change_amount = int(0.0009*100000000) # The amount must be in satoshis; given there are 100,000,000 satoshis per BTC, we have to multiply and cast to an integer.
change_h160 = decode_base58('mpwCA8oeX34hRTiCQ4FYdz5T1164yhkaWN')
change_script = p2pkh_script(change_h160)
change_output = TxOut(amount=change_amount, script_pubkey=change_script)
target_amount = int(0.0001*100000000) # The amount must be in satoshis; given there are 100,000,000 satoshis per BTC, we have to multiply and cast to an integer.
target_script = Script([0x52, pub_key_sec_1, pub_key_sec_2, 0x52, 0xae])
Notes: We get the transaction id as follow in the first time we run this script. As some part of p2sh scrip pubkey is from hash160 so you will get different result everytime you create the transaction.
address: 2NBFottyz3fvsS75wHP1ntqpgeGVxAojhzK
transaction id in first time: b1c59e7971079dee4bb0b1a869747d6172dc16ecacb702a6570946f7008b3675)
raw transaction in first time: 0100000001322f60e7a1dda3c143e42ec0965edf6ed24da989068d60c728f3bca5ba5a4a1b000000006b483045022100bc9ba0555ce0af56c131210c706525d0070dea1fa2fa71418486cfefcf2654de022005618b87af9caacdd2bc6b1a11f838f2a3bf59c87442df7f6631c91b2c79100c012103cbecf2556a1cc7798943865eae7f33f0aea717f8e5cb568974abc1d326d5bc75ffffffff02905f0100000000001976a914674eb0125d5fa1745e7ddca3398507604986bcf888ac102700000000000017a914c58e917f4b2d338dbb85d0bfb8b0e10bec2ff5f98700000000
shuijian-xu
commented
4 years ago
from helper import decode_base58, SIGHASH_ALL, hash256, little_endian_to_int, hash160 from script import p2pkh_script, Script from tx import TxIn, TxOut, Tx from ecc import PrivateKey from helper import SIGHASH_ALL, h160_to_p2sh_address
secret_0 = little_endian_to_int(hash256(b'ShuiJin Xu secret 3')) private_key_0 = PrivateKey(secret_0) print(private_key_0.point.address(testnet=True)) print()
secret_1 = little_endian_to_int(hash256(b'ShuiJin Xu secret 4')) private_key_1 = PrivateKey(secret_1) pub_key_sec_1 = private_key_1.point.sec() print(private_key_1.point.address(testnet=True)) print() secret_2 = little_endian_to_int(hash256(b'ShuiJin Xu secret 5')) private_key_2 = PrivateKey(secret_2) pub_key_sec_2 = private_key_2.point.sec() print(private_key_2.point.address(testnet=True)) print()
prev_tx = bytes.fromhex('1b4a5abaa5bcf328c7608d0689a94dd26edf5e96c02ee443c1a3dda1e7602f32') prev_index = 0 tx_in = TxIn(prev_tx, prev_index)
tx_outs = []
change_amount = int(0.0009*100000000) # The amount must be in satoshis; given there are 100,000,000 satoshis per BTC, we have to multiply and cast to an integer. change_h160 = decode_base58('mpwCA8oeX34hRTiCQ4FYdz5T1164yhkaWN') change_script = p2pkh_script(change_h160) change_output = TxOut(amount=change_amount, script_pubkey=change_script)
target_amount = int(0.0001*100000000) # The amount must be in satoshis; given there are 100,000,000 satoshis per BTC, we have to multiply and cast to an integer. target_script = Script([0x52, pub_key_sec_1, pub_key_sec_2, 0x52, 0xae])
target_output = TxOut(amount=target_amount, script_pubkey=target_script) tx_obj = Tx(1, [tx_in], [change_output, target_output], 0, True) print(tx_obj.serialize().hex()) print()
redeemscript = tx_obj.tx_outs[1].script_pubkey redeemscript_str = redeemscript.serialize().hex() print(redeemscript_str) print()
redeemscript_hash = hash160(redeemscript.serialize()).hex() redeemscript_hash_len = len(redeemscript_hash) print(redeemscript_hash) print()
tx_obj.tx_outs[1].script_pubkey = Script([0xa9, bytes.fromhex(redeemscript_hash), 0x87])
redeemscript = tx_obj.tx_outs[1].script_pubkey redeemscript_str = redeemscript.serialize().hex() print(redeemscript_str) print()
print(h160_to_p2sh_address(bytes.fromhex(redeemscript_hash), True)) print()
z = tx_obj.sig_hash(0)
point = private_key_0.point sig = private_key_0.sign(z) print(point.verify(z, sig)) print()
sig_der=sig.der() sigs = sig_der + SIGHASH_ALL.to_bytes(1, 'big') sec = point.sec() script_sig = Script([sigs, sec]) tx_obj.tx_ins[0].script_sig = script_sig
print(tx_obj.serialize().hex()) print()
print(tx_obj.id()) print()