def serialize(self, for_sig=None):
inputs = self.inputs()
outputs = self.outputs()
s = int_to_hex(1, 4) # version
s += var_int(len(inputs)) # number of inputs
for i, txin in enumerate(inputs):
s += self.serialize_input(txin, i, for_sig)
s += var_int(len(outputs)) # number of outputs
for output in outputs:
output_type, addr, amount = output
s += int_to_hex(amount, 8) # amount
script = self.pay_script(output_type, addr)
s += var_int(len(script) / 2) # script length
s += script # script
s += int_to_hex(0, 4) # lock time
if for_sig is not None and for_sig != -1:
s += int_to_hex(1, 4) # hash type
return s
def serialize_input(cls, txin, i, for_sig):
# Prev hash and index
s = txin['prevout_hash'].decode('hex')[::-1].encode('hex')
s += int_to_hex(txin['prevout_n'], 4)
# Script length, script, sequence
script = cls.input_script(txin, i, for_sig)
s += var_int(len(script) / 2)
s += script
s += "ffffffff"
return s
def msg_magic(message):
varint = var_int(len(message))
encoded_varint = "".join(
[chr(int(varint[i:i + 2], 16)) for i in xrange(0, len(varint), 2)])
return "\x18Bitcoin Signed Message:\n" + encoded_varint + message
