big.Int) error {
+	return vm.Transfer(from, to, amount)
+}
+
+func (self *Env) vm(addr, data []byte, gas, price, value *big.Int) *core.Execution {
+	exec := core.NewExecution(self, addr, data, gas, price, value)
+	exec.SkipTransfer = self.skipTransfer
+
+	return exec
+}
+
+func (self *Env) Call(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(addr, data, gas, price, value)
+	ret, err := exe.Call(addr, caller)
+	self.Gas = exe.Gas
+
+	return ret, err
+}
+func (self *Env) CallCode(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(caller.Address(), data, gas, price, value)
+	return exe.Call(addr, caller)
+}
+
+func (self *Env) Create(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ClosureRef) {
+	exe := self.vm(addr, data, gas, price, value)
+	return exe.Create(caller)
+}
+
+func RunVm(state *state.StateDB, env, exec map[string]string) ([]byte, state.Logs, *big.Int, error) {
+	var (
+		to    = FromHex(exec["address"])
+		from  = FromHex(exec["caller"])
+		data  = FromHex(exec["data"])
+		gas   = ethutil.Big(exec["gas"])
+		price = ethutil.Big(exec["gasPrice"])
+		value = ethutil.Big(exec["value"])
+	)
+
+	caller := state.GetOrNewStateObject(from)
+
+	vmenv := NewEnvFromMap(state, env, exec)
+	vmenv.skipTransfer = true
+	ret, err := vmenv.Call(caller, to, data, gas, price, value)
+
+	return ret, vmenv.logs, vmenv.Gas, err
+}
+
+func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, state.Logs, *big.Int, error) {
+	var (
+		keyPair, _ = crypto.NewKeyPairFromSec([]byte(ethutil.Hex2Bytes(tx["secretKey"])))
+		to         = FromHex(tx["to"])
+		data       = FromHex(tx["data"])
+		gas        = ethutil.Big(tx["gasLimit"])
+		price      = ethutil.Big(tx["gasPrice"])
+		value      = ethutil.Big(tx["value"])
+		caddr      = FromHex(env["currentCoinbase"])
+	)
+
+	coinbase := statedb.GetOrNewStateObject(caddr)
+	coinbase.SetGasPool(ethutil.Big(env["currentGasLimit"]))
+
+	message := NewMessage(keyPair.Address(), to, data, value, gas, price)
+	Log.DebugDetailf("message{ to: %x, from %x, value: %v, gas: %v, price: %v }\n", message.to[:4], message.from[:4], message.value, message.gas, message.price)
+	st := core.NewStateTransition(coinbase, message, statedb, nil)
+	vmenv := NewEnvFromMap(statedb, env, tx)
+	vmenv.origin = keyPair.Address()
+	st.Env = vmenv
+	ret, err := st.TransitionState()
+	statedb.Update(vmenv.Gas)
+
+	return ret, vmenv.logs, vmenv.Gas, err
+}
+
+type Message struct {
+	from, to          []byte
+	value, gas, price *big.Int
+	data              []byte
+}
+
+func NewMessage(from, to, data []byte, value, gas, price *big.Int) Message {
+	return Message{from, to, value, gas, price, data}
+}
+
+func (self Message) Hash() []byte       { return nil }
+func (self Message) From() []byte       { return self.from }
+func (self Message) To() []byte         { return self.to }
+func (self Message) GasPrice() *big.Int { return self.price }
+func (self Message) Gas() *big.Int      { return self.gas }
+func (self Message) Value() *big.Int    { return self.value }
+func (self Message) Nonce() uint64      { return 0 }
+func (self Message) Data() []byte       { return self.data }
diff --git a/tests/vm/.ethtest b/tests/vm/.ethtest
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/tests/vm/.ethtest
diff --git a/tests/vm/gh_test.go b/tests/vm/gh_test.go
new file mode 100644
index 000000000..1efda7fe0
--- /dev/null
+++ b/tests/vm/gh_test.go
@@ -0,0 +1,238 @@
+package vm
+
+import (
+	"bytes"
+	"math/big"
+	"strconv"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/tests/helper"
+)
+
+type Account struct {
+	Balance string
+	Code    string
+	Nonce   string
+	Storage map[string]string
+}
+
+type Log struct {
+	AddressF string   `json:"address"`
+	DataF    string   `json:"data"`
+	TopicsF  []string `json:"topics"`
+	BloomF   string   `json:"bloom"`
+}
+
+func (self Log) Address() []byte      { return ethutil.Hex2Bytes(self.AddressF) }
+func (self Log) Data() []byte         { return ethutil.Hex2Bytes(self.DataF) }
+func (self Log) RlpData() interface{} { return nil }
+func (self Log) Topics() [][]byte {
+	t := make([][]byte, len(self.TopicsF))
+	for i, topic := range self.TopicsF {
+		t[i] = ethutil.Hex2Bytes(topic)
+	}
+	return t
+}
+
+func StateObjectFromAccount(addr string, account Account) *state.StateObject {
+	obj := state.NewStateObject(ethutil.Hex2Bytes(addr))
+	obj.SetBalance(ethutil.Big(account.Balance))
+
+	if ethutil.IsHex(account.Code) {
+		account.Code = account.Code[2:]
+	}
+	obj.Code = ethutil.Hex2Bytes(account.Code)
+	obj.Nonce = ethutil.Big(account.Nonce).Uint64()
+
+	return obj
+}
+
+type Env struct {
+	CurrentCoinbase   string
+	CurrentDifficulty string
+	CurrentGasLimit   string
+	CurrentNumber     string
+	CurrentTimestamp  interface{}
+	PreviousHash      string
+}
+
+type VmTest struct {
+	Callcreates interface{}
+	//Env         map[string]string
+	Env         Env
+	Exec        map[string]string
+	Transaction map[string]string
+	Logs        []Log
+	Gas         string
+	Out         string
+	Post        map[string]Account
+	Pre         map[string]Account
+}
+
+func RunVmTest(p string, t *testing.T) {
+	tests := make(map[string]VmTest)
+	helper.CreateFileTests(t, p, &tests)
+
+	for name, test := range tests {
+		statedb := state.New(helper.NewTrie())
+		for addr, account := range test.Pre {
+			obj := StateObjectFromAccount(addr, account)
+			statedb.SetStateObject(obj)
+			for a, v := range account.Storage {
+				obj.SetState(helper.FromHex(a), ethutil.NewValue(helper.FromHex(v)))
+			}
+		}
+
+		// XXX Yeah, yeah...
+		env := make(map[string]string)
+		env["currentCoinbase"] = test.Env.CurrentCoinbase
+		env["currentDifficulty"] = test.Env.CurrentDifficulty
+		env["currentGasLimit"] = test.Env.CurrentGasLimit
+		env["currentNumber"] = test.Env.CurrentNumber
+		env["previousHash"] = test.Env.PreviousHash
+		if n, ok := test.Env.CurrentTimestamp.(float64); ok {
+			env["currentTimestamp"] = strconv.Itoa(int(n))
+		} else {
+			env["currentTimestamp"] = test.Env.CurrentTimestamp.(string)
+		}
+
+		var (
+			ret  []byte
+			gas  *big.Int
+			err  error
+			logs state.Logs
+		)
+
+		if len(test.Exec) > 0 {
+			ret, logs, gas, err = helper.RunVm(statedb, env, test.Exec)
+		} else {
+			ret, logs, gas, err = helper.RunState(statedb, env, test.Transaction)
+		}
+
+		// When an error is returned it doesn't always mean the tests fails.
+		// Have to come up with some conditional failing mechanism.
+		if err != nil {
+			helper.Log.Infoln(err)
+		}
+
+		rexp := helper.FromHex(test.Out)
+		if bytes.Compare(rexp, ret) != 0 {
+			t.Errorf("%s's return failed. Expected %x, got %x\n", name, rexp, ret)
+		}
+
+		if len(test.Gas) > 0 {
+			gexp := ethutil.Big(test.Gas)
+			if gexp.Cmp(gas) != 0 {
+				t.Errorf("%s's gas failed. Expected %v, got %v\n", name, gexp, gas)
+			}
+		}
+
+		for addr, account := range test.Post {
+			obj := statedb.GetStateObject(helper.FromHex(addr))
+			if obj == nil {
+				continue
+			}
+
+			if len(test.Exec) == 0 {
+				if obj.Balance().Cmp(ethutil.Big(account.Balance)) != 0 {
+					t.Errorf("%s's : (%x) balance failed. Expected %v, got %v => %v\n", name, obj.Address()[:4], account.Balance, obj.Balance(), new(big.Int).Sub(ethutil.Big(account.Balance), obj.Balance()))
+				}
+			}
+
+			for addr, value := range account.Storage {
+				v := obj.GetState(helper.FromHex(addr)).Bytes()
+				vexp := helper.FromHex(value)
+
+				if bytes.Compare(v, vexp) != 0 {
+					t.Errorf("%s's : (%x: %s) storage failed. Expected %x, got %x (%v %v)\n", name, obj.Address()[0:4], addr, vexp, v, ethutil.BigD(vexp), ethutil.BigD(v))
+				}
+			}
+		}
+
+		if len(test.Logs) > 0 {
+			// Logs within the test itself aren't correct, missing empty fields (32 0s)
+			for i, log := range test.Logs {
+				genBloom := ethutil.LeftPadBytes(types.LogsBloom(state.Logs{logs[i]}).Bytes(), 64)
+				if !bytes.Equal(genBloom, ethutil.Hex2Bytes(log.BloomF)) {
+					t.Errorf("bloom mismatch")
+				}
+			}
+		}
+	}
+	logger.Flush()
+}
+
+// I've created a new function for each tests so it's easier to identify where the problem lies if any of them fail.
+func TestVMArithmetic(t *testing.T) {
+	const fn = "../files/vmtests/vmArithmeticTest.json"
+	RunVmTest(fn, t)
+}
+
+func TestBitwiseLogicOperation(t *testing.T) {
+	const fn = "../files/vmtests/vmBitwiseLogicOperationTest.json"
+	RunVmTest(fn, t)
+}
+
+func TestBlockInfo(t *testing.T) {
+	const fn = "../files/vmtests/vmBlockInfoTest.json"
+	RunVmTest(fn, t)
+}
+
+func TestEnvironmentalInfo(t *testing.T) {
+	const fn = "../files/vmtests/vmEnvironmentalInfoTest.json"
+	RunVmTest(fn, t)
+}
+
+func TestFlowOperation(t *testing.T) {
+	const fn = "../files/vmtests/vmIOandFlowOperationsTest.json"
+	RunVmTest(fn, t)
+}
+
+func TestPushDupSwap(t *testing.T) {
+	const fn = "../files/vmtests/vmPushDupSwapTest.json"
+	RunVmTest(fn, t)
+}
+
+func TestVMSha3(t *testing.T) {
+	const fn = "../files/vmtests/vmSha3Test.json"
+	RunVmTest(fn, t)
+}
+
+func TestVm(t *testing.T) {
+	const fn = "../files/vmtests/vmtests.json"
+	RunVmTest(fn, t)
+}
+
+func TestVmLog(t *testing.T) {
+	const fn = "../files/vmtests/vmLogTest.json"
+	RunVmTest(fn, t)
+}
+
+func TestStateSystemOperations(t *testing.T) {
+	const fn = "../files/StateTests/stSystemOperationsTest.json"
+	RunVmTest(fn, t)
+}
+
+func TestStatePreCompiledContracts(t *testing.T) {
+	const fn = "../files/StateTests/stPreCompiledContracts.json"
+	RunVmTest(fn, t)
+}
+
+func TestStateRecursiveCreate(t *testing.T) {
+	const fn = "../files/StateTests/stRecursiveCreate.json"
+	RunVmTest(fn, t)
+}
+
+func TestStateSpecial(t *testing.T) {
+	const fn = "../files/StateTests/stSpecialTest.json"
+	RunVmTest(fn, t)
+}
+
+func TestStateRefund(t *testing.T) {
+	const fn = "../files/StateTests/stRefundTest.json"
+	RunVmTest(fn, t)
+}
diff --git a/trie/encoding.go b/trie/encoding.go
new file mode 100644
index 000000000..4906bc90b
--- /dev/null
+++ b/trie/encoding.go
@@ -0,0 +1,76 @@
+package trie
+
+import (
+	"bytes"
+	"encoding/hex"
+	"strings"
+)
+
+func CompactEncode(hexSlice []byte) string {
+	terminator := 0
+	if hexSlice[len(hexSlice)-1] == 16 {
+		terminator = 1
+	}
+
+	if terminator == 1 {
+		hexSlice = hexSlice[:len(hexSlice)-1]
+	}
+
+	oddlen := len(hexSlice) % 2
+	flags := byte(2*terminator + oddlen)
+	if oddlen != 0 {
+		hexSlice = append([]byte{flags}, hexSlice...)
+	} else {
+		hexSlice = append([]byte{flags, 0}, hexSlice...)
+	}
+
+	var buff bytes.Buffer
+	for i := 0; i < len(hexSlice); i += 2 {
+		buff.WriteByte(byte(16*hexSlice[i] + hexSlice[i+1]))
+	}
+
+	return buff.String()
+}
+
+func CompactDecode(str string) []byte {
+	base := CompactHexDecode(str)
+	base = base[:len(base)-1]
+	if base[0] >= 2 {
+		base = append(base, 16)
+	}
+	if base[0]%2 == 1 {
+		base = base[1:]
+	} else {
+		base = base[2:]
+	}
+
+	return base
+}
+
+func CompactHexDecode(str string) []byte {
+	base := "0123456789abcdef"
+	hexSlice := make([]byte, 0)
+
+	enc := hex.EncodeToString([]byte(str))
+	for _, v := range enc {
+		hexSlice = append(hexSlice, byte(strings.IndexByte(base, byte(v))))
+	}
+	hexSlice = append(hexSlice, 16)
+
+	return hexSlice
+}
+
+func DecodeCompact(key []byte) string {
+	base := "0123456789abcdef"
+	var str string
+
+	for _, v := range key {
+		if v < 16 {
+			str += string(base[v])
+		}
+	}
+
+	res, _ := hex.DecodeString(str)
+
+	return string(res)
+}
diff --git a/trie/encoding_test.go b/trie/encoding_test.go
new file mode 100644
index 000000000..193c898f3
--- /dev/null
+++ b/trie/encoding_test.go
@@ -0,0 +1,59 @@
+package trie
+
+import (
+	checker "gopkg.in/check.v1"
+)
+
+type TrieEncodingSuite struct{}
+
+var _ = checker.Suite(&TrieEncodingSuite{})
+
+func (s *TrieEncodingSuite) TestCompactEncode(c *checker.C) {
+	// even compact encode
+	test1 := []byte{1, 2, 3, 4, 5}
+	res1 := CompactEncode(test1)
+	c.Assert(res1, checker.Equals, "\x11\x23\x45")
+
+	// odd compact encode
+	test2 := []byte{0, 1, 2, 3, 4, 5}
+	res2 := CompactEncode(test2)
+	c.Assert(res2, checker.Equals, "\x00\x01\x23\x45")
+
+	//odd terminated compact encode
+	test3 := []byte{0, 15, 1, 12, 11, 8 /*term*/, 16}
+	res3 := CompactEncode(test3)
+	c.Assert(res3, checker.Equals, "\x20\x0f\x1c\xb8")
+
+	// even terminated compact encode
+	test4 := []byte{15, 1, 12, 11, 8 /*term*/, 16}
+	res4 := CompactEncode(test4)
+	c.Assert(res4, checker.Equals, "\x3f\x1c\xb8")
+}
+
+func (s *TrieEncodingSuite) TestCompactHexDecode(c *checker.C) {
+	exp := []byte{7, 6, 6, 5, 7, 2, 6, 2, 16}
+	res := CompactHexDecode("verb")
+	c.Assert(res, checker.DeepEquals, exp)
+}
+
+func (s *TrieEncodingSuite) TestCompactDecode(c *checker.C) {
+	// odd compact decode
+	exp := []byte{1, 2, 3, 4, 5}
+	res := CompactDecode("\x11\x23\x45")
+	c.Assert(res, checker.DeepEquals, exp)
+
+	// even compact decode
+	exp = []byte{0, 1, 2, 3, 4, 5}
+	res = CompactDecode("\x00\x01\x23\x45")
+	c.Assert(res, checker.DeepEquals, exp)
+
+	// even terminated compact decode
+	exp = []byte{0, 15, 1, 12, 11, 8 /*term*/, 16}
+	res = CompactDecode("\x20\x0f\x1c\xb8")
+	c.Assert(res, checker.DeepEquals, exp)
+
+	// even terminated compact decode
+	exp = []byte{15, 1, 12, 11, 8 /*term*/, 16}
+	res = CompactDecode("\x3f\x1c\xb8")
+	c.Assert(res, checker.DeepEquals, exp)
+}
diff --git a/trie/iterator.go b/trie/iterator.go
new file mode 100644
index 000000000..53d099a0c
--- /dev/null
+++ b/trie/iterator.go
@@ -0,0 +1,143 @@
+package trie
+
+import (
+	"bytes"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+type NodeType byte
+
+const (
+	EmptyNode NodeType = iota
+	BranchNode
+	LeafNode
+	ExtNode
+)
+
+func getType(node *ethutil.Value) NodeType {
+	if node.Len() == 0 {
+		return EmptyNode
+	}
+
+	if node.Len() == 2 {
+		k := CompactDecode(node.Get(0).Str())
+		if HasTerm(k) {
+			return LeafNode
+		}
+
+		return ExtNode
+	}
+
+	return BranchNode
+}
+
+type Iterator struct {
+	Path [][]byte
+	trie *Trie
+
+	Key   []byte
+	Value *ethutil.Value
+}
+
+func NewIterator(trie *Trie) *Iterator {
+	return &Iterator{trie: trie}
+}
+
+func (self *Iterator) key(node *ethutil.Value, path [][]byte) []byte {
+	switch getType(node) {
+	case LeafNode:
+		k := RemTerm(CompactDecode(node.Get(0).Str()))
+
+		self.Path = append(path, k)
+		self.Value = node.Get(1)
+
+		return k
+	case BranchNode:
+		if node.Get(16).Len() > 0 {
+			return []byte{16}
+		}
+
+		for i := byte(0); i < 16; i++ {
+			o := self.key(self.trie.getNode(node.Get(int(i)).Raw()), append(path, []byte{i}))
+			if o != nil {
+				return append([]byte{i}, o...)
+			}
+		}
+	case ExtNode:
+		currKey := node.Get(0).Bytes()
+
+		return self.key(self.trie.getNode(node.Get(1).Raw()), append(path, currKey))
+	}
+
+	return nil
+}
+
+func (self *Iterator) next(node *ethutil.Value, key []byte, path [][]byte) []byte {
+	switch typ := getType(node); typ {
+	case EmptyNode:
+		return nil
+	case BranchNode:
+		if len(key) > 0 {
+			subNode := self.trie.getNode(node.Get(int(key[0])).Raw())
+
+			o := self.next(subNode, key[1:], append(path, key[:1]))
+			if o != nil {
+				return append([]byte{key[0]}, o...)
+			}
+		}
+
+		var r byte = 0
+		if len(key) > 0 {
+			r = key[0] + 1
+		}
+
+		for i := r; i < 16; i++ {
+			subNode := self.trie.getNode(node.Get(int(i)).Raw())
+			o := self.key(subNode, append(path, []byte{i}))
+			if o != nil {
+				return append([]byte{i}, o...)
+			}
+		}
+	case LeafNode, ExtNode:
+		k := RemTerm(CompactDecode(node.Get(0).Str()))
+		if typ == LeafNode {
+			if bytes.Compare([]byte(k), []byte(key)) > 0 {
+				self.Value = node.Get(1)
+				self.Path = append(path, k)
+
+				return k
+			}
+		} else {
+			subNode := self.trie.getNode(node.Get(1).Raw())
+			subKey := key[len(k):]
+			var ret []byte
+			if BeginsWith(key, k) {
+				ret = self.next(subNode, subKey, append(path, k))
+			} else if bytes.Compare(k, key[:len(k)]) > 0 {
+				ret = self.key(node, append(path, k))
+			} else {
+				ret = nil
+			}
+
+			if ret != nil {
+				return append(k, ret...)
+			}
+		}
+	}
+
+	return nil
+}
+
+// Get the next in keys
+func (self *Iterator) Next(key string) []byte {
+	self.trie.mut.Lock()
+	defer self.trie.mut.Unlock()
+
+	k := RemTerm(CompactHexDecode(key))
+	n := self.next(self.trie.getNode(self.trie.Root), k, nil)
+
+	self.Key = []byte(DecodeCompact(n))
+
+	return self.Key
+}
diff --git a/trie/main_test.go b/trie/main_test.go
new file mode 100644
index 000000000..f6f64c06f
--- /dev/null
+++ b/trie/main_test.go
@@ -0,0 +1,9 @@
+package trie
+
+import (
+	"testing"
+
+	checker "gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) { checker.TestingT(t) }
diff --git a/trie/slice.go b/trie/slice.go
new file mode 100644
index 000000000..f53b6c749
--- /dev/null
+++ b/trie/slice.go
@@ -0,0 +1,53 @@
+package trie
+
+import (
+	"bytes"
+	"math"
+)
+
+// Helper function for comparing slices
+func CompareIntSlice(a, b []int) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for i, v := range a {
+		if v != b[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// Returns the amount of nibbles that match each other from 0 ...
+func MatchingNibbleLength(a, b []byte) int {
+	var i, length = 0, int(math.Min(float64(len(a)), float64(len(b))))
+
+	for i < length {
+		if a[i] != b[i] {
+			break
+		}
+		i++
+	}
+
+	return i
+}
+
+func HasTerm(s []byte) bool {
+	return s[len(s)-1] == 16
+}
+
+func RemTerm(s []byte) []byte {
+	if HasTerm(s) {
+		return s[:len(s)-1]
+	}
+
+	return s
+}
+
+func BeginsWith(a, b []byte) bool {
+	if len(b) > len(a) {
+		return false
+	}
+
+	return bytes.Equal(a[:len(b)], b)
+}
diff --git a/trie/trie.go b/trie/trie.go
new file mode 100644
index 000000000..d89c39775
--- /dev/null
+++ b/trie/trie.go
@@ -0,0 +1,631 @@
+package trie
+
+import (
+	"bytes"
+	"fmt"
+	"sync"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+func ParanoiaCheck(t1 *Trie) (bool, *Trie) {
+	t2 := New(ethutil.Config.Db, "")
+
+	t1.NewIterator().Each(func(key string, v *ethutil.Value) {
+		t2.Update(key, v.Str())
+	})
+
+	return bytes.Compare(t2.GetRoot(), t1.GetRoot()) == 0, t2
+}
+
+func (s *Cache) Len() int {
+	return len(s.nodes)
+}
+
+// TODO
+// A StateObject is an object that has a state root
+// This is goig to be the object for the second level caching (the caching of object which have a state such as contracts)
+type StateObject interface {
+	State() *Trie
+	Sync()
+	Undo()
+}
+
+type Node struct {
+	Key   []byte
+	Value *ethutil.Value
+	Dirty bool
+}
+
+func NewNode(key []byte, val *ethutil.Value, dirty bool) *Node {
+	return &Node{Key: key, Value: val, Dirty: dirty}
+}
+
+func (n *Node) Copy() *Node {
+	return NewNode(n.Key, n.Value, n.Dirty)
+}
+
+type Cache struct {
+	nodes   map[string]*Node
+	db      ethutil.Database
+	IsDirty bool
+}
+
+func NewCache(db ethutil.Database) *Cache {
+	return &Cache{db: db, nodes: make(map[string]*Node)}
+}
+
+func (cache *Cache) PutValue(v interface{}, force bool) interface{} {
+	value := ethutil.NewValue(v)
+
+	enc := value.Encode()
+	if len(enc) >= 32 || force {
+		sha := crypto.Sha3(enc)
+
+		cache.nodes[string(sha)] = NewNode(sha, value, true)
+		cache.IsDirty = true
+
+		return sha
+	}
+
+	return v
+}
+
+func (cache *Cache) Put(v interface{}) interface{} {
+	return cache.PutValue(v, false)
+}
+
+func (cache *Cache) Get(key []byte) *ethutil.Value {
+	// First check if the key is the cache
+	if cache.nodes[string(key)] != nil {
+		return cache.nodes[string(key)].Value
+	}
+
+	// Get the key of the database instead and cache it
+	data, _ := cache.db.Get(key)
+	// Create the cached value
+	value := ethutil.NewValueFromBytes(data)
+
+	defer func() {
+		if r := recover(); r != nil {
+			fmt.Println("RECOVER GET", cache, cache.nodes)
+			panic("bye")
+		}
+	}()
+	// Create caching node
+	cache.nodes[string(key)] = NewNode(key, value, true)
+
+	return value
+}
+
+func (cache *Cache) Delete(key []byte) {
+	delete(cache.nodes, string(key))
+
+	cache.db.Delete(key)
+}
+
+func (cache *Cache) Commit() {
+	// Don't try to commit if it isn't dirty
+	if !cache.IsDirty {
+		return
+	}
+
+	for key, node := range cache.nodes {
+		if node.Dirty {
+			cache.db.Put([]byte(key), node.Value.Encode())
+			node.Dirty = false
+		}
+	}
+	cache.IsDirty = false
+
+	// If the nodes grows beyond the 200 entries we simple empty it
+	// FIXME come up with something better
+	if len(cache.nodes) > 200 {
+		cache.nodes = make(map[string]*Node)
+	}
+}
+
+func (cache *Cache) Undo() {
+	for key, node := range cache.nodes {
+		if node.Dirty {
+			delete(cache.nodes, key)
+		}
+	}
+	cache.IsDirty = false
+}
+
+// A (modified) Radix Trie implementation. The Trie implements
+// a caching mechanism and will used cached values if they are
+// present. If a node is not present in the cache it will try to
+// fetch it from the database and store the cached value.
+// Please note that the data isn't persisted unless `Sync` is
+// explicitly called.
+type Trie struct {
+	mut      sync.RWMutex
+	prevRoot interface{}
+	Root     interface{}
+	//db   Database
+	cache *Cache
+}
+
+func copyRoot(root interface{}) interface{} {
+	var prevRootCopy interface{}
+	if b, ok := root.([]byte); ok {
+		prevRootCopy = ethutil.CopyBytes(b)
+	} else {
+		prevRootCopy = root
+	}
+
+	return prevRootCopy
+}
+
+func New(db ethutil.Database, Root interface{}) *Trie {
+	// Make absolute sure the root is copied
+	r := copyRoot(Root)
+	p := copyRoot(Root)
+
+	trie := &Trie{cache: NewCache(db), Root: r, prevRoot: p}
+	trie.setRoot(Root)
+
+	return trie
+}
+
+func (self *Trie) setRoot(root interface{}) {
+	switch t := root.(type) {
+	case string:
+		/*
+			if t == "" {
+				root = crypto.Sha3(ethutil.Encode(""))
+			}
+		*/
+		self.Root = []byte(t)
+	case []byte:
+		self.Root = root
+	default:
+		self.Root = self.cache.PutValue(root, true)
+	}
+}
+
+/*
+ * Public (query) interface functions
+ */
+
+func (t *Trie) Update(key, value string) {
+	t.mut.Lock()
+	defer t.mut.Unlock()
+
+	k := CompactHexDecode(key)
+
+	var root interface{}
+	if value != "" {
+		root = t.UpdateState(t.Root, k, value)
+	} else {
+		root = t.deleteState(t.Root, k)
+	}
+	t.setRoot(root)
+}
+
+func (t *Trie) Get(key string) string {
+	t.mut.Lock()
+	defer t.mut.Unlock()
+
+	k := CompactHexDecode(key)
+	c := ethutil.NewValue(t.getState(t.Root, k))
+
+	return c.Str()
+}
+
+func (t *Trie) Delete(key string) {
+	t.mut.Lock()
+	defer t.mut.Unlock()
+
+	k := CompactHexDecode(key)
+
+	root := t.deleteState(t.Root, k)
+	t.setRoot(root)
+}
+
+func (self *Trie) GetRoot() []byte {
+	switch t := self.Root.(type) {
+	case string:
+		if t == "" {
+			return crypto.Sha3(ethutil.Encode(""))
+		}
+		return []byte(t)
+	case []byte:
+		if len(t) == 0 {
+			return crypto.Sha3(ethutil.Encode(""))
+		}
+
+		return t
+	default:
+		panic(fmt.Sprintf("invalid root type %T (%v)", self.Root, self.Root))
+	}
+}
+
+// Simple compare function which creates a rlp value out of the evaluated objects
+func (t *Trie) Cmp(trie *Trie) bool {
+	return ethutil.NewValue(t.Root).Cmp(ethutil.NewValue(trie.Root))
+}
+
+// Returns a copy of this trie
+func (t *Trie) Copy() *Trie {
+	trie := New(t.cache.db, t.Root)
+	for key, node := range t.cache.nodes {
+		trie.cache.nodes[key] = node.Copy()
+	}
+
+	return trie
+}
+
+// Save the cached value to the database.
+func (t *Trie) Sync() {
+	t.cache.Commit()
+	t.prevRoot = copyRoot(t.Root)
+}
+
+func (t *Trie) Undo() {
+	t.cache.Undo()
+	t.Root = t.prevRoot
+}
+
+func (t *Trie) Cache() *Cache {
+	return t.cache
+}
+
+func (t *Trie) getState(node interface{}, key []byte) interface{} {
+	n := ethutil.NewValue(node)
+	// Return the node if key is empty (= found)
+	if len(key) == 0 || n.IsNil() || n.Len() == 0 {
+		return node
+	}
+
+	currentNode := t.getNode(node)
+	length := currentNode.Len()
+
+	if length == 0 {
+		return ""
+	} else if length == 2 {
+		// Decode the key
+		k := CompactDecode(currentNode.Get(0).Str())
+		v := currentNode.Get(1).Raw()
+
+		if len(key) >= len(k) && bytes.Equal(k, key[:len(k)]) { //CompareIntSlice(k, key[:len(k)]) {
+			return t.getState(v, key[len(k):])
+		} else {
+			return ""
+		}
+	} else if length == 17 {
+		return t.getState(currentNode.Get(int(key[0])).Raw(), key[1:])
+	}
+
+	// It shouldn't come this far
+	panic("unexpected return")
+}
+
+func (t *Trie) getNode(node interface{}) *ethutil.Value {
+	n := ethutil.NewValue(node)
+
+	if !n.Get(0).IsNil() {
+		return n
+	}
+
+	str := n.Str()
+	if len(str) == 0 {
+		return n
+	} else if len(str) < 32 {
+		return ethutil.NewValueFromBytes([]byte(str))
+	}
+
+	data := t.cache.Get(n.Bytes())
+
+	return data
+}
+
+func (t *Trie) UpdateState(node interface{}, key []byte, value string) interface{} {
+	return t.InsertState(node, key, value)
+}
+
+func (t *Trie) Put(node interface{}) interface{} {
+	return t.cache.Put(node)
+
+}
+
+func EmptyStringSlice(l int) []interface{} {
+	slice := make([]interface{}, l)
+	for i := 0; i < l; i++ {
+		slice[i] = ""
+	}
+	return slice
+}
+
+func (t *Trie) InsertState(node interface{}, key []byte, value interface{}) interface{} {
+	if len(key) == 0 {
+		return value
+	}
+
+	// New node
+	n := ethutil.NewValue(node)
+	if node == nil || n.Len() == 0 {
+		newNode := []interface{}{CompactEncode(key), value}
+
+		return t.Put(newNode)
+	}
+
+	currentNode := t.getNode(node)
+	// Check for "special" 2 slice type node
+	if currentNode.Len() == 2 {
+		// Decode the key
+
+		k := CompactDecode(currentNode.Get(0).Str())
+		v := currentNode.Get(1).Raw()
+
+		// Matching key pair (ie. there's already an object with this key)
+		if bytes.Equal(k, key) { //CompareIntSlice(k, key) {
+			newNode := []interface{}{CompactEncode(key), value}
+			return t.Put(newNode)
+		}
+
+		var newHash interface{}
+		matchingLength := MatchingNibbleLength(key, k)
+		if matchingLength == len(k) {
+			// Insert the hash, creating a new node
+			newHash = t.InsertState(v, key[matchingLength:], value)
+		} else {
+			// Expand the 2 length slice to a 17 length slice
+			oldNode := t.InsertState("", k[matchingLength+1:], v)
+			newNode := t.InsertState("", key[matchingLength+1:], value)
+			// Create an expanded slice
+			scaledSlice := EmptyStringSlice(17)
+			// Set the copied and new node
+			scaledSlice[k[matchingLength]] = oldNode
+			scaledSlice[key[matchingLength]] = newNode
+
+			newHash = t.Put(scaledSlice)
+		}
+
+		if matchingLength == 0 {
+			// End of the chain, return
+			return newHash
+		} else {
+			newNode := []interface{}{CompactEncode(key[:matchingLength]), newHash}
+			return t.Put(newNode)
+		}
+	} else {
+
+		// Copy the current node over to the new node and replace the first nibble in the key
+		newNode := EmptyStringSlice(17)
+
+		for i := 0; i < 17; i++ {
+			cpy := currentNode.Get(i).Raw()
+			if cpy != nil {
+				newNode[i] = cpy
+			}
+		}
+
+		newNode[key[0]] = t.InsertState(currentNode.Get(int(key[0])).Raw(), key[1:], value)
+
+		return t.Put(newNode)
+	}
+
+	panic("unexpected end")
+}
+
+func (t *Trie) deleteState(node interface{}, key []byte) interface{} {
+	if len(key) == 0 {
+		return ""
+	}
+
+	// New node
+	n := ethutil.NewValue(node)
+	//if node == nil || (n.Type() == reflect.String && (n.Str() == "" || n.Get(0).IsNil())) || n.Len() == 0 {
+	if node == nil || n.Len() == 0 {
+		//return nil
+		//fmt.Printf("<empty ret> %x %d\n", n, len(n.Bytes()))
+
+		return ""
+	}
+
+	currentNode := t.getNode(node)
+	// Check for "special" 2 slice type node
+	if currentNode.Len() == 2 {
+		// Decode the key
+		k := CompactDecode(currentNode.Get(0).Str())
+		v := currentNode.Get(1).Raw()
+
+		// Matching key pair (ie. there's already an object with this key)
+		if bytes.Equal(k, key) { //CompareIntSlice(k, key) {
+			//fmt.Printf("<delete ret> %x\n", v)
+
+			return ""
+		} else if bytes.Equal(key[:len(k)], k) { //CompareIntSlice(key[:len(k)], k) {
+			hash := t.deleteState(v, key[len(k):])
+			child := t.getNode(hash)
+
+			var newNode []interface{}
+			if child.Len() == 2 {
+				newKey := append(k, CompactDecode(child.Get(0).Str())...)
+				newNode = []interface{}{CompactEncode(newKey), child.Get(1).Raw()}
+			} else {
+				newNode = []interface{}{currentNode.Get(0).Str(), hash}
+			}
+
+			//fmt.Printf("%x\n", newNode)
+
+			return t.Put(newNode)
+		} else {
+			return node
+		}
+	} else {
+		// Copy the current node over to the new node and replace the first nibble in the key
+		n := EmptyStringSlice(17)
+		var newNode []interface{}
+
+		for i := 0; i < 17; i++ {
+			cpy := currentNode.Get(i).Raw()
+			if cpy != nil {
+				n[i] = cpy
+			}
+		}
+
+		n[key[0]] = t.deleteState(n[key[0]], key[1:])
+		amount := -1
+		for i := 0; i < 17; i++ {
+			if n[i] != "" {
+				if amount == -1 {
+					amount = i
+				} else {
+					amount = -2
+				}
+			}
+		}
+		if amount == 16 {
+			newNode = []interface{}{CompactEncode([]byte{16}), n[amount]}
+		} else if amount >= 0 {
+			child := t.getNode(n[amount])
+			if child.Len() == 17 {
+				newNode = []interface{}{CompactEncode([]byte{byte(amount)}), n[amount]}
+			} else if child.Len() == 2 {
+				key := append([]byte{byte(amount)}, CompactDecode(child.Get(0).Str())...)
+				newNode = []interface{}{CompactEncode(key), child.Get(1).Str()}
+			}
+
+		} else {
+			newNode = n
+		}
+
+		//fmt.Printf("%x\n", newNode)
+		return t.Put(newNode)
+	}
+
+	panic("unexpected return")
+}
+
+type TrieIterator struct {
+	trie  *Trie
+	key   string
+	value string
+
+	shas   [][]byte
+	values []string
+
+	lastNode []byte
+}
+
+func (t *Trie) NewIterator() *TrieIterator {
+	return &TrieIterator{trie: t}
+}
+
+func (self *Trie) Iterator() *Iterator {
+	return NewIterator(self)
+}
+
+// Some time in the near future this will need refactoring :-)
+// XXX Note to self, IsSlice == inline node. Str == sha3 to node
+func (it *TrieIterator) workNode(currentNode *ethutil.Value) {
+	if currentNode.Len() == 2 {
+		k := CompactDecode(currentNode.Get(0).Str())
+
+		if currentNode.Get(1).Str() == "" {
+			it.workNode(currentNode.Get(1))
+		} else {
+			if k[len(k)-1] == 16 {
+				it.values = append(it.values, currentNode.Get(1).Str())
+			} else {
+				it.shas = append(it.shas, currentNode.Get(1).Bytes())
+				it.getNode(currentNode.Get(1).Bytes())
+			}
+		}
+	} else {
+		for i := 0; i < currentNode.Len(); i++ {
+			if i == 16 && currentNode.Get(i).Len() != 0 {
+				it.values = append(it.values, currentNode.Get(i).Str())
+			} else {
+				if currentNode.Get(i).Str() == "" {
+					it.workNode(currentNode.Get(i))
+				} else {
+					val := currentNode.Get(i).Str()
+					if val != "" {
+						it.shas = append(it.shas, currentNode.Get(1).Bytes())
+						it.getNode([]byte(val))
+					}
+				}
+			}
+		}
+	}
+}
+
+func (it *TrieIterator) getNode(node []byte) {
+	currentNode := it.trie.cache.Get(node)
+	it.workNode(currentNode)
+}
+
+func (it *TrieIterator) Collect() [][]byte {
+	if it.trie.Root == "" {
+		return nil
+	}
+
+	it.getNode(ethutil.NewValue(it.trie.Root).Bytes())
+
+	return it.shas
+}
+
+func (it *TrieIterator) Purge() int {
+	shas := it.Collect()
+	for _, sha := range shas {
+		it.trie.cache.Delete(sha)
+	}
+	return len(it.values)
+}
+
+func (it *TrieIterator) Key() string {
+	return ""
+}
+
+func (it *TrieIterator) Value() string {
+	return ""
+}
+
+type EachCallback func(key string, node *ethutil.Value)
+
+func (it *TrieIterator) Each(cb EachCallback) {
+	it.fetchNode(nil, ethutil.NewValue(it.trie.Root).Bytes(), cb)
+}
+
+func (it *TrieIterator) fetchNode(key []byte, node []byte, cb EachCallback) {
+	it.iterateNode(key, it.trie.cache.Get(node), cb)
+}
+
+func (it *TrieIterator) iterateNode(key []byte, currentNode *ethutil.Value, cb EachCallback) {
+	if currentNode.Len() == 2 {
+		k := CompactDecode(currentNode.Get(0).Str())
+
+		pk := append(key, k...)
+		if currentNode.Get(1).Len() != 0 && currentNode.Get(1).Str() == "" {
+			it.iterateNode(pk, currentNode.Get(1), cb)
+		} else {
+			if k[len(k)-1] == 16 {
+				cb(DecodeCompact(pk), currentNode.Get(1))
+			} else {
+				it.fetchNode(pk, currentNode.Get(1).Bytes(), cb)
+			}
+		}
+	} else {
+		for i := 0; i < currentNode.Len(); i++ {
+			pk := append(key, byte(i))
+			if i == 16 && currentNode.Get(i).Len() != 0 {
+				cb(DecodeCompact(pk), currentNode.Get(i))
+			} else {
+				if currentNode.Get(i).Len() != 0 && currentNode.Get(i).Str() == "" {
+					it.iterateNode(pk, currentNode.Get(i), cb)
+				} else {
+					val := currentNode.Get(i).Str()
+					if val != "" {
+						it.fetchNode(pk, []byte(val), cb)
+					}
+				}
+			}
+		}
+	}
+}
diff --git a/trie/trie_test.go b/trie/trie_test.go
new file mode 100644
index 000000000..207d41f30
--- /dev/null
+++ b/trie/trie_test.go
@@ -0,0 +1,447 @@
+package trie
+
+import (
+	"bytes"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"math/rand"
+	"net/http"
+	"testing"
+	"time"
+
+	checker "gopkg.in/check.v1"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+const LONG_WORD = "1234567890abcdefghijklmnopqrstuvwxxzABCEFGHIJKLMNOPQRSTUVWXYZ"
+
+type TrieSuite struct {
+	db   *MemDatabase
+	trie *Trie
+}
+
+type MemDatabase struct {
+	db map[string][]byte
+}
+
+func NewMemDatabase() (*MemDatabase, error) {
+	db := &MemDatabase{db: make(map[string][]byte)}
+	return db, nil
+}
+func (db *MemDatabase) Put(key []byte, value []byte) {
+	db.db[string(key)] = value
+}
+func (db *MemDatabase) Get(key []byte) ([]byte, error) {
+	return db.db[string(key)], nil
+}
+func (db *MemDatabase) Delete(key []byte) error {
+	delete(db.db, string(key))
+	return nil
+}
+func (db *MemDatabase) Print()              {}
+func (db *MemDatabase) Close()              {}
+func (db *MemDatabase) LastKnownTD() []byte { return nil }
+
+func NewTrie() (*MemDatabase, *Trie) {
+	db, _ := NewMemDatabase()
+	return db, New(db, "")
+}
+
+func (s *TrieSuite) SetUpTest(c *checker.C) {
+	s.db, s.trie = NewTrie()
+}
+
+func (s *TrieSuite) TestTrieSync(c *checker.C) {
+	s.trie.Update("dog", LONG_WORD)
+	c.Assert(s.db.db, checker.HasLen, 0, checker.Commentf("Expected no data in database"))
+	s.trie.Sync()
+	c.Assert(s.db.db, checker.HasLen, 3)
+}
+
+func (s *TrieSuite) TestTrieDirtyTracking(c *checker.C) {
+	s.trie.Update("dog", LONG_WORD)
+	c.Assert(s.trie.cache.IsDirty, checker.Equals, true, checker.Commentf("Expected no data in database"))
+
+	s.trie.Sync()
+	c.Assert(s.trie.cache.IsDirty, checker.Equals, false, checker.Commentf("Expected trie to be dirty"))
+
+	s.trie.Update("test", LONG_WORD)
+	s.trie.cache.Undo()
+	c.Assert(s.trie.cache.IsDirty, checker.Equals, false)
+}
+
+func (s *TrieSuite) TestTrieReset(c *checker.C) {
+	s.trie.Update("cat", LONG_WORD)
+	c.Assert(s.trie.cache.nodes, checker.HasLen, 1, checker.Commentf("Expected cached nodes"))
+
+	s.trie.cache.Undo()
+	c.Assert(s.trie.cache.nodes, checker.HasLen, 0, checker.Commentf("Expected no nodes after undo"))
+}
+
+func (s *TrieSuite) TestTrieGet(c *checker.C) {
+	s.trie.Update("cat", LONG_WORD)
+	x := s.trie.Get("cat")
+	c.Assert(x, checker.DeepEquals, LONG_WORD)
+}
+
+func (s *TrieSuite) TestTrieUpdating(c *checker.C) {
+	s.trie.Update("cat", LONG_WORD)
+	s.trie.Update("cat", LONG_WORD+"1")
+	x := s.trie.Get("cat")
+	c.Assert(x, checker.DeepEquals, LONG_WORD+"1")
+}
+
+func (s *TrieSuite) TestTrieCmp(c *checker.C) {
+	_, trie1 := NewTrie()
+	_, trie2 := NewTrie()
+
+	trie1.Update("doge", LONG_WORD)
+	trie2.Update("doge", LONG_WORD)
+	c.Assert(trie1, checker.DeepEquals, trie2)
+
+	trie1.Update("dog", LONG_WORD)
+	trie2.Update("cat", LONG_WORD)
+	c.Assert(trie1, checker.Not(checker.DeepEquals), trie2)
+}
+
+func (s *TrieSuite) TestTrieDelete(c *checker.C) {
+	s.trie.Update("cat", LONG_WORD)
+	exp := s.trie.Root
+	s.trie.Update("dog", LONG_WORD)
+	s.trie.Delete("dog")
+	c.Assert(s.trie.Root, checker.DeepEquals, exp)
+
+	s.trie.Update("dog", LONG_WORD)
+	exp = s.trie.Root
+	s.trie.Update("dude", LONG_WORD)
+	s.trie.Delete("dude")
+	c.Assert(s.trie.Root, checker.DeepEquals, exp)
+}
+
+func (s *TrieSuite) TestTrieDeleteWithValue(c *checker.C) {
+	s.trie.Update("c", LONG_WORD)
+	exp := s.trie.Root
+	s.trie.Update("ca", LONG_WORD)
+	s.trie.Update("cat", LONG_WORD)
+	s.trie.Delete("ca")
+	s.trie.Delete("cat")
+	c.Assert(s.trie.Root, checker.DeepEquals, exp)
+}
+
+func (s *TrieSuite) TestTriePurge(c *checker.C) {
+	s.trie.Update("c", LONG_WORD)
+	s.trie.Update("ca", LONG_WORD)
+	s.trie.Update("cat", LONG_WORD)
+
+	lenBefore := len(s.trie.cache.nodes)
+	it := s.trie.NewIterator()
+	num := it.Purge()
+	c.Assert(num, checker.Equals, 3)
+	c.Assert(len(s.trie.cache.nodes), checker.Equals, lenBefore)
+}
+
+func h(str string) string {
+	d, err := hex.DecodeString(str)
+	if err != nil {
+		panic(err)
+	}
+
+	return string(d)
+}
+
+func get(in string) (out string) {
+	if len(in) > 2 && in[:2] == "0x" {
+		out = h(in[2:])
+	} else {
+		out = in
+	}
+
+	return
+}
+
+type TrieTest struct {
+	Name string
+	In   map[string]string
+	Root string
+}
+
+func CreateTest(name string, data []byte) (TrieTest, error) {
+	t := TrieTest{Name: name}
+	err := json.Unmarshal(data, &t)
+	if err != nil {
+		return TrieTest{}, fmt.Errorf("%v", err)
+	}
+
+	return t, nil
+}
+
+func CreateTests(uri string, cb func(TrieTest)) map[string]TrieTest {
+	resp, err := http.Get(uri)
+	if err != nil {
+		panic(err)
+	}
+	defer resp.Body.Close()
+
+	data, err := ioutil.ReadAll(resp.Body)
+
+	var objmap map[string]*json.RawMessage
+	err = json.Unmarshal(data, &objmap)
+	if err != nil {
+		panic(err)
+	}
+
+	tests := make(map[string]TrieTest)
+	for name, testData := range objmap {
+		test, err := CreateTest(name, *testData)
+		if err != nil {
+			panic(err)
+		}
+
+		if cb != nil {
+			cb(test)
+		}
+		tests[name] = test
+	}
+
+	return tests
+}
+
+func RandomData() [][]string {
+	data := [][]string{
+		{"0x000000000000000000000000ec4f34c97e43fbb2816cfd95e388353c7181dab1", "0x4e616d6552656700000000000000000000000000000000000000000000000000"},
+		{"0x0000000000000000000000000000000000000000000000000000000000000045", "0x22b224a1420a802ab51d326e29fa98e34c4f24ea"},
+		{"0x0000000000000000000000000000000000000000000000000000000000000046", "0x67706c2076330000000000000000000000000000000000000000000000000000"},
+		{"0x000000000000000000000000697c7b8c961b56f675d570498424ac8de1a918f6", "0x6f6f6f6820736f2067726561742c207265616c6c6c793f000000000000000000"},
+		{"0x0000000000000000000000007ef9e639e2733cb34e4dfc576d4b23f72db776b2", "0x4655474156000000000000000000000000000000000000000000000000000000"},
+		{"0x6f6f6f6820736f2067726561742c207265616c6c6c793f000000000000000000", "0x697c7b8c961b56f675d570498424ac8de1a918f6"},
+		{"0x4655474156000000000000000000000000000000000000000000000000000000", "0x7ef9e639e2733cb34e4dfc576d4b23f72db776b2"},
+		{"0x4e616d6552656700000000000000000000000000000000000000000000000000", "0xec4f34c97e43fbb2816cfd95e388353c7181dab1"},
+	}
+
+	var c [][]string
+	for len(data) != 0 {
+		e := rand.Intn(len(data))
+		c = append(c, data[e])
+
+		copy(data[e:], data[e+1:])
+		data[len(data)-1] = nil
+		data = data[:len(data)-1]
+	}
+
+	return c
+}
+
+const MaxTest = 1000
+
+// This test insert data in random order and seeks to find indifferences between the different tries
+func (s *TrieSuite) TestRegression(c *checker.C) {
+	rand.Seed(time.Now().Unix())
+
+	roots := make(map[string]int)
+	for i := 0; i < MaxTest; i++ {
+		_, trie := NewTrie()
+		data := RandomData()
+
+		for _, test := range data {
+			trie.Update(test[0], test[1])
+		}
+		trie.Delete("0x4e616d6552656700000000000000000000000000000000000000000000000000")
+
+		roots[string(trie.Root.([]byte))] += 1
+	}
+
+	c.Assert(len(roots) <= 1, checker.Equals, true)
+	// if len(roots) > 1 {
+	// 	for root, num := range roots {
+	// 		t.Errorf("%x => %d\n", root, num)
+	// 	}
+	// }
+}
+
+func (s *TrieSuite) TestDelete(c *checker.C) {
+	s.trie.Update("a", "jeffreytestlongstring")
+	s.trie.Update("aa", "otherstring")
+	s.trie.Update("aaa", "othermorestring")
+	s.trie.Update("aabbbbccc", "hithere")
+	s.trie.Update("abbcccdd", "hstanoehutnaheoustnh")
+	s.trie.Update("rnthaoeuabbcccdd", "hstanoehutnaheoustnh")
+	s.trie.Update("rneuabbcccdd", "hstanoehutnaheoustnh")
+	s.trie.Update("rneuabboeusntahoeucccdd", "hstanoehutnaheoustnh")
+	s.trie.Update("rnxabboeusntahoeucccdd", "hstanoehutnaheoustnh")
+	s.trie.Delete("aaboaestnuhbccc")
+	s.trie.Delete("a")
+	s.trie.Update("a", "nthaonethaosentuh")
+	s.trie.Update("c", "shtaosntehua")
+	s.trie.Delete("a")
+	s.trie.Update("aaaa", "testmegood")
+
+	_, t2 := NewTrie()
+	s.trie.NewIterator().Each(func(key string, v *ethutil.Value) {
+		if key == "aaaa" {
+			t2.Update(key, v.Str())
+		} else {
+			t2.Update(key, v.Str())
+		}
+	})
+
+	a := ethutil.NewValue(s.trie.Root).Bytes()
+	b := ethutil.NewValue(t2.Root).Bytes()
+
+	c.Assert(a, checker.DeepEquals, b)
+}
+
+func (s *TrieSuite) TestTerminator(c *checker.C) {
+	key := CompactDecode("hello")
+	c.Assert(HasTerm(key), checker.Equals, true, checker.Commentf("Expected %v to have a terminator", key))
+}
+
+func (s *TrieSuite) TestIt(c *checker.C) {
+	s.trie.Update("cat", "cat")
+	s.trie.Update("doge", "doge")
+	s.trie.Update("wallace", "wallace")
+	it := s.trie.Iterator()
+
+	inputs := []struct {
+		In, Out string
+	}{
+		{"", "cat"},
+		{"bobo", "cat"},
+		{"c", "cat"},
+		{"car", "cat"},
+		{"catering", "doge"},
+		{"w", "wallace"},
+		{"wallace123", ""},
+	}
+
+	for _, test := range inputs {
+		res := string(it.Next(test.In))
+		c.Assert(res, checker.Equals, test.Out)
+	}
+}
+
+func (s *TrieSuite) TestBeginsWith(c *checker.C) {
+	a := CompactDecode("hello")
+	b := CompactDecode("hel")
+
+	c.Assert(BeginsWith(a, b), checker.Equals, false)
+	c.Assert(BeginsWith(b, a), checker.Equals, true)
+}
+
+func (s *TrieSuite) TestItems(c *checker.C) {
+	s.trie.Update("A", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
+	exp := "d23786fb4a010da3ce639d66d5e904a11dbc02746d1ce25029e53290cabf28ab"
+
+	c.Assert(s.trie.GetRoot(), checker.DeepEquals, ethutil.Hex2Bytes(exp))
+}
+
+/*
+func TestRndCase(t *testing.T) {
+	_, trie := NewTrie()
+
+	data := []struct{ k, v string }{
+		{"0000000000000000000000000000000000000000000000000000000000000001", "a07573657264617461000000000000000000000000000000000000000000000000"},
+		{"0000000000000000000000000000000000000000000000000000000000000003", "8453bb5b31"},
+		{"0000000000000000000000000000000000000000000000000000000000000004", "850218711a00"},
+		{"0000000000000000000000000000000000000000000000000000000000000005", "9462d7705bd0b3ecbc51a8026a25597cb28a650c79"},
+		{"0000000000000000000000000000000000000000000000000000000000000010", "947e70f9460402290a3e487dae01f610a1a8218fda"},
+		{"0000000000000000000000000000000000000000000000000000000000000111", "01"},
+		{"0000000000000000000000000000000000000000000000000000000000000112", "a053656e6174650000000000000000000000000000000000000000000000000000"},
+		{"0000000000000000000000000000000000000000000000000000000000000113", "a053656e6174650000000000000000000000000000000000000000000000000000"},
+		{"53656e6174650000000000000000000000000000000000000000000000000000", "94977e3f62f5e1ed7953697430303a3cfa2b5b736e"},
+	}
+	for _, e := range data {
+		trie.Update(string(ethutil.Hex2Bytes(e.k)), string(ethutil.Hex2Bytes(e.v)))
+	}
+
+	fmt.Printf("root after update %x\n", trie.Root)
+	trie.NewIterator().Each(func(k string, v *ethutil.Value) {
+		fmt.Printf("%x %x\n", k, v.Bytes())
+	})
+
+	data = []struct{ k, v string }{
+		{"0000000000000000000000000000000000000000000000000000000000000112", ""},
+		{"436974697a656e73000000000000000000000000000000000000000000000001", ""},
+		{"436f757274000000000000000000000000000000000000000000000000000002", ""},
+		{"53656e6174650000000000000000000000000000000000000000000000000000", ""},
+		{"436f757274000000000000000000000000000000000000000000000000000000", ""},
+		{"53656e6174650000000000000000000000000000000000000000000000000001", ""},
+		{"0000000000000000000000000000000000000000000000000000000000000113", ""},
+		{"436974697a656e73000000000000000000000000000000000000000000000000", ""},
+		{"436974697a656e73000000000000000000000000000000000000000000000002", ""},
+		{"436f757274000000000000000000000000000000000000000000000000000001", ""},
+		{"0000000000000000000000000000000000000000000000000000000000000111", ""},
+		{"53656e6174650000000000000000000000000000000000000000000000000002", ""},
+	}
+
+	for _, e := range data {
+		trie.Delete(string(ethutil.Hex2Bytes(e.k)))
+	}
+
+	fmt.Printf("root after delete %x\n", trie.Root)
+
+	trie.NewIterator().Each(func(k string, v *ethutil.Value) {
+		fmt.Printf("%x %x\n", k, v.Bytes())
+	})
+
+	fmt.Printf("%x\n", trie.Get(string(ethutil.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001"))))
+}
+*/
+
+func TestOtherSomething(t *testing.T) {
+	_, trie := NewTrie()
+
+	vals := []struct{ k, v string }{
+		{"do", "verb"},
+		{"ether", "wookiedoo"},
+		{"horse", "stallion"},
+		{"shaman", "horse"},
+		{"doge", "coin"},
+		{"ether", ""},
+		{"dog", "puppy"},
+		{"shaman", ""},
+	}
+	for _, val := range vals {
+		trie.Update(val.k, val.v)
+	}
+
+	exp := ethutil.Hex2Bytes("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
+	hash := trie.Root.([]byte)
+	if !bytes.Equal(hash, exp) {
+		t.Errorf("expected %x got %x", exp, hash)
+	}
+}
+
+func BenchmarkGets(b *testing.B) {
+	_, trie := NewTrie()
+	vals := []struct{ k, v string }{
+		{"do", "verb"},
+		{"ether", "wookiedoo"},
+		{"horse", "stallion"},
+		{"shaman", "horse"},
+		{"doge", "coin"},
+		{"ether", ""},
+		{"dog", "puppy"},
+		{"shaman", ""},
+		{"somethingveryoddindeedthis is", "myothernodedata"},
+	}
+	for _, val := range vals {
+		trie.Update(val.k, val.v)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		trie.Get("horse")
+	}
+}
+
+func BenchmarkUpdate(b *testing.B) {
+	_, trie := NewTrie()
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		trie.Update(fmt.Sprintf("aaaaaaaaaaaaaaa%d", i), "value")
+	}
+}
diff --git a/types/ethereum.go b/types/ethereum.go
new file mode 100644
index 000000000..ab1254f4c
--- /dev/null
+++ b/types/ethereum.go
@@ -0,0 +1 @@
+package types
diff --git a/ui/filter.go b/ui/filter.go
new file mode 100644
index 000000000..88faad5ca
--- /dev/null
+++ b/ui/filter.go
@@ -0,0 +1,75 @@
+package ui
+
+import (
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+func NewFilterFromMap(object map[string]interface{}, eth core.EthManager) *core.Filter {
+	filter := core.NewFilter(eth)
+
+	if object["earliest"] != nil {
+		val := ethutil.NewValue(object["earliest"])
+		filter.SetEarliestBlock(val.Int())
+	}
+
+	if object["latest"] != nil {
+		val := ethutil.NewValue(object["latest"])
+		filter.SetLatestBlock(val.Int())
+	}
+
+	if object["to"] != nil {
+		val := ethutil.NewValue(object["to"])
+		filter.AddTo(ethutil.Hex2Bytes(val.Str()))
+	}
+
+	if object["from"] != nil {
+		val := ethutil.NewValue(object["from"])
+		filter.AddFrom(ethutil.Hex2Bytes(val.Str()))
+	}
+
+	if object["max"] != nil {
+		val := ethutil.NewValue(object["max"])
+		filter.SetMax(int(val.Uint()))
+	}
+
+	if object["skip"] != nil {
+		val := ethutil.NewValue(object["skip"])
+		filter.SetSkip(int(val.Uint()))
+	}
+
+	if object["altered"] != nil {
+		filter.Altered = makeAltered(object["altered"])
+	}
+
+	return filter
+}
+
+// Conversion methodn
+func mapToAccountChange(m map[string]interface{}) (d core.AccountChange) {
+	if str, ok := m["id"].(string); ok {
+		d.Address = ethutil.Hex2Bytes(str)
+	}
+
+	if str, ok := m["at"].(string); ok {
+		d.StateAddress = ethutil.Hex2Bytes(str)
+	}
+
+	return
+}
+
+// data can come in in the following formats:
+// ["aabbccdd", {id: "ccddee", at: "11223344"}], "aabbcc", {id: "ccddee", at: "1122"}
+func makeAltered(v interface{}) (d []core.AccountChange) {
+	if str, ok := v.(string); ok {
+		d = append(d, core.AccountChange{ethutil.Hex2Bytes(str), nil})
+	} else if obj, ok := v.(map[string]interface{}); ok {
+		d = append(d, mapToAccountChange(obj))
+	} else if slice, ok := v.([]interface{}); ok {
+		for _, item := range slice {
+			d = append(d, makeAltered(item)...)
+		}
+	}
+
+	return
+}
diff --git a/ui/qt/filter.go b/ui/qt/filter.go
new file mode 100644
index 000000000..c68936401
--- /dev/null
+++ b/ui/qt/filter.go
@@ -0,0 +1,38 @@
+package qt
+
+import (
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/ui"
+	"gopkg.in/qml.v1"
+)
+
+func NewFilterFromMap(object map[string]interface{}, eth core.EthManager) *core.Filter {
+	filter := ui.NewFilterFromMap(object, eth)
+
+	if object["altered"] != nil {
+		filter.Altered = makeAltered(object["altered"])
+	}
+
+	return filter
+}
+
+func makeAltered(v interface{}) (d []core.AccountChange) {
+	if qList, ok := v.(*qml.List); ok {
+		var s []interface{}
+		qList.Convert(&s)
+
+		fmt.Println(s)
+
+		d = makeAltered(s)
+	} else if qMap, ok := v.(*qml.Map); ok {
+		var m map[string]interface{}
+		qMap.Convert(&m)
+		fmt.Println(m)
+
+		d = makeAltered(m)
+	}
+
+	return
+}
diff --git a/ui/qt/qwhisper/whisper.go b/ui/qt/qwhisper/whisper.go
new file mode 100644
index 000000000..bed23c8a7
--- /dev/null
+++ b/ui/qt/qwhisper/whisper.go
@@ -0,0 +1,70 @@
+package qwhisper
+
+import (
+	"time"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/whisper"
+)
+
+func fromHex(s string) []byte {
+	if len(s) > 1 {
+		return ethutil.Hex2Bytes(s[2:])
+	}
+	return nil
+}
+func toHex(b []byte) string { return "0x" + ethutil.Bytes2Hex(b) }
+
+type Whisper struct {
+	*whisper.Whisper
+}
+
+func New(w *whisper.Whisper) *Whisper {
+	return &Whisper{w}
+}
+
+func (self *Whisper) Post(data string, pow, ttl uint32, to, from string) {
+	msg := whisper.NewMessage(fromHex(data))
+	envelope, err := msg.Seal(time.Duration(pow), whisper.Opts{
+		Ttl:  time.Duration(ttl),
+		To:   crypto.ToECDSAPub(fromHex(to)),
+		From: crypto.ToECDSA(fromHex(from)),
+	})
+	if err != nil {
+		// handle error
+		return
+	}
+
+	if err := self.Whisper.Send(envelope); err != nil {
+		// handle error
+		return
+	}
+}
+
+func (self *Whisper) NewIdentity() string {
+	return toHex(self.Whisper.NewIdentity().D.Bytes())
+}
+
+func (self *Whisper) HasIdentify(key string) bool {
+	return self.Whisper.HasIdentity(crypto.ToECDSA(fromHex(key)))
+}
+
+func (self *Whisper) Watch(opts map[string]interface{}) {
+	filter := filterFromMap(opts)
+	filter.Fn = func(msg *whisper.Message) {
+		// TODO POST TO QT WINDOW
+	}
+	self.Whisper.Watch(filter)
+}
+
+func filterFromMap(opts map[string]interface{}) (f whisper.Filter) {
+	if to, ok := opts["to"].(string); ok {
+		f.To = crypto.ToECDSA(fromHex(to))
+	}
+	if from, ok := opts["from"].(string); ok {
+		f.From = crypto.ToECDSAPub(fromHex(from))
+	}
+
+	return
+}
diff --git a/utils/vm_env.go b/utils/vm_env.go
deleted file mode 100644
index 30568c421..000000000
--- a/utils/vm_env.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package utils
-
-import (
-	"math/big"
-
-	"github.com/ethereum/eth-go/ethchain"
-	"github.com/ethereum/eth-go/ethstate"
-)
-
-type VMEnv struct {
-	state *ethstate.State
-	block *ethchain.Block
-
-	transactor []byte
-	value      *big.Int
-}
-
-func NewEnv(state *ethstate.State, block *ethchain.Block, transactor []byte, value *big.Int) *VMEnv {
-	return &VMEnv{
-		state:      state,
-		block:      block,
-		transactor: transactor,
-		value:      value,
-	}
-}
-
-func (self *VMEnv) Origin() []byte         { return self.transactor }
-func (self *VMEnv) BlockNumber() *big.Int  { return self.block.Number }
-func (self *VMEnv) PrevHash() []byte       { return self.block.PrevHash }
-func (self *VMEnv) Coinbase() []byte       { return self.block.Coinbase }
-func (self *VMEnv) Time() int64            { return self.block.Time }
-func (self *VMEnv) Difficulty() *big.Int   { return self.block.Difficulty }
-func (self *VMEnv) BlockHash() []byte      { return self.block.Hash() }
-func (self *VMEnv) Value() *big.Int        { return self.value }
-func (self *VMEnv) State() *ethstate.State { return self.state }
diff --git a/vm/.ethtest b/vm/.ethtest
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/vm/.ethtest
diff --git a/vm/address.go b/vm/address.go
new file mode 100644
index 000000000..611979c94
--- /dev/null
+++ b/vm/address.go
@@ -0,0 +1,56 @@
+package vm
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+type Address interface {
+	Call(in []byte) []byte
+}
+
+type PrecompiledAccount struct {
+	Gas func(l int) *big.Int
+	fn  func(in []byte) []byte
+}
+
+func (self PrecompiledAccount) Call(in []byte) []byte {
+	return self.fn(in)
+}
+
+var Precompiled = map[string]*PrecompiledAccount{
+	string(ethutil.LeftPadBytes([]byte{1}, 20)): &PrecompiledAccount{func(l int) *big.Int {
+		return GasEcrecover
+	}, ecrecoverFunc},
+	string(ethutil.LeftPadBytes([]byte{2}, 20)): &PrecompiledAccount{func(l int) *big.Int {
+		n := big.NewInt(int64(l+31)/32 + 1)
+		n.Mul(n, GasSha256)
+		return n
+	}, sha256Func},
+	string(ethutil.LeftPadBytes([]byte{3}, 20)): &PrecompiledAccount{func(l int) *big.Int {
+		n := big.NewInt(int64(l+31)/32 + 1)
+		n.Mul(n, GasRipemd)
+		return n
+	}, ripemd160Func},
+}
+
+func sha256Func(in []byte) []byte {
+	return crypto.Sha256(in)
+}
+
+func ripemd160Func(in []byte) []byte {
+	return ethutil.LeftPadBytes(crypto.Ripemd160(in), 32)
+}
+
+func ecrecoverFunc(in []byte) []byte {
+	// In case of an invalid sig. Defaults to return nil
+	defer func() { recover() }()
+
+	hash := in[:32]
+	v := ethutil.BigD(in[32:64]).Bytes()[0] - 27
+	sig := append(in[64:], v)
+
+	return ethutil.LeftPadBytes(crypto.Sha3(crypto.Ecrecover(append(hash, sig...))[1:])[12:], 32)
+}
diff --git a/vm/analysis.go b/vm/analysis.go
new file mode 100644
index 000000000..fef448b7b
--- /dev/null
+++ b/vm/analysis.go
@@ -0,0 +1,35 @@
+package vm
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+func analyseJumpDests(code []byte) (dests map[uint64]*big.Int) {
+	dests = make(map[uint64]*big.Int)
+
+	lp := false
+	var lpv *big.Int
+	for pc := uint64(0); pc < uint64(len(code)); pc++ {
+		var op OpCode = OpCode(code[pc])
+		switch op {
+		case PUSH1, PUSH2, PUSH3, PUSH4, PUSH5, PUSH6, PUSH7, PUSH8, PUSH9, PUSH10, PUSH11, PUSH12, PUSH13, PUSH14, PUSH15, PUSH16, PUSH17, PUSH18, PUSH19, PUSH20, PUSH21, PUSH22, PUSH23, PUSH24, PUSH25, PUSH26, PUSH27, PUSH28, PUSH29, PUSH30, PUSH31, PUSH32:
+			a := uint64(op) - uint64(PUSH1) + 1
+			if uint64(len(code)) > pc+1+a {
+				lpv = ethutil.BigD(code[pc+1 : pc+1+a])
+			}
+
+			pc += a
+			lp = true
+		case JUMP, JUMPI:
+			if lp {
+				dests[pc] = lpv
+			}
+
+		default:
+			lp = false
+		}
+	}
+	return
+}
diff --git a/vm/asm.go b/vm/asm.go
new file mode 100644
index 000000000..a94f01d3d
--- /dev/null
+++ b/vm/asm.go
@@ -0,0 +1,45 @@
+package vm
+
+import (
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+func Disassemble(script []byte) (asm []string) {
+	pc := new(big.Int)
+	for {
+		if pc.Cmp(big.NewInt(int64(len(script)))) >= 0 {
+			return
+		}
+
+		// Get the memory location of pc
+		val := script[pc.Int64()]
+		// Get the opcode (it must be an opcode!)
+		op := OpCode(val)
+
+		asm = append(asm, fmt.Sprintf("%v", op))
+
+		switch op {
+		case PUSH1, PUSH2, PUSH3, PUSH4, PUSH5, PUSH6, PUSH7, PUSH8, PUSH9, PUSH10, PUSH11, PUSH12, PUSH13, PUSH14, PUSH15, PUSH16, PUSH17, PUSH18, PUSH19, PUSH20, PUSH21, PUSH22, PUSH23, PUSH24, PUSH25, PUSH26, PUSH27, PUSH28, PUSH29, PUSH30, PUSH31, PUSH32:
+			pc.Add(pc, ethutil.Big1)
+			a := int64(op) - int64(PUSH1) + 1
+			if int(pc.Int64()+a) > len(script) {
+				return nil
+			}
+
+			data := script[pc.Int64() : pc.Int64()+a]
+			if len(data) == 0 {
+				data = []byte{0}
+			}
+			asm = append(asm, fmt.Sprintf("0x%x", data))
+
+			pc.Add(pc, big.NewInt(a-1))
+		}
+
+		pc.Add(pc, ethutil.Big1)
+	}
+
+	return
+}
diff --git a/vm/closure.go b/vm/closure.go
new file mode 100644
index 000000000..97b31ada0
--- /dev/null
+++ b/vm/closure.go
@@ -0,0 +1,107 @@
+package vm
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/state"
+)
+
+type ClosureRef interface {
+	ReturnGas(*big.Int, *big.Int)
+	Address() []byte
+	SetCode([]byte)
+}
+
+type Closure struct {
+	caller  ClosureRef
+	object  ClosureRef
+	Code    []byte
+	message *state.Message
+
+	Gas, UsedGas, Price *big.Int
+
+	Args []byte
+}
+
+// Create a new closure for the given data items
+func NewClosure(msg *state.Message, caller ClosureRef, object ClosureRef, code []byte, gas, price *big.Int) *Closure {
+	c := &Closure{message: msg, caller: caller, object: object, Code: code, Args: nil}
+
+	// Gas should be a pointer so it can safely be reduced through the run
+	// This pointer will be off the state transition
+	c.Gas = gas //new(big.Int).Set(gas)
+	// In most cases price and value are pointers to transaction objects
+	// and we don't want the transaction's values to change.
+	c.Price = new(big.Int).Set(price)
+	c.UsedGas = new(big.Int)
+
+	return c
+}
+
+func (c *Closure) GetOp(x uint64) OpCode {
+	return OpCode(c.GetByte(x))
+}
+
+func (c *Closure) GetByte(x uint64) byte {
+	if x < uint64(len(c.Code)) {
+		return c.Code[x]
+	}
+
+	return 0
+}
+
+func (c *Closure) GetBytes(x, y int) []byte {
+	if x >= len(c.Code) || y >= len(c.Code) {
+		return nil
+	}
+
+	return c.Code[x : x+y]
+}
+
+func (c *Closure) GetRangeValue(x, y uint64) []byte {
+	if x >= uint64(len(c.Code)) || y >= uint64(len(c.Code)) {
+		return nil
+	}
+
+	return c.Code[x : x+y]
+}
+
+func (c *Closure) Return(ret []byte) []byte {
+	// Return the remaining gas to the caller
+	c.caller.ReturnGas(c.Gas, c.Price)
+
+	return ret
+}
+
+/*
+ * Gas functions
+ */
+func (c *Closure) UseGas(gas *big.Int) bool {
+	if c.Gas.Cmp(gas) < 0 {
+		return false
+	}
+
+	// Sub the amount of gas from the remaining
+	c.Gas.Sub(c.Gas, gas)
+	c.UsedGas.Add(c.UsedGas, gas)
+
+	return true
+}
+
+// Implement the caller interface
+func (c *Closure) ReturnGas(gas, price *big.Int) {
+	// Return the gas to the closure
+	c.Gas.Add(c.Gas, gas)
+	c.UsedGas.Sub(c.UsedGas, gas)
+}
+
+/*
+ * Set / Get
+ */
+func (c *Closure) Address() []byte {
+	return c.object.Address()
+}
+
+func (self *Closure) SetCode(code []byte) {
+	self.Code = code
+}
diff --git a/vm/common.go b/vm/common.go
new file mode 100644
index 000000000..529bbdeb1
--- /dev/null
+++ b/vm/common.go
@@ -0,0 +1,75 @@
+package vm
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+)
+
+var vmlogger = logger.NewLogger("VM")
+
+type Type int
+
+const (
+	StandardVmTy Type = iota
+	DebugVmTy
+
+	MaxVmTy
+)
+
+var (
+	GasStep         = big.NewInt(1)
+	GasSha          = big.NewInt(10)
+	GasSLoad        = big.NewInt(20)
+	GasSStore       = big.NewInt(100)
+	GasSStoreRefund = big.NewInt(100)
+	GasBalance      = big.NewInt(20)
+	GasCreate       = big.NewInt(100)
+	GasCall         = big.NewInt(20)
+	GasCreateByte   = big.NewInt(5)
+	GasSha3Byte     = big.NewInt(10)
+	GasSha256Byte   = big.NewInt(50)
+	GasRipemdByte   = big.NewInt(50)
+	GasMemory       = big.NewInt(1)
+	GasData         = big.NewInt(5)
+	GasTx           = big.NewInt(500)
+	GasLog          = big.NewInt(32)
+	GasSha256       = big.NewInt(50)
+	GasRipemd       = big.NewInt(50)
+	GasEcrecover    = big.NewInt(500)
+
+	Pow256 = ethutil.BigPow(2, 256)
+
+	LogTyPretty byte = 0x1
+	LogTyDiff   byte = 0x2
+
+	U256 = ethutil.U256
+	S256 = ethutil.S256
+)
+
+const MaxCallDepth = 1024
+
+func calcMemSize(off, l *big.Int) *big.Int {
+	if l.Cmp(ethutil.Big0) == 0 {
+		return ethutil.Big0
+	}
+
+	return new(big.Int).Add(off, l)
+}
+
+// Simple helper
+func u256(n int64) *big.Int {
+	return big.NewInt(n)
+}
+
+// Mainly used for print variables and passing to Print*
+func toValue(val *big.Int) interface{} {
+	// Let's assume a string on right padded zero's
+	b := val.Bytes()
+	if b[0] != 0 && b[len(b)-1] == 0x0 && b[len(b)-2] == 0x0 {
+		return string(b)
+	}
+
+	return val
+}
diff --git a/vm/debugger.go b/vm/debugger.go
new file mode 100644
index 000000000..9b08634c6
--- /dev/null
+++ b/vm/debugger.go
@@ -0,0 +1,10 @@
+package vm
+
+import "github.com/ethereum/go-ethereum/state"
+
+type Debugger interface {
+	BreakHook(step int, op OpCode, mem *Memory, stack *Stack, object *state.StateObject) bool
+	StepHook(step int, op OpCode, mem *Memory, stack *Stack, object *state.StateObject) bool
+	BreakPoints() []int64
+	SetCode(byteCode []byte)
+}
diff --git a/vm/environment.go b/vm/environment.go
new file mode 100644
index 000000000..969bc5e43
--- /dev/null
+++ b/vm/environment.go
@@ -0,0 +1,81 @@
+package vm
+
+import (
+	"errors"
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+)
+
+type Environment interface {
+	State() *state.StateDB
+
+	Origin() []byte
+	BlockNumber() *big.Int
+	PrevHash() []byte
+	Coinbase() []byte
+	Time() int64
+	Difficulty() *big.Int
+	BlockHash() []byte
+	GasLimit() *big.Int
+	Transfer(from, to Account, amount *big.Int) error
+	AddLog(state.Log)
+
+	Depth() int
+	SetDepth(i int)
+
+	Call(me ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error)
+	CallCode(me ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error)
+	Create(me ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, ClosureRef)
+}
+
+type Object interface {
+	GetStorage(key *big.Int) *ethutil.Value
+	SetStorage(key *big.Int, value *ethutil.Value)
+}
+
+type Account interface {
+	SubBalance(amount *big.Int)
+	AddBalance(amount *big.Int)
+	Balance() *big.Int
+}
+
+// generic transfer method
+func Transfer(from, to Account, amount *big.Int) error {
+	if from.Balance().Cmp(amount) < 0 {
+		return errors.New("Insufficient balance in account")
+	}
+
+	from.SubBalance(amount)
+	to.AddBalance(amount)
+
+	return nil
+}
+
+type Log struct {
+	address []byte
+	topics  [][]byte
+	data    []byte
+}
+
+func (self *Log) Address() []byte {
+	return self.address
+}
+
+func (self *Log) Topics() [][]byte {
+	return self.topics
+}
+
+func (self *Log) Data() []byte {
+	return self.data
+}
+
+func (self *Log) RlpData() interface{} {
+	return []interface{}{self.address, ethutil.ByteSliceToInterface(self.topics), self.data}
+}
+
+func (self *Log) String() string {
+	return fmt.Sprintf("[A=%x T=%x D=%x]", self.address, self.topics, self.data)
+}
diff --git a/vm/errors.go b/vm/errors.go
new file mode 100644
index 000000000..ab011bd62
--- /dev/null
+++ b/vm/errors.go
@@ -0,0 +1,51 @@
+package vm
+
+import (
+	"fmt"
+	"math/big"
+)
+
+type OutOfGasError struct {
+	req, has *big.Int
+}
+
+func OOG(req, has *big.Int) OutOfGasError {
+	return OutOfGasError{req, has}
+}
+
+func (self OutOfGasError) Error() string {
+	return fmt.Sprintf("out of gas! require %v, have %v", self.req, self.has)
+}
+
+func IsOOGErr(err error) bool {
+	_, ok := err.(OutOfGasError)
+	return ok
+}
+
+type StackError struct {
+	req, has int
+}
+
+func StackErr(req, has int) StackError {
+	return StackError{req, has}
+}
+
+func (self StackError) Error() string {
+	return fmt.Sprintf("stack error! require %v, have %v", self.req, self.has)
+}
+
+func IsStack(err error) bool {
+	_, ok := err.(StackError)
+	return ok
+}
+
+type DepthError struct{}
+
+func (self DepthError) Error() string {
+	return fmt.Sprintf("Max call depth exceeded (%d)", MaxCallDepth)
+}
+
+func IsDepthErr(err error) bool {
+	_, ok := err.(DepthError)
+	return ok
+}
diff --git a/vm/main_test.go b/vm/main_test.go
new file mode 100644
index 000000000..0ae03bf6a
--- /dev/null
+++ b/vm/main_test.go
@@ -0,0 +1,9 @@
+package vm
+
+import (
+	"testing"
+
+	checker "gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) { checker.TestingT(t) }
diff --git a/vm/stack.go b/vm/stack.go
new file mode 100644
index 000000000..6091479cb
--- /dev/null
+++ b/vm/stack.go
@@ -0,0 +1,179 @@
+package vm
+
+import (
+	"fmt"
+	"math"
+	"math/big"
+)
+
+type OpType int
+
+const (
+	tNorm = iota
+	tData
+	tExtro
+	tCrypto
+)
+
+type TxCallback func(opType OpType) bool
+
+// Simple push/pop stack mechanism
+type Stack struct {
+	data []*big.Int
+}
+
+func NewStack() *Stack {
+	return &Stack{}
+}
+
+func (st *Stack) Data() []*big.Int {
+	return st.data
+}
+
+func (st *Stack) Len() int {
+	return len(st.data)
+}
+
+func (st *Stack) Pop() *big.Int {
+	str := st.data[len(st.data)-1]
+
+	copy(st.data[:len(st.data)-1], st.data[:len(st.data)-1])
+	st.data = st.data[:len(st.data)-1]
+
+	return str
+}
+
+func (st *Stack) Popn() (*big.Int, *big.Int) {
+	ints := st.data[len(st.data)-2:]
+
+	copy(st.data[:len(st.data)-2], st.data[:len(st.data)-2])
+	st.data = st.data[:len(st.data)-2]
+
+	return ints[0], ints[1]
+}
+
+func (st *Stack) Peek() *big.Int {
+	str := st.data[len(st.data)-1]
+
+	return str
+}
+
+func (st *Stack) Peekn() (*big.Int, *big.Int) {
+	ints := st.data[len(st.data)-2:]
+
+	return ints[0], ints[1]
+}
+
+func (st *Stack) Swapn(n int) (*big.Int, *big.Int) {
+	st.data[len(st.data)-n], st.data[len(st.data)-1] = st.data[len(st.data)-1], st.data[len(st.data)-n]
+
+	return st.data[len(st.data)-n], st.data[len(st.data)-1]
+}
+
+func (st *Stack) Dupn(n int) *big.Int {
+	st.Push(st.data[len(st.data)-n])
+
+	return st.Peek()
+}
+
+func (st *Stack) Push(d *big.Int) {
+	st.data = append(st.data, new(big.Int).Set(d))
+}
+
+func (st *Stack) Get(amount *big.Int) []*big.Int {
+	// offset + size <= len(data)
+	length := big.NewInt(int64(len(st.data)))
+	if amount.Cmp(length) <= 0 {
+		start := new(big.Int).Sub(length, amount)
+		return st.data[start.Int64():length.Int64()]
+	}
+
+	return nil
+}
+
+func (st *Stack) Print() {
+	fmt.Println("### stack ###")
+	if len(st.data) > 0 {
+		for i, val := range st.data {
+			fmt.Printf("%-3d  %v\n", i, val)
+		}
+	} else {
+		fmt.Println("-- empty --")
+	}
+	fmt.Println("#############")
+}
+
+type Memory struct {
+	store []byte
+}
+
+func NewMemory() *Memory {
+	return &Memory{nil}
+}
+
+func (m *Memory) Set(offset, size uint64, value []byte) {
+	if len(value) > 0 {
+		totSize := offset + size
+		lenSize := uint64(len(m.store) - 1)
+		if totSize > lenSize {
+			// Calculate the diff between the sizes
+			diff := totSize - lenSize
+			if diff > 0 {
+				// Create a new empty slice and append it
+				newSlice := make([]byte, diff-1)
+				// Resize slice
+				m.store = append(m.store, newSlice...)
+			}
+		}
+		copy(m.store[offset:offset+size], value)
+	}
+}
+
+func (m *Memory) Resize(size uint64) {
+	if uint64(m.Len()) < size {
+		m.store = append(m.store, make([]byte, size-uint64(m.Len()))...)
+	}
+}
+
+func (m *Memory) Get(offset, size int64) []byte {
+	if len(m.store) > int(offset) {
+		end := int(math.Min(float64(len(m.store)), float64(offset+size)))
+
+		return m.store[offset:end]
+	}
+
+	return nil
+}
+
+func (self *Memory) Geti(offset, size int64) (cpy []byte) {
+	if len(self.store) > int(offset) {
+		cpy = make([]byte, size)
+		copy(cpy, self.store[offset:offset+size])
+
+		return
+	}
+
+	return
+}
+
+func (m *Memory) Len() int {
+	return len(m.store)
+}
+
+func (m *Memory) Data() []byte {
+	return m.store
+}
+
+func (m *Memory) Print() {
+	fmt.Printf("### mem %d bytes ###\n", len(m.store))
+	if len(m.store) > 0 {
+		addr := 0
+		for i := 0; i+32 <= len(m.store); i += 32 {
+			fmt.Printf("%03d: % x\n", addr, m.store[i:i+32])
+			addr++
+		}
+	} else {
+		fmt.Println("-- empty --")
+	}
+	fmt.Println("####################")
+}
diff --git a/vm/types.go b/vm/types.go
new file mode 100644
index 000000000..ec9c7e74e
--- /dev/null
+++ b/vm/types.go
@@ -0,0 +1,334 @@
+package vm
+
+import (
+	"fmt"
+)
+
+type OpCode byte
+
+// Op codes
+const (
+	// 0x0 range - arithmetic ops
+	STOP OpCode = iota
+	ADD
+	MUL
+	SUB
+	DIV
+	SDIV
+	MOD
+	SMOD
+	ADDMOD
+	MULMOD
+	EXP
+	SIGNEXTEND
+)
+
+const (
+	LT OpCode = iota + 0x10
+	GT
+	SLT
+	SGT
+	EQ
+	ISZERO
+	AND
+	OR
+	XOR
+	NOT
+	BYTE
+
+	SHA3 = 0x20
+)
+
+const (
+	// 0x30 range - closure state
+	ADDRESS OpCode = 0x30 + iota
+	BALANCE
+	ORIGIN
+	CALLER
+	CALLVALUE
+	CALLDATALOAD
+	CALLDATASIZE
+	CALLDATACOPY
+	CODESIZE
+	CODECOPY
+	GASPRICE
+	EXTCODESIZE
+	EXTCODECOPY
+)
+
+const (
+
+	// 0x40 range - block operations
+	PREVHASH OpCode = 0x40 + iota
+	COINBASE
+	TIMESTAMP
+	NUMBER
+	DIFFICULTY
+	GASLIMIT
+)
+
+const (
+	// 0x50 range - 'storage' and execution
+	POP OpCode = 0x50 + iota
+	MLOAD
+	MSTORE
+	MSTORE8
+	SLOAD
+	SSTORE
+	JUMP
+	JUMPI
+	PC
+	MSIZE
+	GAS
+	JUMPDEST
+)
+
+const (
+	// 0x60 range
+	PUSH1 OpCode = 0x60 + iota
+	PUSH2
+	PUSH3
+	PUSH4
+	PUSH5
+	PUSH6
+	PUSH7
+	PUSH8
+	PUSH9
+	PUSH10
+	PUSH11
+	PUSH12
+	PUSH13
+	PUSH14
+	PUSH15
+	PUSH16
+	PUSH17
+	PUSH18
+	PUSH19
+	PUSH20
+	PUSH21
+	PUSH22
+	PUSH23
+	PUSH24
+	PUSH25
+	PUSH26
+	PUSH27
+	PUSH28
+	PUSH29
+	PUSH30
+	PUSH31
+	PUSH32
+	DUP1
+	DUP2
+	DUP3
+	DUP4
+	DUP5
+	DUP6
+	DUP7
+	DUP8
+	DUP9
+	DUP10
+	DUP11
+	DUP12
+	DUP13
+	DUP14
+	DUP15
+	DUP16
+	SWAP1
+	SWAP2
+	SWAP3
+	SWAP4
+	SWAP5
+	SWAP6
+	SWAP7
+	SWAP8
+	SWAP9
+	SWAP10
+	SWAP11
+	SWAP12
+	SWAP13
+	SWAP14
+	SWAP15
+	SWAP16
+)
+
+const (
+	LOG0 OpCode = 0xa0 + iota
+	LOG1
+	LOG2
+	LOG3
+	LOG4
+)
+
+const (
+	// 0xf0 range - closures
+	CREATE OpCode = 0xf0 + iota
+	CALL
+	CALLCODE
+	RETURN
+
+	// 0x70 range - other
+	SUICIDE = 0xff
+)
+
+// Since the opcodes aren't all in order we can't use a regular slice
+var opCodeToString = map[OpCode]string{
+	// 0x0 range - arithmetic ops
+	STOP:       "STOP",
+	ADD:        "ADD",
+	MUL:        "MUL",
+	SUB:        "SUB",
+	DIV:        "DIV",
+	SDIV:       "SDIV",
+	MOD:        "MOD",
+	SMOD:       "SMOD",
+	EXP:        "EXP",
+	NOT:        "NOT",
+	LT:         "LT",
+	GT:         "GT",
+	SLT:        "SLT",
+	SGT:        "SGT",
+	EQ:         "EQ",
+	ISZERO:     "ISZERO",
+	SIGNEXTEND: "SIGNEXTEND",
+
+	// 0x10 range - bit ops
+	AND:    "AND",
+	OR:     "OR",
+	XOR:    "XOR",
+	BYTE:   "BYTE",
+	ADDMOD: "ADDMOD",
+	MULMOD: "MULMOD",
+
+	// 0x20 range - crypto
+	SHA3: "SHA3",
+
+	// 0x30 range - closure state
+	ADDRESS:      "ADDRESS",
+	BALANCE:      "BALANCE",
+	ORIGIN:       "ORIGIN",
+	CALLER:       "CALLER",
+	CALLVALUE:    "CALLVALUE",
+	CALLDATALOAD: "CALLDATALOAD",
+	CALLDATASIZE: "CALLDATASIZE",
+	CALLDATACOPY: "CALLDATACOPY",
+	CODESIZE:     "CODESIZE",
+	CODECOPY:     "CODECOPY",
+	GASPRICE:     "TXGASPRICE",
+
+	// 0x40 range - block operations
+	PREVHASH:    "PREVHASH",
+	COINBASE:    "COINBASE",
+	TIMESTAMP:   "TIMESTAMP",
+	NUMBER:      "NUMBER",
+	DIFFICULTY:  "DIFFICULTY",
+	GASLIMIT:    "GASLIMIT",
+	EXTCODESIZE: "EXTCODESIZE",
+	EXTCODECOPY: "EXTCODECOPY",
+
+	// 0x50 range - 'storage' and execution
+	POP: "POP",
+	//DUP:     "DUP",
+	//SWAP:    "SWAP",
+	MLOAD:    "MLOAD",
+	MSTORE:   "MSTORE",
+	MSTORE8:  "MSTORE8",
+	SLOAD:    "SLOAD",
+	SSTORE:   "SSTORE",
+	JUMP:     "JUMP",
+	JUMPI:    "JUMPI",
+	PC:       "PC",
+	MSIZE:    "MSIZE",
+	GAS:      "GAS",
+	JUMPDEST: "JUMPDEST",
+
+	// 0x60 range - push
+	PUSH1:  "PUSH1",
+	PUSH2:  "PUSH2",
+	PUSH3:  "PUSH3",
+	PUSH4:  "PUSH4",
+	PUSH5:  "PUSH5",
+	PUSH6:  "PUSH6",
+	PUSH7:  "PUSH7",
+	PUSH8:  "PUSH8",
+	PUSH9:  "PUSH9",
+	PUSH10: "PUSH10",
+	PUSH11: "PUSH11",
+	PUSH12: "PUSH12",
+	PUSH13: "PUSH13",
+	PUSH14: "PUSH14",
+	PUSH15: "PUSH15",
+	PUSH16: "PUSH16",
+	PUSH17: "PUSH17",
+	PUSH18: "PUSH18",
+	PUSH19: "PUSH19",
+	PUSH20: "PUSH20",
+	PUSH21: "PUSH21",
+	PUSH22: "PUSH22",
+	PUSH23: "PUSH23",
+	PUSH24: "PUSH24",
+	PUSH25: "PUSH25",
+	PUSH26: "PUSH26",
+	PUSH27: "PUSH27",
+	PUSH28: "PUSH28",
+	PUSH29: "PUSH29",
+	PUSH30: "PUSH30",
+	PUSH31: "PUSH31",
+	PUSH32: "PUSH32",
+
+	DUP1:  "DUP1",
+	DUP2:  "DUP2",
+	DUP3:  "DUP3",
+	DUP4:  "DUP4",
+	DUP5:  "DUP5",
+	DUP6:  "DUP6",
+	DUP7:  "DUP7",
+	DUP8:  "DUP8",
+	DUP9:  "DUP9",
+	DUP10: "DUP10",
+	DUP11: "DUP11",
+	DUP12: "DUP12",
+	DUP13: "DUP13",
+	DUP14: "DUP14",
+	DUP15: "DUP15",
+	DUP16: "DUP16",
+
+	SWAP1:  "SWAP1",
+	SWAP2:  "SWAP2",
+	SWAP3:  "SWAP3",
+	SWAP4:  "SWAP4",
+	SWAP5:  "SWAP5",
+	SWAP6:  "SWAP6",
+	SWAP7:  "SWAP7",
+	SWAP8:  "SWAP8",
+	SWAP9:  "SWAP9",
+	SWAP10: "SWAP10",
+	SWAP11: "SWAP11",
+	SWAP12: "SWAP12",
+	SWAP13: "SWAP13",
+	SWAP14: "SWAP14",
+	SWAP15: "SWAP15",
+	SWAP16: "SWAP16",
+	LOG0:   "LOG0",
+	LOG1:   "LOG1",
+	LOG2:   "LOG2",
+	LOG3:   "LOG3",
+	LOG4:   "LOG4",
+
+	// 0xf0 range
+	CREATE:   "CREATE",
+	CALL:     "CALL",
+	RETURN:   "RETURN",
+	CALLCODE: "CALLCODE",
+
+	// 0x70 range - other
+	SUICIDE: "SUICIDE",
+}
+
+func (o OpCode) String() string {
+	str := opCodeToString[o]
+	if len(str) == 0 {
+		return fmt.Sprintf("Missing opcode 0x%x", int(o))
+	}
+
+	return str
+}
diff --git a/vm/virtual_machine.go b/vm/virtual_machine.go
new file mode 100644
index 000000000..3b6f98ab2
--- /dev/null
+++ b/vm/virtual_machine.go
@@ -0,0 +1,10 @@
+package vm
+
+import "math/big"
+
+type VirtualMachine interface {
+	Env() Environment
+	Run(me, caller ClosureRef, code []byte, value, gas, price *big.Int, data []byte) ([]byte, error)
+	Printf(string, ...interface{}) VirtualMachine
+	Endl() VirtualMachine
+}
diff --git a/vm/vm.go b/vm/vm.go
new file mode 100644
index 000000000..22172cb3a
--- /dev/null
+++ b/vm/vm.go
@@ -0,0 +1,36 @@
+package vm
+
+import "math/big"
+
+// BIG FAT WARNING. THIS VM IS NOT YET IS USE!
+// I want to get all VM tests pass first before updating this VM
+
+type Vm struct {
+	env   Environment
+	err   error
+	depth int
+}
+
+func New(env Environment, typ Type) VirtualMachine {
+	switch typ {
+	case DebugVmTy:
+		return NewDebugVm(env)
+	default:
+		return &Vm{env: env}
+	}
+}
+
+func (self *Vm) Run(me, caller ClosureRef, code []byte, value, gas, price *big.Int, data []byte) (ret []byte, err error) {
+	panic("not implemented")
+}
+
+func (self *Vm) Env() Environment {
+	return self.env
+}
+
+func (self *Vm) Depth() int {
+	return self.depth
+}
+
+func (self *Vm) Printf(format string, v ...interface{}) VirtualMachine { return self }
+func (self *Vm) Endl() VirtualMachine                                  { return self }
diff --git a/vm/vm_debug.go b/vm/vm_debug.go
new file mode 100644
index 000000000..aa3291e66
--- /dev/null
+++ b/vm/vm_debug.go
@@ -0,0 +1,983 @@
+package vm
+
+import (
+	"fmt"
+	"math"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+)
+
+type DebugVm struct {
+	env Environment
+
+	logTy  byte
+	logStr string
+
+	err error
+
+	// Debugging
+	Dbg Debugger
+
+	BreakPoints []int64
+	Stepping    bool
+	Fn          string
+
+	Recoverable bool
+}
+
+func NewDebugVm(env Environment) *DebugVm {
+	lt := LogTyPretty
+	if ethutil.Config.Diff {
+		lt = LogTyDiff
+	}
+
+	return &DebugVm{env: env, logTy: lt, Recoverable: true}
+}
+
+func (self *DebugVm) Run(me, caller ClosureRef, code []byte, value, gas, price *big.Int, callData []byte) (ret []byte, err error) {
+	self.env.SetDepth(self.env.Depth() + 1)
+
+	msg := self.env.State().Manifest().AddMessage(&state.Message{
+		To: me.Address(), From: caller.Address(),
+		Input:  callData,
+		Origin: self.env.Origin(),
+		Block:  self.env.BlockHash(), Timestamp: self.env.Time(), Coinbase: self.env.Coinbase(), Number: self.env.BlockNumber(),
+		Value: value,
+	})
+	closure := NewClosure(msg, caller, me, code, gas, price)
+
+	if p := Precompiled[string(me.Address())]; p != nil {
+		return self.RunPrecompiled(p, callData, closure)
+	}
+
+	if self.Recoverable {
+		// Recover from any require exception
+		defer func() {
+			if r := recover(); r != nil {
+				self.Endl()
+
+				closure.UseGas(closure.Gas)
+
+				ret = closure.Return(nil)
+
+				err = fmt.Errorf("%v", r)
+
+			}
+		}()
+	}
+
+	var (
+		op OpCode
+
+		destinations        = analyseJumpDests(closure.Code)
+		mem                 = NewMemory()
+		stack               = NewStack()
+		pc           uint64 = 0
+		step                = 0
+		prevStep            = 0
+		statedb             = self.env.State()
+		require             = func(m int) {
+			if stack.Len() < m {
+				panic(fmt.Sprintf("%04v (%v) stack err size = %d, required = %d", pc, op, stack.Len(), m))
+			}
+		}
+
+		jump = func(from uint64, to *big.Int) {
+			p := to.Uint64()
+
+			self.Printf(" ~> %v", to)
+			// Return to start
+			if p == 0 {
+				pc = 0
+			} else {
+				nop := OpCode(closure.GetOp(p))
+				if !(nop == JUMPDEST || destinations[from] != nil) {
+					panic(fmt.Sprintf("invalid jump destination (%v) %v", nop, p))
+				} else if nop == JUMP || nop == JUMPI {
+					panic(fmt.Sprintf("not allowed to JUMP(I) in to JUMP"))
+				}
+
+				pc = to.Uint64()
+
+			}
+
+			self.Endl()
+		}
+	)
+
+	vmlogger.Debugf("(%d) (%x) %x (code=%d) gas: %v (d) %x\n", self.env.Depth(), caller.Address()[:4], closure.Address(), len(code), closure.Gas, callData)
+
+	// Don't bother with the execution if there's no code.
+	if len(code) == 0 {
+		return closure.Return(nil), nil
+	}
+
+	for {
+		prevStep = step
+		// The base for all big integer arithmetic
+		base := new(big.Int)
+
+		step++
+		// Get the memory location of pc
+		op = closure.GetOp(pc)
+
+		gas := new(big.Int)
+		addStepGasUsage := func(amount *big.Int) {
+			if amount.Cmp(ethutil.Big0) >= 0 {
+				gas.Add(gas, amount)
+			}
+		}
+
+		addStepGasUsage(GasStep)
+
+		var newMemSize *big.Int = ethutil.Big0
+		var additionalGas *big.Int = new(big.Int)
+		// Stack Check, memory resize & gas phase
+		switch op {
+		// Stack checks only
+		case ISZERO, CALLDATALOAD, POP, JUMP, NOT: // 1
+			require(1)
+		case ADD, SUB, DIV, SDIV, MOD, SMOD, LT, GT, SLT, SGT, EQ, AND, OR, XOR, BYTE: // 2
+			require(2)
+		case ADDMOD, MULMOD: // 3
+			require(3)
+		case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16:
+			n := int(op - SWAP1 + 2)
+			require(n)
+		case DUP1, DUP2, DUP3, DUP4, DUP5, DUP6, DUP7, DUP8, DUP9, DUP10, DUP11, DUP12, DUP13, DUP14, DUP15, DUP16:
+			n := int(op - DUP1 + 1)
+			require(n)
+		case LOG0, LOG1, LOG2, LOG3, LOG4:
+			n := int(op - LOG0)
+			require(n + 2)
+
+			gas.Set(GasLog)
+			addStepGasUsage(new(big.Int).Mul(big.NewInt(int64(n)), GasLog))
+
+			mSize, mStart := stack.Peekn()
+			addStepGasUsage(mSize)
+
+			newMemSize = calcMemSize(mStart, mSize)
+		case EXP:
+			require(2)
+
+			gas.Set(big.NewInt(int64(len(stack.data[stack.Len()-2].Bytes()) + 1)))
+		// Gas only
+		case STOP:
+			gas.Set(ethutil.Big0)
+		case SUICIDE:
+			require(1)
+
+			gas.Set(ethutil.Big0)
+		case SLOAD:
+			require(1)
+
+			gas.Set(GasSLoad)
+		// Memory resize & Gas
+		case SSTORE:
+			require(2)
+
+			var mult *big.Int
+			y, x := stack.Peekn()
+			val := statedb.GetState(closure.Address(), x.Bytes())
+			if len(val) == 0 && len(y.Bytes()) > 0 {
+				// 0 => non 0
+				mult = ethutil.Big3
+			} else if len(val) > 0 && len(y.Bytes()) == 0 {
+				statedb.Refund(caller.Address(), GasSStoreRefund)
+
+				mult = ethutil.Big0
+			} else {
+				// non 0 => non 0 (or 0 => 0)
+				mult = ethutil.Big1
+			}
+			gas.Set(new(big.Int).Mul(mult, GasSStore))
+		case BALANCE:
+			require(1)
+			gas.Set(GasBalance)
+		case MSTORE:
+			require(2)
+			newMemSize = calcMemSize(stack.Peek(), u256(32))
+		case MLOAD:
+			require(1)
+
+			newMemSize = calcMemSize(stack.Peek(), u256(32))
+		case MSTORE8:
+			require(2)
+			newMemSize = calcMemSize(stack.Peek(), u256(1))
+		case RETURN:
+			require(2)
+
+			newMemSize = calcMemSize(stack.Peek(), stack.data[stack.Len()-2])
+		case SHA3:
+			require(2)
+			gas.Set(GasSha)
+			newMemSize = calcMemSize(stack.Peek(), stack.data[stack.Len()-2])
+			additionalGas.Set(stack.data[stack.Len()-2])
+		case CALLDATACOPY:
+			require(2)
+
+			newMemSize = calcMemSize(stack.Peek(), stack.data[stack.Len()-3])
+			additionalGas.Set(stack.data[stack.Len()-3])
+		case CODECOPY:
+			require(3)
+
+			newMemSize = calcMemSize(stack.Peek(), stack.data[stack.Len()-3])
+			additionalGas.Set(stack.data[stack.Len()-3])
+		case EXTCODECOPY:
+			require(4)
+
+			newMemSize = calcMemSize(stack.data[stack.Len()-2], stack.data[stack.Len()-4])
+			additionalGas.Set(stack.data[stack.Len()-4])
+		case CALL, CALLCODE:
+			require(7)
+			gas.Set(GasCall)
+			addStepGasUsage(stack.data[stack.Len()-1])
+
+			x := calcMemSize(stack.data[stack.Len()-6], stack.data[stack.Len()-7])
+			y := calcMemSize(stack.data[stack.Len()-4], stack.data[stack.Len()-5])
+
+			newMemSize = ethutil.BigMax(x, y)
+		case CREATE:
+			require(3)
+			gas.Set(GasCreate)
+
+			newMemSize = calcMemSize(stack.data[stack.Len()-2], stack.data[stack.Len()-3])
+		}
+
+		switch op {
+		case CALLDATACOPY, CODECOPY, EXTCODECOPY:
+			additionalGas.Add(additionalGas, u256(31))
+			additionalGas.Div(additionalGas, u256(32))
+			addStepGasUsage(additionalGas)
+		case SHA3:
+			additionalGas.Add(additionalGas, u256(31))
+			additionalGas.Div(additionalGas, u256(32))
+			additionalGas.Mul(additionalGas, GasSha3Byte)
+			addStepGasUsage(additionalGas)
+		}
+
+		if newMemSize.Cmp(ethutil.Big0) > 0 {
+			newMemSize.Add(newMemSize, u256(31))
+			newMemSize.Div(newMemSize, u256(32))
+			newMemSize.Mul(newMemSize, u256(32))
+
+			if newMemSize.Cmp(u256(int64(mem.Len()))) > 0 {
+				memGasUsage := new(big.Int).Sub(newMemSize, u256(int64(mem.Len())))
+				memGasUsage.Mul(GasMemory, memGasUsage)
+				memGasUsage.Div(memGasUsage, u256(32))
+
+				addStepGasUsage(memGasUsage)
+
+			}
+
+		}
+
+		self.Printf("(pc) %-3d -o- %-14s", pc, op.String())
+		self.Printf(" (m) %-4d (s) %-4d (g) %-3v (%v)", mem.Len(), stack.Len(), gas, closure.Gas)
+
+		if !closure.UseGas(gas) {
+			self.Endl()
+
+			tmp := new(big.Int).Set(closure.Gas)
+
+			closure.UseGas(closure.Gas)
+
+			return closure.Return(nil), OOG(gas, tmp)
+		}
+
+		mem.Resize(newMemSize.Uint64())
+
+		switch op {
+		// 0x20 range
+		case ADD:
+			x, y := stack.Popn()
+			self.Printf(" %v + %v", y, x)
+
+			base.Add(y, x)
+
+			U256(base)
+
+			self.Printf(" = %v", base)
+			// Pop result back on the stack
+			stack.Push(base)
+		case SUB:
+			x, y := stack.Popn()
+			self.Printf(" %v - %v", y, x)
+
+			base.Sub(y, x)
+
+			U256(base)
+
+			self.Printf(" = %v", base)
+			// Pop result back on the stack
+			stack.Push(base)
+		case MUL:
+			x, y := stack.Popn()
+			self.Printf(" %v * %v", y, x)
+
+			base.Mul(y, x)
+
+			U256(base)
+
+			self.Printf(" = %v", base)
+			// Pop result back on the stack
+			stack.Push(base)
+		case DIV:
+			x, y := stack.Pop(), stack.Pop()
+			self.Printf(" %v / %v", x, y)
+
+			if y.Cmp(ethutil.Big0) != 0 {
+				base.Div(x, y)
+			}
+
+			U256(base)
+
+			self.Printf(" = %v", base)
+			// Pop result back on the stack
+			stack.Push(base)
+		case SDIV:
+			x, y := S256(stack.Pop()), S256(stack.Pop())
+
+			self.Printf(" %v / %v", x, y)
+
+			if y.Cmp(ethutil.Big0) == 0 {
+				base.Set(ethutil.Big0)
+			} else {
+				n := new(big.Int)
+				if new(big.Int).Mul(x, y).Cmp(ethutil.Big0) < 0 {
+					n.SetInt64(-1)
+				} else {
+					n.SetInt64(1)
+				}
+
+				base.Div(x.Abs(x), y.Abs(y)).Mul(base, n)
+
+				U256(base)
+			}
+
+			self.Printf(" = %v", base)
+			stack.Push(base)
+		case MOD:
+			x, y := stack.Pop(), stack.Pop()
+
+			self.Printf(" %v %% %v", x, y)
+
+			if y.Cmp(ethutil.Big0) == 0 {
+				base.Set(ethutil.Big0)
+			} else {
+				base.Mod(x, y)
+			}
+
+			U256(base)
+
+			self.Printf(" = %v", base)
+			stack.Push(base)
+		case SMOD:
+			x, y := S256(stack.Pop()), S256(stack.Pop())
+
+			self.Printf(" %v %% %v", x, y)
+
+			if y.Cmp(ethutil.Big0) == 0 {
+				base.Set(ethutil.Big0)
+			} else {
+				n := new(big.Int)
+				if x.Cmp(ethutil.Big0) < 0 {
+					n.SetInt64(-1)
+				} else {
+					n.SetInt64(1)
+				}
+
+				base.Mod(x.Abs(x), y.Abs(y)).Mul(base, n)
+
+				U256(base)
+			}
+
+			self.Printf(" = %v", base)
+			stack.Push(base)
+
+		case EXP:
+			x, y := stack.Popn()
+
+			self.Printf(" %v ** %v", y, x)
+
+			base.Exp(y, x, Pow256)
+
+			U256(base)
+
+			self.Printf(" = %v", base)
+
+			stack.Push(base)
+		case SIGNEXTEND:
+			back := stack.Pop().Uint64()
+			if back < 31 {
+				bit := uint(back*8 + 7)
+				num := stack.Pop()
+				mask := new(big.Int).Lsh(ethutil.Big1, bit)
+				mask.Sub(mask, ethutil.Big1)
+				if ethutil.BitTest(num, int(bit)) {
+					num.Or(num, mask.Not(mask))
+				} else {
+					num.And(num, mask)
+				}
+
+				num = U256(num)
+
+				self.Printf(" = %v", num)
+
+				stack.Push(num)
+			}
+		case NOT:
+			base.Sub(Pow256, stack.Pop()).Sub(base, ethutil.Big1)
+
+			// Not needed
+			//base = U256(base)
+
+			stack.Push(base)
+		case LT:
+			x, y := stack.Popn()
+			self.Printf(" %v < %v", y, x)
+			// x < y
+			if y.Cmp(x) < 0 {
+				stack.Push(ethutil.BigTrue)
+			} else {
+				stack.Push(ethutil.BigFalse)
+			}
+		case GT:
+			x, y := stack.Popn()
+			self.Printf(" %v > %v", y, x)
+
+			// x > y
+			if y.Cmp(x) > 0 {
+				stack.Push(ethutil.BigTrue)
+			} else {
+				stack.Push(ethutil.BigFalse)
+			}
+
+		case SLT:
+			y, x := S256(stack.Pop()), S256(stack.Pop())
+			self.Printf(" %v < %v", y, x)
+			// x < y
+			if y.Cmp(S256(x)) < 0 {
+				stack.Push(ethutil.BigTrue)
+			} else {
+				stack.Push(ethutil.BigFalse)
+			}
+		case SGT:
+			y, x := S256(stack.Pop()), S256(stack.Pop())
+			self.Printf(" %v > %v", y, x)
+
+			// x > y
+			if y.Cmp(x) > 0 {
+				stack.Push(ethutil.BigTrue)
+			} else {
+				stack.Push(ethutil.BigFalse)
+			}
+
+		case EQ:
+			x, y := stack.Popn()
+			self.Printf(" %v == %v", y, x)
+
+			// x == y
+			if x.Cmp(y) == 0 {
+				stack.Push(ethutil.BigTrue)
+			} else {
+				stack.Push(ethutil.BigFalse)
+			}
+		case ISZERO:
+			x := stack.Pop()
+			if x.Cmp(ethutil.BigFalse) > 0 {
+				stack.Push(ethutil.BigFalse)
+			} else {
+				stack.Push(ethutil.BigTrue)
+			}
+
+			// 0x10 range
+		case AND:
+			x, y := stack.Popn()
+			self.Printf(" %v & %v", y, x)
+
+			stack.Push(base.And(y, x))
+		case OR:
+			x, y := stack.Popn()
+			self.Printf(" %v | %v", y, x)
+
+			stack.Push(base.Or(y, x))
+		case XOR:
+			x, y := stack.Popn()
+			self.Printf(" %v ^ %v", y, x)
+
+			stack.Push(base.Xor(y, x))
+		case BYTE:
+			val, th := stack.Popn()
+
+			if th.Cmp(big.NewInt(32)) < 0 {
+				byt := big.NewInt(int64(ethutil.LeftPadBytes(val.Bytes(), 32)[th.Int64()]))
+
+				base.Set(byt)
+			} else {
+				base.Set(ethutil.BigFalse)
+			}
+
+			self.Printf(" => 0x%x", base.Bytes())
+
+			stack.Push(base)
+		case ADDMOD:
+
+			x := stack.Pop()
+			y := stack.Pop()
+			z := stack.Pop()
+
+			base.Add(x, y)
+			base.Mod(base, z)
+
+			U256(base)
+
+			self.Printf(" = %v", base)
+
+			stack.Push(base)
+		case MULMOD:
+
+			x := stack.Pop()
+			y := stack.Pop()
+			z := stack.Pop()
+
+			base.Mul(x, y)
+			base.Mod(base, z)
+
+			U256(base)
+
+			self.Printf(" = %v", base)
+
+			stack.Push(base)
+
+			// 0x20 range
+		case SHA3:
+			size, offset := stack.Popn()
+			data := crypto.Sha3(mem.Get(offset.Int64(), size.Int64()))
+
+			stack.Push(ethutil.BigD(data))
+
+			self.Printf(" => %x", data)
+			// 0x30 range
+		case ADDRESS:
+			stack.Push(ethutil.BigD(closure.Address()))
+
+			self.Printf(" => %x", closure.Address())
+		case BALANCE:
+
+			addr := stack.Pop().Bytes()
+			balance := statedb.GetBalance(addr)
+
+			stack.Push(balance)
+
+			self.Printf(" => %v (%x)", balance, addr)
+		case ORIGIN:
+			origin := self.env.Origin()
+
+			stack.Push(ethutil.BigD(origin))
+
+			self.Printf(" => %x", origin)
+		case CALLER:
+			caller := closure.caller.Address()
+			stack.Push(ethutil.BigD(caller))
+
+			self.Printf(" => %x", caller)
+		case CALLVALUE:
+			stack.Push(value)
+
+			self.Printf(" => %v", value)
+		case CALLDATALOAD:
+			var (
+				offset  = stack.Pop()
+				data    = make([]byte, 32)
+				lenData = big.NewInt(int64(len(callData)))
+			)
+
+			if lenData.Cmp(offset) >= 0 {
+				length := new(big.Int).Add(offset, ethutil.Big32)
+				length = ethutil.BigMin(length, lenData)
+
+				copy(data, callData[offset.Int64():length.Int64()])
+			}
+
+			self.Printf(" => 0x%x", data)
+
+			stack.Push(ethutil.BigD(data))
+		case CALLDATASIZE:
+			l := int64(len(callData))
+			stack.Push(big.NewInt(l))
+
+			self.Printf(" => %d", l)
+		case CALLDATACOPY:
+			var (
+				size = uint64(len(callData))
+				mOff = stack.Pop().Uint64()
+				cOff = stack.Pop().Uint64()
+				l    = stack.Pop().Uint64()
+			)
+
+			if cOff > size {
+				cOff = 0
+				l = 0
+			} else if cOff+l > size {
+				l = 0
+			}
+
+			code := callData[cOff : cOff+l]
+
+			mem.Set(mOff, l, code)
+
+			self.Printf(" => [%v, %v, %v] %x", mOff, cOff, l, callData[cOff:cOff+l])
+		case CODESIZE, EXTCODESIZE:
+			var code []byte
+			if op == EXTCODESIZE {
+				addr := stack.Pop().Bytes()
+
+				code = statedb.GetCode(addr)
+			} else {
+				code = closure.Code
+			}
+
+			l := big.NewInt(int64(len(code)))
+			stack.Push(l)
+
+			self.Printf(" => %d", l)
+		case CODECOPY, EXTCODECOPY:
+			var code []byte
+			if op == EXTCODECOPY {
+				code = statedb.GetCode(stack.Pop().Bytes())
+			} else {
+				code = closure.Code
+			}
+
+			var (
+				size = uint64(len(code))
+				mOff = stack.Pop().Uint64()
+				cOff = stack.Pop().Uint64()
+				l    = stack.Pop().Uint64()
+			)
+
+			if cOff > size {
+				cOff = 0
+				l = 0
+			} else if cOff+l > size {
+				l = uint64(math.Min(float64(cOff+l), float64(size)))
+			}
+			codeCopy := code[cOff : cOff+l]
+
+			mem.Set(mOff, l, codeCopy)
+
+			self.Printf(" => [%v, %v, %v] %x", mOff, cOff, l, codeCopy)
+		case GASPRICE:
+			stack.Push(closure.Price)
+
+			self.Printf(" => %v", closure.Price)
+
+			// 0x40 range
+		case PREVHASH:
+			prevHash := self.env.PrevHash()
+
+			stack.Push(ethutil.BigD(prevHash))
+
+			self.Printf(" => 0x%x", prevHash)
+		case COINBASE:
+			coinbase := self.env.Coinbase()
+
+			stack.Push(ethutil.BigD(coinbase))
+
+			self.Printf(" => 0x%x", coinbase)
+		case TIMESTAMP:
+			time := self.env.Time()
+
+			stack.Push(big.NewInt(time))
+
+			self.Printf(" => 0x%x", time)
+		case NUMBER:
+			number := self.env.BlockNumber()
+
+			stack.Push(number)
+
+			self.Printf(" => 0x%x", number.Bytes())
+		case DIFFICULTY:
+			difficulty := self.env.Difficulty()
+
+			stack.Push(difficulty)
+
+			self.Printf(" => 0x%x", difficulty.Bytes())
+		case GASLIMIT:
+			stack.Push(self.env.GasLimit())
+
+			// 0x50 range
+		case PUSH1, PUSH2, PUSH3, PUSH4, PUSH5, PUSH6, PUSH7, PUSH8, PUSH9, PUSH10, PUSH11, PUSH12, PUSH13, PUSH14, PUSH15, PUSH16, PUSH17, PUSH18, PUSH19, PUSH20, PUSH21, PUSH22, PUSH23, PUSH24, PUSH25, PUSH26, PUSH27, PUSH28, PUSH29, PUSH30, PUSH31, PUSH32:
+			//a := big.NewInt(int64(op) - int64(PUSH1) + 1)
+			a := uint64(op - PUSH1 + 1)
+			//pc.Add(pc, ethutil.Big1)
+			val := ethutil.BigD(closure.GetRangeValue(pc+1, a))
+			// Push value to stack
+			stack.Push(val)
+			pc += a
+			//pc.Add(pc, a.Sub(a, big.NewInt(1)))
+
+			step += int(op) - int(PUSH1) + 1
+
+			self.Printf(" => 0x%x", val.Bytes())
+		case POP:
+			stack.Pop()
+		case DUP1, DUP2, DUP3, DUP4, DUP5, DUP6, DUP7, DUP8, DUP9, DUP10, DUP11, DUP12, DUP13, DUP14, DUP15, DUP16:
+			n := int(op - DUP1 + 1)
+			stack.Dupn(n)
+
+			self.Printf(" => [%d] 0x%x", n, stack.Peek().Bytes())
+		case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16:
+			n := int(op - SWAP1 + 2)
+			x, y := stack.Swapn(n)
+
+			self.Printf(" => [%d] %x [0] %x", n, x.Bytes(), y.Bytes())
+		case LOG0, LOG1, LOG2, LOG3, LOG4:
+			n := int(op - LOG0)
+			topics := make([][]byte, n)
+			mSize, mStart := stack.Popn()
+			for i := 0; i < n; i++ {
+				topics[i] = ethutil.LeftPadBytes(stack.Pop().Bytes(), 32)
+			}
+
+			data := mem.Geti(mStart.Int64(), mSize.Int64())
+			log := &Log{closure.Address(), topics, data}
+			self.env.AddLog(log)
+
+			self.Printf(" => %v", log)
+		case MLOAD:
+			offset := stack.Pop()
+			val := ethutil.BigD(mem.Get(offset.Int64(), 32))
+			stack.Push(val)
+
+			self.Printf(" => 0x%x", val.Bytes())
+		case MSTORE: // Store the value at stack top-1 in to memory at location stack top
+			// Pop value of the stack
+			val, mStart := stack.Popn()
+			mem.Set(mStart.Uint64(), 32, ethutil.BigToBytes(val, 256))
+
+			self.Printf(" => 0x%x", val)
+		case MSTORE8:
+			off := stack.Pop()
+			val := stack.Pop()
+
+			mem.store[off.Int64()] = byte(val.Int64() & 0xff)
+
+			self.Printf(" => [%v] 0x%x", off, val)
+		case SLOAD:
+			loc := stack.Pop()
+			val := ethutil.BigD(statedb.GetState(closure.Address(), loc.Bytes()))
+			stack.Push(val)
+
+			self.Printf(" {0x%x : 0x%x}", loc.Bytes(), val.Bytes())
+		case SSTORE:
+			val, loc := stack.Popn()
+			statedb.SetState(closure.Address(), loc.Bytes(), val)
+
+			closure.message.AddStorageChange(loc.Bytes())
+
+			self.Printf(" {0x%x : 0x%x}", loc.Bytes(), val.Bytes())
+		case JUMP:
+			jump(pc, stack.Pop())
+
+			continue
+		case JUMPI:
+			cond, pos := stack.Popn()
+
+			if cond.Cmp(ethutil.BigTrue) >= 0 {
+				jump(pc, pos)
+
+				continue
+			}
+
+		case JUMPDEST:
+		case PC:
+			stack.Push(big.NewInt(int64(pc)))
+		case MSIZE:
+			stack.Push(big.NewInt(int64(mem.Len())))
+		case GAS:
+			stack.Push(closure.Gas)
+			// 0x60 range
+		case CREATE:
+
+			var (
+				err          error
+				value        = stack.Pop()
+				size, offset = stack.Popn()
+				input        = mem.Get(offset.Int64(), size.Int64())
+				gas          = new(big.Int).Set(closure.Gas)
+
+				// Snapshot the current stack so we are able to
+				// revert back to it later.
+				//snapshot = self.env.State().Copy()
+			)
+
+			// Generate a new address
+			n := statedb.GetNonce(closure.Address())
+			addr := crypto.CreateAddress(closure.Address(), n)
+			statedb.SetNonce(closure.Address(), n+1)
+
+			self.Printf(" (*) %x", addr).Endl()
+
+			closure.UseGas(closure.Gas)
+
+			ret, err, ref := self.env.Create(closure, addr, input, gas, price, value)
+			if err != nil {
+				stack.Push(ethutil.BigFalse)
+
+				self.Printf("CREATE err %v", err)
+			} else {
+				// gas < len(ret) * CreateDataGas == NO_CODE
+				dataGas := big.NewInt(int64(len(ret)))
+				dataGas.Mul(dataGas, GasCreateByte)
+				if closure.UseGas(dataGas) {
+					ref.SetCode(ret)
+					msg.Output = ret
+				}
+
+				stack.Push(ethutil.BigD(addr))
+			}
+
+			self.Endl()
+
+			// Debug hook
+			if self.Dbg != nil {
+				self.Dbg.SetCode(closure.Code)
+			}
+		case CALL, CALLCODE:
+			self.Endl()
+
+			gas := stack.Pop()
+			// Pop gas and value of the stack.
+			value, addr := stack.Popn()
+			// Pop input size and offset
+			inSize, inOffset := stack.Popn()
+			// Pop return size and offset
+			retSize, retOffset := stack.Popn()
+
+			// Get the arguments from the memory
+			args := mem.Get(inOffset.Int64(), inSize.Int64())
+
+			var (
+				ret []byte
+				err error
+			)
+			if op == CALLCODE {
+				ret, err = self.env.CallCode(closure, addr.Bytes(), args, gas, price, value)
+			} else {
+				ret, err = self.env.Call(closure, addr.Bytes(), args, gas, price, value)
+			}
+
+			if err != nil {
+				stack.Push(ethutil.BigFalse)
+
+				vmlogger.Debugln(err)
+			} else {
+				stack.Push(ethutil.BigTrue)
+				msg.Output = ret
+
+				mem.Set(retOffset.Uint64(), retSize.Uint64(), ret)
+			}
+			self.Printf("resume %x (%v)", closure.Address(), closure.Gas)
+
+			// Debug hook
+			if self.Dbg != nil {
+				self.Dbg.SetCode(closure.Code)
+			}
+
+		case RETURN:
+			size, offset := stack.Popn()
+			ret := mem.Get(offset.Int64(), size.Int64())
+
+			self.Printf(" => [%v, %v] (%d) 0x%x", offset, size, len(ret), ret).Endl()
+
+			return closure.Return(ret), nil
+		case SUICIDE:
+			receiver := statedb.GetOrNewStateObject(stack.Pop().Bytes())
+			balance := statedb.GetBalance(closure.Address())
+
+			self.Printf(" => (%x) %v", receiver.Address()[:4], balance)
+
+			receiver.AddAmount(balance)
+			statedb.Delete(closure.Address())
+
+			fallthrough
+		case STOP: // Stop the closure
+			self.Endl()
+
+			return closure.Return(nil), nil
+		default:
+			vmlogger.Debugf("(pc) %-3v Invalid opcode %x\n", pc, op)
+
+			closure.ReturnGas(big.NewInt(1), nil)
+
+			return closure.Return(nil), fmt.Errorf("Invalid opcode %x", op)
+		}
+
+		pc++
+
+		self.Endl()
+
+		if self.Dbg != nil {
+			for _, instrNo := range self.Dbg.BreakPoints() {
+				if pc == uint64(instrNo) {
+					self.Stepping = true
+
+					if !self.Dbg.BreakHook(prevStep, op, mem, stack, statedb.GetStateObject(closure.Address())) {
+						return nil, nil
+					}
+				} else if self.Stepping {
+					if !self.Dbg.StepHook(prevStep, op, mem, stack, statedb.GetStateObject(closure.Address())) {
+						return nil, nil
+					}
+				}
+			}
+		}
+
+	}
+}
+
+func (self *DebugVm) RunPrecompiled(p *PrecompiledAccount, callData []byte, closure *Closure) (ret []byte, err error) {
+	gas := p.Gas(len(callData))
+	if closure.UseGas(gas) {
+		ret = p.Call(callData)
+		self.Printf("NATIVE_FUNC => %x", ret)
+		self.Endl()
+
+		return closure.Return(ret), nil
+	} else {
+		self.Endl()
+
+		tmp := new(big.Int).Set(closure.Gas)
+
+		closure.UseGas(closure.Gas)
+
+		return closure.Return(nil), OOG(gas, tmp)
+	}
+}
+
+func (self *DebugVm) Printf(format string, v ...interface{}) VirtualMachine {
+	if self.logTy == LogTyPretty {
+		self.logStr += fmt.Sprintf(format, v...)
+	}
+
+	return self
+}
+
+func (self *DebugVm) Endl() VirtualMachine {
+	if self.logTy == LogTyPretty {
+		vmlogger.Debugln(self.logStr)
+		self.logStr = ""
+	}
+
+	return self
+}
+
+func (self *DebugVm) Env() Environment {
+	return self.env
+}
diff --git a/vm/vm_test.go b/vm/vm_test.go
new file mode 100644
index 000000000..9bd147a72
--- /dev/null
+++ b/vm/vm_test.go
@@ -0,0 +1,3 @@
+package vm
+
+// Tests have been removed in favour of general tests. If anything implementation specific needs testing, put it here
diff --git a/websocket/client.go b/websocket/client.go
new file mode 100644
index 000000000..d961816e8
--- /dev/null
+++ b/websocket/client.go
@@ -0,0 +1,122 @@
+package websocket
+
+import (
+	"fmt"
+	"io"
+
+	ws "code.google.com/p/go.net/websocket"
+)
+
+const channelBufSize = 100
+
+var maxId int = 0
+
+type MsgFunc func(c *Client, msg *Message)
+
+// Chat client.
+type Client struct {
+	id     int
+	ws     *ws.Conn
+	server *Server
+	ch     chan *Message
+	doneCh chan bool
+
+	onMessage MsgFunc
+}
+
+// Create new chat client.
+func NewClient(ws *ws.Conn, server *Server) *Client {
+
+	if ws == nil {
+		panic("ws cannot be nil")
+	}
+
+	if server == nil {
+		panic("server cannot be nil")
+	}
+
+	maxId++
+	ch := make(chan *Message, channelBufSize)
+	doneCh := make(chan bool)
+
+	return &Client{maxId, ws, server, ch, doneCh, nil}
+}
+
+func (c *Client) Id() int {
+	return c.id
+}
+
+func (c *Client) Conn() *ws.Conn {
+	return c.ws
+}
+
+func (c *Client) Write(data interface{}, seed int) {
+	msg := &Message{Seed: seed, Data: data}
+	select {
+	case c.ch <- msg:
+	default:
+		c.server.Del(c)
+		err := fmt.Errorf("client %d is disconnected.", c.id)
+		c.server.Err(err)
+	}
+}
+
+func (c *Client) Done() {
+	c.doneCh <- true
+}
+
+// Listen Write and Read request via chanel
+func (c *Client) Listen() {
+	go c.listenWrite()
+	c.listenRead()
+}
+
+// Listen write request via chanel
+func (c *Client) listenWrite() {
+	wslogger.Debugln("Listening write to client")
+	for {
+		select {
+
+		// send message to the client
+		case msg := <-c.ch:
+			wslogger.Debugln("Send:", msg)
+			ws.JSON.Send(c.ws, msg)
+
+		// receive done request
+		case <-c.doneCh:
+			c.server.Del(c)
+			c.doneCh <- true // for listenRead method
+			return
+		}
+	}
+}
+
+// Listen read request via chanel
+func (c *Client) listenRead() {
+	wslogger.Debugln("Listening read from client")
+	for {
+		select {
+
+		// receive done request
+		case <-c.doneCh:
+			c.server.Del(c)
+			c.doneCh <- true // for listenWrite method
+			return
+
+		// read data from ws connection
+		default:
+			var msg Message
+			err := ws.JSON.Receive(c.ws, &msg)
+			if err == io.EOF {
+				c.doneCh <- true
+			} else if err != nil {
+				c.server.Err(err)
+			} else {
+				wslogger.Debugln(&msg)
+				if c.onMessage != nil {
+					c.onMessage(c, &msg)
+				}
+			}
+		}
+	}
+}
diff --git a/websocket/message.go b/websocket/message.go
new file mode 100644
index 000000000..67289c4c4
--- /dev/null
+++ b/websocket/message.go
@@ -0,0 +1,14 @@
+package websocket
+
+import "github.com/ethereum/go-ethereum/ethutil"
+
+type Message struct {
+	Call string        `json:"call"`
+	Args []interface{} `json:"args"`
+	Seed int           `json:"seed"`
+	Data interface{}   `json:"data"`
+}
+
+func (self *Message) Arguments() *ethutil.Value {
+	return ethutil.NewValue(self.Args)
+}
diff --git a/websocket/server.go b/websocket/server.go
new file mode 100644
index 000000000..5fd923a0c
--- /dev/null
+++ b/websocket/server.go
@@ -0,0 +1,127 @@
+package websocket
+
+import (
+	"net/http"
+
+	"github.com/ethereum/go-ethereum/logger"
+
+	ws "code.google.com/p/go.net/websocket"
+)
+
+var wslogger = logger.NewLogger("WS")
+
+// Chat server.
+type Server struct {
+	httpServ  string
+	pattern   string
+	messages  []*Message
+	clients   map[int]*Client
+	addCh     chan *Client
+	delCh     chan *Client
+	sendAllCh chan string
+	doneCh    chan bool
+	errCh     chan error
+	msgFunc   MsgFunc
+}
+
+// Create new chat server.
+func NewServer(pattern, httpServ string) *Server {
+	clients := make(map[int]*Client)
+	addCh := make(chan *Client)
+	delCh := make(chan *Client)
+	sendAllCh := make(chan string)
+	doneCh := make(chan bool)
+	errCh := make(chan error)
+
+	return &Server{
+		httpServ,
+		pattern,
+		nil,
+		clients,
+		addCh,
+		delCh,
+		sendAllCh,
+		doneCh,
+		errCh,
+		nil,
+	}
+}
+
+func (s *Server) Add(c *Client) {
+	s.addCh <- c
+}
+
+func (s *Server) Del(c *Client) {
+	s.delCh <- c
+}
+
+func (s *Server) SendAll(msg string) {
+	s.sendAllCh <- msg
+}
+
+func (s *Server) Done() {
+	s.doneCh <- true
+}
+
+func (s *Server) Err(err error) {
+	s.errCh <- err
+}
+
+func (s *Server) servHTTP() {
+	wslogger.Debugln("Serving http", s.httpServ)
+	err := http.ListenAndServe(s.httpServ, nil)
+
+	wslogger.Warnln(err)
+}
+
+func (s *Server) MessageFunc(f MsgFunc) {
+	s.msgFunc = f
+}
+
+// Listen and serve.
+// It serves client connection and broadcast request.
+func (s *Server) Listen() {
+	wslogger.Debugln("Listening server...")
+
+	// ws handler
+	onConnected := func(ws *ws.Conn) {
+		defer func() {
+			err := ws.Close()
+			if err != nil {
+				s.errCh <- err
+			}
+		}()
+
+		client := NewClient(ws, s)
+		client.onMessage = s.msgFunc
+		s.Add(client)
+		client.Listen()
+	}
+	// Disable Origin check. Request don't need to come necessarily from origin.
+	http.HandleFunc(s.pattern, func(w http.ResponseWriter, req *http.Request) {
+		s := ws.Server{Handler: ws.Handler(onConnected)}
+		s.ServeHTTP(w, req)
+	})
+	wslogger.Debugln("Created handler")
+
+	go s.servHTTP()
+
+	for {
+		select {
+
+		// Add new a client
+		case c := <-s.addCh:
+			s.clients[c.id] = c
+
+		// del a client
+		case c := <-s.delCh:
+			delete(s.clients, c.id)
+
+		case err := <-s.errCh:
+			wslogger.Debugln("Error:", err.Error())
+
+		case <-s.doneCh:
+			return
+		}
+	}
+}
diff --git a/whisper/envelope.go b/whisper/envelope.go
new file mode 100644
index 000000000..683e88128
--- /dev/null
+++ b/whisper/envelope.go
@@ -0,0 +1,121 @@
+package whisper
+
+import (
+	"bytes"
+	"crypto/ecdsa"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"time"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/rlp"
+)
+
+const (
+	DefaultPow = 50 * time.Millisecond
+)
+
+type Envelope struct {
+	Expiry uint32 // Whisper protocol specifies int32, really should be int64
+	Ttl    uint32 // ^^^^^^
+	Topics [][]byte
+	Data   []byte
+	Nonce  uint32
+
+	hash Hash
+}
+
+func NewEnvelopeFromReader(reader io.Reader) (*Envelope, error) {
+	var envelope Envelope
+
+	buf := new(bytes.Buffer)
+	buf.ReadFrom(reader)
+
+	h := H(crypto.Sha3(buf.Bytes()))
+	if err := rlp.Decode(buf, &envelope); err != nil {
+		return nil, err
+	}
+
+	envelope.hash = h
+
+	return &envelope, nil
+}
+
+func (self *Envelope) Hash() Hash {
+	if self.hash == EmptyHash {
+		self.hash = H(crypto.Sha3(ethutil.Encode(self)))
+	}
+
+	return self.hash
+}
+
+func NewEnvelope(ttl time.Duration, topics [][]byte, data *Message) *Envelope {
+	exp := time.Now().Add(ttl)
+
+	return &Envelope{uint32(exp.Unix()), uint32(ttl.Seconds()), topics, data.Bytes(), 0, Hash{}}
+}
+
+func (self *Envelope) Seal(pow time.Duration) {
+	self.proveWork(pow)
+}
+
+func (self *Envelope) Open(prv *ecdsa.PrivateKey) (msg *Message, err error) {
+	data := self.Data
+	var message Message
+	dataStart := 1
+	if data[0] > 0 {
+		if len(data) < 66 {
+			return nil, fmt.Errorf("unable to open envelope. First bit set but len(data) < 66")
+		}
+		dataStart = 66
+		message.Flags = data[0]
+		message.Signature = data[1:66]
+	}
+	message.Payload = data[dataStart:]
+	if prv != nil {
+		message.Payload, err = crypto.Decrypt(prv, message.Payload)
+		if err != nil {
+			return nil, fmt.Errorf("unable to open envelope. Decrypt failed: %v", err)
+		}
+	}
+
+	return &message, nil
+}
+
+func (self *Envelope) proveWork(dura time.Duration) {
+	var bestBit int
+	d := make([]byte, 64)
+	copy(d[:32], ethutil.Encode(self.withoutNonce()))
+
+	then := time.Now().Add(dura).UnixNano()
+	for n := uint32(0); time.Now().UnixNano() < then; {
+		for i := 0; i < 1024; i++ {
+			binary.BigEndian.PutUint32(d[60:], n)
+
+			fbs := ethutil.FirstBitSet(ethutil.BigD(crypto.Sha3(d)))
+			if fbs > bestBit {
+				bestBit = fbs
+				self.Nonce = n
+			}
+
+			n++
+		}
+	}
+}
+
+func (self *Envelope) valid() bool {
+	d := make([]byte, 64)
+	copy(d[:32], ethutil.Encode(self.withoutNonce()))
+	binary.BigEndian.PutUint32(d[60:], self.Nonce)
+	return ethutil.FirstBitSet(ethutil.BigD(crypto.Sha3(d))) > 0
+}
+
+func (self *Envelope) withoutNonce() interface{} {
+	return []interface{}{self.Expiry, self.Ttl, ethutil.ByteSliceToInterface(self.Topics), self.Data}
+}
+
+func (self *Envelope) RlpData() interface{} {
+	return []interface{}{self.Expiry, self.Ttl, ethutil.ByteSliceToInterface(self.Topics), self.Data, self.Nonce}
+}
diff --git a/whisper/filter.go b/whisper/filter.go
new file mode 100644
index 000000000..4315aa556
--- /dev/null
+++ b/whisper/filter.go
@@ -0,0 +1,10 @@
+package whisper
+
+import "crypto/ecdsa"
+
+type Filter struct {
+	To     *ecdsa.PrivateKey
+	From   *ecdsa.PublicKey
+	Topics [][]byte
+	Fn     func(*Message)
+}
diff --git a/whisper/main.go b/whisper/main.go
new file mode 100644
index 000000000..2ee2f3ff1
--- /dev/null
+++ b/whisper/main.go
@@ -0,0 +1,47 @@
+// +build none
+
+package main
+
+import (
+	"fmt"
+	"log"
+	"net"
+	"os"
+
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/whisper"
+	"github.com/obscuren/secp256k1-go"
+)
+
+func main() {
+	logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.InfoLevel))
+
+	pub, _ := secp256k1.GenerateKeyPair()
+
+	whisper := whisper.New(&event.TypeMux{})
+
+	srv := p2p.Server{
+		MaxPeers:   10,
+		Identity:   p2p.NewSimpleClientIdentity("whisper-go", "1.0", "", string(pub)),
+		ListenAddr: ":30303",
+		NAT:        p2p.UPNP(),
+
+		Protocols: []p2p.Protocol{whisper.Protocol()},
+	}
+	if err := srv.Start(); err != nil {
+		fmt.Println("could not start server:", err)
+		os.Exit(1)
+	}
+
+	// add seed peers
+	seed, err := net.ResolveTCPAddr("tcp", "poc-7.ethdev.com:30300")
+	if err != nil {
+		fmt.Println("couldn't resolve:", err)
+		os.Exit(1)
+	}
+	srv.SuggestPeer(seed.IP, seed.Port, nil)
+
+	select {}
+}
diff --git a/whisper/message.go b/whisper/message.go
new file mode 100644
index 000000000..db0110b4a
--- /dev/null
+++ b/whisper/message.go
@@ -0,0 +1,74 @@
+package whisper
+
+import (
+	"crypto/ecdsa"
+	"time"
+
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+type Message struct {
+	Flags     byte
+	Signature []byte
+	Payload   []byte
+}
+
+func NewMessage(payload []byte) *Message {
+	return &Message{Flags: 0, Payload: payload}
+}
+
+func (self *Message) hash() []byte {
+	return crypto.Sha3(append([]byte{self.Flags}, self.Payload...))
+}
+
+func (self *Message) sign(key *ecdsa.PrivateKey) (err error) {
+	self.Flags = 1
+	self.Signature, err = crypto.Sign(self.hash(), key)
+	return
+}
+
+func (self *Message) Recover() *ecdsa.PublicKey {
+	defer func() { recover() }() // in case of invalid sig
+	return crypto.SigToPub(self.hash(), self.Signature)
+}
+
+func (self *Message) Encrypt(to *ecdsa.PublicKey) (err error) {
+	self.Payload, err = crypto.Encrypt(to, self.Payload)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (self *Message) Bytes() []byte {
+	return append([]byte{self.Flags}, append(self.Signature, self.Payload...)...)
+}
+
+type Opts struct {
+	From   *ecdsa.PrivateKey
+	To     *ecdsa.PublicKey
+	Ttl    time.Duration
+	Topics [][]byte
+}
+
+func (self *Message) Seal(pow time.Duration, opts Opts) (*Envelope, error) {
+	if opts.From != nil {
+		err := self.sign(opts.From)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if opts.To != nil {
+		err := self.Encrypt(opts.To)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	envelope := NewEnvelope(DefaultTtl, opts.Topics, self)
+	envelope.Seal(pow)
+
+	return envelope, nil
+}
diff --git a/whisper/messages_test.go b/whisper/messages_test.go
new file mode 100644
index 000000000..cba103011
--- /dev/null
+++ b/whisper/messages_test.go
@@ -0,0 +1,51 @@
+package whisper
+
+import (
+	"bytes"
+	"crypto/elliptic"
+	"fmt"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+func TestSign(t *testing.T) {
+	prv, _ := crypto.GenerateKey()
+	msg := NewMessage([]byte("hello world"))
+	msg.sign(prv)
+
+	pubKey := msg.Recover()
+	p1 := elliptic.Marshal(crypto.S256(), prv.PublicKey.X, prv.PublicKey.Y)
+	p2 := elliptic.Marshal(crypto.S256(), pubKey.X, pubKey.Y)
+
+	if !bytes.Equal(p1, p2) {
+		t.Error("recovered pub key did not match")
+	}
+}
+
+func TestMessageEncryptDecrypt(t *testing.T) {
+	prv1, _ := crypto.GenerateKey()
+	prv2, _ := crypto.GenerateKey()
+
+	data := []byte("hello world")
+	msg := NewMessage(data)
+	envelope, err := msg.Seal(DefaultPow, Opts{
+		From: prv1,
+		To:   &prv2.PublicKey,
+	})
+	if err != nil {
+		fmt.Println(err)
+		t.FailNow()
+	}
+
+	msg1, err := envelope.Open(prv2)
+	if err != nil {
+		fmt.Println(err)
+		t.FailNow()
+	}
+
+	if !bytes.Equal(msg1.Payload, data) {
+		fmt.Println("encryption error. data did not match")
+		t.FailNow()
+	}
+}
diff --git a/whisper/peer.go b/whisper/peer.go
new file mode 100644
index 000000000..d42b374b5
--- /dev/null
+++ b/whisper/peer.go
@@ -0,0 +1,128 @@
+package whisper
+
+import (
+	"fmt"
+	"io/ioutil"
+	"time"
+
+	"github.com/ethereum/go-ethereum/p2p"
+	"gopkg.in/fatih/set.v0"
+)
+
+const (
+	protocolVersion = 0x02
+)
+
+type peer struct {
+	host *Whisper
+	peer *p2p.Peer
+	ws   p2p.MsgReadWriter
+
+	// XXX Eventually this is going to reach exceptional large space. We need an expiry here
+	known *set.Set
+
+	quit chan struct{}
+}
+
+func NewPeer(host *Whisper, p *p2p.Peer, ws p2p.MsgReadWriter) *peer {
+	return &peer{host, p, ws, set.New(), make(chan struct{})}
+}
+
+func (self *peer) init() error {
+	if err := self.handleStatus(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (self *peer) start() {
+	go self.update()
+	self.peer.Infoln("whisper started")
+}
+
+func (self *peer) stop() {
+	self.peer.Infoln("whisper stopped")
+
+	close(self.quit)
+}
+
+func (self *peer) update() {
+	relay := time.NewTicker(300 * time.Millisecond)
+out:
+	for {
+		select {
+		case <-relay.C:
+			err := self.broadcast(self.host.envelopes())
+			if err != nil {
+				self.peer.Infoln(err)
+				break out
+			}
+
+		case <-self.quit:
+			break out
+		}
+	}
+}
+
+func (self *peer) broadcast(envelopes []*Envelope) error {
+	envs := make([]interface{}, len(envelopes))
+	i := 0
+	for _, envelope := range envelopes {
+		if !self.known.Has(envelope.Hash()) {
+			envs[i] = envelope
+			self.known.Add(envelope.Hash())
+			i++
+		}
+	}
+
+	if i > 0 {
+		msg := p2p.NewMsg(envelopesMsg, envs[:i]...)
+		if err := self.ws.WriteMsg(msg); err != nil {
+			return err
+		}
+		self.peer.Infoln("broadcasted", i, "message(s)")
+	}
+
+	return nil
+}
+
+func (self *peer) addKnown(envelope *Envelope) {
+	self.known.Add(envelope.Hash())
+}
+
+func (self *peer) handleStatus() error {
+	ws := self.ws
+
+	if err := ws.WriteMsg(self.statusMsg()); err != nil {
+		return err
+	}
+
+	msg, err := ws.ReadMsg()
+	if err != nil {
+		return err
+	}
+
+	if msg.Code != statusMsg {
+		return fmt.Errorf("peer send %x before status msg", msg.Code)
+	}
+
+	data, err := ioutil.ReadAll(msg.Payload)
+	if err != nil {
+		return err
+	}
+
+	if len(data) == 0 {
+		return fmt.Errorf("malformed status. data len = 0")
+	}
+
+	if pv := data[0]; pv != protocolVersion {
+		return fmt.Errorf("protocol version mismatch %d != %d", pv, protocolVersion)
+	}
+
+	return nil
+}
+
+func (self *peer) statusMsg() p2p.Msg {
+	return p2p.NewMsg(statusMsg, protocolVersion)
+}
diff --git a/whisper/sort.go b/whisper/sort.go
new file mode 100644
index 000000000..8c5b46e9e
--- /dev/null
+++ b/whisper/sort.go
@@ -0,0 +1,25 @@
+package whisper
+
+import "sort"
+
+type sortedKeys struct {
+	k []int32
+}
+
+func (self *sortedKeys) Len() int           { return len(self.k) }
+func (self *sortedKeys) Less(i, j int) bool { return self.k[i] < self.k[j] }
+func (self *sortedKeys) Swap(i, j int)      { self.k[i], self.k[j] = self.k[j], self.k[i] }
+
+func sortKeys(m map[int32]Hash) []int32 {
+	sorted := new(sortedKeys)
+	sorted.k = make([]int32, len(m))
+	i := 0
+	for key, _ := range m {
+		sorted.k[i] = key
+		i++
+	}
+
+	sort.Sort(sorted)
+
+	return sorted.k
+}
diff --git a/whisper/sort_test.go b/whisper/sort_test.go
new file mode 100644
index 000000000..5d8177d41
--- /dev/null
+++ b/whisper/sort_test.go
@@ -0,0 +1,19 @@
+package whisper
+
+import "testing"
+
+func TestSorting(t *testing.T) {
+	m := map[int32]Hash{
+		1: HS("1"),
+		3: HS("3"),
+		2: HS("2"),
+		5: HS("5"),
+	}
+	exp := []int32{1, 2, 3, 5}
+	res := sortKeys(m)
+	for i, k := range res {
+		if k != exp[i] {
+			t.Error(k, "failed. Expected", exp[i])
+		}
+	}
+}
diff --git a/whisper/util.go b/whisper/util.go
new file mode 100644
index 000000000..abef1d667
--- /dev/null
+++ b/whisper/util.go
@@ -0,0 +1,27 @@
+package whisper
+
+import "github.com/ethereum/go-ethereum/crypto"
+
+func hashTopic(topic []byte) []byte {
+	return crypto.Sha3(topic)[:4]
+}
+
+// NOTE this isn't DRY, but I don't want to iterate twice.
+
+// Returns a formatted topics byte slice.
+// data: unformatted data (e.g., no hashes needed)
+func Topics(data [][]byte) [][]byte {
+	d := make([][]byte, len(data))
+	for i, byts := range data {
+		d[i] = hashTopic(byts)
+	}
+	return d
+}
+
+func TopicsFromString(data []string) [][]byte {
+	d := make([][]byte, len(data))
+	for i, str := range data {
+		d[i] = hashTopic([]byte(str))
+	}
+	return d
+}
diff --git a/whisper/whisper.go b/whisper/whisper.go
new file mode 100644
index 000000000..356debd1c
--- /dev/null
+++ b/whisper/whisper.go
@@ -0,0 +1,246 @@
+package whisper
+
+import (
+	"bytes"
+	"crypto/ecdsa"
+	"errors"
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/event/filter"
+	"github.com/ethereum/go-ethereum/p2p"
+	"gopkg.in/fatih/set.v0"
+)
+
+// MOVE ME
+type Hash struct {
+	hash string
+}
+
+var EmptyHash Hash
+
+func H(hash []byte) Hash {
+	return Hash{string(hash)}
+}
+func HS(hash string) Hash {
+	return Hash{hash}
+}
+
+func (self Hash) Compare(other Hash) int {
+	return bytes.Compare([]byte(self.hash), []byte(other.hash))
+}
+
+// MOVE ME END
+
+const (
+	statusMsg    = 0x0
+	envelopesMsg = 0x01
+)
+
+type MessageEvent struct {
+	To      *ecdsa.PrivateKey
+	From    *ecdsa.PublicKey
+	Message *Message
+}
+
+const DefaultTtl = 50 * time.Second
+
+type Whisper struct {
+	protocol p2p.Protocol
+	filters  *filter.Filters
+
+	mmu      sync.RWMutex
+	messages map[Hash]*Envelope
+	expiry   map[uint32]*set.SetNonTS
+
+	quit chan struct{}
+
+	keys []*ecdsa.PrivateKey
+}
+
+func New() *Whisper {
+	whisper := &Whisper{
+		messages: make(map[Hash]*Envelope),
+		filters:  filter.New(),
+		expiry:   make(map[uint32]*set.SetNonTS),
+		quit:     make(chan struct{}),
+	}
+	whisper.filters.Start()
+	go whisper.update()
+
+	// XXX TODO REMOVE TESTING CODE
+	msg := NewMessage([]byte(fmt.Sprintf("Hello world. This is whisper-go. Incase you're wondering; the time is %v", time.Now())))
+	envelope, _ := msg.Seal(DefaultPow, Opts{
+		Ttl: DefaultTtl,
+	})
+	if err := whisper.Send(envelope); err != nil {
+		fmt.Println(err)
+	}
+	// XXX TODO REMOVE TESTING CODE
+
+	// p2p whisper sub protocol handler
+	whisper.protocol = p2p.Protocol{
+		Name:    "shh",
+		Version: 2,
+		Length:  2,
+		Run:     whisper.msgHandler,
+	}
+
+	return whisper
+}
+
+func (self *Whisper) Stop() {
+	close(self.quit)
+}
+
+func (self *Whisper) Send(envelope *Envelope) error {
+	return self.add(envelope)
+}
+
+func (self *Whisper) NewIdentity() *ecdsa.PrivateKey {
+	key, err := crypto.GenerateKey()
+	if err != nil {
+		panic(err)
+	}
+	self.keys = append(self.keys, key)
+
+	return key
+}
+
+func (self *Whisper) HasIdentity(key *ecdsa.PrivateKey) bool {
+	for _, key := range self.keys {
+		if key.D.Cmp(key.D) == 0 {
+			return true
+		}
+	}
+	return false
+}
+
+func (self *Whisper) Watch(opts Filter) int {
+	return self.filters.Install(filter.Generic{
+		Str1: string(crypto.FromECDSA(opts.To)),
+		Str2: string(crypto.FromECDSAPub(opts.From)),
+		Fn: func(data interface{}) {
+			opts.Fn(data.(*Message))
+		},
+	})
+}
+
+// Main handler for passing whisper messages to whisper peer objects
+func (self *Whisper) msgHandler(peer *p2p.Peer, ws p2p.MsgReadWriter) error {
+	wpeer := NewPeer(self, peer, ws)
+	// initialise whisper peer (handshake/status)
+	if err := wpeer.init(); err != nil {
+		return err
+	}
+	// kick of the main handler for broadcasting/managing envelopes
+	go wpeer.start()
+	defer wpeer.stop()
+
+	// Main *read* loop. Writing is done by the peer it self.
+	for {
+		msg, err := ws.ReadMsg()
+		if err != nil {
+			return err
+		}
+
+		envelope, err := NewEnvelopeFromReader(msg.Payload)
+		if err != nil {
+			peer.Infoln(err)
+			continue
+		}
+
+		if err := self.add(envelope); err != nil {
+			// TODO Punish peer here. Invalid envelope.
+			peer.Infoln(err)
+		}
+		wpeer.addKnown(envelope)
+	}
+}
+
+// takes care of adding envelopes to the messages pool. At this moment no sanity checks are being performed.
+func (self *Whisper) add(envelope *Envelope) error {
+	if !envelope.valid() {
+		return errors.New("invalid pow provided for envelope")
+	}
+
+	self.mmu.Lock()
+	defer self.mmu.Unlock()
+
+	hash := envelope.Hash()
+	self.messages[hash] = envelope
+	if self.expiry[envelope.Expiry] == nil {
+		self.expiry[envelope.Expiry] = set.NewNonTS()
+	}
+
+	if !self.expiry[envelope.Expiry].Has(hash) {
+		self.expiry[envelope.Expiry].Add(hash)
+		self.postEvent(envelope)
+	}
+
+	return nil
+}
+
+func (self *Whisper) update() {
+	expire := time.NewTicker(800 * time.Millisecond)
+out:
+	for {
+		select {
+		case <-expire.C:
+			self.expire()
+		case <-self.quit:
+			break out
+		}
+	}
+}
+
+func (self *Whisper) expire() {
+	self.mmu.Lock()
+	defer self.mmu.Unlock()
+
+	now := uint32(time.Now().Unix())
+	for then, hashSet := range self.expiry {
+		if then > now {
+			continue
+		}
+
+		hashSet.Each(func(v interface{}) bool {
+			delete(self.messages, v.(Hash))
+			return true
+		})
+		self.expiry[then].Clear()
+	}
+}
+
+func (self *Whisper) envelopes() (envelopes []*Envelope) {
+	self.mmu.RLock()
+	defer self.mmu.RUnlock()
+
+	envelopes = make([]*Envelope, len(self.messages))
+	i := 0
+	for _, envelope := range self.messages {
+		envelopes[i] = envelope
+		i++
+	}
+
+	return
+}
+
+func (self *Whisper) postEvent(envelope *Envelope) {
+	for _, key := range self.keys {
+		if message, err := envelope.Open(key); err == nil {
+			// Create a custom filter?
+			self.filters.Notify(filter.Generic{
+				Str1: string(crypto.FromECDSA(key)), Str2: string(crypto.FromECDSAPub(message.Recover())),
+			}, message)
+		} else {
+			fmt.Println(err)
+		}
+	}
+}
+
+func (self *Whisper) Protocol() p2p.Protocol {
+	return self.protocol
+}
diff --git a/whisper/whisper_test.go b/whisper/whisper_test.go
new file mode 100644
index 000000000..107cb8c97
--- /dev/null
+++ b/whisper/whisper_test.go
@@ -0,0 +1,47 @@
+package whisper
+
+import (
+	"fmt"
+	"testing"
+	"time"
+)
+
+func TestKeyManagement(t *testing.T) {
+	whisper := New()
+
+	key := whisper.NewIdentity()
+	if !whisper.HasIdentity(key) {
+		t.Error("expected whisper to have identify")
+	}
+}
+
+func TestEvent(t *testing.T) {
+	res := make(chan *Message, 1)
+	whisper := New()
+	id := whisper.NewIdentity()
+	whisper.Watch(Filter{
+		To: id,
+		Fn: func(msg *Message) {
+			res <- msg
+		},
+	})
+
+	msg := NewMessage([]byte(fmt.Sprintf("Hello world. This is whisper-go. Incase you're wondering; the time is %v", time.Now())))
+	envelope, err := msg.Seal(DefaultPow, Opts{
+		Ttl:  DefaultTtl,
+		From: id,
+		To:   &id.PublicKey,
+	})
+	if err != nil {
+		fmt.Println(err)
+		t.FailNow()
+	}
+
+	tick := time.NewTicker(time.Second)
+	whisper.postEvent(envelope)
+	select {
+	case <-res:
+	case <-tick.C:
+		t.Error("did not receive message")
+	}
+}
diff --git a/wire/.gitignore b/wire/.gitignore
new file mode 100644
index 000000000..f725d58d1
--- /dev/null
+++ b/wire/.gitignore
@@ -0,0 +1,12 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile ~/.gitignore_global
+
+/tmp
+*/**/*un~
+*un~
+.DS_Store
+*/**/.DS_Store
+
diff --git a/wire/README.md b/wire/README.md
new file mode 100644
index 000000000..7f63688b3
--- /dev/null
+++ b/wire/README.md
@@ -0,0 +1,36 @@
+# ethwire
+
+The ethwire package contains the ethereum wire protocol. The ethwire
+package is required to write and read from the ethereum network.
+
+# Installation
+
+`go get github.com/ethereum/ethwire-go`
+
+# Messaging overview
+
+The Ethereum Wire protocol defines the communication between the nodes
+running Ethereum. Further reader reading can be done on the
+[Wiki](http://wiki.ethereum.org/index.php/Wire_Protocol).
+
+# Reading Messages
+
+```go
+// Read and validate the next eth message from the provided connection.
+// returns a error message with the details.
+msg, err := ethwire.ReadMessage(conn)
+if err != nil {
+  // Handle error
+}
+```
+
+# Writing Messages
+
+```go
+// Constructs a message which can be interpreted by the eth network.
+// Write the inventory to network
+err := ethwire.WriteMessage(conn, &Msg{
+  Type: ethwire.MsgInvTy,
+  Data : []interface{}{...},
+})
+```
diff --git a/wire/client_identity.go b/wire/client_identity.go
new file mode 100644
index 000000000..0a268024a
--- /dev/null
+++ b/wire/client_identity.go
@@ -0,0 +1,56 @@
+package wire
+
+import (
+	"fmt"
+	"runtime"
+)
+
+// should be used in Peer handleHandshake, incorporate Caps, ProtocolVersion, Pubkey etc.
+type ClientIdentity interface {
+	String() string
+}
+
+type SimpleClientIdentity struct {
+	clientIdentifier string
+	version          string
+	customIdentifier string
+	os               string
+	implementation   string
+}
+
+func NewSimpleClientIdentity(clientIdentifier string, version string, customIdentifier string) *SimpleClientIdentity {
+	clientIdentity := &SimpleClientIdentity{
+		clientIdentifier: clientIdentifier,
+		version:          version,
+		customIdentifier: customIdentifier,
+		os:               runtime.GOOS,
+		implementation:   runtime.Version(),
+	}
+
+	return clientIdentity
+}
+
+func (c *SimpleClientIdentity) init() {
+}
+
+func (c *SimpleClientIdentity) String() string {
+	var id string
+	if len(c.customIdentifier) > 0 {
+		id = "/" + c.customIdentifier
+	}
+
+	return fmt.Sprintf("%s/v%s%s/%s/%s",
+		c.clientIdentifier,
+		c.version,
+		id,
+		c.os,
+		c.implementation)
+}
+
+func (c *SimpleClientIdentity) SetCustomIdentifier(customIdentifier string) {
+	c.customIdentifier = customIdentifier
+}
+
+func (c *SimpleClientIdentity) GetCustomIdentifier() string {
+	return c.customIdentifier
+}
diff --git a/wire/client_identity_test.go b/wire/client_identity_test.go
new file mode 100644
index 000000000..c0e7a0159
--- /dev/null
+++ b/wire/client_identity_test.go
@@ -0,0 +1,30 @@
+package wire
+
+import (
+	"fmt"
+	"runtime"
+	"testing"
+)
+
+func TestClientIdentity(t *testing.T) {
+	clientIdentity := NewSimpleClientIdentity("Ethereum(G)", "0.5.16", "test")
+	clientString := clientIdentity.String()
+	expected := fmt.Sprintf("Ethereum(G)/v0.5.16/test/%s/%s", runtime.GOOS, runtime.Version())
+	if clientString != expected {
+		t.Errorf("Expected clientIdentity to be %q, got %q", expected, clientString)
+	}
+	customIdentifier := clientIdentity.GetCustomIdentifier()
+	if customIdentifier != "test" {
+		t.Errorf("Expected clientIdentity.GetCustomIdentifier() to be 'test', got %q", customIdentifier)
+	}
+	clientIdentity.SetCustomIdentifier("test2")
+	customIdentifier = clientIdentity.GetCustomIdentifier()
+	if customIdentifier != "test2" {
+		t.Errorf("Expected clientIdentity.GetCustomIdentifier() to be 'test2', got %q", customIdentifier)
+	}
+	clientString = clientIdentity.String()
+	expected = fmt.Sprintf("Ethereum(G)/v0.5.16/test2/%s/%s", runtime.GOOS, runtime.Version())
+	if clientString != expected {
+		t.Errorf("Expected clientIdentity to be %q, got %q", expected, clientString)
+	}
+}
diff --git a/wire/messages2.go b/wire/messages2.go
new file mode 100644
index 000000000..acbd9e0d5
--- /dev/null
+++ b/wire/messages2.go
@@ -0,0 +1,199 @@
+package wire
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"net"
+	"time"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+// The connection object allows you to set up a connection to the Ethereum network.
+// The Connection object takes care of all encoding and sending objects properly over
+// the network.
+type Connection struct {
+	conn            net.Conn
+	nTimeout        time.Duration
+	pendingMessages Messages
+}
+
+// Create a new connection to the Ethereum network
+func New(conn net.Conn) *Connection {
+	return &Connection{conn: conn, nTimeout: 500}
+}
+
+// Read, reads from the network. It will block until the next message is received.
+func (self *Connection) Read() *Msg {
+	if len(self.pendingMessages) == 0 {
+		self.readMessages()
+	}
+
+	ret := self.pendingMessages[0]
+	self.pendingMessages = self.pendingMessages[1:]
+
+	return ret
+
+}
+
+// Write to the Ethereum network specifying the type of the message and
+// the data. Data can be of type RlpEncodable or []interface{}. Returns
+// nil or if something went wrong an error.
+func (self *Connection) Write(typ MsgType, v ...interface{}) error {
+	var pack []byte
+
+	slice := [][]interface{}{[]interface{}{byte(typ)}}
+	for _, value := range v {
+		if encodable, ok := value.(ethutil.RlpEncodeDecode); ok {
+			slice = append(slice, encodable.RlpValue())
+		} else if raw, ok := value.([]interface{}); ok {
+			slice = append(slice, raw)
+		} else {
+			panic(fmt.Sprintf("Unable to 'write' object of type %T", value))
+		}
+	}
+
+	// Encode the type and the (RLP encoded) data for sending over the wire
+	encoded := ethutil.NewValue(slice).Encode()
+	payloadLength := ethutil.NumberToBytes(uint32(len(encoded)), 32)
+
+	// Write magic token and payload length (first 8 bytes)
+	pack = append(MagicToken, payloadLength...)
+	pack = append(pack, encoded...)
+
+	// Write to the connection
+	_, err := self.conn.Write(pack)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (self *Connection) readMessage(data []byte) (msg *Msg, remaining []byte, done bool, err error) {
+	if len(data) == 0 {
+		return nil, nil, true, nil
+	}
+
+	if len(data) <= 8 {
+		return nil, remaining, false, errors.New("Invalid message")
+	}
+
+	// Check if the received 4 first bytes are the magic token
+	if bytes.Compare(MagicToken, data[:4]) != 0 {
+		return nil, nil, false, fmt.Errorf("MagicToken mismatch. Received %v", data[:4])
+	}
+
+	messageLength := ethutil.BytesToNumber(data[4:8])
+	remaining = data[8+messageLength:]
+	if int(messageLength) > len(data[8:]) {
+		return nil, nil, false, fmt.Errorf("message length %d, expected %d", len(data[8:]), messageLength)
+	}
+
+	message := data[8 : 8+messageLength]
+	decoder := ethutil.NewValueFromBytes(message)
+	// Type of message
+	t := decoder.Get(0).Uint()
+	// Actual data
+	d := decoder.SliceFrom(1)
+
+	msg = &Msg{
+		Type: MsgType(t),
+		Data: d,
+	}
+
+	return
+}
+
+// The basic message reader waits for data on the given connection, decoding
+// and doing a few sanity checks such as if there's a data type and
+// unmarhals the given data
+func (self *Connection) readMessages() (err error) {
+	// The recovering function in case anything goes horribly wrong
+	defer func() {
+		if r := recover(); r != nil {
+			err = fmt.Errorf("wire.ReadMessage error: %v", r)
+		}
+	}()
+
+	// Buff for writing network message to
+	//buff := make([]byte, 1440)
+	var buff []byte
+	var totalBytes int
+	for {
+		// Give buffering some time
+		self.conn.SetReadDeadline(time.Now().Add(self.nTimeout * time.Millisecond))
+		// Create a new temporarily buffer
+		b := make([]byte, 1440)
+		// Wait for a message from this peer
+		n, _ := self.conn.Read(b)
+		if err != nil && n == 0 {
+			if err.Error() != "EOF" {
+				fmt.Println("err now", err)
+				return err
+			} else {
+				break
+			}
+
+			// Messages can't be empty
+		} else if n == 0 {
+			break
+		}
+
+		buff = append(buff, b[:n]...)
+		totalBytes += n
+	}
+
+	// Reslice buffer
+	buff = buff[:totalBytes]
+	msg, remaining, done, err := self.readMessage(buff)
+	for ; done != true; msg, remaining, done, err = self.readMessage(remaining) {
+		//log.Println("rx", msg)
+
+		if msg != nil {
+			self.pendingMessages = append(self.pendingMessages, msg)
+		}
+	}
+
+	return
+}
+
+func ReadMessage(data []byte) (msg *Msg, remaining []byte, done bool, err error) {
+	if len(data) == 0 {
+		return nil, nil, true, nil
+	}
+
+	if len(data) <= 8 {
+		return nil, remaining, false, errors.New("Invalid message")
+	}
+
+	// Check if the received 4 first bytes are the magic token
+	if bytes.Compare(MagicToken, data[:4]) != 0 {
+		return nil, nil, false, fmt.Errorf("MagicToken mismatch. Received %v", data[:4])
+	}
+
+	messageLength := ethutil.BytesToNumber(data[4:8])
+	remaining = data[8+messageLength:]
+	if int(messageLength) > len(data[8:]) {
+		return nil, nil, false, fmt.Errorf("message length %d, expected %d", len(data[8:]), messageLength)
+	}
+
+	message := data[8 : 8+messageLength]
+	decoder := ethutil.NewValueFromBytes(message)
+	// Type of message
+	t := decoder.Get(0).Uint()
+	// Actual data
+	d := decoder.SliceFrom(1)
+
+	msg = &Msg{
+		Type: MsgType(t),
+		Data: d,
+	}
+
+	return
+}
+
+func bufferedRead(conn net.Conn) ([]byte, error) {
+	return nil, nil
+}
diff --git a/wire/messaging.go b/wire/messaging.go
new file mode 100644
index 000000000..9c6cb5944
--- /dev/null
+++ b/wire/messaging.go
@@ -0,0 +1,178 @@
+// Package wire provides low level access to the Ethereum network and allows
+// you to broadcast data over the network.
+package wire
+
+import (
+	"bytes"
+	"fmt"
+	"net"
+	"time"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+// Connection interface describing the methods required to implement the wire protocol.
+type Conn interface {
+	Write(typ MsgType, v ...interface{}) error
+	Read() *Msg
+}
+
+// The magic token which should be the first 4 bytes of every message and can be used as separator between messages.
+var MagicToken = []byte{34, 64, 8, 145}
+
+type MsgType byte
+
+const (
+	// Values are given explicitly instead of by iota because these values are
+	// defined by the wire protocol spec; it is easier for humans to ensure
+	// correctness when values are explicit.
+	MsgHandshakeTy = 0x00
+	MsgDiscTy      = 0x01
+	MsgPingTy      = 0x02
+	MsgPongTy      = 0x03
+	MsgGetPeersTy  = 0x04
+	MsgPeersTy     = 0x05
+
+	MsgStatusTy         = 0x10
+	MsgTxTy             = 0x12
+	MsgGetBlockHashesTy = 0x13
+	MsgBlockHashesTy    = 0x14
+	MsgGetBlocksTy      = 0x15
+	MsgBlockTy          = 0x16
+	MsgNewBlockTy       = 0x17
+)
+
+var msgTypeToString = map[MsgType]string{
+	MsgHandshakeTy: "Handshake",
+	MsgDiscTy:      "Disconnect",
+	MsgPingTy:      "Ping",
+	MsgPongTy:      "Pong",
+	MsgGetPeersTy:  "Get peers",
+	MsgStatusTy:    "Status",
+	MsgPeersTy:     "Peers",
+	MsgTxTy:        "Transactions",
+	MsgBlockTy:     "Blocks",
+	//MsgGetTxsTy:         "Get Txs",
+	MsgGetBlockHashesTy: "Get block hashes",
+	MsgBlockHashesTy:    "Block hashes",
+	MsgGetBlocksTy:      "Get blocks",
+}
+
+func (mt MsgType) String() string {
+	return msgTypeToString[mt]
+}
+
+type Msg struct {
+	Type MsgType // Specifies how the encoded data should be interpreted
+	//Data []byte
+	Data *ethutil.Value
+}
+
+func NewMessage(msgType MsgType, data interface{}) *Msg {
+	return &Msg{
+		Type: msgType,
+		Data: ethutil.NewValue(data),
+	}
+}
+
+type Messages []*Msg
+
+// The basic message reader waits for data on the given connection, decoding
+// and doing a few sanity checks such as if there's a data type and
+// unmarhals the given data
+func ReadMessages(conn net.Conn) (msgs []*Msg, err error) {
+	// The recovering function in case anything goes horribly wrong
+	defer func() {
+		if r := recover(); r != nil {
+			err = fmt.Errorf("wire.ReadMessage error: %v", r)
+		}
+	}()
+
+	var (
+		buff      []byte
+		messages  [][]byte
+		msgLength int
+	)
+
+	for {
+		// Give buffering some time
+		conn.SetReadDeadline(time.Now().Add(5 * time.Millisecond))
+		// Create a new temporarily buffer
+		b := make([]byte, 1440)
+		n, _ := conn.Read(b)
+		if err != nil && n == 0 {
+			if err.Error() != "EOF" {
+				fmt.Println("err now", err)
+				return nil, err
+			} else {
+				break
+			}
+		}
+
+		if n == 0 && len(buff) == 0 {
+			// If there's nothing on the wire wait for a bit
+			time.Sleep(200 * time.Millisecond)
+
+			continue
+		}
+
+		buff = append(buff, b[:n]...)
+		if msgLength == 0 {
+			// Check if the received 4 first bytes are the magic token
+			if bytes.Compare(MagicToken, buff[:4]) != 0 {
+				return nil, fmt.Errorf("MagicToken mismatch. Received %v", buff[:4])
+			}
+
+			// Read the length of the message
+			msgLength = int(ethutil.BytesToNumber(buff[4:8]))
+
+			// Remove the token and length
+			buff = buff[8:]
+		}
+
+		if len(buff) >= msgLength {
+			messages = append(messages, buff[:msgLength])
+			buff = buff[msgLength:]
+			msgLength = 0
+
+			if len(buff) == 0 {
+				break
+			}
+		}
+	}
+
+	for _, m := range messages {
+		decoder := ethutil.NewValueFromBytes(m)
+		// Type of message
+		t := decoder.Get(0).Uint()
+		// Actual data
+		d := decoder.SliceFrom(1)
+
+		msgs = append(msgs, &Msg{Type: MsgType(t), Data: d})
+	}
+
+	return
+}
+
+// The basic message writer takes care of writing data over the given
+// connection and does some basic error checking
+func WriteMessage(conn net.Conn, msg *Msg) error {
+	var pack []byte
+
+	// Encode the type and the (RLP encoded) data for sending over the wire
+	encoded := ethutil.NewValue(append([]interface{}{byte(msg.Type)}, msg.Data.Slice()...)).Encode()
+	payloadLength := ethutil.NumberToBytes(uint32(len(encoded)), 32)
+
+	// Write magic token and payload length (first 8 bytes)
+	pack = append(MagicToken, payloadLength...)
+	pack = append(pack, encoded...)
+	//fmt.Printf("payload %v (%v) %q\n", msg.Type, conn.RemoteAddr(), encoded)
+
+	// Write to the connection
+	_, err := conn.Write(pack)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/xeth/config.go b/xeth/config.go
new file mode 100644
index 000000000..ad0660d75
--- /dev/null
+++ b/xeth/config.go
@@ -0,0 +1,35 @@
+package xeth
+
+import "github.com/ethereum/go-ethereum/ethutil"
+
+var cnfCtr = ethutil.Hex2Bytes("661005d2720d855f1d9976f88bb10c1a3398c77f")
+
+type Config struct {
+	pipe *XEth
+}
+
+func (self *Config) Get(name string) *Object {
+	configCtrl := self.pipe.World().safeGet(cnfCtr)
+	var addr []byte
+
+	switch name {
+	case "NameReg":
+		addr = []byte{0}
+	case "DnsReg":
+		objectAddr := configCtrl.GetStorage(ethutil.BigD([]byte{0}))
+		domainAddr := (&Object{self.pipe.World().safeGet(objectAddr.Bytes())}).StorageString("DnsReg").Bytes()
+		return &Object{self.pipe.World().safeGet(domainAddr)}
+	case "MergeMining":
+		addr = []byte{4}
+	default:
+		addr = ethutil.RightPadBytes([]byte(name), 32)
+	}
+
+	objectAddr := configCtrl.GetStorage(ethutil.BigD(addr))
+
+	return &Object{self.pipe.World().safeGet(objectAddr.Bytes())}
+}
+
+func (self *Config) Exist() bool {
+	return self.pipe.World().Get(cnfCtr) != nil
+}
diff --git a/xeth/hexface.go b/xeth/hexface.go
new file mode 100644
index 000000000..bfd2dddd9
--- /dev/null
+++ b/xeth/hexface.go
@@ -0,0 +1,255 @@
+package xeth
+
+import (
+	"bytes"
+	"encoding/json"
+	"sync/atomic"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+)
+
+type JSXEth struct {
+	*XEth
+}
+
+func NewJSXEth(eth core.EthManager) *JSXEth {
+	return &JSXEth{New(eth)}
+}
+
+func (self *JSXEth) BlockByHash(strHash string) *JSBlock {
+	hash := ethutil.Hex2Bytes(strHash)
+	block := self.obj.ChainManager().GetBlock(hash)
+
+	return NewJSBlock(block)
+}
+
+func (self *JSXEth) BlockByNumber(num int32) *JSBlock {
+	if num == -1 {
+		return NewJSBlock(self.obj.ChainManager().CurrentBlock())
+	}
+
+	return NewJSBlock(self.obj.ChainManager().GetBlockByNumber(uint64(num)))
+}
+
+func (self *JSXEth) Block(v interface{}) *JSBlock {
+	if n, ok := v.(int32); ok {
+		return self.BlockByNumber(n)
+	} else if str, ok := v.(string); ok {
+		return self.BlockByHash(str)
+	} else if f, ok := v.(float64); ok { // Don't ask ...
+		return self.BlockByNumber(int32(f))
+	}
+
+	return nil
+}
+
+func (self *JSXEth) Key() *JSKey {
+	return NewJSKey(self.obj.KeyManager().KeyPair())
+}
+
+func (self *JSXEth) StateObject(addr string) *JSObject {
+	object := &Object{self.World().safeGet(ethutil.Hex2Bytes(addr))}
+
+	return NewJSObject(object)
+}
+
+func (self *JSXEth) PeerCount() int {
+	return self.obj.PeerCount()
+}
+
+func (self *JSXEth) Peers() []JSPeer {
+	var peers []JSPeer
+	for peer := self.obj.Peers().Front(); peer != nil; peer = peer.Next() {
+		p := peer.Value.(core.Peer)
+		// we only want connected peers
+		if atomic.LoadInt32(p.Connected()) != 0 {
+			peers = append(peers, *NewJSPeer(p))
+		}
+	}
+
+	return peers
+}
+
+func (self *JSXEth) IsMining() bool {
+	return self.obj.IsMining()
+}
+
+func (self *JSXEth) IsListening() bool {
+	return self.obj.IsListening()
+}
+
+func (self *JSXEth) CoinBase() string {
+	return ethutil.Bytes2Hex(self.obj.KeyManager().Address())
+}
+
+func (self *JSXEth) NumberToHuman(balance string) string {
+	b := ethutil.Big(balance)
+
+	return ethutil.CurrencyToString(b)
+}
+
+func (self *JSXEth) StorageAt(addr, storageAddr string) string {
+	storage := self.World().SafeGet(ethutil.Hex2Bytes(addr)).Storage(ethutil.Hex2Bytes(storageAddr))
+
+	return ethutil.Bytes2Hex(storage.Bytes())
+}
+
+func (self *JSXEth) BalanceAt(addr string) string {
+	return self.World().SafeGet(ethutil.Hex2Bytes(addr)).Balance().String()
+}
+
+func (self *JSXEth) TxCountAt(address string) int {
+	return int(self.World().SafeGet(ethutil.Hex2Bytes(address)).Nonce)
+}
+
+func (self *JSXEth) CodeAt(address string) string {
+	return ethutil.Bytes2Hex(self.World().SafeGet(ethutil.Hex2Bytes(address)).Code)
+}
+
+func (self *JSXEth) IsContract(address string) bool {
+	return len(self.World().SafeGet(ethutil.Hex2Bytes(address)).Code) > 0
+}
+
+func (self *JSXEth) SecretToAddress(key string) string {
+	pair, err := crypto.NewKeyPairFromSec(ethutil.Hex2Bytes(key))
+	if err != nil {
+		return ""
+	}
+
+	return ethutil.Bytes2Hex(pair.Address())
+}
+
+func (self *JSXEth) Execute(addr, value, gas, price, data string) (string, error) {
+	ret, err := self.ExecuteObject(&Object{
+		self.World().safeGet(ethutil.Hex2Bytes(addr))},
+		ethutil.Hex2Bytes(data),
+		ethutil.NewValue(value),
+		ethutil.NewValue(gas),
+		ethutil.NewValue(price),
+	)
+
+	return ethutil.Bytes2Hex(ret), err
+}
+
+type KeyVal struct {
+	Key   string `json:"key"`
+	Value string `json:"value"`
+}
+
+func (self *JSXEth) EachStorage(addr string) string {
+	var values []KeyVal
+	object := self.World().SafeGet(ethutil.Hex2Bytes(addr))
+	object.EachStorage(func(name string, value *ethutil.Value) {
+		value.Decode()
+		values = append(values, KeyVal{ethutil.Bytes2Hex([]byte(name)), ethutil.Bytes2Hex(value.Bytes())})
+	})
+
+	valuesJson, err := json.Marshal(values)
+	if err != nil {
+		return ""
+	}
+
+	return string(valuesJson)
+}
+
+func (self *JSXEth) ToAscii(str string) string {
+	padded := ethutil.RightPadBytes([]byte(str), 32)
+
+	return "0x" + ethutil.Bytes2Hex(padded)
+}
+
+func (self *JSXEth) FromAscii(str string) string {
+	if ethutil.IsHex(str) {
+		str = str[2:]
+	}
+
+	return string(bytes.Trim(ethutil.Hex2Bytes(str), "\x00"))
+}
+
+func (self *JSXEth) FromNumber(str string) string {
+	if ethutil.IsHex(str) {
+		str = str[2:]
+	}
+
+	return ethutil.BigD(ethutil.Hex2Bytes(str)).String()
+}
+
+func (self *JSXEth) Transact(key, toStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
+	var (
+		to       []byte
+		value    = ethutil.NewValue(valueStr)
+		gas      = ethutil.NewValue(gasStr)
+		gasPrice = ethutil.NewValue(gasPriceStr)
+		data     []byte
+	)
+
+	if ethutil.IsHex(codeStr) {
+		data = ethutil.Hex2Bytes(codeStr[2:])
+	} else {
+		data = ethutil.Hex2Bytes(codeStr)
+	}
+
+	if ethutil.IsHex(toStr) {
+		to = ethutil.Hex2Bytes(toStr[2:])
+	} else {
+		to = ethutil.Hex2Bytes(toStr)
+	}
+
+	var keyPair *crypto.KeyPair
+	var err error
+	if ethutil.IsHex(key) {
+		keyPair, err = crypto.NewKeyPairFromSec([]byte(ethutil.Hex2Bytes(key[2:])))
+	} else {
+		keyPair, err = crypto.NewKeyPairFromSec([]byte(ethutil.Hex2Bytes(key)))
+	}
+
+	if err != nil {
+		return "", err
+	}
+
+	tx, err := self.XEth.Transact(keyPair, to, value, gas, gasPrice, data)
+	if err != nil {
+		return "", err
+	}
+	if types.IsContractAddr(to) {
+		return ethutil.Bytes2Hex(core.AddressFromMessage(tx)), nil
+	}
+
+	return ethutil.Bytes2Hex(tx.Hash()), nil
+}
+
+func (self *JSXEth) PushTx(txStr string) (*JSReceipt, error) {
+	tx := types.NewTransactionFromBytes(ethutil.Hex2Bytes(txStr))
+	err := self.obj.TxPool().Add(tx)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewJSReciept(core.MessageCreatesContract(tx), core.AddressFromMessage(tx), tx.Hash(), tx.From()), nil
+}
+
+func (self *JSXEth) CompileMutan(code string) string {
+	data, err := self.XEth.CompileMutan(code)
+	if err != nil {
+		return err.Error()
+	}
+
+	return ethutil.Bytes2Hex(data)
+}
+
+func (self *JSXEth) FindInConfig(str string) string {
+	return ethutil.Bytes2Hex(self.World().Config().Get(str).Address())
+}
+
+func ToJSMessages(messages state.Messages) *ethutil.List {
+	var msgs []JSMessage
+	for _, m := range messages {
+		msgs = append(msgs, NewJSMessage(m))
+	}
+
+	return ethutil.NewList(msgs)
+}
diff --git a/xeth/js_types.go b/xeth/js_types.go
new file mode 100644
index 000000000..62867d6a9
--- /dev/null
+++ b/xeth/js_types.go
@@ -0,0 +1,236 @@
+package xeth
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+)
+
+// Block interface exposed to QML
+type JSBlock struct {
+	//Transactions string `json:"transactions"`
+	ref          *types.Block
+	Size         string        `json:"size"`
+	Number       int           `json:"number"`
+	Hash         string        `json:"hash"`
+	Transactions *ethutil.List `json:"transactions"`
+	Uncles       *ethutil.List `json:"uncles"`
+	Time         int64         `json:"time"`
+	Coinbase     string        `json:"coinbase"`
+	Name         string        `json:"name"`
+	GasLimit     string        `json:"gasLimit"`
+	GasUsed      string        `json:"gasUsed"`
+	PrevHash     string        `json:"prevHash"`
+	Bloom        string        `json:"bloom"`
+	Raw          string        `json:"raw"`
+}
+
+// Creates a new QML Block from a chain block
+func NewJSBlock(block *types.Block) *JSBlock {
+	if block == nil {
+		return &JSBlock{}
+	}
+
+	ptxs := make([]*JSTransaction, len(block.Transactions()))
+	for i, tx := range block.Transactions() {
+		ptxs[i] = NewJSTx(tx, block.State())
+	}
+	txlist := ethutil.NewList(ptxs)
+
+	puncles := make([]*JSBlock, len(block.Uncles))
+	for i, uncle := range block.Uncles {
+		puncles[i] = NewJSBlock(uncle)
+	}
+	ulist := ethutil.NewList(puncles)
+
+	return &JSBlock{
+		ref: block, Size: block.Size().String(),
+		Number: int(block.Number.Uint64()), GasUsed: block.GasUsed.String(),
+		GasLimit: block.GasLimit.String(), Hash: ethutil.Bytes2Hex(block.Hash()),
+		Transactions: txlist, Uncles: ulist,
+		Time:     block.Time,
+		Coinbase: ethutil.Bytes2Hex(block.Coinbase),
+		PrevHash: ethutil.Bytes2Hex(block.PrevHash),
+		Bloom:    ethutil.Bytes2Hex(block.LogsBloom),
+		Raw:      block.String(),
+	}
+}
+
+func (self *JSBlock) ToString() string {
+	if self.ref != nil {
+		return self.ref.String()
+	}
+
+	return ""
+}
+
+func (self *JSBlock) GetTransaction(hash string) *JSTransaction {
+	tx := self.ref.GetTransaction(ethutil.Hex2Bytes(hash))
+	if tx == nil {
+		return nil
+	}
+
+	return NewJSTx(tx, self.ref.State())
+}
+
+type JSTransaction struct {
+	ref *types.Transaction
+
+	Value           string `json:"value"`
+	Gas             string `json:"gas"`
+	GasPrice        string `json:"gasPrice"`
+	Hash            string `json:"hash"`
+	Address         string `json:"address"`
+	Sender          string `json:"sender"`
+	RawData         string `json:"rawData"`
+	Data            string `json:"data"`
+	Contract        bool   `json:"isContract"`
+	CreatesContract bool   `json:"createsContract"`
+	Confirmations   int    `json:"confirmations"`
+}
+
+func NewJSTx(tx *types.Transaction, state *state.StateDB) *JSTransaction {
+	hash := ethutil.Bytes2Hex(tx.Hash())
+	receiver := ethutil.Bytes2Hex(tx.To())
+	if receiver == "0000000000000000000000000000000000000000" {
+		receiver = ethutil.Bytes2Hex(core.AddressFromMessage(tx))
+	}
+	sender := ethutil.Bytes2Hex(tx.Sender())
+	createsContract := core.MessageCreatesContract(tx)
+
+	var data string
+	if createsContract {
+		data = strings.Join(core.Disassemble(tx.Data()), "\n")
+	} else {
+		data = ethutil.Bytes2Hex(tx.Data())
+	}
+
+	return &JSTransaction{ref: tx, Hash: hash, Value: ethutil.CurrencyToString(tx.Value()), Address: receiver, Contract: createsContract, Gas: tx.Gas().String(), GasPrice: tx.GasPrice().String(), Data: data, Sender: sender, CreatesContract: createsContract, RawData: ethutil.Bytes2Hex(tx.Data())}
+}
+
+func (self *JSTransaction) ToString() string {
+	return self.ref.String()
+}
+
+type JSKey struct {
+	Address    string `json:"address"`
+	PrivateKey string `json:"privateKey"`
+	PublicKey  string `json:"publicKey"`
+}
+
+func NewJSKey(key *crypto.KeyPair) *JSKey {
+	return &JSKey{ethutil.Bytes2Hex(key.Address()), ethutil.Bytes2Hex(key.PrivateKey), ethutil.Bytes2Hex(key.PublicKey)}
+}
+
+type JSObject struct {
+	*Object
+}
+
+func NewJSObject(object *Object) *JSObject {
+	return &JSObject{object}
+}
+
+type PReceipt struct {
+	CreatedContract bool   `json:"createdContract"`
+	Address         string `json:"address"`
+	Hash            string `json:"hash"`
+	Sender          string `json:"sender"`
+}
+
+func NewPReciept(contractCreation bool, creationAddress, hash, address []byte) *PReceipt {
+	return &PReceipt{
+		contractCreation,
+		ethutil.Bytes2Hex(creationAddress),
+		ethutil.Bytes2Hex(hash),
+		ethutil.Bytes2Hex(address),
+	}
+}
+
+// Peer interface exposed to QML
+
+type JSPeer struct {
+	ref          *core.Peer
+	Inbound      bool   `json:"isInbound"`
+	LastSend     int64  `json:"lastSend"`
+	LastPong     int64  `json:"lastPong"`
+	Ip           string `json:"ip"`
+	Port         int    `json:"port"`
+	Version      string `json:"version"`
+	LastResponse string `json:"lastResponse"`
+	Latency      string `json:"latency"`
+	Caps         string `json:"caps"`
+}
+
+func NewJSPeer(peer core.Peer) *JSPeer {
+	if peer == nil {
+		return nil
+	}
+
+	var ip []string
+	for _, i := range peer.Host() {
+		ip = append(ip, strconv.Itoa(int(i)))
+	}
+	ipAddress := strings.Join(ip, ".")
+
+	var caps []string
+	capsIt := peer.Caps().NewIterator()
+	for capsIt.Next() {
+		cap := capsIt.Value().Get(0).Str()
+		ver := capsIt.Value().Get(1).Uint()
+		caps = append(caps, fmt.Sprintf("%s/%d", cap, ver))
+	}
+
+	return &JSPeer{ref: &peer, Inbound: peer.Inbound(), LastSend: peer.LastSend().Unix(), LastPong: peer.LastPong(), Version: peer.Version(), Ip: ipAddress, Port: int(peer.Port()), Latency: peer.PingTime(), Caps: "[" + strings.Join(caps, ", ") + "]"}
+}
+
+type JSReceipt struct {
+	CreatedContract bool   `json:"createdContract"`
+	Address         string `json:"address"`
+	Hash            string `json:"hash"`
+	Sender          string `json:"sender"`
+}
+
+func NewJSReciept(contractCreation bool, creationAddress, hash, address []byte) *JSReceipt {
+	return &JSReceipt{
+		contractCreation,
+		ethutil.Bytes2Hex(creationAddress),
+		ethutil.Bytes2Hex(hash),
+		ethutil.Bytes2Hex(address),
+	}
+}
+
+type JSMessage struct {
+	To        string `json:"to"`
+	From      string `json:"from"`
+	Input     string `json:"input"`
+	Output    string `json:"output"`
+	Path      int32  `json:"path"`
+	Origin    string `json:"origin"`
+	Timestamp int32  `json:"timestamp"`
+	Coinbase  string `json:"coinbase"`
+	Block     string `json:"block"`
+	Number    int32  `json:"number"`
+	Value     string `json:"value"`
+}
+
+func NewJSMessage(message *state.Message) JSMessage {
+	return JSMessage{
+		To:        ethutil.Bytes2Hex(message.To),
+		From:      ethutil.Bytes2Hex(message.From),
+		Input:     ethutil.Bytes2Hex(message.Input),
+		Output:    ethutil.Bytes2Hex(message.Output),
+		Path:      int32(message.Path),
+		Origin:    ethutil.Bytes2Hex(message.Origin),
+		Timestamp: int32(message.Timestamp),
+		Coinbase:  ethutil.Bytes2Hex(message.Origin),
+		Block:     ethutil.Bytes2Hex(message.Block),
+		Number:    int32(message.Number.Int64()),
+		Value:     message.Value.String(),
+	}
+}
diff --git a/xeth/object.go b/xeth/object.go
new file mode 100644
index 000000000..a4ac41e89
--- /dev/null
+++ b/xeth/object.go
@@ -0,0 +1,26 @@
+package xeth
+
+import (
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/state"
+)
+
+type Object struct {
+	*state.StateObject
+}
+
+func (self *Object) StorageString(str string) *ethutil.Value {
+	if ethutil.IsHex(str) {
+		return self.Storage(ethutil.Hex2Bytes(str[2:]))
+	} else {
+		return self.Storage(ethutil.RightPadBytes([]byte(str), 32))
+	}
+}
+
+func (self *Object) StorageValue(addr *ethutil.Value) *ethutil.Value {
+	return self.Storage(addr.Bytes())
+}
+
+func (self *Object) Storage(addr []byte) *ethutil.Value {
+	return self.StateObject.GetStorage(ethutil.BigD(addr))
+}
diff --git a/xeth/pipe.go b/xeth/pipe.go
new file mode 100644
index 000000000..06820cc86
--- /dev/null
+++ b/xeth/pipe.go
@@ -0,0 +1,181 @@
+package xeth
+
+/*
+ * eXtended ETHereum
+ */
+
+import (
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/state"
+)
+
+var pipelogger = logger.NewLogger("XETH")
+
+type VmVars struct {
+	State *state.StateDB
+}
+
+type XEth struct {
+	obj          core.EthManager
+	blockManager *core.BlockManager
+	chainManager *core.ChainManager
+	world        *World
+
+	Vm VmVars
+}
+
+func New(obj core.EthManager) *XEth {
+	pipe := &XEth{
+		obj:          obj,
+		blockManager: obj.BlockManager(),
+		chainManager: obj.ChainManager(),
+	}
+	pipe.world = NewWorld(pipe)
+
+	return pipe
+}
+
+/*
+ * State / Account accessors
+ */
+func (self *XEth) Balance(addr []byte) *ethutil.Value {
+	return ethutil.NewValue(self.World().safeGet(addr).Balance)
+}
+
+func (self *XEth) Nonce(addr []byte) uint64 {
+	return self.World().safeGet(addr).Nonce
+}
+
+func (self *XEth) Block(hash []byte) *types.Block {
+	return self.chainManager.GetBlock(hash)
+}
+
+func (self *XEth) Storage(addr, storageAddr []byte) *ethutil.Value {
+	return self.World().safeGet(addr).GetStorage(ethutil.BigD(storageAddr))
+}
+
+func (self *XEth) Exists(addr []byte) bool {
+	return self.World().Get(addr) != nil
+}
+
+// Converts the given private key to an address
+func (self *XEth) ToAddress(priv []byte) []byte {
+	pair, err := crypto.NewKeyPairFromSec(priv)
+	if err != nil {
+		return nil
+	}
+
+	return pair.Address()
+}
+
+/*
+ * Execution helpers
+ */
+func (self *XEth) Execute(addr []byte, data []byte, value, gas, price *ethutil.Value) ([]byte, error) {
+	return self.ExecuteObject(&Object{self.World().safeGet(addr)}, data, value, gas, price)
+}
+
+func (self *XEth) ExecuteObject(object *Object, data []byte, value, gas, price *ethutil.Value) ([]byte, error) {
+	var (
+		initiator = state.NewStateObject(self.obj.KeyManager().KeyPair().Address())
+		block     = self.chainManager.CurrentBlock()
+	)
+
+	self.Vm.State = self.World().State().Copy()
+
+	vmenv := NewEnv(self.Vm.State, block, value.BigInt(), initiator.Address())
+	return vmenv.Call(initiator, object.Address(), data, gas.BigInt(), price.BigInt(), value.BigInt())
+}
+
+/*
+ * Transactional methods
+ */
+func (self *XEth) TransactString(key *crypto.KeyPair, rec string, value, gas, price *ethutil.Value, data []byte) (*types.Transaction, error) {
+	// Check if an address is stored by this address
+	var hash []byte
+	addr := self.World().Config().Get("NameReg").StorageString(rec).Bytes()
+	if len(addr) > 0 {
+		hash = addr
+	} else if ethutil.IsHex(rec) {
+		hash = ethutil.Hex2Bytes(rec[2:])
+	} else {
+		hash = ethutil.Hex2Bytes(rec)
+	}
+
+	return self.Transact(key, hash, value, gas, price, data)
+}
+
+func (self *XEth) Transact(key *crypto.KeyPair, to []byte, value, gas, price *ethutil.Value, data []byte) (*types.Transaction, error) {
+	var hash []byte
+	var contractCreation bool
+	if types.IsContractAddr(to) {
+		contractCreation = true
+	} else {
+		// Check if an address is stored by this address
+		addr := self.World().Config().Get("NameReg").Storage(to).Bytes()
+		if len(addr) > 0 {
+			hash = addr
+		} else {
+			hash = to
+		}
+	}
+
+	var tx *types.Transaction
+	if contractCreation {
+		tx = types.NewContractCreationTx(value.BigInt(), gas.BigInt(), price.BigInt(), data)
+	} else {
+		tx = types.NewTransactionMessage(hash, value.BigInt(), gas.BigInt(), price.BigInt(), data)
+	}
+
+	state := self.chainManager.TransState()
+	nonce := state.GetNonce(key.Address())
+
+	tx.SetNonce(nonce)
+	tx.Sign(key.PrivateKey)
+
+	// Do some pre processing for our "pre" events  and hooks
+	block := self.chainManager.NewBlock(key.Address())
+	coinbase := state.GetStateObject(key.Address())
+	coinbase.SetGasPool(block.GasLimit)
+	self.blockManager.ApplyTransactions(coinbase, state, block, types.Transactions{tx}, true)
+
+	err := self.obj.TxPool().Add(tx)
+	if err != nil {
+		return nil, err
+	}
+	state.SetNonce(key.Address(), nonce+1)
+
+	if contractCreation {
+		addr := core.AddressFromMessage(tx)
+		pipelogger.Infof("Contract addr %x\n", addr)
+	}
+
+	return tx, nil
+}
+
+func (self *XEth) PushTx(tx *types.Transaction) ([]byte, error) {
+	err := self.obj.TxPool().Add(tx)
+	if err != nil {
+		return nil, err
+	}
+
+	if tx.To() == nil {
+		addr := core.AddressFromMessage(tx)
+		pipelogger.Infof("Contract addr %x\n", addr)
+		return addr, nil
+	}
+	return tx.Hash(), nil
+}
+
+func (self *XEth) CompileMutan(code string) ([]byte, error) {
+	data, err := ethutil.Compile(code, false)
+	if err != nil {
+		return nil, err
+	}
+
+	return data, nil
+}
diff --git a/xeth/vm_env.go b/xeth/vm_env.go
new file mode 100644
index 000000000..7fb674a94
--- /dev/null
+++ b/xeth/vm_env.go
@@ -0,0 +1,65 @@
+package xeth
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/vm"
+)
+
+type VMEnv struct {
+	state  *state.StateDB
+	block  *types.Block
+	value  *big.Int
+	sender []byte
+
+	depth int
+}
+
+func NewEnv(state *state.StateDB, block *types.Block, value *big.Int, sender []byte) *VMEnv {
+	return &VMEnv{
+		state:  state,
+		block:  block,
+		value:  value,
+		sender: sender,
+	}
+}
+
+func (self *VMEnv) Origin() []byte        { return self.sender }
+func (self *VMEnv) BlockNumber() *big.Int { return self.block.Number }
+func (self *VMEnv) PrevHash() []byte      { return self.block.PrevHash }
+func (self *VMEnv) Coinbase() []byte      { return self.block.Coinbase }
+func (self *VMEnv) Time() int64           { return self.block.Time }
+func (self *VMEnv) Difficulty() *big.Int  { return self.block.Difficulty }
+func (self *VMEnv) BlockHash() []byte     { return self.block.Hash() }
+func (self *VMEnv) Value() *big.Int       { return self.value }
+func (self *VMEnv) State() *state.StateDB { return self.state }
+func (self *VMEnv) GasLimit() *big.Int    { return self.block.GasLimit }
+func (self *VMEnv) Depth() int            { return self.depth }
+func (self *VMEnv) SetDepth(i int)        { self.depth = i }
+func (self *VMEnv) AddLog(log state.Log) {
+	self.state.AddLog(log)
+}
+func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
+	return vm.Transfer(from, to, amount)
+}
+
+func (self *VMEnv) vm(addr, data []byte, gas, price, value *big.Int) *core.Execution {
+	return core.NewExecution(self, addr, data, gas, price, value)
+}
+
+func (self *VMEnv) Call(me vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(addr, data, gas, price, value)
+	return exe.Call(addr, me)
+}
+func (self *VMEnv) CallCode(me vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(me.Address(), data, gas, price, value)
+	return exe.Call(addr, me)
+}
+
+func (self *VMEnv) Create(me vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ClosureRef) {
+	exe := self.vm(addr, data, gas, price, value)
+	return exe.Create(me)
+}
diff --git a/xeth/world.go b/xeth/world.go
new file mode 100644
index 000000000..956ef1e15
--- /dev/null
+++ b/xeth/world.go
@@ -0,0 +1,64 @@
+package xeth
+
+import (
+	"container/list"
+
+	"github.com/ethereum/go-ethereum/state"
+)
+
+type World struct {
+	pipe *XEth
+	cfg  *Config
+}
+
+func NewWorld(pipe *XEth) *World {
+	world := &World{pipe, nil}
+	world.cfg = &Config{pipe}
+
+	return world
+}
+
+func (self *XEth) World() *World {
+	return self.world
+}
+
+func (self *World) State() *state.StateDB {
+	return self.pipe.chainManager.State()
+}
+
+func (self *World) Get(addr []byte) *Object {
+	return &Object{self.State().GetStateObject(addr)}
+}
+
+func (self *World) SafeGet(addr []byte) *Object {
+	return &Object{self.safeGet(addr)}
+}
+
+func (self *World) safeGet(addr []byte) *state.StateObject {
+	object := self.State().GetStateObject(addr)
+	if object == nil {
+		object = state.NewStateObject(addr)
+	}
+
+	return object
+}
+
+func (self *World) Coinbase() *state.StateObject {
+	return nil
+}
+
+func (self *World) IsMining() bool {
+	return self.pipe.obj.IsMining()
+}
+
+func (self *World) IsListening() bool {
+	return self.pipe.obj.IsListening()
+}
+
+func (self *World) Peers() *list.List {
+	return self.pipe.obj.Peers()
+}
+
+func (self *World) Config() *Config {
+	return self.cfg
+}