1 files changed, 5 insertions, 0 deletions
diff --git a/ethutil/bytes.go b/ethutil/bytes.go
index 500368017..b298675a2 100644
--- a/ethutil/bytes.go
+++ b/ethutil/bytes.go
@@ -83,3 +83,8 @@ func CopyBytes(b []byte) (copiedBytes []byte) {
 
 	return
 }
+
+func IsHex(str string) bool {
+	l := len(str)
+	return l >= 4 && l%2 == 0 && str[0:2] == "0x"
+}