Uploading a bitcoin transaction with OP_RETURN

poster.py

# coding: utf-8

from bitcoin import *
import binascii
from test import *

priv = sha256('brain wallet words go here')

pub = privtopub(priv)

addr = pubtoaddr(pub)

inputs = unspent(addr)

message = "HelloWorld"
FullLen = format(len(message)+2,'x').rjust(2,'0')
MessageLen = format(len(message),'x').rjust(2,'0')
ID = binascii.hexlify(str(message))
snd = "6a4c"+MessageLen+ID

outputs = [{'value': 10000, 'address': addr}, {'value': 0, 'script': snd}]

fee = 10000

tx = mksend(inputs, outputs, addr, fee)

dt = deserialize(tx)
#qqq(dt)
ins = dt['ins']

#print addr
print ins


for ind, elm in enumerate(ins):
#	print elm
	tx = sign(tx, ind, priv)

print tx

import requests
send = requests.post('https://insight.bitpay.com/api/tx/send', data=json.dumps({"rawtx":tx}), headers = {'content-type': 'application/json'})

print send.text