def get_preimage_script(self, txin):
_type = txin.type()
if _type == 'p2pkh':
return txin.address.to_script_bytes().hex()
elif _type == 'p2sh':
pubkeys = [x_pubkey.to_public_key() for x_pubkey in txin.x_pubkeys]
return multisig_script(pubkeys, txin.threshold).hex()
elif _type == 'p2pk':
x_pubkey = txin.x_pubkeys[0]
output = P2PK_Output(x_pubkey.to_public_key())
return output.to_script_bytes().hex()
else:
raise RuntimeError('Unknown txin type', _type)
def get_preimage_script(self, txin):
_type = txin['type']
if _type == 'p2pkh':
return txin['address'].to_script_bytes().hex()
elif _type == 'p2sh':
pubkeys, x_pubkeys = self.get_sorted_pubkeys(txin)
return multisig_script(pubkeys, txin['num_sig'])
elif _type == 'p2pk':
output = P2PK_Output(PublicKey.from_hex(txin['pubkeys'][0]))
return output.to_script_bytes().hex()
elif _type == 'unknown':
# this approach enables most P2SH smart contracts
# (but take care if using OP_CODESEPARATOR)
return txin['scriptCode']
else:
raise RuntimeError('Unknown txin type', _type)