22 files changed, 2477 insertions, 0 deletions

diff --git a/mobile/accounts.go b/mobile/accounts.go
new file mode 100644
index 000000000..41498b6f0
--- /dev/null
+++ b/mobile/accounts.go
@@ -0,0 +1,181 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the accounts package to support client side key
+// management on mobile platforms.
+
+package geth
+
+import (
+	"errors"
+	"time"
+
+	"github.com/ethereum/go-ethereum/accounts"
+)
+
+const (
+	// StandardScryptN is the N parameter of Scrypt encryption algorithm, using 256MB
+	// memory and taking approximately 1s CPU time on a modern processor.
+	StandardScryptN = int(accounts.StandardScryptN)
+
+	// StandardScryptP is the P parameter of Scrypt encryption algorithm, using 256MB
+	// memory and taking approximately 1s CPU time on a modern processor.
+	StandardScryptP = int(accounts.StandardScryptP)
+
+	// LightScryptN is the N parameter of Scrypt encryption algorithm, using 4MB
+	// memory and taking approximately 100ms CPU time on a modern processor.
+	LightScryptN = int(accounts.LightScryptN)
+
+	// LightScryptP is the P parameter of Scrypt encryption algorithm, using 4MB
+	// memory and taking approximately 100ms CPU time on a modern processor.
+	LightScryptP = int(accounts.LightScryptP)
+)
+
+// Account represents a stored key.
+type Account struct{ account accounts.Account }
+
+// Accounts represents a slice of accounts.
+type Accounts struct{ accounts []accounts.Account }
+
+// Size returns the number of accounts in the slice.
+func (a *Accounts) Size() int {
+	return len(a.accounts)
+}
+
+// Get returns the account at the given index from the slice.
+func (a *Accounts) Get(index int) (*Account, error) {
+	if index < 0 || index >= len(a.accounts) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &Account{a.accounts[index]}, nil
+}
+
+// Set sets the account at the given index in the slice.
+func (a *Accounts) Set(index int, account *Account) error {
+	if index < 0 || index >= len(a.accounts) {
+		return errors.New("index out of bounds")
+	}
+	a.accounts[index] = account.account
+	return nil
+}
+
+// GetAddress retrieves the address associated with the account.
+func (a *Account) GetAddress() *Address {
+	return &Address{a.account.Address}
+}
+
+// GetFile retrieves the path of the file containing the account key.
+func (a *Account) GetFile() string {
+	return a.account.File
+}
+
+// AccountManager manages a key storage directory on disk.
+type AccountManager struct{ manager *accounts.Manager }
+
+// NewAccountManager creates a manager for the given directory.
+func NewAccountManager(keydir string, scryptN, scryptP int) *AccountManager {
+	return &AccountManager{manager: accounts.NewManager(keydir, scryptN, scryptP)}
+}
+
+// HasAddress reports whether a key with the given address is present.
+func (am *AccountManager) HasAddress(addr *Address) bool {
+	return am.manager.HasAddress(addr.address)
+}
+
+// GetAccounts returns all key files present in the directory.
+func (am *AccountManager) GetAccounts() *Accounts {
+	return &Accounts{am.manager.Accounts()}
+}
+
+// DeleteAccount deletes the key matched by account if the passphrase is correct.
+// If a contains no filename, the address must match a unique key.
+func (am *AccountManager) DeleteAccount(a *Account, passphrase string) error {
+	return am.manager.DeleteAccount(accounts.Account{
+		Address: a.account.Address,
+		File:    a.account.File,
+	}, passphrase)
+}
+
+// Sign signs hash with an unlocked private key matching the given address.
+func (am *AccountManager) Sign(addr *Address, hash []byte) ([]byte, error) {
+	return am.manager.Sign(addr.address, hash)
+}
+
+// SignWithPassphrase signs hash if the private key matching the given address can be
+// decrypted with the given passphrase.
+func (am *AccountManager) SignWithPassphrase(addr *Address, passphrase string, hash []byte) ([]byte, error) {
+	return am.manager.SignWithPassphrase(addr.address, passphrase, hash)
+}
+
+// Unlock unlocks the given account indefinitely.
+func (am *AccountManager) Unlock(a *Account, passphrase string) error {
+	return am.manager.TimedUnlock(a.account, passphrase, 0)
+}
+
+// Lock removes the private key with the given address from memory.
+func (am *AccountManager) Lock(addr *Address) error {
+	return am.manager.Lock(addr.address)
+}
+
+// TimedUnlock unlocks the given account with the passphrase. The account
+// stays unlocked for the duration of timeout. A timeout of 0 unlocks the account
+// until the program exits. The account must match a unique key file.
+//
+// If the account address is already unlocked for a duration, TimedUnlock extends or
+// shortens the active unlock timeout. If the address was previously unlocked
+// indefinitely the timeout is not altered.
+func (am *AccountManager) TimedUnlock(a *Account, passphrase string, timeout int64) error {
+	return am.manager.TimedUnlock(a.account, passphrase, time.Duration(timeout))
+}
+
+// NewAccount generates a new key and stores it into the key directory,
+// encrypting it with the passphrase.
+func (am *AccountManager) NewAccount(passphrase string) (*Account, error) {
+	account, err := am.manager.NewAccount(passphrase)
+	if err != nil {
+		return nil, err
+	}
+	return &Account{account}, nil
+}
+
+// ExportKey exports as a JSON key, encrypted with newPassphrase.
+func (am *AccountManager) ExportKey(a *Account, passphrase, newPassphrase string) ([]byte, error) {
+	return am.manager.Export(a.account, passphrase, newPassphrase)
+}
+
+// ImportKey stores the given encrypted JSON key into the key directory.
+func (am *AccountManager) ImportKey(keyJSON []byte, passphrase, newPassphrase string) (*Account, error) {
+	account, err := am.manager.Import(keyJSON, passphrase, newPassphrase)
+	if err != nil {
+		return nil, err
+	}
+	return &Account{account}, nil
+}
+
+// Update changes the passphrase of an existing account.
+func (am *AccountManager) Update(a *Account, passphrase, newPassphrase string) error {
+	return am.manager.Update(a.account, passphrase, newPassphrase)
+}
+
+// ImportPreSaleKey decrypts the given Ethereum presale wallet and stores
+// a key file in the key directory. The key file is encrypted with the same passphrase.
+func (am *AccountManager) ImportPreSaleKey(keyJSON []byte, passphrase string) (*Account, error) {
+	account, err := am.manager.ImportPreSaleKey(keyJSON, passphrase)
+	if err != nil {
+		return nil, err
+	}
+	return &Account{account}, nil
+}
diff --git a/mobile/android_test.go b/mobile/android_test.go
new file mode 100644
index 000000000..0a3fa93ae
--- /dev/null
+++ b/mobile/android_test.go
@@ -0,0 +1,203 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the accounts package to support client side key
+// management on mobile platforms.
+
+package geth
+
+import (
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"testing"
+	"time"
+
+	"github.com/ethereum/go-ethereum/internal/build"
+)
+
+// androidTestClass is a Java class to do some lightweight tests against the Android
+// bindings. The goal is not to test each individual functionality, rather just to
+// catch breaking API and/or implementation changes.
+const androidTestClass = `
+package go;
+
+import android.test.InstrumentationTestCase;
+import android.test.MoreAsserts;
+
+import org.ethereum.geth.*;
+
+public class AndroidTest extends InstrumentationTestCase {
+	public AndroidTest() {}
+
+	public void testAccountManagement() {
+		try {
+			AccountManager am = new AccountManager(getInstrumentation().getContext().getFilesDir() + "/keystore", Geth.LightScryptN, Geth.LightScryptP);
+
+			Account newAcc = am.newAccount("Creation password");
+			byte[] jsonAcc = am.exportKey(newAcc, "Creation password", "Export password");
+
+			am.deleteAccount(newAcc, "Creation password");
+			Account impAcc = am.importKey(jsonAcc, "Export password", "Import password");
+		} catch (Exception e) {
+			fail(e.toString());
+		}
+	}
+
+	public void testInprocNode() {
+		Context ctx = new Context();
+
+		try {
+			// Start up a new inprocess node
+			Node node = new Node(getInstrumentation().getContext().getFilesDir() + "/.ethereum", new NodeConfig());
+			node.start();
+
+			// Retrieve some data via function calls (we don't really care about the results)
+			NodeInfo info = node.getNodeInfo();
+			info.getName();
+			info.getListenerAddress();
+			info.getProtocols();
+
+			// Retrieve some data via the APIs (we don't really care about the results)
+			EthereumClient ec = node.getEthereumClient();
+			ec.getBlockByNumber(ctx, -1).getNumber();
+
+			NewHeadHandler handler = new NewHeadHandler() {
+				@Override public void onError(String error)          {}
+				@Override public void onNewHead(final Header header) {}
+			};
+			ec.subscribeNewHead(ctx, handler,  16);
+		} catch (Exception e) {
+			fail(e.toString());
+		}
+	}
+}
+`
+
+// TestAndroid runs the Android java test class specified above.
+//
+// This requires the gradle command in PATH and the Android SDK whose path is available
+// through ANDROID_HOME environment variable. To successfully run the tests, an Android
+// device must also be available with debugging enabled.
+//
+// This method has been adapted from golang.org/x/mobile/bind/java/seq_test.go/runTest
+func TestAndroid(t *testing.T) {
+	// Skip tests on Windows altogether
+	if runtime.GOOS == "windows" {
+		t.Skip("cannot test Android bindings on Windows, skipping")
+	}
+	// Make sure all the Android tools are installed
+	if _, err := exec.Command("which", "gradle").CombinedOutput(); err != nil {
+		t.Skip("command gradle not found, skipping")
+	}
+	if sdk := os.Getenv("ANDROID_HOME"); sdk == "" {
+		t.Skip("ANDROID_HOME environment var not set, skipping")
+	}
+	if _, err := exec.Command("which", "gomobile").CombinedOutput(); err != nil {
+		t.Log("gomobile missing, installing it...")
+		if _, err := exec.Command("go", "install", "golang.org/x/mobile/cmd/gomobile").CombinedOutput(); err != nil {
+			t.Fatalf("install failed: %v", err)
+		}
+		t.Log("initializing gomobile...")
+		start := time.Now()
+		if _, err := exec.Command("gomobile", "init").CombinedOutput(); err != nil {
+			t.Fatalf("initialization failed: %v", err)
+		}
+		t.Logf("initialization took %v", time.Since(start))
+	}
+	// Create and switch to a temporary workspace
+	workspace, err := ioutil.TempDir("", "geth-android-")
+	if err != nil {
+		t.Fatalf("failed to create temporary workspace: %v", err)
+	}
+	defer os.RemoveAll(workspace)
+
+	pwd, err := os.Getwd()
+	if err != nil {
+		t.Fatalf("failed to get current working directory: %v", err)
+	}
+	if err := os.Chdir(workspace); err != nil {
+		t.Fatalf("failed to switch to temporary workspace: %v", err)
+	}
+	defer os.Chdir(pwd)
+
+	// Create the skeleton of the Android project
+	for _, dir := range []string{"src/main", "src/androidTest/java/org/ethereum/gethtest", "libs"} {
+		err = os.MkdirAll(dir, os.ModePerm)
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+	// Generate the mobile bindings for Geth and add the tester class
+	gobind := exec.Command("gomobile", "bind", "-javapkg", "org.ethereum", "github.com/ethereum/go-ethereum/mobile")
+	if output, err := gobind.CombinedOutput(); err != nil {
+		t.Logf("%s", output)
+		t.Fatalf("failed to run gomobile bind: %v", err)
+	}
+	build.CopyFile(filepath.Join("libs", "geth.aar"), "geth.aar", os.ModePerm)
+
+	if err = ioutil.WriteFile(filepath.Join("src", "androidTest", "java", "org", "ethereum", "gethtest", "AndroidTest.java"), []byte(androidTestClass), os.ModePerm); err != nil {
+		t.Fatalf("failed to write Android test class: %v", err)
+	}
+	// Finish creating the project and run the tests via gradle
+	if err = ioutil.WriteFile(filepath.Join("src", "main", "AndroidManifest.xml"), []byte(androidManifest), os.ModePerm); err != nil {
+		t.Fatalf("failed to write Android manifest: %v", err)
+	}
+	if err = ioutil.WriteFile("build.gradle", []byte(gradleConfig), os.ModePerm); err != nil {
+		t.Fatalf("failed to write gradle build file: %v", err)
+	}
+	if output, err := exec.Command("gradle", "connectedAndroidTest").CombinedOutput(); err != nil {
+		t.Logf("%s", output)
+		t.Errorf("failed to run gradle test: %v", err)
+	}
+}
+
+const androidManifest = `<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="org.ethereum.gethtest"
+	  android:versionCode="1"
+	  android:versionName="1.0">
+
+		<uses-permission android:name="android.permission.INTERNET" />
+</manifest>`
+
+const gradleConfig = `buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:1.5.0'
+    }
+}
+allprojects {
+    repositories { jcenter() }
+}
+apply plugin: 'com.android.library'
+android {
+    compileSdkVersion 'android-19'
+    buildToolsVersion '21.1.2'
+    defaultConfig { minSdkVersion 15 }
+}
+repositories {
+    flatDir { dirs 'libs' }
+}
+dependencies {
+    compile 'com.android.support:appcompat-v7:19.0.0'
+    compile(name: "geth", ext: "aar")
+}
+`
diff --git a/mobile/big.go b/mobile/big.go
new file mode 100644
index 000000000..6a358ba28
--- /dev/null
+++ b/mobile/big.go
@@ -0,0 +1,95 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the math/big package.
+
+package geth
+
+import (
+	"errors"
+	"math/big"
+)
+
+// A BigInt represents a signed multi-precision integer.
+type BigInt struct {
+	bigint *big.Int
+}
+
+// NewBigInt allocates and returns a new BigInt set to x.
+func NewBigInt(x int64) *BigInt {
+	return &BigInt{big.NewInt(x)}
+}
+
+// GetBytes returns the absolute value of x as a big-endian byte slice.
+func (bi *BigInt) GetBytes() []byte {
+	return bi.bigint.Bytes()
+}
+
+// String returns the value of x as a formatted decimal string.
+func (bi *BigInt) String() string {
+	return bi.bigint.String()
+}
+
+// GetInt64 returns the int64 representation of x. If x cannot be represented in
+// an int64, the result is undefined.
+func (bi *BigInt) GetInt64() int64 {
+	return bi.bigint.Int64()
+}
+
+// SetBytes interprets buf as the bytes of a big-endian unsigned integer and sets
+// the big int to that value.
+func (bi *BigInt) SetBytes(buf []byte) {
+	bi.bigint.SetBytes(buf)
+}
+
+// SetInt64 sets the big int to x.
+func (bi *BigInt) SetInt64(x int64) {
+	bi.bigint.SetInt64(x)
+}
+
+// SetString sets the big int to x.
+//
+// The string prefix determines the actual conversion base. A prefix of "0x" or
+// "0X" selects base 16; the "0" prefix selects base 8, and a "0b" or "0B" prefix
+// selects base 2. Otherwise the selected base is 10.
+func (bi *BigInt) SetString(x string, base int) {
+	bi.bigint.SetString(x, base)
+}
+
+// BigInts represents a slice of big ints.
+type BigInts struct{ bigints []*big.Int }
+
+// Size returns the number of big ints in the slice.
+func (bi *BigInts) Size() int {
+	return len(bi.bigints)
+}
+
+// Get returns the bigint at the given index from the slice.
+func (bi *BigInts) Get(index int) (*BigInt, error) {
+	if index < 0 || index >= len(bi.bigints) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &BigInt{bi.bigints[index]}, nil
+}
+
+// Set sets the big int at the given index in the slice.
+func (bi *BigInts) Set(index int, bigint *BigInt) error {
+	if index < 0 || index >= len(bi.bigints) {
+		return errors.New("index out of bounds")
+	}
+	bi.bigints[index] = bigint.bigint
+	return nil
+}
diff --git a/mobile/big_go1.7.go b/mobile/big_go1.7.go
new file mode 100644
index 000000000..0447e1f66
--- /dev/null
+++ b/mobile/big_go1.7.go
@@ -0,0 +1,26 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains the wrappers from the math/big package that require Go 1.7 and above.
+
+// +build go1.7
+
+package geth
+
+// GetString returns the value of x as a formatted string in some number base.
+func (bi *BigInt) GetString(base int) string {
+	return bi.bigint.Text(base)
+}
diff --git a/mobile/bind.go b/mobile/bind.go
new file mode 100644
index 000000000..50adc6b0f
--- /dev/null
+++ b/mobile/bind.go
@@ -0,0 +1,202 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the bind package.
+
+package geth
+
+import (
+	"math/big"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+)
+
+// Signer is an interaface defining the callback when a contract requires a
+// method to sign the transaction before submission.
+type Signer interface {
+	Sign(*Address, *Transaction) (*Transaction, error)
+}
+
+type signer struct {
+	sign bind.SignerFn
+}
+
+func (s *signer) Sign(addr *Address, tx *Transaction) (*Transaction, error) {
+	sig, err := s.sign(types.HomesteadSigner{}, addr.address, tx.tx)
+	if err != nil {
+		return nil, err
+	}
+	return &Transaction{sig}, nil
+}
+
+// CallOpts is the collection of options to fine tune a contract call request.
+type CallOpts struct {
+	opts bind.CallOpts
+}
+
+// NewCallOpts creates a new option set for contract calls.
+func NewCallOpts() *CallOpts {
+	return new(CallOpts)
+}
+
+func (opts *CallOpts) IsPending() bool    { return opts.opts.Pending }
+func (opts *CallOpts) GetGasLimit() int64 { return 0 /* TODO(karalabe) */ }
+
+// GetContext cannot be reliably implemented without identity preservation (https://github.com/golang/go/issues/16876)
+// Even then it's awkward to unpack the subtleties of a Go context out to Java.
+// func (opts *CallOpts) GetContext() *Context { return &Context{opts.opts.Context} }
+
+func (opts *CallOpts) SetPending(pending bool)     { opts.opts.Pending = pending }
+func (opts *CallOpts) SetGasLimit(limit int64)     { /* TODO(karalabe) */ }
+func (opts *CallOpts) SetContext(context *Context) { opts.opts.Context = context.context }
+
+// TransactOpts is the collection of authorization data required to create a
+// valid Ethereum transaction.
+type TransactOpts struct {
+	opts bind.TransactOpts
+}
+
+func (opts *TransactOpts) GetFrom() *Address    { return &Address{opts.opts.From} }
+func (opts *TransactOpts) GetNonce() int64      { return opts.opts.Nonce.Int64() }
+func (opts *TransactOpts) GetValue() *BigInt    { return &BigInt{opts.opts.Value} }
+func (opts *TransactOpts) GetGasPrice() *BigInt { return &BigInt{opts.opts.GasPrice} }
+func (opts *TransactOpts) GetGasLimit() int64   { return opts.opts.GasLimit.Int64() }
+
+// GetSigner cannot be reliably implemented without identity preservation (https://github.com/golang/go/issues/16876)
+// func (opts *TransactOpts) GetSigner() Signer { return &signer{opts.opts.Signer} }
+
+// GetContext cannot be reliably implemented without identity preservation (https://github.com/golang/go/issues/16876)
+// Even then it's awkward to unpack the subtleties of a Go context out to Java.
+//func (opts *TransactOpts) GetContext() *Context { return &Context{opts.opts.Context} }
+
+func (opts *TransactOpts) SetFrom(from *Address) { opts.opts.From = from.address }
+func (opts *TransactOpts) SetNonce(nonce int64)  { opts.opts.Nonce = big.NewInt(nonce) }
+func (opts *TransactOpts) SetSigner(s Signer) {
+	opts.opts.Signer = func(signer types.Signer, addr common.Address, tx *types.Transaction) (*types.Transaction, error) {
+		sig, err := s.Sign(&Address{addr}, &Transaction{tx})
+		if err != nil {
+			return nil, err
+		}
+		return sig.tx, nil
+	}
+}
+func (opts *TransactOpts) SetValue(value *BigInt)      { opts.opts.Value = value.bigint }
+func (opts *TransactOpts) SetGasPrice(price *BigInt)   { opts.opts.GasPrice = price.bigint }
+func (opts *TransactOpts) SetGasLimit(limit int64)     { opts.opts.GasLimit = big.NewInt(limit) }
+func (opts *TransactOpts) SetContext(context *Context) { opts.opts.Context = context.context }
+
+// BoundContract is the base wrapper object that reflects a contract on the
+// Ethereum network. It contains a collection of methods that are used by the
+// higher level contract bindings to operate.
+type BoundContract struct {
+	contract *bind.BoundContract
+	address  common.Address
+	deployer *types.Transaction
+}
+
+// DeployContract deploys a contract onto the Ethereum blockchain and binds the
+// deployment address with a wrapper.
+func DeployContract(opts *TransactOpts, abiJSON string, bytecode []byte, client *EthereumClient, args *Interfaces) (*BoundContract, error) {
+	// Convert all the deployment parameters to Go types
+	params := make([]interface{}, len(args.objects))
+	for i, obj := range args.objects {
+		params[i] = obj
+	}
+	// Deploy the contract to the network
+	parsed, err := abi.JSON(strings.NewReader(abiJSON))
+	if err != nil {
+		return nil, err
+	}
+	addr, tx, bound, err := bind.DeployContract(&opts.opts, parsed, bytecode, client.client, params...)
+	if err != nil {
+		return nil, err
+	}
+	return &BoundContract{
+		contract: bound,
+		address:  addr,
+		deployer: tx,
+	}, nil
+}
+
+// BindContract creates a low level contract interface through which calls and
+// transactions may be made through.
+func BindContract(address *Address, abiJSON string, client *EthereumClient) (*BoundContract, error) {
+	parsed, err := abi.JSON(strings.NewReader(abiJSON))
+	if err != nil {
+		return nil, err
+	}
+	return &BoundContract{
+		contract: bind.NewBoundContract(address.address, parsed, client.client, client.client),
+		address:  address.address,
+	}, nil
+}
+
+func (c *BoundContract) GetAddress() *Address { return &Address{c.address} }
+func (c *BoundContract) GetDeployer() *Transaction {
+	if c.deployer == nil {
+		return nil
+	}
+	return &Transaction{c.deployer}
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result.
+func (c *BoundContract) Call(opts *CallOpts, out *Interfaces, method string, args *Interfaces) error {
+	// Convert all the input and output parameters to Go types
+	params := make([]interface{}, len(args.objects))
+	for i, obj := range args.objects {
+		params[i] = obj
+	}
+	results := make([]interface{}, len(out.objects))
+	for i, obj := range out.objects {
+		results[i] = obj
+	}
+	// Execute the call to the contract and wrap any results
+	if err := c.contract.Call(&opts.opts, &results, method, params...); err != nil {
+		return err
+	}
+	for i, res := range results {
+		out.objects[i] = res
+	}
+	return nil
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (c *BoundContract) Transact(opts *TransactOpts, method string, args *Interfaces) (*Transaction, error) {
+	params := make([]interface{}, len(args.objects))
+	for i, obj := range args.objects {
+		params[i] = obj
+	}
+	tx, err := c.contract.Transact(&opts.opts, method, params)
+	if err != nil {
+		return nil, err
+	}
+	return &Transaction{tx}, nil
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (c *BoundContract) Transfer(opts *TransactOpts) (*Transaction, error) {
+	tx, err := c.contract.Transfer(&opts.opts)
+	if err != nil {
+		return nil, err
+	}
+	return &Transaction{tx}, nil
+}
diff --git a/mobile/common.go b/mobile/common.go
new file mode 100644
index 000000000..ab1810bf1
--- /dev/null
+++ b/mobile/common.go
@@ -0,0 +1,187 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the common package.
+
+package geth
+
+import (
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/common"
+)
+
+// Hash represents the 32 byte Keccak256 hash of arbitrary data.
+type Hash struct {
+	hash common.Hash
+}
+
+// NewHashFromBytes converts a slice of bytes to a hash value.
+func NewHashFromBytes(hash []byte) (*Hash, error) {
+	h := new(Hash)
+	if err := h.SetBytes(hash); err != nil {
+		return nil, err
+	}
+	return h, nil
+}
+
+// NewHashFromHex converts a hex string to a hash value.
+func NewHashFromHex(hash string) (*Hash, error) {
+	h := new(Hash)
+	if err := h.SetHex(hash); err != nil {
+		return nil, err
+	}
+	return h, nil
+}
+
+// SetBytes sets the specified slice of bytes as the hash value.
+func (h *Hash) SetBytes(hash []byte) error {
+	if length := len(hash); length != common.HashLength {
+		return fmt.Errorf("invalid hash length: %v != %v", length, common.HashLength)
+	}
+	copy(h.hash[:], hash)
+	return nil
+}
+
+// GetBytes retrieves the byte representation of the hash.
+func (h *Hash) GetBytes() []byte {
+	return h.hash[:]
+}
+
+// SetHex sets the specified hex string as the hash value.
+func (h *Hash) SetHex(hash string) error {
+	hash = strings.ToLower(hash)
+	if len(hash) >= 2 && hash[:2] == "0x" {
+		hash = hash[2:]
+	}
+	if length := len(hash); length != 2*common.HashLength {
+		return fmt.Errorf("invalid hash hex length: %v != %v", length, 2*common.HashLength)
+	}
+	bin, err := hex.DecodeString(hash)
+	if err != nil {
+		return err
+	}
+	copy(h.hash[:], bin)
+	return nil
+}
+
+// GetHex retrieves the hex string representation of the hash.
+func (h *Hash) GetHex() string {
+	return h.hash.Hex()
+}
+
+// Hashes represents a slice of hashes.
+type Hashes struct{ hashes []common.Hash }
+
+// Size returns the number of hashes in the slice.
+func (h *Hashes) Size() int {
+	return len(h.hashes)
+}
+
+// Get returns the hash at the given index from the slice.
+func (h *Hashes) Get(index int) (*Hash, error) {
+	if index < 0 || index >= len(h.hashes) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &Hash{h.hashes[index]}, nil
+}
+
+// Address represents the 20 byte address of an Ethereum account.
+type Address struct {
+	address common.Address
+}
+
+// NewAddressFromBytes converts a slice of bytes to a hash value.
+func NewAddressFromBytes(address []byte) (*Address, error) {
+	a := new(Address)
+	if err := a.SetBytes(address); err != nil {
+		return nil, err
+	}
+	return a, nil
+}
+
+// NewAddressFromHex converts a hex string to a address value.
+func NewAddressFromHex(address string) (*Address, error) {
+	a := new(Address)
+	if err := a.SetHex(address); err != nil {
+		return nil, err
+	}
+	return a, nil
+}
+
+// SetBytes sets the specified slice of bytes as the address value.
+func (a *Address) SetBytes(address []byte) error {
+	if length := len(address); length != common.AddressLength {
+		return fmt.Errorf("invalid address length: %v != %v", length, common.AddressLength)
+	}
+	copy(a.address[:], address)
+	return nil
+}
+
+// GetBytes retrieves the byte representation of the address.
+func (a *Address) GetBytes() []byte {
+	return a.address[:]
+}
+
+// SetHex sets the specified hex string as the address value.
+func (a *Address) SetHex(address string) error {
+	address = strings.ToLower(address)
+	if len(address) >= 2 && address[:2] == "0x" {
+		address = address[2:]
+	}
+	if length := len(address); length != 2*common.AddressLength {
+		return fmt.Errorf("invalid address hex length: %v != %v", length, 2*common.AddressLength)
+	}
+	bin, err := hex.DecodeString(address)
+	if err != nil {
+		return err
+	}
+	copy(a.address[:], bin)
+	return nil
+}
+
+// GetHex retrieves the hex string representation of the address.
+func (a *Address) GetHex() string {
+	return a.address.Hex()
+}
+
+// Addresses represents a slice of addresses.
+type Addresses struct{ addresses []common.Address }
+
+// Size returns the number of addresses in the slice.
+func (a *Addresses) Size() int {
+	return len(a.addresses)
+}
+
+// Get returns the address at the given index from the slice.
+func (a *Addresses) Get(index int) (*Address, error) {
+	if index < 0 || index >= len(a.addresses) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &Address{a.addresses[index]}, nil
+}
+
+// Set sets the address at the given index in the slice.
+func (a *Addresses) Set(index int, address *Address) error {
+	if index < 0 || index >= len(a.addresses) {
+		return errors.New("index out of bounds")
+	}
+	a.addresses[index] = address.address
+	return nil
+}
diff --git a/mobile/context.go b/mobile/context.go
new file mode 100644
index 000000000..9df94b689
--- /dev/null
+++ b/mobile/context.go
@@ -0,0 +1,81 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the golang.org/x/net/context package to support
+// client side context management on mobile platforms.
+
+package geth
+
+import (
+	"time"
+
+	"golang.org/x/net/context"
+)
+
+// Context carries a deadline, a cancelation signal, and other values across API
+// boundaries.
+type Context struct {
+	context context.Context
+	cancel  context.CancelFunc
+}
+
+// NewContext returns a non-nil, empty Context. It is never canceled, has no
+// values, and has no deadline. It is typically used by the main function,
+// initialization, and tests, and as the top-level Context for incoming requests.
+func NewContext() *Context {
+	return &Context{
+		context: context.Background(),
+	}
+}
+
+// WithCancel returns a copy of the original context with cancellation mechanism
+// included.
+//
+// Canceling this context releases resources associated with it, so code should
+// call cancel as soon as the operations running in this Context complete.
+func (c *Context) WithCancel() *Context {
+	child, cancel := context.WithCancel(c.context)
+	return &Context{
+		context: child,
+		cancel:  cancel,
+	}
+}
+
+// WithDeadline returns a copy of the original context with the deadline adjusted
+// to be no later than the specified time.
+//
+// Canceling this context releases resources associated with it, so code should
+// call cancel as soon as the operations running in this Context complete.
+func (c *Context) WithDeadline(sec int64, nsec int64) *Context {
+	child, cancel := context.WithDeadline(c.context, time.Unix(sec, nsec))
+	return &Context{
+		context: child,
+		cancel:  cancel,
+	}
+}
+
+// WithTimeout returns a copy of the original context with the deadline adjusted
+// to be no later than now + the duration specified.
+//
+// Canceling this context releases resources associated with it, so code should
+// call cancel as soon as the operations running in this Context complete.
+func (c *Context) WithTimeout(nsec int64) *Context {
+	child, cancel := context.WithTimeout(c.context, time.Duration(nsec))
+	return &Context{
+		context: child,
+		cancel:  cancel,
+	}
+}
diff --git a/mobile/discover.go b/mobile/discover.go
new file mode 100644
index 000000000..9df2d04c3
--- /dev/null
+++ b/mobile/discover.go
@@ -0,0 +1,104 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the accounts package to support client side enode
+// management on mobile platforms.
+
+package geth
+
+import (
+	"errors"
+
+	"github.com/ethereum/go-ethereum/p2p/discv5"
+)
+
+// Enode represents a host on the network.
+type Enode struct {
+	node *discv5.Node
+}
+
+// NewEnode parses a node designator.
+//
+// There are two basic forms of node designators
+//   - incomplete nodes, which only have the public key (node ID)
+//   - complete nodes, which contain the public key and IP/Port information
+//
+// For incomplete nodes, the designator must look like one of these
+//
+//    enode://<hex node id>
+//    <hex node id>
+//
+// For complete nodes, the node ID is encoded in the username portion
+// of the URL, separated from the host by an @ sign. The hostname can
+// only be given as an IP address, DNS domain names are not allowed.
+// The port in the host name section is the TCP listening port. If the
+// TCP and UDP (discovery) ports differ, the UDP port is specified as
+// query parameter "discport".
+//
+// In the following example, the node URL describes
+// a node with IP address 10.3.58.6, TCP listening port 30303
+// and UDP discovery port 30301.
+//
+//    enode://<hex node id>@10.3.58.6:30303?discport=30301
+func NewEnode(rawurl string) (*Enode, error) {
+	node, err := discv5.ParseNode(rawurl)
+	if err != nil {
+		return nil, err
+	}
+	return &Enode{node}, nil
+}
+
+// Enodes represents a slice of accounts.
+type Enodes struct{ nodes []*discv5.Node }
+
+// NewEnodes creates a slice of uninitialized enodes.
+func NewEnodes(size int) *Enodes {
+	return &Enodes{
+		nodes: make([]*discv5.Node, size),
+	}
+}
+
+// NewEnodesEmpty creates an empty slice of Enode values.
+func NewEnodesEmpty() *Enodes {
+	return NewEnodes(0)
+}
+
+// Size returns the number of enodes in the slice.
+func (e *Enodes) Size() int {
+	return len(e.nodes)
+}
+
+// Get returns the enode at the given index from the slice.
+func (e *Enodes) Get(index int) (*Enode, error) {
+	if index < 0 || index >= len(e.nodes) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &Enode{e.nodes[index]}, nil
+}
+
+// Set sets the enode at the given index in the slice.
+func (e *Enodes) Set(index int, enode *Enode) error {
+	if index < 0 || index >= len(e.nodes) {
+		return errors.New("index out of bounds")
+	}
+	e.nodes[index] = enode.node
+	return nil
+}
+
+// Append adds a new enode element to the end of the slice.
+func (e *Enodes) Append(enode *Enode) {
+	e.nodes = append(e.nodes, enode.node)
+}
diff --git a/mobile/doc.go b/mobile/doc.go
new file mode 100644
index 000000000..50cc7f4f8
--- /dev/null
+++ b/mobile/doc.go
@@ -0,0 +1,57 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Package geth contains the simplified mobile APIs to go-ethereum.
+//
+// The scope of this package is *not* to allow writing a custom Ethereun client
+// with pieces plucked from go-ethereum, rather to allow writing native dapps on
+// mobile platforms. Keep this in mind when using or extending this package!
+//
+// API limitations
+//
+// Since gomobile cannot bridge arbitrary types between Go and Android/iOS, the
+// exposed APIs need to be manually wrapped into simplified types, with custom
+// constructors and getters/setters to ensure that they can be meaninfully used
+// from Java/ObjC too.
+//
+// With this in mind, please try to limit the scope of this package and only add
+// essentials without which mobile support cannot work, especially since manually
+// syncing the code will be unwieldy otherwise. In the long term we might consider
+// writing custom library generators, but those are out of scope now.
+//
+// Content wise each file in this package corresponds to an entire Go package
+// from the go-ethereum repository. Please adhere to this scoping to prevent this
+// package getting unmaintainable.
+//
+// Wrapping guidelines:
+//
+// Every type that is to be exposed should be wrapped into its own plain struct,
+// which internally contains a single field: the original go-ethereum version.
+// This is needed because gomobile cannot expose named types for now.
+//
+// Whenever a method argument or a return type is a custom struct, the pointer
+// variant should always be used as value types crossing over between language
+// boundaries might have strange behaviors.
+//
+// Slices of types should be converted into a single multiplicative type wrapping
+// a go slice with the methods `Size`, `Get` and `Set`. Further slice operations
+// should not be provided to limit the remote code complexity. Arrays should be
+// avoided as much as possible since they complicate bounds checking.
+//
+// Note, a panic *cannot* cross over language boundaries, instead will result in
+// an undebuggable SEGFAULT in the process. For error handling only ever use error
+// returns, which may be the only or the second return.
+package geth
diff --git a/mobile/ethclient.go b/mobile/ethclient.go
new file mode 100644
index 000000000..668d65e32
--- /dev/null
+++ b/mobile/ethclient.go
@@ -0,0 +1,305 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains a wrapper for the Ethereum client.
+
+package geth
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/ethclient"
+)
+
+// EthereumClient provides access to the Ethereum APIs.
+type EthereumClient struct {
+	client *ethclient.Client
+}
+
+// NewEthereumClient connects a client to the given URL.
+func NewEthereumClient(rawurl string) (*EthereumClient, error) {
+	client, err := ethclient.Dial(rawurl)
+	return &EthereumClient{client}, err
+}
+
+// GetBlockByHash returns the given full block.
+func (ec *EthereumClient) GetBlockByHash(ctx *Context, hash *Hash) (*Block, error) {
+	block, err := ec.client.BlockByHash(ctx.context, hash.hash)
+	return &Block{block}, err
+}
+
+// GetBlockByNumber returns a block from the current canonical chain. If number is <0, the
+// latest known block is returned.
+func (ec *EthereumClient) GetBlockByNumber(ctx *Context, number int64) (*Block, error) {
+	if number < 0 {
+		block, err := ec.client.BlockByNumber(ctx.context, nil)
+		return &Block{block}, err
+	}
+	block, err := ec.client.BlockByNumber(ctx.context, big.NewInt(number))
+	return &Block{block}, err
+}
+
+// GetHeaderByHash returns the block header with the given hash.
+func (ec *EthereumClient) GetHeaderByHash(ctx *Context, hash *Hash) (*Header, error) {
+	header, err := ec.client.HeaderByHash(ctx.context, hash.hash)
+	return &Header{header}, err
+}
+
+// GetHeaderByNumber returns a block header from the current canonical chain. If number is <0,
+// the latest known header is returned.
+func (ec *EthereumClient) GetHeaderByNumber(ctx *Context, number int64) (*Header, error) {
+	if number < 0 {
+		header, err := ec.client.HeaderByNumber(ctx.context, nil)
+		return &Header{header}, err
+	}
+	header, err := ec.client.HeaderByNumber(ctx.context, big.NewInt(number))
+	return &Header{header}, err
+}
+
+// GetTransactionByHash returns the transaction with the given hash.
+func (ec *EthereumClient) GetTransactionByHash(ctx *Context, hash *Hash) (*Transaction, error) {
+	tx, err := ec.client.TransactionByHash(ctx.context, hash.hash)
+	return &Transaction{tx}, err
+}
+
+// GetTransactionCount returns the total number of transactions in the given block.
+func (ec *EthereumClient) GetTransactionCount(ctx *Context, hash *Hash) (int, error) {
+	count, err := ec.client.TransactionCount(ctx.context, hash.hash)
+	return int(count), err
+}
+
+// GetTransactionInBlock returns a single transaction at index in the given block.
+func (ec *EthereumClient) GetTransactionInBlock(ctx *Context, hash *Hash, index int) (*Transaction, error) {
+	tx, err := ec.client.TransactionInBlock(ctx.context, hash.hash, uint(index))
+	return &Transaction{tx}, err
+
+}
+
+// GetTransactionReceipt returns the receipt of a transaction by transaction hash.
+// Note that the receipt is not available for pending transactions.
+func (ec *EthereumClient) GetTransactionReceipt(ctx *Context, hash *Hash) (*Receipt, error) {
+	receipt, err := ec.client.TransactionReceipt(ctx.context, hash.hash)
+	return &Receipt{receipt}, err
+}
+
+// SyncProgress retrieves the current progress of the sync algorithm. If there's
+// no sync currently running, it returns nil.
+func (ec *EthereumClient) SyncProgress(ctx *Context) (*SyncProgress, error) {
+	progress, err := ec.client.SyncProgress(ctx.context)
+	if progress == nil {
+		return nil, err
+	}
+	return &SyncProgress{*progress}, err
+}
+
+// NewHeadHandler is a client-side subscription callback to invoke on events and
+// subscription failure.
+type NewHeadHandler interface {
+	OnNewHead(header *Header)
+	OnError(failure string)
+}
+
+// SubscribeNewHead subscribes to notifications about the current blockchain head
+// on the given channel.
+func (ec *EthereumClient) SubscribeNewHead(ctx *Context, handler NewHeadHandler, buffer int) (*Subscription, error) {
+	// Subscribe to the event internally
+	ch := make(chan *types.Header, buffer)
+	sub, err := ec.client.SubscribeNewHead(ctx.context, ch)
+	if err != nil {
+		return nil, err
+	}
+	// Start up a dispatcher to feed into the callback
+	go func() {
+		for {
+			select {
+			case header := <-ch:
+				handler.OnNewHead(&Header{header})
+
+			case err := <-sub.Err():
+				handler.OnError(err.Error())
+				return
+			}
+		}
+	}()
+	return &Subscription{sub}, nil
+}
+
+// State Access
+
+// GetBalanceAt returns the wei balance of the given account.
+// The block number can be <0, in which case the balance is taken from the latest known block.
+func (ec *EthereumClient) GetBalanceAt(ctx *Context, account *Address, number int64) (*BigInt, error) {
+	if number < 0 {
+		balance, err := ec.client.BalanceAt(ctx.context, account.address, nil)
+		return &BigInt{balance}, err
+	}
+	balance, err := ec.client.BalanceAt(ctx.context, account.address, big.NewInt(number))
+	return &BigInt{balance}, err
+}
+
+// GetStorageAt returns the value of key in the contract storage of the given account.
+// The block number can be <0, in which case the value is taken from the latest known block.
+func (ec *EthereumClient) GetStorageAt(ctx *Context, account *Address, key *Hash, number int64) ([]byte, error) {
+	if number < 0 {
+		return ec.client.StorageAt(ctx.context, account.address, key.hash, nil)
+	}
+	return ec.client.StorageAt(ctx.context, account.address, key.hash, big.NewInt(number))
+}
+
+// GetCodeAt returns the contract code of the given account.
+// The block number can be <0, in which case the code is taken from the latest known block.
+func (ec *EthereumClient) GetCodeAt(ctx *Context, account *Address, number int64) ([]byte, error) {
+	if number < 0 {
+		return ec.client.CodeAt(ctx.context, account.address, nil)
+	}
+	return ec.client.CodeAt(ctx.context, account.address, big.NewInt(number))
+}
+
+// GetNonceAt returns the account nonce of the given account.
+// The block number can be <0, in which case the nonce is taken from the latest known block.
+func (ec *EthereumClient) GetNonceAt(ctx *Context, account *Address, number int64) (int64, error) {
+	if number < 0 {
+		nonce, err := ec.client.NonceAt(ctx.context, account.address, nil)
+		return int64(nonce), err
+	}
+	nonce, err := ec.client.NonceAt(ctx.context, account.address, big.NewInt(number))
+	return int64(nonce), err
+}
+
+// Filters
+
+// FilterLogs executes a filter query.
+func (ec *EthereumClient) FilterLogs(ctx *Context, query *FilterQuery) (*Logs, error) {
+	logs, err := ec.client.FilterLogs(ctx.context, query.query)
+	if err != nil {
+		return nil, err
+	}
+	// Temp hack due to vm.Logs being []*vm.Log
+	res := make(vm.Logs, len(logs))
+	for i, log := range logs {
+		res[i] = &log
+	}
+	return &Logs{res}, nil
+}
+
+// FilterLogsHandler is a client-side subscription callback to invoke on events and
+// subscription failure.
+type FilterLogsHandler interface {
+	OnFilterLogs(log *Log)
+	OnError(failure string)
+}
+
+// SubscribeFilterLogs subscribes to the results of a streaming filter query.
+func (ec *EthereumClient) SubscribeFilterLogs(ctx *Context, query *FilterQuery, handler FilterLogsHandler, buffer int) (*Subscription, error) {
+	// Subscribe to the event internally
+	ch := make(chan vm.Log, buffer)
+	sub, err := ec.client.SubscribeFilterLogs(ctx.context, query.query, ch)
+	if err != nil {
+		return nil, err
+	}
+	// Start up a dispatcher to feed into the callback
+	go func() {
+		for {
+			select {
+			case log := <-ch:
+				handler.OnFilterLogs(&Log{&log})
+
+			case err := <-sub.Err():
+				handler.OnError(err.Error())
+				return
+			}
+		}
+	}()
+	return &Subscription{sub}, nil
+}
+
+// Pending State
+
+// GetPendingBalanceAt returns the wei balance of the given account in the pending state.
+func (ec *EthereumClient) GetPendingBalanceAt(ctx *Context, account *Address) (*BigInt, error) {
+	balance, err := ec.client.PendingBalanceAt(ctx.context, account.address)
+	return &BigInt{balance}, err
+}
+
+// GetPendingStorageAt returns the value of key in the contract storage of the given account in the pending state.
+func (ec *EthereumClient) GetPendingStorageAt(ctx *Context, account *Address, key *Hash) ([]byte, error) {
+	return ec.client.PendingStorageAt(ctx.context, account.address, key.hash)
+}
+
+// GetPendingCodeAt returns the contract code of the given account in the pending state.
+func (ec *EthereumClient) GetPendingCodeAt(ctx *Context, account *Address) ([]byte, error) {
+	return ec.client.PendingCodeAt(ctx.context, account.address)
+}
+
+// GetPendingNonceAt returns the account nonce of the given account in the pending state.
+// This is the nonce that should be used for the next transaction.
+func (ec *EthereumClient) GetPendingNonceAt(ctx *Context, account *Address) (int64, error) {
+	nonce, err := ec.client.PendingNonceAt(ctx.context, account.address)
+	return int64(nonce), err
+}
+
+// GetPendingTransactionCount returns the total number of transactions in the pending state.
+func (ec *EthereumClient) GetPendingTransactionCount(ctx *Context) (int, error) {
+	count, err := ec.client.PendingTransactionCount(ctx.context)
+	return int(count), err
+}
+
+// Contract Calling
+
+// CallContract executes a message call transaction, which is directly executed in the VM
+// of the node, but never mined into the blockchain.
+//
+// blockNumber selects the block height at which the call runs. It can be <0, in which
+// case the code is taken from the latest known block. Note that state from very old
+// blocks might not be available.
+func (ec *EthereumClient) CallContract(ctx *Context, msg *CallMsg, number int64) ([]byte, error) {
+	if number < 0 {
+		return ec.client.CallContract(ctx.context, msg.msg, nil)
+	}
+	return ec.client.CallContract(ctx.context, msg.msg, big.NewInt(number))
+}
+
+// PendingCallContract executes a message call transaction using the EVM.
+// The state seen by the contract call is the pending state.
+func (ec *EthereumClient) PendingCallContract(ctx *Context, msg *CallMsg) ([]byte, error) {
+	return ec.client.PendingCallContract(ctx.context, msg.msg)
+}
+
+// SuggestGasPrice retrieves the currently suggested gas price to allow a timely
+// execution of a transaction.
+func (ec *EthereumClient) SuggestGasPrice(ctx *Context) (*BigInt, error) {
+	price, err := ec.client.SuggestGasPrice(ctx.context)
+	return &BigInt{price}, err
+}
+
+// EstimateGas tries to estimate the gas needed to execute a specific transaction based on
+// the current pending state of the backend blockchain. There is no guarantee that this is
+// the true gas limit requirement as other transactions may be added or removed by miners,
+// but it should provide a basis for setting a reasonable default.
+func (ec *EthereumClient) EstimateGas(ctx *Context, msg *CallMsg) (*BigInt, error) {
+	price, err := ec.client.EstimateGas(ctx.context, msg.msg)
+	return &BigInt{price}, err
+}
+
+// SendTransaction injects a signed transaction into the pending pool for execution.
+//
+// If the transaction was a contract creation use the TransactionReceipt method to get the
+// contract address after the transaction has been mined.
+func (ec *EthereumClient) SendTransaction(ctx *Context, tx *Transaction) error {
+	return ec.client.SendTransaction(ctx.context, tx.tx)
+}
diff --git a/mobile/ethereum.go b/mobile/ethereum.go
new file mode 100644
index 000000000..6e8046ac9
--- /dev/null
+++ b/mobile/ethereum.go
@@ -0,0 +1,125 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the go-ethereum root package.
+
+package geth
+
+import (
+	"errors"
+	"math/big"
+
+	ethereum "github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/common"
+)
+
+// Subscription represents an event subscription where events are
+// delivered on a data channel.
+type Subscription struct {
+	sub ethereum.Subscription
+}
+
+// Unsubscribe cancels the sending of events to the data channel
+// and closes the error channel.
+func (s *Subscription) Unsubscribe() {
+	s.sub.Unsubscribe()
+}
+
+// CallMsg contains parameters for contract calls.
+type CallMsg struct {
+	msg ethereum.CallMsg
+}
+
+// NewCallMsg creates an empty contract call parameter list.
+func NewCallMsg() *CallMsg {
+	return new(CallMsg)
+}
+
+func (msg *CallMsg) GetFrom() *Address    { return &Address{msg.msg.From} }
+func (msg *CallMsg) GetGas() int64        { return msg.msg.Gas.Int64() }
+func (msg *CallMsg) GetGasPrice() *BigInt { return &BigInt{msg.msg.GasPrice} }
+func (msg *CallMsg) GetValue() *BigInt    { return &BigInt{msg.msg.Value} }
+func (msg *CallMsg) GetData() []byte      { return msg.msg.Data }
+func (msg *CallMsg) GetTo() *Address {
+	if to := msg.msg.To; to != nil {
+		return &Address{*msg.msg.To}
+	}
+	return nil
+}
+
+func (msg *CallMsg) SetFrom(address *Address)  { msg.msg.From = address.address }
+func (msg *CallMsg) SetGas(gas int64)          { msg.msg.Gas = big.NewInt(gas) }
+func (msg *CallMsg) SetGasPrice(price *BigInt) { msg.msg.GasPrice = price.bigint }
+func (msg *CallMsg) SetValue(value *BigInt)    { msg.msg.Value = value.bigint }
+func (msg *CallMsg) SetData(data []byte)       { msg.msg.Data = data }
+func (msg *CallMsg) SetTo(address *Address) {
+	if address == nil {
+		msg.msg.To = nil
+	}
+	msg.msg.To = &address.address
+}
+
+// SyncProgress gives progress indications when the node is synchronising with
+// the Ethereum network.
+type SyncProgress struct {
+	progress ethereum.SyncProgress
+}
+
+func (p *SyncProgress) GetStartingBlock() int64 { return int64(p.progress.StartingBlock) }
+func (p *SyncProgress) GetCurrentBlock() int64  { return int64(p.progress.CurrentBlock) }
+func (p *SyncProgress) GetHighestBlock() int64  { return int64(p.progress.HighestBlock) }
+func (p *SyncProgress) GetPulledStates() int64  { return int64(p.progress.PulledStates) }
+func (p *SyncProgress) GetKnownStates() int64   { return int64(p.progress.KnownStates) }
+
+// Topics is a set of topic lists to filter events with.
+type Topics struct{ topics [][]common.Hash }
+
+// Size returns the number of topic lists inside the set
+func (t *Topics) Size() int {
+	return len(t.topics)
+}
+
+// Get returns the topic list at the given index from the slice.
+func (t *Topics) Get(index int) (*Hashes, error) {
+	if index < 0 || index >= len(t.topics) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &Hashes{t.topics[index]}, nil
+}
+
+// Set sets the topic list at the given index in the slice.
+func (t *Topics) Set(index int, topics *Hashes) error {
+	if index < 0 || index >= len(t.topics) {
+		return errors.New("index out of bounds")
+	}
+	t.topics[index] = topics.hashes
+	return nil
+}
+
+// FilterQuery contains options for contact log filtering.
+type FilterQuery struct {
+	query ethereum.FilterQuery
+}
+
+// NewFilterQuery creates an empty filter query for contact log filtering.
+func NewFilterQuery() *FilterQuery {
+	return new(FilterQuery)
+}
+
+func (fq *FilterQuery) GetFromBlock() *BigInt    { return &BigInt{fq.query.FromBlock} }
+func (fq *FilterQuery) GetToBlock() *BigInt      { return &BigInt{fq.query.ToBlock} }
+func (fq *FilterQuery) GetAddresses() *Addresses { return &Addresses{fq.query.Addresses} }
+func (fq *FilterQuery) GetTopics() *Topics       { return &Topics{fq.query.Topics} }
diff --git a/mobile/geth.go b/mobile/geth.go
new file mode 100644
index 000000000..d7f0800e0
--- /dev/null
+++ b/mobile/geth.go
@@ -0,0 +1,200 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the node package to support client side node
+// management on mobile platforms.
+
+package geth
+
+import (
+	"fmt"
+	"math/big"
+	"path/filepath"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/state"
+	"github.com/ethereum/go-ethereum/eth"
+	"github.com/ethereum/go-ethereum/ethclient"
+	"github.com/ethereum/go-ethereum/les"
+	"github.com/ethereum/go-ethereum/light"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/p2p/nat"
+	"github.com/ethereum/go-ethereum/params"
+	"github.com/ethereum/go-ethereum/whisper/whisperv2"
+)
+
+// NodeConfig represents the collection of configuration values to fine tune the Geth
+// node embedded into a mobile process. The available values are a subset of the
+// entire API provided by go-ethereum to reduce the maintenance surface and dev
+// complexity.
+type NodeConfig struct {
+	// Bootstrap nodes used to establish connectivity with the rest of the network.
+	BootstrapNodes *Enodes
+
+	// MaxPeers is the maximum number of peers that can be connected. If this is
+	// set to zero, then only the configured static and trusted peers can connect.
+	MaxPeers int
+
+	// EthereumEnabled specifies whether the node should run the Ethereum protocol.
+	EthereumEnabled bool
+
+	// EthereumNetworkID is the network identifier used by the Ethereum protocol to
+	// decide if remote peers should be accepted or not.
+	EthereumNetworkID int
+
+	// EthereumChainConfig is the default parameters of the blockchain to use. If no
+	// configuration is specified, it defaults to the main network.
+	EthereumChainConfig *ChainConfig
+
+	// EthereumGenesis is the genesis JSON to use to seed the blockchain with. An
+	// empty genesis state is equivalent to using the mainnet's state.
+	EthereumGenesis string
+
+	// EthereumTestnetNonces specifies whether to use account nonces from the testnet
+	// range (2^20) or from the mainnet one (0).
+	EthereumTestnetNonces bool
+
+	// EthereumDatabaseCache is the system memory in MB to allocate for database caching.
+	// A minimum of 16MB is always reserved.
+	EthereumDatabaseCache int
+
+	// WhisperEnabled specifies whether the node should run the Whisper protocol.
+	WhisperEnabled bool
+}
+
+// defaultNodeConfig contains the default node configuration values to use if all
+// or some fields are missing from the user's specified list.
+var defaultNodeConfig = &NodeConfig{
+	BootstrapNodes:        FoundationBootnodes(),
+	MaxPeers:              25,
+	EthereumEnabled:       true,
+	EthereumNetworkID:     1,
+	EthereumChainConfig:   MainnetChainConfig(),
+	EthereumDatabaseCache: 16,
+}
+
+// NewNodeConfig creates a new node option set, initialized to the default values.
+func NewNodeConfig() *NodeConfig {
+	config := *defaultNodeConfig
+	return &config
+}
+
+// Node represents a Geth Ethereum node instance.
+type Node struct {
+	node *node.Node
+}
+
+// NewNode creates and configures a new Geth node.
+func NewNode(datadir string, config *NodeConfig) (*Node, error) {
+	// If no or partial configurations were specified, use defaults
+	if config == nil {
+		config = NewNodeConfig()
+	}
+	if config.MaxPeers == 0 {
+		config.MaxPeers = defaultNodeConfig.MaxPeers
+	}
+	if config.BootstrapNodes == nil || config.BootstrapNodes.Size() == 0 {
+		config.BootstrapNodes = defaultNodeConfig.BootstrapNodes
+	}
+	// Create the empty networking stack
+	nodeConf := &node.Config{
+		Name:             clientIdentifier,
+		DataDir:          datadir,
+		KeyStoreDir:      filepath.Join(datadir, "keystore"), // Mobile should never use internal keystores!
+		NoDiscovery:      true,
+		DiscoveryV5:      true,
+		DiscoveryV5Addr:  ":0",
+		BootstrapNodesV5: config.BootstrapNodes.nodes,
+		ListenAddr:       ":0",
+		NAT:              nat.Any(),
+		MaxPeers:         config.MaxPeers,
+	}
+	stack, err := node.New(nodeConf)
+	if err != nil {
+		return nil, err
+	}
+	// Register the Ethereum protocol if requested
+	if config.EthereumEnabled {
+		ethConf := &eth.Config{
+			ChainConfig: &params.ChainConfig{
+				HomesteadBlock: big.NewInt(config.EthereumChainConfig.HomesteadBlock),
+				DAOForkBlock:   big.NewInt(config.EthereumChainConfig.DAOForkBlock),
+				DAOForkSupport: config.EthereumChainConfig.DAOForkSupport,
+				EIP150Block:    big.NewInt(config.EthereumChainConfig.EIP150Block),
+				EIP150Hash:     config.EthereumChainConfig.EIP150Hash.hash,
+				EIP155Block:    big.NewInt(config.EthereumChainConfig.EIP155Block),
+				EIP158Block:    big.NewInt(config.EthereumChainConfig.EIP158Block),
+			},
+			Genesis:                 config.EthereumGenesis,
+			LightMode:               true,
+			DatabaseCache:           config.EthereumDatabaseCache,
+			NetworkId:               config.EthereumNetworkID,
+			GasPrice:                new(big.Int).Mul(big.NewInt(20), common.Shannon),
+			GpoMinGasPrice:          new(big.Int).Mul(big.NewInt(20), common.Shannon),
+			GpoMaxGasPrice:          new(big.Int).Mul(big.NewInt(500), common.Shannon),
+			GpoFullBlockRatio:       80,
+			GpobaseStepDown:         10,
+			GpobaseStepUp:           100,
+			GpobaseCorrectionFactor: 110,
+		}
+		if config.EthereumTestnetNonces {
+			state.StartingNonce = 1048576 // (2**20)
+			light.StartingNonce = 1048576 // (2**20)
+		}
+		if err := stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
+			return les.New(ctx, ethConf)
+		}); err != nil {
+			return nil, fmt.Errorf("ethereum init: %v", err)
+		}
+	}
+	// Register the Whisper protocol if requested
+	if config.WhisperEnabled {
+		if err := stack.Register(func(*node.ServiceContext) (node.Service, error) { return whisperv2.New(), nil }); err != nil {
+			return nil, fmt.Errorf("whisper init: %v", err)
+		}
+	}
+	return &Node{stack}, nil
+}
+
+// Start creates a live P2P node and starts running it.
+func (n *Node) Start() error {
+	return n.node.Start()
+}
+
+// Stop terminates a running node along with all it's services. In the node was
+// not started, an error is returned.
+func (n *Node) Stop() error {
+	return n.node.Stop()
+}
+
+// GetEthereumClient retrieves a client to access the Ethereum subsystem.
+func (n *Node) GetEthereumClient() (*EthereumClient, error) {
+	rpc, err := n.node.Attach()
+	if err != nil {
+		return nil, err
+	}
+	return &EthereumClient{ethclient.NewClient(rpc)}, nil
+}
+
+// GetNodeInfo gathers and returns a collection of metadata known about the host.
+func (n *Node) GetNodeInfo() *NodeInfo {
+	return &NodeInfo{n.node.Server().NodeInfo()}
+}
+
+// GetPeersInfo returns an array of metadata objects describing connected peers.
+func (n *Node) GetPeersInfo() *PeerInfos {
+	return &PeerInfos{n.node.Server().PeersInfo()}
+}
diff --git a/mobile/geth_android.go b/mobile/geth_android.go
new file mode 100644
index 000000000..8e4ebe638
--- /dev/null
+++ b/mobile/geth_android.go
@@ -0,0 +1,22 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// +build android
+
+package geth
+
+// clientIdentifier is a hard coded identifier to report into the network.
+var clientIdentifier = "GethDroid"
diff --git a/mobile/geth_ios.go b/mobile/geth_ios.go
new file mode 100644
index 000000000..307cd0858
--- /dev/null
+++ b/mobile/geth_ios.go
@@ -0,0 +1,22 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// +build ios
+
+package geth
+
+// clientIdentifier is a hard coded identifier to report into the network.
+var clientIdentifier = "iGeth"
diff --git a/mobile/geth_other.go b/mobile/geth_other.go
new file mode 100644
index 000000000..6f0c5dda6
--- /dev/null
+++ b/mobile/geth_other.go
@@ -0,0 +1,22 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// +build !android,!ios
+
+package geth
+
+// clientIdentifier is a hard coded identifier to report into the network.
+var clientIdentifier = "GethMobile"
diff --git a/mobile/init.go b/mobile/init.go
new file mode 100644
index 000000000..0fbc6bd3e
--- /dev/null
+++ b/mobile/init.go
@@ -0,0 +1,35 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains initialization code for the mbile library.
+
+package geth
+
+import (
+	"runtime"
+
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/logger/glog"
+)
+
+func init() {
+	// Initialize the logger
+	glog.SetV(logger.Info)
+	glog.SetToStderr(true)
+
+	// Initialize the goroutine count
+	runtime.GOMAXPROCS(runtime.NumCPU())
+}
diff --git a/mobile/interface.go b/mobile/interface.go
new file mode 100644
index 000000000..b585b8642
--- /dev/null
+++ b/mobile/interface.go
@@ -0,0 +1,148 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains perverted wrappers to allow crossing over empty interfaces.
+
+package geth
+
+import (
+	"errors"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+)
+
+// Interface represents a wrapped version of Go's interface{}, with the capacity
+// to store arbitrary data types.
+//
+// Since it's impossible to get the arbitrary-ness converted between Go and mobile
+// platforms, we're using explicit getters and setters for the conversions. There
+// is of course no point in enumerating everything, just enough to support the
+// contract bindins requiring client side generated code.
+type Interface struct {
+	object interface{}
+}
+
+// NewInterface creates a new empty interface that can be used to pass around
+// generic types.
+func NewInterface() *Interface {
+	return new(Interface)
+}
+
+func (i *Interface) SetBool(b bool)                { i.object = &b }
+func (i *Interface) SetBools(bs []bool)            { i.object = &bs }
+func (i *Interface) SetString(str string)          { i.object = &str }
+func (i *Interface) SetStrings(strs *Strings)      { i.object = &strs.strs }
+func (i *Interface) SetBinary(binary []byte)       { i.object = &binary }
+func (i *Interface) SetBinaries(binaries [][]byte) { i.object = &binaries }
+func (i *Interface) SetAddress(address *Address)   { i.object = &address.address }
+func (i *Interface) SetAddresses(addrs *Addresses) { i.object = &addrs.addresses }
+func (i *Interface) SetHash(hash *Hash)            { i.object = &hash.hash }
+func (i *Interface) SetHashes(hashes *Hashes)      { i.object = &hashes.hashes }
+func (i *Interface) SetInt8(n int8)                { i.object = &n }
+func (i *Interface) SetInt16(n int16)              { i.object = &n }
+func (i *Interface) SetInt32(n int32)              { i.object = &n }
+func (i *Interface) SetInt64(n int64)              { i.object = &n }
+func (i *Interface) SetUint8(bigint *BigInt)       { n := uint8(bigint.bigint.Uint64()); i.object = &n }
+func (i *Interface) SetUint16(bigint *BigInt)      { n := uint16(bigint.bigint.Uint64()); i.object = &n }
+func (i *Interface) SetUint32(bigint *BigInt)      { n := uint32(bigint.bigint.Uint64()); i.object = &n }
+func (i *Interface) SetUint64(bigint *BigInt)      { n := uint64(bigint.bigint.Uint64()); i.object = &n }
+func (i *Interface) SetBigInt(bigint *BigInt)      { i.object = &bigint.bigint }
+func (i *Interface) SetBigInts(bigints *BigInts)   { i.object = &bigints.bigints }
+
+func (i *Interface) SetDefaultBool()      { i.object = new(bool) }
+func (i *Interface) SetDefaultBools()     { i.object = new([]bool) }
+func (i *Interface) SetDefaultString()    { i.object = new(string) }
+func (i *Interface) SetDefaultStrings()   { i.object = new([]string) }
+func (i *Interface) SetDefaultBinary()    { i.object = new([]byte) }
+func (i *Interface) SetDefaultBinaries()  { i.object = new([][]byte) }
+func (i *Interface) SetDefaultAddress()   { i.object = new(common.Address) }
+func (i *Interface) SetDefaultAddresses() { i.object = new([]common.Address) }
+func (i *Interface) SetDefaultHash()      { i.object = new(common.Hash) }
+func (i *Interface) SetDefaultHashes()    { i.object = new([]common.Hash) }
+func (i *Interface) SetDefaultInt8()      { i.object = new(int8) }
+func (i *Interface) SetDefaultInt16()     { i.object = new(int16) }
+func (i *Interface) SetDefaultInt32()     { i.object = new(int32) }
+func (i *Interface) SetDefaultInt64()     { i.object = new(int64) }
+func (i *Interface) SetDefaultUint8()     { i.object = new(uint8) }
+func (i *Interface) SetDefaultUint16()    { i.object = new(uint16) }
+func (i *Interface) SetDefaultUint32()    { i.object = new(uint32) }
+func (i *Interface) SetDefaultUint64()    { i.object = new(uint64) }
+func (i *Interface) SetDefaultBigInt()    { i.object = new(*big.Int) }
+func (i *Interface) SetDefaultBigInts()   { i.object = new([]*big.Int) }
+
+func (i *Interface) GetBool() bool            { return *i.object.(*bool) }
+func (i *Interface) GetBools() []bool         { return *i.object.(*[]bool) }
+func (i *Interface) GetString() string        { return *i.object.(*string) }
+func (i *Interface) GetStrings() *Strings     { return &Strings{*i.object.(*[]string)} }
+func (i *Interface) GetBinary() []byte        { return *i.object.(*[]byte) }
+func (i *Interface) GetBinaries() [][]byte    { return *i.object.(*[][]byte) }
+func (i *Interface) GetAddress() *Address     { return &Address{*i.object.(*common.Address)} }
+func (i *Interface) GetAddresses() *Addresses { return &Addresses{*i.object.(*[]common.Address)} }
+func (i *Interface) GetHash() *Hash           { return &Hash{*i.object.(*common.Hash)} }
+func (i *Interface) GetHashes() *Hashes       { return &Hashes{*i.object.(*[]common.Hash)} }
+func (i *Interface) GetInt8() int8            { return *i.object.(*int8) }
+func (i *Interface) GetInt16() int16          { return *i.object.(*int16) }
+func (i *Interface) GetInt32() int32          { return *i.object.(*int32) }
+func (i *Interface) GetInt64() int64          { return *i.object.(*int64) }
+func (i *Interface) GetUint8() *BigInt {
+	return &BigInt{new(big.Int).SetUint64(uint64(*i.object.(*uint8)))}
+}
+func (i *Interface) GetUint16() *BigInt {
+	return &BigInt{new(big.Int).SetUint64(uint64(*i.object.(*uint16)))}
+}
+func (i *Interface) GetUint32() *BigInt {
+	return &BigInt{new(big.Int).SetUint64(uint64(*i.object.(*uint32)))}
+}
+func (i *Interface) GetUint64() *BigInt {
+	return &BigInt{new(big.Int).SetUint64(*i.object.(*uint64))}
+}
+func (i *Interface) GetBigInt() *BigInt   { return &BigInt{*i.object.(**big.Int)} }
+func (i *Interface) GetBigInts() *BigInts { return &BigInts{*i.object.(*[]*big.Int)} }
+
+// Interfaces is a slices of wrapped generic objects.
+type Interfaces struct {
+	objects []interface{}
+}
+
+// NewInterfaces creates a slice of uninitialized interfaces.
+func NewInterfaces(size int) *Interfaces {
+	return &Interfaces{
+		objects: make([]interface{}, size),
+	}
+}
+
+// Size returns the number of interfaces in the slice.
+func (i *Interfaces) Size() int {
+	return len(i.objects)
+}
+
+// Get returns the bigint at the given index from the slice.
+func (i *Interfaces) Get(index int) (*Interface, error) {
+	if index < 0 || index >= len(i.objects) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &Interface{i.objects[index]}, nil
+}
+
+// Set sets the big int at the given index in the slice.
+func (i *Interfaces) Set(index int, object *Interface) error {
+	if index < 0 || index >= len(i.objects) {
+		return errors.New("index out of bounds")
+	}
+	i.objects[index] = object.object
+	return nil
+}
diff --git a/mobile/p2p.go b/mobile/p2p.go
new file mode 100644
index 000000000..97ae626dc
--- /dev/null
+++ b/mobile/p2p.go
@@ -0,0 +1,74 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received pi copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains wrappers for the p2p package.
+
+package geth
+
+import (
+	"errors"
+
+	"github.com/ethereum/go-ethereum/p2p"
+)
+
+// NodeInfo represents pi short summary of the information known about the host.
+type NodeInfo struct {
+	info *p2p.NodeInfo
+}
+
+func (ni *NodeInfo) GetID() string              { return ni.info.ID }
+func (ni *NodeInfo) GetName() string            { return ni.info.Name }
+func (ni *NodeInfo) GetEnode() string           { return ni.info.Enode }
+func (ni *NodeInfo) GetIP() string              { return ni.info.IP }
+func (ni *NodeInfo) GetDiscoveryPort() int      { return ni.info.Ports.Discovery }
+func (ni *NodeInfo) GetListenerPort() int       { return ni.info.Ports.Listener }
+func (ni *NodeInfo) GetListenerAddress() string { return ni.info.ListenAddr }
+func (ni *NodeInfo) GetProtocols() *Strings {
+	protos := []string{}
+	for proto, _ := range ni.info.Protocols {
+		protos = append(protos, proto)
+	}
+	return &Strings{protos}
+}
+
+// PeerInfo represents pi short summary of the information known about pi connected peer.
+type PeerInfo struct {
+	info *p2p.PeerInfo
+}
+
+func (pi *PeerInfo) GetID() string            { return pi.info.ID }
+func (pi *PeerInfo) GetName() string          { return pi.info.Name }
+func (pi *PeerInfo) GetCaps() *Strings        { return &Strings{pi.info.Caps} }
+func (pi *PeerInfo) GetLocalAddress() string  { return pi.info.Network.LocalAddress }
+func (pi *PeerInfo) GetRemoteAddress() string { return pi.info.Network.RemoteAddress }
+
+// PeerInfos represents a slice of infos about remote peers.
+type PeerInfos struct {
+	infos []*p2p.PeerInfo
+}
+
+// Size returns the number of peer info entries in the slice.
+func (pi *PeerInfos) Size() int {
+	return len(pi.infos)
+}
+
+// Get returns the peer info at the given index from the slice.
+func (pi *PeerInfos) Get(index int) (*PeerInfo, error) {
+	if index < 0 || index >= len(pi.infos) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &PeerInfo{pi.infos[index]}, nil
+}
diff --git a/mobile/params.go b/mobile/params.go
new file mode 100644
index 000000000..48344a538
--- /dev/null
+++ b/mobile/params.go
@@ -0,0 +1,89 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the params package.
+
+package geth
+
+import (
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/p2p/discv5"
+	"github.com/ethereum/go-ethereum/params"
+)
+
+// MainnetChainConfig returns the chain configurations for the main Ethereum network.
+func MainnetChainConfig() *ChainConfig {
+	return &ChainConfig{
+		HomesteadBlock: params.MainNetHomesteadBlock.Int64(),
+		DAOForkBlock:   params.MainNetDAOForkBlock.Int64(),
+		DAOForkSupport: true,
+		EIP150Block:    params.MainNetHomesteadGasRepriceBlock.Int64(),
+		EIP150Hash:     Hash{params.MainNetHomesteadGasRepriceHash},
+		EIP155Block:    params.MainNetSpuriousDragon.Int64(),
+		EIP158Block:    params.MainNetSpuriousDragon.Int64(),
+	}
+}
+
+// MainnetGenesis returns the JSON spec to use for the main Ethereum network. It
+// is actually empty since that defaults to the hard coded binary genesis block.
+func MainnetGenesis() string {
+	return ""
+}
+
+// TestnetChainConfig returns the chain configurations for the Ethereum test network.
+func TestnetChainConfig() *ChainConfig {
+	return &ChainConfig{
+		HomesteadBlock: params.TestNetHomesteadBlock.Int64(),
+		DAOForkBlock:   0,
+		DAOForkSupport: false,
+		EIP150Block:    params.TestNetHomesteadGasRepriceBlock.Int64(),
+		EIP150Hash:     Hash{params.TestNetHomesteadGasRepriceHash},
+		EIP155Block:    params.TestNetSpuriousDragon.Int64(),
+		EIP158Block:    params.TestNetSpuriousDragon.Int64(),
+	}
+}
+
+// TestnetGenesis returns the JSON spec to use for the Ethereum test network.
+func TestnetGenesis() string {
+	return core.TestNetGenesisBlock()
+}
+
+// ChainConfig is the core config which determines the blockchain settings.
+type ChainConfig struct {
+	HomesteadBlock int64 // Homestead switch block
+	DAOForkBlock   int64 // TheDAO hard-fork switch block
+	DAOForkSupport bool  // Whether the nodes supports or opposes the DAO hard-fork
+	EIP150Block    int64 // Homestead gas reprice switch block
+	EIP150Hash     Hash  // Homestead gas reprice switch block hash
+	EIP155Block    int64 // Replay protection switch block
+	EIP158Block    int64 // Empty account pruning switch block
+}
+
+// NewChainConfig creates a new chain configuration that transitions immediately
+// to homestead and has no notion of the DAO fork (ideal for a private network).
+func NewChainConfig() *ChainConfig {
+	return new(ChainConfig)
+}
+
+// FoundationBootnodes returns the enode URLs of the P2P bootstrap nodes operated
+// by the foundation running the V5 discovery protocol.
+func FoundationBootnodes() *Enodes {
+	nodes := &Enodes{nodes: make([]*discv5.Node, len(params.DiscoveryV5Bootnodes))}
+	for i, node := range params.DiscoveryV5Bootnodes {
+		nodes.nodes[i] = node
+	}
+	return nodes
+}
diff --git a/mobile/primitives.go b/mobile/primitives.go
new file mode 100644
index 000000000..28f402d4f
--- /dev/null
+++ b/mobile/primitives.go
@@ -0,0 +1,54 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received s copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains various wrappers for primitive types.
+
+package geth
+
+import (
+	"errors"
+	"fmt"
+)
+
+// Strings represents s slice of strs.
+type Strings struct{ strs []string }
+
+// Size returns the number of strs in the slice.
+func (s *Strings) Size() int {
+	return len(s.strs)
+}
+
+// Get returns the string at the given index from the slice.
+func (s *Strings) Get(index int) (string, error) {
+	if index < 0 || index >= len(s.strs) {
+		return "", errors.New("index out of bounds")
+	}
+	return s.strs[index], nil
+}
+
+// Set sets the string at the given index in the slice.
+func (s *Strings) Set(index int, str string) error {
+	if index < 0 || index >= len(s.strs) {
+		return errors.New("index out of bounds")
+	}
+	s.strs[index] = str
+	return nil
+}
+
+// String implements the Stringer interface.
+func (s *Strings) String() string {
+	return fmt.Sprintf("%v", s.strs)
+}
diff --git a/mobile/types.go b/mobile/types.go
new file mode 100644
index 000000000..bb5ccc625
--- /dev/null
+++ b/mobile/types.go
@@ -0,0 +1,189 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the core/types package.
+
+package geth
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/core/types"
+)
+
+// A Nonce is a 64-bit hash which proves (combined with the mix-hash) that
+// a sufficient amount of computation has been carried out on a block.
+type Nonce struct {
+	nonce types.BlockNonce
+}
+
+// GetBytes retrieves the byte representation of the block nonce.
+func (n *Nonce) GetBytes() []byte {
+	return n.nonce[:]
+}
+
+// GetHex retrieves the hex string representation of the block nonce.
+func (n *Nonce) GetHex() string {
+	return fmt.Sprintf("0x%x", n.nonce[:])
+}
+
+// Bloom represents a 256 bit bloom filter.
+type Bloom struct {
+	bloom types.Bloom
+}
+
+// GetBytes retrieves the byte representation of the bloom filter.
+func (b *Bloom) GetBytes() []byte {
+	return b.bloom[:]
+}
+
+// GetHex retrieves the hex string representation of the bloom filter.
+func (b *Bloom) GetHex() string {
+	return fmt.Sprintf("0x%x", b.bloom[:])
+}
+
+// Header represents a block header in the Ethereum blockchain.
+type Header struct {
+	header *types.Header
+}
+
+func (h *Header) GetParentHash() *Hash   { return &Hash{h.header.ParentHash} }
+func (h *Header) GetUncleHash() *Hash    { return &Hash{h.header.UncleHash} }
+func (h *Header) GetCoinbase() *Address  { return &Address{h.header.Coinbase} }
+func (h *Header) GetRoot() *Hash         { return &Hash{h.header.Root} }
+func (h *Header) GetTxHash() *Hash       { return &Hash{h.header.TxHash} }
+func (h *Header) GetReceiptHash() *Hash  { return &Hash{h.header.ReceiptHash} }
+func (h *Header) GetBloom() *Bloom       { return &Bloom{h.header.Bloom} }
+func (h *Header) GetDifficulty() *BigInt { return &BigInt{h.header.Difficulty} }
+func (h *Header) GetNumber() int64       { return h.header.Number.Int64() }
+func (h *Header) GetGasLimit() int64     { return h.header.GasLimit.Int64() }
+func (h *Header) GetGasUsed() int64      { return h.header.GasUsed.Int64() }
+func (h *Header) GetTime() int64         { return h.header.Time.Int64() }
+func (h *Header) GetExtra() []byte       { return h.header.Extra }
+func (h *Header) GetMixDigest() *Hash    { return &Hash{h.header.MixDigest} }
+func (h *Header) GetNonce() *Nonce       { return &Nonce{h.header.Nonce} }
+
+func (h *Header) GetHash() *Hash        { return &Hash{h.header.Hash()} }
+func (h *Header) GetHashNoNonce() *Hash { return &Hash{h.header.HashNoNonce()} }
+
+// Headers represents a slice of headers.
+type Headers struct{ headers []*types.Header }
+
+// Size returns the number of headers in the slice.
+func (h *Headers) Size() int {
+	return len(h.headers)
+}
+
+// Get returns the header at the given index from the slice.
+func (h *Headers) Get(index int) (*Header, error) {
+	if index < 0 || index >= len(h.headers) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &Header{h.headers[index]}, nil
+}
+
+// Block represents an entire block in the Ethereum blockchain.
+type Block struct {
+	block *types.Block
+}
+
+func (b *Block) GetParentHash() *Hash   { return &Hash{b.block.ParentHash()} }
+func (b *Block) GetUncleHash() *Hash    { return &Hash{b.block.UncleHash()} }
+func (b *Block) GetCoinbase() *Address  { return &Address{b.block.Coinbase()} }
+func (b *Block) GetRoot() *Hash         { return &Hash{b.block.Root()} }
+func (b *Block) GetTxHash() *Hash       { return &Hash{b.block.TxHash()} }
+func (b *Block) GetReceiptHash() *Hash  { return &Hash{b.block.ReceiptHash()} }
+func (b *Block) GetBloom() *Bloom       { return &Bloom{b.block.Bloom()} }
+func (b *Block) GetDifficulty() *BigInt { return &BigInt{b.block.Difficulty()} }
+func (b *Block) GetNumber() int64       { return b.block.Number().Int64() }
+func (b *Block) GetGasLimit() int64     { return b.block.GasLimit().Int64() }
+func (b *Block) GetGasUsed() int64      { return b.block.GasUsed().Int64() }
+func (b *Block) GetTime() int64         { return b.block.Time().Int64() }
+func (b *Block) GetExtra() []byte       { return b.block.Extra() }
+func (b *Block) GetMixDigest() *Hash    { return &Hash{b.block.MixDigest()} }
+func (b *Block) GetNonce() int64        { return int64(b.block.Nonce()) }
+
+func (b *Block) GetHash() *Hash        { return &Hash{b.block.Hash()} }
+func (b *Block) GetHashNoNonce() *Hash { return &Hash{b.block.HashNoNonce()} }
+
+func (b *Block) GetHeader() *Header             { return &Header{b.block.Header()} }
+func (b *Block) GetUncles() *Headers            { return &Headers{b.block.Uncles()} }
+func (b *Block) GetTransactions() *Transactions { return &Transactions{b.block.Transactions()} }
+func (b *Block) GetTransaction(hash *Hash) *Transaction {
+	return &Transaction{b.block.Transaction(hash.hash)}
+}
+
+// Transaction represents a single Ethereum transaction.
+type Transaction struct {
+	tx *types.Transaction
+}
+
+func (tx *Transaction) GetData() []byte      { return tx.tx.Data() }
+func (tx *Transaction) GetGas() int64        { return tx.tx.Gas().Int64() }
+func (tx *Transaction) GetGasPrice() *BigInt { return &BigInt{tx.tx.GasPrice()} }
+func (tx *Transaction) GetValue() *BigInt    { return &BigInt{tx.tx.Value()} }
+func (tx *Transaction) GetNonce() int64      { return int64(tx.tx.Nonce()) }
+
+func (tx *Transaction) GetHash() *Hash    { return &Hash{tx.tx.Hash()} }
+func (tx *Transaction) GetSigHash() *Hash { return &Hash{tx.tx.SigHash(types.HomesteadSigner{})} }
+func (tx *Transaction) GetCost() *BigInt  { return &BigInt{tx.tx.Cost()} }
+
+func (tx *Transaction) GetFrom() (*Address, error) {
+	from, err := types.Sender(types.HomesteadSigner{}, tx.tx)
+	return &Address{from}, err
+}
+
+func (tx *Transaction) GetTo() *Address {
+	if to := tx.tx.To(); to != nil {
+		return &Address{*to}
+	}
+	return nil
+}
+
+func (tx *Transaction) WithSignature(sig []byte) (*Transaction, error) {
+	t, err := tx.tx.WithSignature(types.HomesteadSigner{}, sig)
+	return &Transaction{t}, err
+}
+
+// Transactions represents a slice of transactions.
+type Transactions struct{ txs types.Transactions }
+
+// Size returns the number of transactions in the slice.
+func (t *Transactions) Size() int {
+	return len(t.txs)
+}
+
+// Get returns the transaction at the given index from the slice.
+func (t *Transactions) Get(index int) (*Transaction, error) {
+	if index < 0 || index >= len(t.txs) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &Transaction{t.txs[index]}, nil
+}
+
+// Receipt represents the results of a transaction.
+type Receipt struct {
+	receipt *types.Receipt
+}
+
+func (r *Receipt) GetPostState() []byte          { return r.receipt.PostState }
+func (r *Receipt) GetCumulativeGasUsed() *BigInt { return &BigInt{r.receipt.CumulativeGasUsed} }
+func (r *Receipt) GetBloom() *Bloom              { return &Bloom{r.receipt.Bloom} }
+func (r *Receipt) GetLogs() *Logs                { return &Logs{r.receipt.Logs} }
+func (r *Receipt) GetTxHash() *Hash              { return &Hash{r.receipt.TxHash} }
+func (r *Receipt) GetContractAddress() *Address  { return &Address{r.receipt.ContractAddress} }
+func (r *Receipt) GetGasUsed() *BigInt           { return &BigInt{r.receipt.GasUsed} }
diff --git a/mobile/vm.go b/mobile/vm.go
new file mode 100644
index 000000000..a68917ca6
--- /dev/null
+++ b/mobile/vm.go
@@ -0,0 +1,56 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains all the wrappers from the core/types package.
+
+package geth
+
+import (
+	"errors"
+
+	"github.com/ethereum/go-ethereum/core/vm"
+)
+
+// Log represents a contract log event. These events are generated by the LOG
+// opcode and stored/indexed by the node.
+type Log struct {
+	log *vm.Log
+}
+
+func (l *Log) GetAddress() *Address  { return &Address{l.log.Address} }
+func (l *Log) GetTopics() *Hashes    { return &Hashes{l.log.Topics} }
+func (l *Log) GetData() []byte       { return l.log.Data }
+func (l *Log) GetBlockNumber() int64 { return int64(l.log.BlockNumber) }
+func (l *Log) GetTxHash() *Hash      { return &Hash{l.log.TxHash} }
+func (l *Log) GetTxIndex() int       { return int(l.log.TxIndex) }
+func (l *Log) GetBlockHash() *Hash   { return &Hash{l.log.BlockHash} }
+func (l *Log) GetIndex() int         { return int(l.log.Index) }
+
+// Logs represents a slice of VM logs.
+type Logs struct{ logs vm.Logs }
+
+// Size returns the number of logs in the slice.
+func (l *Logs) Size() int {
+	return len(l.logs)
+}
+
+// Get returns the log at the given index from the slice.
+func (l *Logs) Get(index int) (*Log, error) {
+	if index < 0 || index >= len(l.logs) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &Log{l.logs[index]}, nil
+}