fix: encode hash
fix: encode hash

ethereum/pyethereum,inzem77/pyethereum,shahankhatch/pyethereum,ddworken/pyethereum,karlfloersch/pyethereum,holiman/pyethereum,karlfloersch/pyethereum,ethermarket/pyethereum,harlantwood/pyethereum,ethereum/pyethereum,pipermerriam/pyethereum,shahankhatch/pyethereum,vaporry/pyethereum,pipermerriam/pyethereum,ckeenan/pyethereum