def main():
# always remember to setup the network
setup('testnet')
priv1 = PrivateKey("cN1XE3ESGgdvr4fWsB7L3BcqXncUauF8Fo8zzv4Sm6WrkiGrsxrG")
priv2 = PrivateKey("cR8AkcbL2pgBswrHp28AftEznHPPLA86HiTog8MpNCibxwrsUcZ4")
p2sh_redeem_script = Script(
['OP_1', priv1.get_public_key().to_hex(), priv2.get_public_key().to_hex(),'OP_2', 'OP_CHECKMULTISIG'])
fromAddress = P2wshAddress.from_script(p2sh_redeem_script)
toAddress = P2wpkhAddress.from_address("tb1qtstf97nhk2gycz7vl37esddjpxwt3ut30qp5pn")
# set values
txid = '2042195c40a92353f2ffe30cd0df8d177698560e81807e8bf9174a9c0e98e6c2'
vout = 0
amount = 0.01
# create transaction input from tx id of UTXO
txin = TxInput(txid, vout)
txOut1 = TxOutput(0.0001, toAddress.to_script_pub_key())
txOut2 = TxOutput(0.0098, fromAddress.to_script_pub_key())
tx = Transaction([txin], [txOut1, txOut2], has_segwit=True)
sig1 = priv1.sign_segwit_input(tx, 0, p2sh_redeem_script, amount)
tx.witnesses.append(Script(['OP_0', sig1, p2sh_redeem_script.to_hex()]))
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + tx.serialize())
print("\nTxId:", tx.get_txid())
def main():
# always remember to setup the network
setup('testnet')
#
# This script creates a P2SH address containing a P2PK script and sends
# some funds to it
#
# create transaction input from tx id of UTXO (contained 0.1 tBTC)
txin = TxInput(
'76464c2b9e2af4d63ef38a77964b3b77e629dddefc5cb9eb1a3645b1608b790f', 0)
# address we are spending from
from_addr = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
# secret key of address that we are trying to spent
sk = PrivateKey('cTALNpTpRbbxTCJ2A5Vq88UxT44w1PE2cYqiB3n4hRvzyCev1Wwo')
#
# create transaction output using P2SH scriptPubKey (locking script)
# (the recipient will give us the final address but for now we create it
# for demonstration purposes)
#
# secret key corresponding to the pubkey needed for the P2SH (P2PK) transaction
p2pk_sk = PrivateKey(
'cRvyLwCPLU88jsyj94L7iJjQX5C2f8koG4G2gevN4BeSGcEvfKe9')
p2pk_pk = p2pk_sk.get_public_key().to_hex()
redeem_script = Script([p2pk_pk, 'OP_CHECKSIG'])
txout = TxOutput(Decimal('0.09'), redeem_script.to_p2sh_script_pub_key())
# no change address - the remaining 0.01 tBTC will go to miners)
# create transaction from inputs/outputs -- default locktime is used
tx = Transaction([txin], [txout])
# print raw transaction
print("\nRaw unsigned transaction:\n" + tx.serialize())
# use the private key corresponding to the address that contains the
# UTXO we are trying to spend to create the signature for the txin
sig = sk.sign_input(tx, 0, from_addr.to_script_pub_key())
#print(sig)
# get public key as hex
pk = sk.get_public_key()
pk = pk.to_hex()
#print (pk)
# set the scriptSig (unlocking script)
txin.script_sig = Script([sig, pk])
signed_tx = tx.serialize()
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + signed_tx)
print("\nTxId:", tx.get_txid())
def main():
# always remember to setup the network
setup('testnet')
# send 2 P2PKH inputs to 1 P2WPKH output
# create transaction inputs from tx ids of UTXOs (contained 0.002 tBTC)
txin = TxInput('eddfaa3d5a1c9a2a2961638aa4e28871b09ed9620f9077482248f368d46d8205', 1)
txin2 = TxInput('cf4b2987c06b9dd2ba6770af31a4942a4ea3e7194c0d64e8699e9fda03f50551', 1)
# create transaction output using P2WPKH scriptPubKey (locking script)
addr = P2wpkhAddress('tb1qlffsz7cgzmyzhklleu97afru7vwjytux4z4zsl')
txout = TxOutput(to_satoshis(0.0019), addr.to_script_pub_key())
#txout = TxOutput(to_satoshis(0.0019), Script([0, addr.to_hash()]) )
# create transaction from inputs/outputs -- default locktime is used
# note that this is not a segwit transaction since we don't spend segwit
tx = Transaction([txin, txin2], [txout]) #, has_segwit=True)
# print raw transaction
print("\nRaw unsigned transaction:\n" + tx.serialize())
# use the private keys corresponding to the address that contains the
# UTXOs we are trying to spend to sign the input
sk = PrivateKey('cTALNpTpRbbxTCJ2A5Vq88UxT44w1PE2cYqiB3n4hRvzyCev1Wwo')
sk2 = PrivateKey('cVf3kGh6552jU2rLaKwXTKq5APHPoZqCP4GQzQirWGHFoHQ9rEVt')
# note that we pass the scriptPubkey as one of the inputs of sign_input
# because it is used to replace the scriptSig of the UTXO we are trying to
# spend when creating the transaction digest
from_addr = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
sig = sk.sign_input( tx, 0, Script(['OP_DUP', 'OP_HASH160',
from_addr.to_hash160(), 'OP_EQUALVERIFY',
'OP_CHECKSIG']) )
from_addr2 = P2pkhAddress('mmYNBho9BWQB2dSniP1NJvnPoj5EVWw89w')
sig2 = sk2.sign_input( tx, 1, from_addr2.to_script_pub_key() )
# get public key as hex
pk = sk.get_public_key().to_hex()
pk2 = sk2.get_public_key().to_hex()
# set the scriptSig (unlocking script)
txin.script_sig = Script([sig, pk])
txin2.script_sig = Script([sig2, pk2])
signed_tx = tx.serialize()
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + signed_tx)
def main():
# always remember to setup the network
setup('regtest')
#
# This script creates a P2SH address containing a
# CHECKLOCKTIMEVERIFY plus a P2PKH locking funds with a key
# until a certain block_height is reached
#
# set values
block_height = 140
seq = Sequence(TYPE_ABSOLUTE_TIMELOCK, block_height)
# secret key corresponding to the pubkey needed for the P2SH (P2PKH) transaction
p2pkh_sk = PrivateKey('cSbKZh6a6wNUAQ8pr2KLKeZCQ4eJnFmN35wtReaoU4kCP97XQu6W')
# get the address (from the public key)
p2pkh_addr = p2pkh_sk.get_public_key().get_address()
# create the redeem script
redeem_script = Script([seq.for_script(), 'OP_CHECKLOCKTIMEVERIFY', 'OP_DROP', 'OP_DUP', 'OP_HASH160', p2pkh_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'])
# create a P2SH address from a redeem script
addr = P2shAddress.from_script(redeem_script)
print(addr.to_string())
def main():
# always remember to setup the network
setup('testnet')
#
# This script creates a P2SH address containing a CHECKSEQUENCEVERIFY plus
# a P2PKH locking funds with a key as well as for 20 blocks
#
# set values
relative_blocks = 20
seq = Sequence(TYPE_RELATIVE_TIMELOCK, relative_blocks)
# secret key corresponding to the pubkey needed for the P2SH (P2PKH) transaction
p2pkh_sk = PrivateKey(
'cRvyLwCPLU88jsyj94L7iJjQX5C2f8koG4G2gevN4BeSGcEvfKe9')
# get the address (from the public key)
p2pkh_addr = p2pkh_sk.get_public_key().get_address()
# create the redeem script
redeem_script = Script([
seq.for_script(), 'OP_CHECKSEQUENCEVERIFY', 'OP_DROP', 'OP_DUP',
'OP_HASH160',
p2pkh_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
# create a P2SH address from a redeem script
addr = P2shAddress.from_script(redeem_script)
print(addr.to_string())
class TestCreateP2shTransaction(unittest.TestCase):
def setUp(self):
setup('testnet')
# values for testing create non std tx
self.txin = TxInput("e2d08a63a540000222d6a92440436375d8b1bc89a2638dc5366833804287c83f", 1)
self.to_addr = P2pkhAddress('msXP94TBncQ9usP6oZNpGweE24biWjJs2d')
self.sk = PrivateKey('cMahea7zqjxrtgAbB7LSGbcQUr1uX1ojuat9jZodMN87JcbXMTcA')
self.txout = TxOutput( 0.9, Script(['OP_ADD', 'OP_5', 'OP_EQUAL']) )
self.change_addr = P2pkhAddress('mrCDrCybB6J1vRfbwM5hemdJz73FwDBC8r')
self.change_txout = TxOutput( 2, self.change_addr.to_script_pub_key())
self.create_non_std_tx_result = '02000000013fc8874280336836c58d63a289bcb1d87563434024a9d622020040a5638ad0e2010000006a47304402201febc032331342baaece4b88c7ab42d7148c586b9a48944cbebde95636ac7424022018f0911a4ba664ac8cc21457a58e3a1214ba92b84cb60e57f4119fe655b3a78901210279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798ffffffff02804a5d05000000000393558700c2eb0b000000001976a914751e76e8199196d454941c45d1b3a323f1433bd688ac00000000'
# values for testing create non std tx
self.txin_spend = TxInput("4d9a6baf45d4b57c875fe83d5e0834568eae4b5ef6e61d13720ef6685168e663", 0)
self.txin_spend.script_sig = Script(['OP_2', 'OP_3'])
self.txout_spend = TxOutput( 0.8, self.change_addr.to_script_pub_key())
self.spend_non_std_tx_result = '020000000163e6685168f60e72131de6f65e4bae8e5634085e3de85f877cb5d445af6b9a4d00000000025253ffffffff0100b4c404000000001976a914751e76e8199196d454941c45d1b3a323f1433bd688ac00000000'
def test_send_to_non_std(self):
tx = Transaction([self.txin], [self.txout, self.change_txout])
from_addr = P2pkhAddress('mrCDrCybB6J1vRfbwM5hemdJz73FwDBC8r')
sig = self.sk.sign_input( tx, 0, from_addr.to_script_pub_key() )
pk = self.sk.get_public_key().to_hex()
self.txin.script_sig = Script([sig, pk])
self.assertEqual(tx.serialize(), self.create_non_std_tx_result)
def test_spend_non_std(self):
tx = Transaction([self.txin_spend], [self.txout_spend])
self.assertEqual(tx.serialize(), self.spend_non_std_tx_result)
def main():
# always remember to setup the network
setup('testnet')
# create transaction input from tx id of UTXO (contained 0.4 tBTC)
txin = TxInput(
'fb48f4e23bf6ddf606714141ac78c3e921c8c0bebeb7c8abb2c799e9ff96ce6c', 0)
# create transaction output using P2PKH scriptPubKey (locking script)
addr = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
txout = TxOutput(
Decimal('0.1'),
Script([
'OP_DUP', 'OP_HASH160',
addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
]))
# create another output to get the change - remaining 0.01 is tx fees
# note that this time we used to_script_pub_key() to create the P2PKH
# script
change_addr = P2pkhAddress('mmYNBho9BWQB2dSniP1NJvnPoj5EVWw89w')
change_txout = TxOutput(Decimal('0.29'), change_addr.to_script_pub_key())
#change_txout = TxOutput(Decimal('0.29'), Script(['OP_DUP', 'OP_HASH160',
# change_addr.to_hash160(),
# 'OP_EQUALVERIFY', 'OP_CHECKSIG']))
# create transaction from inputs/outputs -- default locktime is used
tx = Transaction([txin], [txout, change_txout])
# print raw transaction
print("\nRaw unsigned transaction:\n" + tx.serialize())
# use the private key corresponding to the address that contains the
# UTXO we are trying to spend to sign the input
sk = PrivateKey('cRvyLwCPLU88jsyj94L7iJjQX5C2f8koG4G2gevN4BeSGcEvfKe9')
# note that we pass the scriptPubkey as one of the inputs of sign_input
# because it is used to replace the scriptSig of the UTXO we are trying to
# spend when creating the transaction digest
from_addr = P2pkhAddress('myPAE9HwPeKHh8FjKwBNBaHnemApo3dw6e')
sig = sk.sign_input(
tx, 0,
Script([
'OP_DUP', 'OP_HASH160',
from_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
]))
#print(sig)
# get public key as hex
pk = sk.get_public_key()
pk = pk.to_hex()
#print (pk)
# set the scriptSig (unlocking script)
txin.script_sig = Script([sig, pk])
signed_tx = tx.serialize()
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + signed_tx)
def main():
# always remember to setup the network
setup('testnet')
priv0 = PrivateKey("cN1XE3ESGgdvr4fWsB7L3BcqXncUauF8Fo8zzv4Sm6WrkiGrsxrG")
pub = priv0.get_public_key()
fromAddress = pub.get_segwit_address()
priv1 = PrivateKey("cN1XE3ESGgdvr4fWsB7L3BcqXncUauF8Fo8zzv4Sm6WrkiGrsxrG")
# P2SH Script: OP_M <Public key 1> <Public key 2> ... OP_N OP_CHECKMULTISIG
p2sh_redeem_script = Script(
['OP_1',
priv1.get_public_key().to_hex(), 'OP_1', 'OP_CHECKMULTISIG'])
toAddress = P2wshAddress.from_script(p2sh_redeem_script)
# set values
txid = 'd222d91e2da368ac38e84aa615c557e4caeacce02aa5dbca10d840fd460fc938'
vout = 0
amount = Decimal('0.01764912')
# create transaction input from tx id of UTXO
txin = TxInput(txid, vout)
redeem_script1 = Script([
'OP_DUP', 'OP_HASH160',
priv0.get_public_key().to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
# create transaction output
txOut1 = TxOutput(Decimal('0.0001'), toAddress.to_script_pub_key())
txOut2 = TxOutput(Decimal('0.01744912'), fromAddress.to_script_pub_key())
# create transaction
tx = Transaction([txin], [txOut1, txOut2], has_segwit=True)
print("\nRaw transaction:\n" + tx.serialize())
sig1 = priv0.sign_segwit_input(tx, 0, redeem_script1, amount)
tx.witnesses.append(Script([sig1, pub.to_hex()]))
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + tx.serialize())
print("\nTxId:", tx.get_txid())
class Id:
"""
Helper class for handling identity related keys and addresses easily
"""
def __init__(self, sk: str):
self.sk = PrivateKey(secret_exponent=int(sk, 16))
self.pk = self.sk.get_public_key()
self.addr = self.pk.get_address().to_string()
self.p2pkh = P2pkhAddress(self.addr).to_script_pub_key()
def main():
# always remember to setup the network
setup('testnet')
priv = PrivateKey("cVdte9ei2xsVjmZSPtyucG43YZgNkmKTqhwiUA8M4Fc3LdPJxPmZ")
pub = priv.get_public_key()
fromAddress = pub.get_segwit_address()
print(fromAddress.to_string())
# amount is needed to sign the segwit input
fromAddressAmount = 0.01
# UTXO of fromAddress
txid = '13d2d30eca974e8fa5da11b9608fa36905a22215e8df895e767fc903889367ff'
vout = 0
toAddress = P2pkhAddress('mrrKUpJnAjvQntPgz2Z4kkyr1gbtHmQv28')
# create transaction input from tx id of UTXO
txin = TxInput(txid, vout)
# the redeem script for p2wpkh is the same as p2pkh
redeem_script = Script([
'OP_DUP', 'OP_HASH160',
priv.get_public_key().to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
# create transaction output
txOut = TxOutput(0.009, toAddress.to_script_pub_key())
# create transaction without change output
tx = Transaction([txin], [txOut], has_segwit=True)
print("\nRaw transaction:\n" + tx.serialize())
sig = priv.sign_segwit_input(tx, 0, redeem_script, fromAddressAmount)
tx.witnesses.append(Script([sig, pub.to_hex()]))
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + tx.serialize())
print("\nTxId:", tx.get_txid())
def main():
# always remember to setup the network
setup('testnet') # same params as regest, which the node should run
# create transaction input from tx id of UTXO (contained 0.4 tBTC)
txin = TxInput(
'e2d08a63a540000222d6a92440436375d8b1bc89a2638dc5366833804287c83f', 1)
# create transaction output using P2PKH scriptPubKey (locking script)
addr = P2pkhAddress('msXP94TBncQ9usP6oZNpGweE24biWjJs2d')
# locking script expects 2 numbers that when added equal 5 (silly example)
txout = TxOutput(0.9, Script(['OP_ADD', 'OP_5', 'OP_EQUAL']))
# create another output to get the change - remaining 0.01 is tx fees
# note that this time we used to_script_pub_key() to create the P2PKH
# script
change_addr = P2pkhAddress('mrCDrCybB6J1vRfbwM5hemdJz73FwDBC8r')
change_txout = TxOutput(2, change_addr.to_script_pub_key())
# create transaction from inputs/outputs -- default locktime is used
tx = Transaction([txin], [txout, change_txout])
# print raw transaction
print("\nRaw unsigned transaction:\n" + tx.serialize())
# use the private key corresponding to the address that contains the
# UTXO we are trying to spend to sign the input
sk = PrivateKey('cMahea7zqjxrtgAbB7LSGbcQUr1uX1ojuat9jZodMN87JcbXMTcA')
# note that we pass the scriptPubkey as one of the inputs of sign_input
# because it is used to replace the scriptSig of the UTXO we are trying to
# spend when creating the transaction digest
from_addr = P2pkhAddress('mrCDrCybB6J1vRfbwM5hemdJz73FwDBC8r')
sig = sk.sign_input(
tx, 0,
Script([
'OP_DUP', 'OP_HASH160',
from_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
]))
#print(sig)
# get public key as hex
pk = sk.get_public_key()
pk = pk.to_hex()
#print (pk)
# set the scriptSig (unlocking script)
txin.script_sig = Script([sig, pk])
signed_tx = tx.serialize()
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + signed_tx)
def main():
# always remember to setup the network
setup('testnet')
#
# This script spends from a P2SH address containing a P2PK script
#
# create transaction input from tx id of UTXO (contained 0.1 tBTC)
txin = TxInput(
'7db363d5a7fabb64ccce154e906588f1936f34481223ea8c1f2c935b0a0c945b', 0)
# secret key needed to spend P2PK that is wrapped by P2SH
p2pk_sk = PrivateKey(
'cRvyLwCPLU88jsyj94L7iJjQX5C2f8koG4G2gevN4BeSGcEvfKe9')
p2pk_pk = p2pk_sk.get_public_key().to_hex()
# create the redeem script - needed to sign the transaction
redeem_script = Script([p2pk_pk, 'OP_CHECKSIG'])
#TODELETE
#txin_script_pub_key = redeem_script.to_p2sh_script_pub_key()
to_addr = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
txout = TxOutput(Decimal('0.08'), to_addr.to_script_pub_key())
# no change address - the remaining 0.01 tBTC will go to miners)
# create transaction from inputs/outputs -- default locktime is used
tx = Transaction([txin], [txout])
# print raw transaction
print("\nRaw unsigned transaction:\n" + tx.serialize())
# use the private key corresponding to the address that contains the
# UTXO we are trying to spend to create the signature for the txin -
# note that the redeem script is passed to replace the scriptSig
sig = p2pk_sk.sign_input(tx, 0, redeem_script)
#print(sig)
# set the scriptSig (unlocking script)
txin.script_sig = Script([sig, redeem_script.to_hex()])
signed_tx = tx.serialize()
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + signed_tx)
print("\nTxId:", tx.get_txid())
def main():
# always remember to setup the network
setup('testnet')
# the key that corresponds to the P2WPKH address
priv = PrivateKey('cNho8fw3bPfLKT4jPzpANTsxTsP8aTdVBD6cXksBEXt4KhBN7uVk')
pub = priv.get_public_key()
# the p2sh script and the corresponding address
redeem_script = pub.get_segwit_address().to_script_pub_key()
p2sh_addr = P2shAddress.from_script(redeem_script)
# the UTXO of the P2SH-P2WPKH that we are trying to spend
inp = TxInput('95c5cac558a8b47436a3306ba300c8d7af4cd1d1523d35da3874153c66d99b09', 0)
# exact amount of UTXO we try to spent
amount = 0.0014
# the address to send funds to
to_addr = P2pkhAddress('mvBGdiYC8jLumpJ142ghePYuY8kecQgeqS')
# the output sending 0.001 -- 0.0004 goes to miners as fee -- no change
out = TxOutput(to_satoshis(0.001), to_addr.to_script_pub_key())
# create a tx with at least one segwit input
tx = Transaction([inp], [out], has_segwit=True)
# script code is the script that is evaluated for a witness program type; each
# witness program type has a specific template for the script code
# script code that corresponds to P2WPKH (it is the classic P2PKH)
script_code = pub.get_address().to_script_pub_key()
# calculate signature using the appropriate script code
# remember to include the original amount of the UTXO
sig = priv.sign_segwit_input(tx, 0, script_code, to_satoshis(amount))
# script_sig is the redeem script passed as a single element
inp.script_sig = Script([redeem_script.to_hex()])
# finally, the unlocking script is added as a witness
tx.witnesses.append(Script([sig, pub.to_hex()]))
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + tx.serialize())
def main() :
setup('testnet')
relative_blocks = 20
seq = Sequence(TYPE_RELATIVE_TIMELOCK, relative_blocks)
p2pkh_sk = PrivateKey('cRvyLwCPLU88jsyj94L7iJjQX5C2f8koG4G2gevN4BeSGcEvfKe9')
p2pkh_addr = p2pkh_sk.get_public_key().get_address()
print("Address : " + p2pkh_addr.to_string())
redeem_script = Script([seq.for_script(), 'OP_CHECKSEQUENCEVERIFY', 'OP_DROP', 'OP_DUP', 'OP_HASH160'
, p2pkh_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'])
addr = P2shAddress.from_script(redeem_script)
print(addr.to_string())
def main():
# always remember to setup the network
setup('mainnet')
# create a private key (deterministically)
priv = PrivateKey(secret_exponent=1)
# compressed is the default
print("\nPrivate key WIF:", priv.to_wif(compressed=True))
# could also instantiate from existing WIF key
#priv = PrivateKey.from_wif('KwDiBf89qGgbjEhKnhxjUh7LrciVRzI3qYjgd9m7Rfu73SvHnOwn')
# get the public key
pub = priv.get_public_key()
# compressed is the default
print("Public key:", pub.to_hex(compressed=True))
# get address from public key
address = pub.get_address()
# print the address and hash160 - default is compressed address
print("Address:", address.to_string())
print("Hash160:", address.to_hash160())
print("\n--------------------------------------\n")
# sign a message with the private key and verify it
message = "The test!"
signature = priv.sign_message(message)
print("The message to sign:", message)
print("The signature is:", signature)
if PublicKey.verify_message(address.to_string(), signature, message):
print("The signature is valid!")
else:
print("The signature is NOT valid!")
def tx_encf(self, vk_p, ct_c, user_conf_file_path):
user_conf_file = open(user_conf_file_path)
conf = json.load(user_conf_file)
sk_u = conf['SK']
sk_u = PrivateKey(secret_exponent=int(sk_u, 16))
vk_u = sk_u.get_public_key()
addr_u = vk_u.get_address().to_string()
#txid = '826711590bb543028418d312cf2229eba1b4fbf295fa73dbc37654085e1fc925'
#txid = '49ab8b8f6913d5fb97c067fe9466710f62e195bab5366e484d1b2334a5b5c0c8'
#tx_index = 1
txid = input(
"Fund the address: {0} \nand insert the txid:\n".format(addr_u))
tx_index = input("tx_index:\n")
print("txid: ", txid)
print("tx_index: ", tx_index)
signed_tx_hex = self._tx_encf('04' + vk_p, ct_c, sk_u, txid,
int(tx_index))
#tx_hash = "88e602cc4766edd442ee99270f2e94bf6f7625a9b49721311fc9bba4dfe8defa"
tx_hash = self.proxy.sendrawtransaction(signed_tx_hex)
return tx_hash
def main():
setup('testnet')
txin = TxInput(
'76464c2b9e2af4d63ef38a77964b3b77e629dddefc5cb9eb1a3645b1608b790f', 0)
from_addr = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
print("From Address : ", from_addr)
sk = PrivateKey('cTALNpTpRbbxTCJ2A5Vq88UxT44w1PE2cYqiB3n4hRvzyCev1Wwo')
p2pk_sk = PrivateKey(
'cRvyLwCPLU88jsyj94L7iJjQX5C2f8koG4G2gevN4BeSGcEvfKe9')
p2pk_pk = p2pk_sk.get_public_key().to_hex()
redeem_script = Script([p2pk_pk, 'OP_CHECKSIG'])
txout = TxOutput(to_satoshis(0.09), redeem_script.to_p2sh_script_pub_key())
tx = Transaction([txin], [txout])
print("Raw transaction", tx.serialize())
def test_public_key(self):
p = PrivateKey(secret_exponent=1)
self.assertEqual(p.get_public_key().to_bytes(), self.public_key_bytes)
# 1. Setup the network.You can use either the mainnet or the testnet.
setup('testnet')
# 2. Create a private key. Do you all have the same private key?
# private keys are from definition random numbers
priv = PrivateKey(secret_exponent=1)
# 3. What is the WIF (wallet import format) format (uncompressed) of the private key?
print("\nPrivate key WIF:", priv.to_wif(compressed=False))
# 4. What is the WIF format (compressed) of the private key?
print("\nPrivate key WIF:", priv.to_wif(compressed=True))
# 5. What is the corresponding public key? In uncompressed and compressed forms.
# public keys are generated from private keys using ECDSA cryptographic function
pub = priv.get_public_key()
print("Public key:", pub.to_hex(compressed=False))
print("Public key:", pub.to_hex(compressed=True))
# 6. What is the corresponding address? Get address from public key
address = pub.get_address()
print("Address:", address.to_string())
# Q: What does the address start with? Why?
# The address starts with m (Base58 result prefix) because it is a Bitcoin testnet address
# 7. What is the hash160 representation of the address?
print("Hash160:", address.to_hash160())
# 8. What is the scriptPubKey (locking script) of the address?
def main():
# always remember to setup the network
setup('testnet')
# create transaction input from tx id of UTXO (contained 0.39 tBTC)
# 0.1 tBTC
txin = TxInput(
'76464c2b9e2af4d63ef38a77964b3b77e629dddefc5cb9eb1a3645b1608b790f', 0)
# 0.29 tBTC
txin2 = TxInput(
'76464c2b9e2af4d63ef38a77964b3b77e629dddefc5cb9eb1a3645b1608b790f', 1)
# create transaction output using P2PKH scriptPubKey (locking script)
addr = P2pkhAddress('myPAE9HwPeKHh8FjKwBNBaHnemApo3dw6e')
txout = TxOutput(
0.3,
Script([
'OP_DUP', 'OP_HASH160',
addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
]))
# create another output to get the change - remaining 0.01 is tx fees
change_addr = P2pkhAddress('mmYNBho9BWQB2dSniP1NJvnPoj5EVWw89w')
change_txout = TxOutput(
0.08,
Script([
'OP_DUP', 'OP_HASH160',
change_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
]))
# create transaction from inputs/outputs -- default locktime is used
tx = Transaction([txin, txin2], [txout, change_txout])
# print raw transaction
print("\nRaw unsigned transaction:\n" + tx.serialize())
#
# use the private keys corresponding to the addresses that contains the
# UTXOs we are trying to spend to create the signatures
#
sk = PrivateKey('cTALNpTpRbbxTCJ2A5Vq88UxT44w1PE2cYqiB3n4hRvzyCev1Wwo')
sk2 = PrivateKey('cVf3kGh6552jU2rLaKwXTKq5APHPoZqCP4GQzQirWGHFoHQ9rEVt')
# we could have derived the addresses from the secret keys
from_addr = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
from_addr2 = P2pkhAddress('mmYNBho9BWQB2dSniP1NJvnPoj5EVWw89w')
# sign the first input
sig = sk.sign_input(
tx, 0,
Script([
'OP_DUP', 'OP_HASH160',
from_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
]), SIGHASH_ALL | SIGHASH_ANYONECANPAY)
#print(sig)
# sign the second input
sig2 = sk2.sign_input(
tx, 1,
Script([
'OP_DUP', 'OP_HASH160',
from_addr2.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
]), SIGHASH_SINGLE | SIGHASH_ANYONECANPAY)
#print(sig2)
# get public key as hex
pk = sk.get_public_key()
pk = pk.to_hex()
#print (pk)
# get public key as hex
pk2 = sk2.get_public_key()
pk2 = pk2.to_hex()
# set the scriptSig (unlocking script)
txin.script_sig = Script([sig, pk])
txin2.script_sig = Script([sig2, pk2])
signed_tx = tx.serialize()
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + signed_tx)
print("\nTxId:", tx.get_txid())
class TestCreateP2pkhTransaction(unittest.TestCase):
def setUp(self):
setup('testnet')
# values for testing unsigned tx, signed tx all, signed tx with low s,
# sighash none
self.txin = TxInput('fb48f4e23bf6ddf606714141ac78c3e921c8c0bebeb7c8abb2c799e9ff96ce6c', 0)
self.addr = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
self.txout = TxOutput(Decimal('0.1'), Script(['OP_DUP', 'OP_HASH160', self.addr.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG']) )
self.change_addr = P2pkhAddress('mytmhndz4UbEMeoSZorXXrLpPfeoFUDzEp')
self.change_txout = TxOutput(Decimal('0.29'), self.change_addr.to_script_pub_key())
self.change_low_s_addr = P2pkhAddress('mmYNBho9BWQB2dSniP1NJvnPoj5EVWw89w')
self.change_low_s_txout = TxOutput(Decimal('0.29'), self.change_low_s_addr.to_script_pub_key())
self.sk = PrivateKey('cRvyLwCPLU88jsyj94L7iJjQX5C2f8koG4G2gevN4BeSGcEvfKe9')
self.from_addr = P2pkhAddress('myPAE9HwPeKHh8FjKwBNBaHnemApo3dw6e')
self.core_tx_result = '02000000016cce96ffe999c7b2abc8b7bebec0c821e9c378ac41417106f6ddf63be2f448fb0000000000ffffffff0280969800000000001976a914fd337ad3bf81e086d96a68e1f8d6a0a510f8c24a88ac4081ba01000000001976a914c992931350c9ba48538003706953831402ea34ea88ac00000000'
self.core_tx_signed_result = '02000000016cce96ffe999c7b2abc8b7bebec0c821e9c378ac41417106f6ddf63be2f448fb000000006a473044022079dad1afef077fa36dcd3488708dd05ef37888ef550b45eb00cdb04ba3fc980e02207a19f6261e69b604a92e2bffdf6ddbed0c64f55d5003e9dfb58b874b07aef3d7012103a2fef1829e0742b89c218c51898d9e7cb9d51201ba2bf9d9e9214ebb6af32708ffffffff0280969800000000001976a914fd337ad3bf81e086d96a68e1f8d6a0a510f8c24a88ac4081ba01000000001976a914c992931350c9ba48538003706953831402ea34ea88ac00000000'
self.core_tx_signed_low_s_SIGALL_result = '02000000016cce96ffe999c7b2abc8b7bebec0c821e9c378ac41417106f6ddf63be2f448fb000000006a473044022044ef433a24c6010a90af14f7739e7c60ce2c5bc3eab96eaee9fbccfdbb3e272202205372a617cb235d0a0ec2889dbfcadf15e10890500d184c8dda90794ecdf79492012103a2fef1829e0742b89c218c51898d9e7cb9d51201ba2bf9d9e9214ebb6af32708ffffffff0280969800000000001976a914fd337ad3bf81e086d96a68e1f8d6a0a510f8c24a88ac4081ba01000000001976a91442151d0c21442c2b038af0ad5ee64b9d6f4f4e4988ac00000000'
self.core_tx_signed_low_s_SIGNONE_result = '02000000016cce96ffe999c7b2abc8b7bebec0c821e9c378ac41417106f6ddf63be2f448fb000000006b483045022100b4ef8ec12b39b21c4b5d57ce82c0c8762a8e9fbe5322a0f00bd5de0dba5152fe02203edb3128b6df0c891770e377fdc8be5b46a2eab16c63bf57507d075a98557236022103a2fef1829e0742b89c218c51898d9e7cb9d51201ba2bf9d9e9214ebb6af32708ffffffff0280969800000000001976a914fd337ad3bf81e086d96a68e1f8d6a0a510f8c24a88ac4081ba01000000001976a91442151d0c21442c2b038af0ad5ee64b9d6f4f4e4988ac00000000'
self.core_tx_signed_low_s_SIGNONE_txid = '76464c2b9e2af4d63ef38a77964b3b77e629dddefc5cb9eb1a3645b1608b790f'
# values for testing sighash single and sighash all/none/single with
# anyonecanpay
self.sig_txin1 = TxInput("76464c2b9e2af4d63ef38a77964b3b77e629dddefc5cb9eb1a3645b1608b790f", 0)
self.sig_txin2 = TxInput('76464c2b9e2af4d63ef38a77964b3b77e629dddefc5cb9eb1a3645b1608b790f', 1)
self.sig_from_addr1 = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
self.sig_from_addr2 = P2pkhAddress('mmYNBho9BWQB2dSniP1NJvnPoj5EVWw89w')
self.sig_sk1 = PrivateKey('cTALNpTpRbbxTCJ2A5Vq88UxT44w1PE2cYqiB3n4hRvzyCev1Wwo')
self.sig_sk2 = PrivateKey('cVf3kGh6552jU2rLaKwXTKq5APHPoZqCP4GQzQirWGHFoHQ9rEVt')
self.sig_to_addr1 = P2pkhAddress('myPAE9HwPeKHh8FjKwBNBaHnemApo3dw6e')
self.sig_txout1 = TxOutput(Decimal('0.09'), Script(['OP_DUP', 'OP_HASH160',
self.sig_to_addr1.to_hash160(),
'OP_EQUALVERIFY',
'OP_CHECKSIG']) )
self.sig_to_addr2 = P2pkhAddress('mmYNBho9BWQB2dSniP1NJvnPoj5EVWw89w')
self.sig_txout2 = TxOutput(Decimal('0.009'), Script(['OP_DUP', 'OP_HASH160',
self.sig_to_addr2.to_hash160(),
'OP_EQUALVERIFY',
'OP_CHECKSIG']) )
self.sig_sighash_single_result = '02000000010f798b60b145361aebb95cfcdedd29e6773b4b96778af33ed6f42a9e2b4c4676000000006a47304402202cfd7077fe8adfc5a65fb3953fa3482cad1413c28b53f12941c1082898d4935102201d393772c47f0699592268febb5b4f64dabe260f440d5d0f96dae5bc2b53e11e032102d82c9860e36f15d7b72aa59e29347f951277c21cd4d34822acdeeadbcff8a546ffffffff0240548900000000001976a914c3f8e5b0f8455a2b02c29c4488a550278209b66988aca0bb0d00000000001976a91442151d0c21442c2b038af0ad5ee64b9d6f4f4e4988ac00000000'
self.sign_sighash_all_2in_2out_result = '02000000020f798b60b145361aebb95cfcdedd29e6773b4b96778af33ed6f42a9e2b4c4676000000006b483045022100e30383d4006ef8b796ed397a81d2c55e6db3c05b370cb26179110816e57356e6022068fcd18a2a6984839a1fa7670693ed5c787da96589cd0f5ca81e3f11e613bd11012102d82c9860e36f15d7b72aa59e29347f951277c21cd4d34822acdeeadbcff8a546ffffffff0f798b60b145361aebb95cfcdedd29e6773b4b96778af33ed6f42a9e2b4c4676010000006a47304402206b728374b8879fd7a10cbd4f347934d583f4301aa5d592211487732c235b85b6022030acdc07761f227c27010bd022df4b22eb9875c65a59e8e8a5722229bc7362f4012102364d6f04487a71b5966eae3e14a4dc6f00dbe8e55e61bedd0b880766bfe72b5dffffffff0240548900000000001976a914c3f8e5b0f8455a2b02c29c4488a550278209b66988aca0bb0d00000000001976a91442151d0c21442c2b038af0ad5ee64b9d6f4f4e4988ac00000000'
self.sign_sighash_none_2in_2out_result = '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'
self.sign_sighash_single_2in_2out_result = '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'
self.sign_sighash_all_single_anyone_2in_2out_result = '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'
def test_unsigned_tx_1_input_2_outputs(self):
tx = Transaction([self.txin], [self.txout, self.change_txout])
self.assertEqual(tx.serialize(), self.core_tx_result)
def test_signed_tx_1_input_2_outputs(self):
tx = Transaction([self.txin], [self.txout, self.change_txout])
sig = self.sk.sign_input( tx, 0, Script(['OP_DUP', 'OP_HASH160',
self.from_addr.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG']) )
pk = self.sk.get_public_key().to_hex()
self.txin.script_sig = Script([sig, pk])
self.assertEqual(tx.serialize(), self.core_tx_signed_result)
def test_signed_low_s_SIGALL_tx_1_input_2_outputs(self):
tx = Transaction([self.txin], [self.txout, self.change_low_s_txout])
sig = self.sk.sign_input( tx, 0, self.from_addr.to_script_pub_key() )
pk = self.sk.get_public_key().to_hex()
self.txin.script_sig = Script([sig, pk])
self.assertEqual(tx.serialize(), self.core_tx_signed_low_s_SIGALL_result)
def test_signed_low_s_SIGNONE_tx_1_input_2_outputs(self):
tx = Transaction([self.txin], [self.txout, self.change_low_s_txout])
sig = self.sk.sign_input( tx, 0, Script(['OP_DUP', 'OP_HASH160',
self.from_addr.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG']),
SIGHASH_NONE)
pk = self.sk.get_public_key().to_hex()
self.txin.script_sig = Script([sig, pk])
# check correct raw tx
self.assertEqual(tx.serialize(),
self.core_tx_signed_low_s_SIGNONE_result)
# check correct calculation of txid
self.assertEqual(tx.get_txid(), self.core_tx_signed_low_s_SIGNONE_txid)
def test_signed_low_s_SIGSINGLE_tx_1_input_2_outputs(self):
tx = Transaction([self.sig_txin1], [self.sig_txout1, self.sig_txout2] )
sig = self.sig_sk1.sign_input( tx, 0,
self.sig_from_addr1.to_script_pub_key(),
SIGHASH_SINGLE)
pk = self.sig_sk1.get_public_key().to_hex()
self.sig_txin1.script_sig = Script([sig, pk])
self.assertEqual(tx.serialize(), self.sig_sighash_single_result)
def test_signed_SIGALL_tx_2in_2_out(self):
# note that this would have failed due to absurdly high fees but we
# ignore it for our purposes
tx = Transaction([self.sig_txin1, self.sig_txin2], [self.sig_txout1, self.sig_txout2] )
sig = self.sig_sk1.sign_input( tx, 0, Script(['OP_DUP', 'OP_HASH160',
self.sig_from_addr1.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG']),
SIGHASH_ALL)
sig2 = self.sig_sk2.sign_input( tx, 1, Script(['OP_DUP', 'OP_HASH160',
self.sig_from_addr2.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG']),
SIGHASH_ALL)
pk = self.sig_sk1.get_public_key().to_hex()
pk2 = self.sig_sk2.get_public_key().to_hex()
self.sig_txin1.script_sig = Script([sig, pk])
self.sig_txin2.script_sig = Script([sig2, pk2])
self.assertEqual(tx.serialize(), self.sign_sighash_all_2in_2out_result)
def test_signed_SIGNONE(self):
# note that this would have failed due to absurdly high fees but we
# ignore it for our purposes
tx = Transaction([self.sig_txin1, self.sig_txin2], [self.sig_txout1, self.sig_txout2] )
sig = self.sig_sk1.sign_input(tx, 0, Script(['OP_DUP', 'OP_HASH160',
self.sig_from_addr1.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG']),
SIGHASH_NONE)
sig2 = self.sig_sk2.sign_input(tx, 1, Script(['OP_DUP', 'OP_HASH160',
self.sig_from_addr2.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG']),
SIGHASH_NONE)
pk = self.sig_sk1.get_public_key().to_hex()
pk2 = self.sig_sk2.get_public_key().to_hex()
self.sig_txin1.script_sig = Script([sig, pk])
self.sig_txin2.script_sig = Script([sig2, pk2])
self.assertEqual(tx.serialize(), self.sign_sighash_none_2in_2out_result)
def test_signed_SIGSINGLE_tx_2in_2_out(self):
# note that this would have failed due to absurdly high fees but we
# ignore it for our purposes
tx = Transaction([self.sig_txin1, self.sig_txin2], [self.sig_txout1, self.sig_txout2] )
sig = self.sig_sk1.sign_input(tx, 0, Script(['OP_DUP', 'OP_HASH160',
self.sig_from_addr1.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG']),
SIGHASH_SINGLE)
sig2 = self.sig_sk2.sign_input(tx, 1, Script(['OP_DUP', 'OP_HASH160',
self.sig_from_addr2.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG']),
SIGHASH_SINGLE)
pk = self.sig_sk1.get_public_key().to_hex()
pk2 = self.sig_sk2.get_public_key().to_hex()
self.sig_txin1.script_sig = Script([sig, pk])
self.sig_txin2.script_sig = Script([sig2, pk2])
self.assertEqual(tx.serialize(), self.sign_sighash_single_2in_2out_result)
def test_signed_SIGALLSINGLE_ANYONEtx_2in_2_out(self):
# note that this would have failed due to absurdly high fees but we
# ignore it for our purposes
tx = Transaction([self.sig_txin1, self.sig_txin2], [self.sig_txout1, self.sig_txout2] )
sig = self.sig_sk1.sign_input(tx, 0, Script(['OP_DUP', 'OP_HASH160',
self.sig_from_addr1.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG']),
SIGHASH_ALL|SIGHASH_ANYONECANPAY)
sig2 = self.sig_sk2.sign_input(tx, 1,
self.sig_from_addr2.to_script_pub_key(),
SIGHASH_SINGLE|SIGHASH_ANYONECANPAY)
pk = self.sig_sk1.get_public_key().to_hex()
pk2 = self.sig_sk2.get_public_key().to_hex()
self.sig_txin1.script_sig = Script([sig, pk])
self.sig_txin2.script_sig = Script([sig2, pk2])
self.assertEqual(tx.serialize(),
self.sign_sighash_all_single_anyone_2in_2out_result)
def main():
#Connect to the regtest network
setup('regtest')
proxy = NodeProxy('user', 'bitcoin').get_proxy()
#Accept absolute future block amount User
current_blocks = proxy.getblockcount()
absolute_blocks = int(
input(
f'\nPlease input the future block height. The current block height is: {current_blocks}.\nIt must match the one in the redeem script from which the P2SH address (with the locked funds) was derived\n'
))
#Accept the Private Key from User
sk = PrivateKey(
input(
'\nPlease enter your Private Key (used to create the address from which the P2SH Address was derived)\n'
))
#Accept the P2SH Address with the funds
p2sh_addr = input(
'\nPlease enter the P2SH address which has the locked funds\n')
#Import the address into the wallet
proxy.importaddress(f'{p2sh_addr}')
print(
f'\nThe P2SH address {p2sh_addr} has been imported into the wallet.\n')
#Get all UTXOs for this address
all_utxos = proxy.listunspent(1, 9999999, [f'{p2sh_addr}'])
print(f'\nAll the UTXO Objects for this address are:\n{all_utxos}\n')
#Calculate total funds available. Aggregate all UTXO amounts.
def totalFunds():
total = Decimal(0)
for utxo in all_utxos:
total += Decimal(utxo["amount"])
return total
total_funds = totalFunds()
print("Total funds available: ", total_funds)
#Instantiate the timelock sequence
seq = Sequence(TYPE_ABSOLUTE_TIMELOCK, absolute_blocks)
#Create an array of inputs from these UTXOs
def getInputs():
inputs = []
count = 0
for utxo in all_utxos:
#create inputs and append them into an array
#First, create an input
utxo = all_utxos[count]
txin = TxInput(utxo["txid"],
utxo["vout"],
sequence=seq.for_input_sequence())
#then, append it to the array
inputs.append(txin)
++count
return inputs
inputs = getInputs()
print(f'The inputs created from these outputs are:\n {inputs}')
#Use User's Secret Key (Accepted above) to recreate the Public Key
pk = sk.get_public_key()
#We recreate the P2PKH Addr to recreate the other half of the redeemScript
p2pkh_addr = pk.get_address()
#We recreate the redeem script
redeem_script = Script([
absolute_blocks, 'OP_CHECKLOCKTIMEVERIFY', 'OP_DROP', 'OP_DUP',
'OP_HASH160',
p2pkh_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
#Confirm that the P2SH address is the same one to which funds were sent by receating the P2SH from this redeem script
addr = P2shAddress.from_script(redeem_script).to_string()
print(
f'\nCheck if this is the address with the locked funds:\n{addr} vs what you input above {p2sh_addr}'
)
#Accept the receiving P2PKH from User
destination_addr = P2pkhAddress(
input(
'\nPlease enter the address you want to send the locked funds to:\n'
))
#Calculate txn size to estimate fee from inputs only so we subtract it from funds
tx_test = Transaction(inputs, [],
Locktime(absolute_blocks).for_transaction())
tx_size = tx_test.get_size()
# 0.0001 is an appropriate fee per byte so we use that
est_tx_fee = tx_size / 1000 * 0.0001
#Create a txout transferring total locked funds (minus estimated fees).
txout = TxOutput(to_satoshis(total_funds - Decimal(est_tx_fee)),
destination_addr.to_script_pub_key())
#Create Txn. Passing in the inputs, output, and the future absolute lock time
tx = Transaction(inputs, [txout],
Locktime(absolute_blocks).for_transaction())
#Print the newly created txn
print(f'\nThe raw unsigned txn is: {tx.serialize()}\n')
#Calulate the Appropriate Transaction Fee According to Txn Size.
#First, get the fee estimate from network. Useful only for mainnet and testnet.
def getFee():
fee = proxy.estimatesmartfee(5, "ECONOMICAL")
if fee["errors"]:
print(
'Network data not enough to calculate fee. Setting default fee: 0.0001 BTC'
)
return 0.0001
else:
return fee["feerate"]
#Then, calculate the size of our Txn and then multiply it by the per-byte fee
est_fee = getFee() #per byte
tx_size = tx.get_size()
print(f'\nThe transaction size is:\n{tx_size} bytes')
tx_fee = tx_size / 1000 * est_fee
print(f'\nThe recommended fee for this transaction is:\n{tx_fee}')
#Need to sign all inputs
def signInputs():
input_index = 0
for input in inputs:
#Use the Secret Key corresponding to the P2SH to create the signature for the txn/ sign all inputs
#Redeem script is passed to replace the scriptSig
inputSig = sk.sign_input(tx, input_index, redeem_script)
input.script_sig = Script(
[inputSig, pk.to_hex(),
redeem_script.to_hex()])
++input_index
signInputs()
signed_tx = tx.serialize()
#Print the signed raw txn, ready to be checked for validity
print(f"\nRaw signed transaction:\n{signed_tx}")
print(
f"\nTransaction ready to be broadcast. Transaction Id: {tx.get_txid()}"
)
#Test for validity
isValid = proxy.testmempoolaccept([f'{signed_tx}'])
print(f'\nTransaction validity check result:\n{isValid}')
#Broadcast txn
#needs signed_tx
if isValid[0]["allowed"]:
if input('\nSend transaction to network? Y / N: ') == 'Y':
sent_tx_id = proxy.sendrawtransaction(f'{signed_tx}')
print(
f'\n***The transaction with id {sent_tx_id} has been sent to the network***'
)
else:
print(
f'\nUser decided not to send the funds and exited the program.'
)
exit()
else:
reason = isValid[0]["reject-reason"]
print(f'\nThe signed raw transaction is invalid. Reason: {reason}')
def main():
# always remember to setup the network
setup('testnet')
#
# This script spends from a P2SH address containing a CSV+P2PKH script as
# created from examples/create_p2sh_csv_p2pkh.py
#
# We assume that some 11.1 tBTC have been send to that address and that we know
# the txid and the specific UTXO index (or vout).
#
# set values
relative_blocks = 20
txid = '76c102821b916a625bd3f0c3c6e35d5c308b7c23e78b8866b06a3a466041db0a'
vout = 0
seq = Sequence(TYPE_RELATIVE_TIMELOCK, relative_blocks)
# create transaction input from tx id of UTXO (contained 11.1 tBTC)
txin = TxInput(txid, vout, sequence=seq.for_input_sequence())
# secret key needed to spend P2PKH that is wrapped by P2SH
p2pkh_sk = PrivateKey(
'cRvyLwCPLU88jsyj94L7iJjQX5C2f8koG4G2gevN4BeSGcEvfKe9')
p2pkh_pk = p2pkh_sk.get_public_key().to_hex()
p2pkh_addr = p2pkh_sk.get_public_key().get_address()
# create the redeem script - needed to sign the transaction
redeem_script = Script([
seq.for_script(), 'OP_CHECKSEQUENCEVERIFY', 'OP_DROP', 'OP_DUP',
'OP_HASH160',
p2pkh_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
# to confirm that address is the same as the one that the funds were sent
#addr = P2shAddress.from_script(redeem_script)
#print(addr.to_address())
# send/spend to any random address
to_addr = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
txout = TxOutput(11, to_addr.to_script_pub_key())
# no change address - the remaining 0.1 tBTC will go to miners)
# create transaction from inputs/outputs
tx = Transaction([txin], [txout])
# print raw transaction
print("\nRaw unsigned transaction:\n" + tx.serialize())
# use the private key corresponding to the address that contains the
# UTXO we are trying to spend to create the signature for the txin -
# note that the redeem script is passed to replace the scriptSig
sig = p2pkh_sk.sign_input(tx, 0, redeem_script)
#print(sig)
# set the scriptSig (unlocking script) -- unlock the P2PKH (sig, pk) plus
# the redeem script, since it is a P2SH
txin.script_sig = Script([sig, p2pkh_pk, redeem_script.to_hex()])
signed_tx = tx.serialize()
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n" + signed_tx)
print("\nTxId:", tx.get_txid())
def tip_or_withdrawFunc(update, ctx):
# Initialise bitcoin.py
setup('mainnet')
query = update.callback_query
chID = query.message.chat.id
msgID = query.message.message_id
query.answer()
data = str(query.data).split(",")
sender = str(query.from_user.id)
if sender == data[3]:
if data[4] == "t":
target = data[1]
if data[0] == "Y":
ctx.bot.delete_message(chat_id=chID, message_id=msgID)
sender_wif = PrivateKey(db.getWIF(sender))
fee = convertToSatoshis(Decimal(config.coin['minFee']))
target_address = P2wpkhAddress(getAddress(target))
sender_address = P2wpkhAddress(getAddress(sender))
sender_balance = 0
amount = convertToSatoshis(Decimal(data[2])) + fee
unspent = requests.get(
f"{config.apiUrl}/unspent/{sender_address.to_string()}"
).json()["result"]
txin = []
for i in range(0, len(unspent)):
sender_balance += unspent[i]['value']
txin.append(
TxInput(unspent[i]['txid'], unspent[i]['index']))
if sender_balance >= amount:
txout = []
txout.append(
TxOutput((amount - fee),
target_address.to_script_pub_key()))
txchange = sender_balance - amount
if txchange > 0:
txout.append(
TxOutput(txchange,
sender_address.to_script_pub_key()))
script_code = Script([
'OP_DUP', 'OP_HASH160',
sender_wif.get_public_key().to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
tx = Transaction(txin, txout, has_segwit=True)
tx.witnesses = []
for i in range(0, len(unspent)):
value = unspent[i]['value']
sig = sender_wif.sign_segwit_input(
tx, i, script_code, value)
tx.witnesses.append(
Script([sig,
sender_wif.get_public_key().to_hex()]))
post_data = {'raw': tx.serialize()}
txid = requests.post(f"{config.apiUrl}/broadcast",
data=post_data).json()['result']
ctx.bot.send_message(
chat_id=chID,
text=
f"Success, sent @{db.getUserName(data[1])} {data[2]} {config.coin['ticker']}."
)
ctx.bot.send_message(
chat_id=chID,
text=
f"[View Transaction](https://sugar\\.wtf/esplora/tx/{str(txid)})",
parse_mode="MarkdownV2")
else:
ctx.bot.send_message(
chat_id=chID,
text="You do not have enough funds to tip that amount")
elif data[0] == "N":
ctx.bot.delete_message(chat_id=chID, message_id=msgID)
ctx.bot.send_message(
chat_id=chID,
text=
f"You declined sending @{db.getUserName(data[1])} {data[2]} {config.coin['ticker']}"
)
elif data[4] == "w":
if data[0] == "Y":
ctx.bot.delete_message(chat_id=chID, message_id=msgID)
sender_wif = PrivateKey(db.getWIF(sender))
fee = convertToSatoshis(Decimal(config.coin['minFee']))
sender_address = P2wpkhAddress(getAddress(sender))
sender_balance = 0
amount = convertToSatoshis(Decimal(data[2])) + fee
target_address = P2wpkhAddress("sugar1q" + data[1])
unspent = requests.get(
f"{config.apiUrl}/unspent/{sender_address.to_string()}"
).json()['result']
txin = []
for i in range(0, len(unspent)):
sender_balance += unspent[i]['value']
txin.append(
TxInput(unspent[i]['txid'], unspent[i]['index']))
if sender_balance >= amount:
txout = []
txout.append(
TxOutput((amount - fee),
target_address.to_script_pub_key()))
txchange = sender_balance - amount
if txchange > 0:
txout.append(
TxOutput(txchange,
sender_address.to_script_pub_key()))
script_code = Script([
'OP_DUP', 'OP_HASH160',
sender_wif.get_public_key().to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
tx = Transaction(txin, txout, has_segwit=True)
tx.witnesses = []
for i in range(0, len(unspent)):
value = unspent[i]['value']
sig = sender_wif.sign_segwit_input(
tx, i, script_code, value)
tx.witnesses.append(
Script([sig,
sender_wif.get_public_key().to_hex()]))
post_data = {'raw': tx.serialize()}
txid = requests.post(f"{config.apiUrl}/broadcast",
data=post_data).json()['result']
ctx.bot.send_message(
chat_id=chID,
text=
f"Success, withdrew {data[2]} {config.coin['ticker']} to address {target_address.to_string()} "
)
ctx.bot.send_message(
chat_id=chID,
text=
f"[View Transaction](https://sugar\\.wtf/esplora/tx/{str(txid)})",
parse_mode="MarkdownV2")
else:
ctx.bot.send_message(
chat_id=chID,
text=
"You do not have enough funds to withdraw the specified amount."
)
elif data[0] == "N":
ctx.bot.delete_message(chat_id=chID, message_id=msgID)
ctx.bot.send_message(
chat_id=chID,
text=
f"You declined withdrawing {data[2]} {config.coin['ticker']} to address {'sugar1q' + data[1]}"
)
def tip_or_withdrawFunc(update, ctx):
# Initialise bitcoin.py
setup('mainnet')
query = update.callback_query
chID = query.message.chat.id
msgID = query.message.message_id
query.answer()
data = str(query.data).split(",")
sender = str(query.from_user.id)
chatid = query.message.chat_id
if sender == data[3]:
if data[4] == "t":
target = data[1]
if data[0] == "Y":
ctx.bot.delete_message(chat_id=chID, message_id=msgID)
sender_wif = PrivateKey(db.getWIF(sender))
fee = convertToSatoshis(Decimal(config.coin['minFee']))
#target_address = P2wpkhAddress(getAddress(target))
target_address = P2pkhAddress(getAddress(target))
#sender_address = P2wpkhAddress(getAddress(sender))
sender_address = P2pkhAddress(getAddress(sender))
sender_balance = 0
amount = convertToSatoshis(Decimal(data[2])) + fee
unspent = requests.get(
f"{config.apiUrl}/unspent/{sender_address.to_string()}"
).json()["result"]
txin = []
for i in range(0, len(unspent)):
sender_balance += unspent[i]['value']
txin.append(
TxInput(unspent[i]['txid'], unspent[i]['index']))
if sender_balance >= amount:
txout = []
txout = (TxOutput((amount - fee),
Script([
'OP_DUP', 'OP_HASH160',
target_address.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG'
])))
txchange = sender_balance - amount
if txchange > 0:
change_txout = (TxOutput(
txchange, sender_address.to_script_pub_key()))
script_code = Script([
'OP_DUP', 'OP_HASH160',
sender_wif.get_public_key().to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
tx = Transaction(txin, [txout, change_txout])
# get public key as hex
pk = sender_wif.get_public_key().to_hex()
sigpk = []
for i in range(0, len(unspent)):
value = unspent[i]['value']
sig = sender_wif.sign_input(
tx, i,
Script([
'OP_DUP', 'OP_HASH160',
sender_address.to_hash160(), 'OP_EQUALVERIFY',
'OP_CHECKSIG'
]))
sigpk.append(Script([sig, pk]))
txin[i].script_sig = sigpk[i]
#signed_tx = tx.serialize()
#print("\nRaw signed transaction:\n" + signed_tx)
#exit(0)
post_data = {'raw': tx.serialize()}
txid = requests.post(f"{config.apiUrl}/broadcast",
data=post_data).json()['result']
if checkRus(chatid):
ctx.bot.send_message(
chat_id=chID,
text=
f"Успешно, отправлено @{db.getUserName(data[1])} {data[2]} {config.coin['ticker']}."
)
ctx.bot.send_message(
chat_id=chID,
text=
f"[Детали транзакции](https://ytn.ccore.online/transaction/{str(txid)})",
parse_mode="MarkdownV2")
else:
ctx.bot.send_message(
chat_id=chID,
text=
f"Success, sent @{db.getUserName(data[1])} {data[2]} {config.coin['ticker']}."
)
ctx.bot.send_message(
chat_id=chID,
text=
f"[View Transaction](https://ytn.ccore.online/transaction/{str(txid)})",
parse_mode="MarkdownV2")
else:
if checkRus(chatid):
ctx.bot.send_message(
chat_id=chID,
text=
"У вас недостаточно средств, чтобы дать эту сумму чаевых"
)
else:
ctx.bot.send_message(
chat_id=chID,
text=
"You do not have enough funds to tip that amount")
elif data[0] == "N":
ctx.bot.delete_message(chat_id=chID, message_id=msgID)
if checkRus(chatid):
ctx.bot.send_message(
chat_id=chID,
text=
f"Вы отказались от отправки @{db.getUserName(data[1])} {data[2]} {config.coin['ticker']}"
)
else:
ctx.bot.send_message(
chat_id=chID,
text=
f"You declined sending @{db.getUserName(data[1])} {data[2]} {config.coin['ticker']}"
)
elif data[4] == "w":
if data[0] == "Y":
ctx.bot.delete_message(chat_id=chID, message_id=msgID)
sender_wif = PrivateKey(db.getWIF(sender))
fee = convertToSatoshis(Decimal(config.coin['minFee']))
#sender_address = P2wpkhAddress(getAddress(sender))
sender_address = P2pkhAddress(getAddress(sender))
sender_balance = 0
amount = convertToSatoshis(Decimal(data[2])) + fee
#target_address = P2wpkhAddress("ytn1q" + data[1])
#target = data[1]
target_address = P2pkhAddress("Y" + data[1])
unspent = requests.get(
f"{config.apiUrl}/unspent/{sender_address.to_string()}"
).json()['result']
txin = []
for i in range(0, len(unspent)):
sender_balance += unspent[i]['value']
txin.append(
TxInput(unspent[i]['txid'], unspent[i]['index']))
if sender_balance >= amount:
txout = []
txout = (TxOutput((amount - fee),
Script([
'OP_DUP', 'OP_HASH160',
target_address.to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG'
])))
txchange = sender_balance - amount
if txchange > 0:
change_txout = (TxOutput(
txchange, sender_address.to_script_pub_key()))
script_code = Script([
'OP_DUP', 'OP_HASH160',
sender_wif.get_public_key().to_hash160(),
'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
tx = Transaction(txin, [txout, change_txout])
# get public key as hex
pk = sender_wif.get_public_key().to_hex()
sigpk = []
for i in range(0, len(unspent)):
value = unspent[i]['value']
sig = sender_wif.sign_input(
tx, i,
Script([
'OP_DUP', 'OP_HASH160',
sender_address.to_hash160(), 'OP_EQUALVERIFY',
'OP_CHECKSIG'
]))
sigpk.append(Script([sig, pk]))
txin[i].script_sig = sigpk[i]
#signed_tx = tx.serialize()
#print("\nRaw signed transaction:\n" + signed_tx)
#exit(0)
post_data = {'raw': tx.serialize()}
txid = requests.post(f"{config.apiUrl}/broadcast",
data=post_data).json()['result']
if checkRus(chatid):
ctx.bot.send_message(
chat_id=chID,
text=
f"Успех, сняли {data[2]} {config.coin['ticker']} to address {target_address.to_string()} "
)
ctx.bot.send_message(
chat_id=chID,
text=
f"[Детали транзакции](https://ytn.ccore.online/transaction/{str(txid)})",
parse_mode="MarkdownV2")
else:
ctx.bot.send_message(
chat_id=chID,
text=
f"Success, withdrew {data[2]} {config.coin['ticker']} to address {target_address.to_string()} "
)
ctx.bot.send_message(
chat_id=chID,
text=
f"[View Transaction](https://ytn.ccore.online/transaction/{str(txid)})",
parse_mode="MarkdownV2")
else:
if checkRus(chatid):
ctx.bot.send_message(
chat_id=chID,
text=
"У вас недостаточно средств для вывода указанной суммы."
)
else:
ctx.bot.send_message(
chat_id=chID,
text=
"You do not have enough funds to withdraw the specified amount."
)
elif data[0] == "N":
ctx.bot.delete_message(chat_id=chID, message_id=msgID)
if checkRus(chatid):
ctx.bot.send_message(
chat_id=chID,
text=
f"Вы отказались снимать {data[2]} {config.coin['ticker']} to address {'Y' + data[1]}"
)
else:
ctx.bot.send_message(
chat_id=chID,
text=
f"You declined withdrawing {data[2]} {config.coin['ticker']} to address {'Y' + data[1]}"
)
# // LAB: Relative Timelock Example //
# 0. What is the type of network you working on? (mainnet / testnet)
# Always remember to setup the network before anything else.
setup('testnet')
# 1. Create a new private key
# Use secret_exponent parameter to get a non random private key
priv = PrivateKey(secret_exponent=1)
priv.to_wif()
priv.to_bytes() # 32 bytes = 32 * 8 bits = 256 bits
# 2a. Get the corresponding public Key
pub = priv.get_public_key()
pub.to_hex()
pub.to_hash160()
pub.to_bytes()
# 2b. Get the address that corresponds to that public key.
# The string representation of this address starts with m on n, because it is a Bitcoin testnet address
address = priv.get_public_key().get_address()
address.to_string()
address.to_hash160()
address._is_address_valid(address.to_string()) # True
address._is_address_valid(address.to_hash160()) # False
# 3. Create an input sequence for a relative timelock of 10 blocks.
# # Connect to testnet # setup( 'testnet' ) proxy = NodeProxy( USERNAME, PASSWORD_HASH ).get_proxy() # # 1) accept a future time, expressed either in block height or in UNIX Epoch time, # and a private key (to recreate the redeem script as above and also use to unlock the P2PKH part) # from_privkey = PrivateKey( 'cSyZjejfhK5gaVYoG9pgfdMrZzw7rXufpiG4oDaYShanJhwpqGcE' ) from_pubkey = from_privkey.get_public_key() from_address = from_pubkey.get_address() from_hash = from_address.to_hash160() redeem_script = Script( [BLOCKHEIGHT, 'OP_CHECKLOCKTIMEVERIFY', 'OP_DROP', 'OP_DUP', 'OP_HASH160', from_hash, 'OP_EQUALVERIFY', 'OP_CHECKSIG'] ) # # 2) accept a P2SH address to get the funds from (the one created by the first script) # from_p2sh = P2shAddress.from_script( redeem_script ) print( " source: " + from_p2sh.to_string() ) # # 3) check if the P2SH address has any UTXOs to get funds from #
def create_p2sh():
'''
This method creates a P2SH address containing a CHECKLOCKTIMEVERIFY plus
a P2PKH locking funds with a key up to specific blockchain height
Arguments:
pubKey: public key for the P2PKH part of the redeem script
lockBlocks: absolute lock (set to blockchain height)
Returns:
lock_block_height: the specific blockchain height lock (in blocks)
new_addr_privk: the private key of created P2SH address
p2sh_addr: the new P2SH address
'''
# Setup the network
setup('regtest')
# Initialize proxy for RPC calls
rpcuser = "******"
rpcpassword = "******"
rpc_con = AuthServiceProxy("http://%s:%[email protected]:18443" %
(rpcuser, rpcpassword))
# ***** Accept a public (or optionally a private) key for the P2PKH part of
# the redeem script
# Create a new Bitcoin Address (P2PKH)
# Call the node's getnewaddress JSON-RPC method
# Returns the address' Public Key
new_addr_pubk = rpc_con.getnewaddress()
# ***** Accept a future time expressed either in block height or in UNIX
# Epoch time
# Numbers of blockchain height corresponding to absolute lock time
lock_block_height = 103
# Get the corresponding private key from the wallet
# Call the node's dumpprivkey JSON-RPC method
new_addr_privk = rpc_con.dumpprivkey(new_addr_pubk)
# Get information about current blockchain height
# Call the node's getblockcount JSON-RPC method
current_block_height = rpc_con.getblockcount()
if (lock_block_height < current_block_height):
print(
'\n***BEWARE*** Given lock (%d blocks) is lower than current blockchain height (%d blocks)'
% (lock_block_height, current_block_height))
else:
print('Current blockchain height: %d blocks' % current_block_height)
print('Fund\'s lock is set to: %d blocks' % lock_block_height)
# Setting up an appropriate sequence to provide the script
seq = Sequence(TYPE_ABSOLUTE_TIMELOCK, lock_block_height)
# Secret key corresponding to the pubkey needed for the P2SH (P2PKH) transaction
p2pkh_sk = PrivateKey(new_addr_privk)
# Get the P2PKH address (from the public key)
p2pkh_addr = p2pkh_sk.get_public_key().get_address()
redeem_script = Script([
seq.for_script(), 'OP_CHECKLOCKTIMEVERIFY', 'OP_DROP', 'OP_DUP',
'OP_HASH160',
p2pkh_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
# Create a P2SH address from a redeem script
p2sh_addr = P2shAddress.from_script(redeem_script)
# VERY IMPORTANT: I must insert P2SH address into my wallet
rpc_con.importaddress(p2sh_addr.to_address())
# ***** Display the P2SH address
print(
'\nNewly created P2SH address with absolute lock set to %d blockchain height:'
% lock_block_height)
print(p2sh_addr.to_address())
return (lock_block_height, new_addr_privk, p2sh_addr.to_address())
class TestCreateP2shTransaction(unittest.TestCase):
def setUp(self):
setup('testnet')
self.txin = TxInput(
"76464c2b9e2af4d63ef38a77964b3b77e629dddefc5cb9eb1a3645b1608b790f",
0)
self.from_addr = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
self.sk = PrivateKey(
'cTALNpTpRbbxTCJ2A5Vq88UxT44w1PE2cYqiB3n4hRvzyCev1Wwo')
self.p2pk_sk = PrivateKey(
'cRvyLwCPLU88jsyj94L7iJjQX5C2f8koG4G2gevN4BeSGcEvfKe9')
self.p2pk_redeem_script = Script(
[self.p2pk_sk.get_public_key().to_hex(), 'OP_CHECKSIG'])
self.txout = TxOutput(to_satoshis(0.09),
self.p2pk_redeem_script.to_p2sh_script_pub_key())
self.create_p2sh_and_send_result = '02000000010f798b60b145361aebb95cfcdedd29e6773b4b96778af33ed6f42a9e2b4c4676000000006b483045022100fd3a3fd4aeec5db0f3f9c5c5ef7f60f37920be7464a80edacbc3b6b9d0624173022031ce309330e60b19d39cec8c5597460c840adcdd66f7dbbf896eef3ec42b472f012102d82c9860e36f15d7b72aa59e29347f951277c21cd4d34822acdeeadbcff8a546ffffffff01405489000000000017a9142910fc0b1b7ab6c9789c5a67c22c5bcde5b903908700000000'
self.txin_spend = TxInput(
'7db363d5a7fabb64ccce154e906588f1936f34481223ea8c1f2c935b0a0c945b',
0)
# self.p2pk_sk , self.p2pk_redeem_script from above
self.to_addr = self.from_addr
self.txout2 = TxOutput(to_satoshis(0.08),
self.to_addr.to_script_pub_key())
self.spend_p2sh_result = '02000000015b940c0a5b932c1f8cea231248346f93f18865904e15cecc64bbfaa7d563b37d000000006c47304402204984c2089bf55d5e24851520ea43c431b0d79f90d464359899f27fb40a11fbd302201cc2099bfdc18c3a412afb2ef1625abad8a2c6b6ae0bf35887b787269a6f2d4d01232103a2fef1829e0742b89c218c51898d9e7cb9d51201ba2bf9d9e9214ebb6af32708acffffffff0100127a00000000001976a914fd337ad3bf81e086d96a68e1f8d6a0a510f8c24a88ac00000000'
# P2SH(CSV+P2PKH)
self.sk_csv_p2pkh = PrivateKey(
'cRvyLwCPLU88jsyj94L7iJjQX5C2f8koG4G2gevN4BeSGcEvfKe9')
self.seq = Sequence(TYPE_RELATIVE_TIMELOCK, 200)
self.txin_seq = TxInput(
'f557c623e55f0affc696b742630770df2342c4aac395e0ed470923247bc51b95',
0,
sequence=self.seq.for_input_sequence())
self.another_addr = P2pkhAddress('n4bkvTyU1dVdzsrhWBqBw8fEMbHjJvtmJR')
self.spend_p2sh_csv_p2pkh_result = '0200000001951bc57b24230947ede095c3aac44223df70076342b796c6ff0a5fe523c657f5000000008a483045022100c123775e69ec27094f7940facb9ad769c09f48a7fc88250a2fce67bd92c9b4cf02204ebdbed84af46e584fe6db9a23c420b7370879e883b555e119465f84bf34d82f012103a2fef1829e0742b89c218c51898d9e7cb9d51201ba2bf9d9e9214ebb6af327081e02c800b27576a914c3f8e5b0f8455a2b02c29c4488a550278209b66988acc80000000100ab9041000000001976a914fd337ad3bf81e086d96a68e1f8d6a0a510f8c24a88ac00000000'
def test_signed_send_to_p2sh(self):
tx = Transaction([self.txin], [self.txout])
sig = self.sk.sign_input(tx, 0, self.from_addr.to_script_pub_key())
pk = self.sk.get_public_key().to_hex()
self.txin.script_sig = Script([sig, pk])
self.assertEqual(tx.serialize(), self.create_p2sh_and_send_result)
def test_spend_p2sh(self):
tx = Transaction([self.txin_spend], [self.txout2])
sig = self.p2pk_sk.sign_input(tx, 0, self.p2pk_redeem_script)
self.txin_spend.script_sig = Script(
[sig, self.p2pk_redeem_script.to_hex()])
self.assertEqual(tx.serialize(), self.spend_p2sh_result)
def test_spend_p2sh_csv_p2pkh(self):
redeem_script = Script([
self.seq.for_script(), 'OP_CHECKSEQUENCEVERIFY', 'OP_DROP',
'OP_DUP', 'OP_HASH160',
self.sk_csv_p2pkh.get_public_key().to_hash160(), 'OP_EQUALVERIFY',
'OP_CHECKSIG'
])
txout = TxOutput(to_satoshis(11),
self.another_addr.to_script_pub_key())
tx = Transaction([self.txin_seq], [txout])
sig = self.sk_csv_p2pkh.sign_input(tx, 0, redeem_script)
self.txin_seq.script_sig = Script([
sig,
self.sk_csv_p2pkh.get_public_key().to_hex(),
redeem_script.to_hex()
])
self.assertEqual(tx.serialize(), self.spend_p2sh_csv_p2pkh_result)
def buy_lambo(key, lock, from_addr, to_addr):
setup(os.getenv("BUY_LAMBO_BTC_NET", "regtest"))
# Create a proxy to JSON-RPC api
chain = NodeProxy(os.getenv("BUY_LAMBO_RPC_USER", "rpcuser"),
os.getenv("BUY_LAMBO_RPC_PASSWORD",
"rpcpassword")).get_proxy()
# Try executing a command to see if node is running
try:
chain.getblockcount()
except Exception:
print("Error: Node isn't working!")
return
# Check addresses
if not chain.validateaddress(from_addr)["isvalid"]:
print("Error: `from_addr` is not a valid address!")
return
if not chain.validateaddress(to_addr)["isvalid"]:
print("Error: `to_addr` is not a valid address!")
return
# Set lock sequence prefix
seq = Sequence(TYPE_ABSOLUTE_TIMELOCK, lock)
# Get public key (found from private key)
private_key = PrivateKey(key)
public_key = private_key.get_public_key()
# Add address to wallet so we can get utxos from bitcoin core
chain.importaddress(from_addr)
# Get UTXOs
utxos = chain.listunspent(1, 9999999, [from_addr])
# Create inputs
txin = []
total_btc = Decimal(0)
for utxo in utxos:
# Note that for each input we set the correct nSequence
txin.append(
TxInput(utxo["txid"],
utxo["vout"],
sequence=seq.for_input_sequence()))
total_btc = total_btc + utxo["amount"]
if total_btc == 0:
return print("\nThere aren't any UTXOs :(.")
# Create a fee-less output
txout = TxOutput(total_btc - Decimal(0.1),
P2pkhAddress(to_addr).to_script_pub_key())
# Create dummy transaction (to calculate size)
tx = Transaction([TxInput.copy(inpt) for inpt in txin], [txout],
locktime=Locktime(lock).for_transaction())
# create the redeem script - needed to sign the transaction
redeem_script = Script([
seq.for_script(),
"OP_CHECKLOCKTIMEVERIFY",
"OP_DROP",
"OP_DUP",
"OP_HASH160",
public_key.get_address().to_hash160(),
"OP_EQUALVERIFY",
"OP_CHECKSIG",
])
# use the private key corresponding to the address that contains the
# UTXO we are trying to spend to create the signature for the txin -
# note that the redeem script is passed to replace the scriptSig
for ind, txinput in enumerate(tx.inputs):
sig = private_key.sign_input(tx, ind, redeem_script)
txinput.script_sig = Script(
[sig, public_key.to_hex(),
redeem_script.to_hex()])
# Calculate fees
sat_per_byte = requests.get(
"https://bitcoinfees.earn.com/api/v1/fees/recommended").json(
)["fastestFee"]
fee = Decimal(
max((len(bytes.fromhex(tx.serialize())) * sat_per_byte) /
SATOSHIS_PER_BITCOIN, 0))
if fee == 0:
print("WARNING: There isn't enough balance to calculate fees.")
# Create final tx with correct txout value
txout = TxOutput(total_btc - fee,
P2pkhAddress(to_addr).to_script_pub_key())
tx = Transaction([TxInput.copy(inpt) for inpt in tx.inputs], [txout],
locktime=Locktime(lock).for_transaction())
for ind, txinput in enumerate(tx.inputs):
sig = private_key.sign_input(tx, ind, redeem_script)
txinput.script_sig = Script(
[sig, public_key.to_hex(),
redeem_script.to_hex()])
signed_tx = tx.serialize()
# print raw transaction
print("\nRaw unsigned transaction:\n{}".format(
Transaction(txin, [txout]).serialize()))
# print raw signed transaction ready to be broadcasted
print("\nRaw signed transaction:\n{}".format(signed_tx))
print("\nTxId: {}".format(tx.get_txid()))
# Check if is valid and send it
if chain.testmempoolaccept([signed_tx])[0]["allowed"]:
chain.sendrawtransaction(signed_tx)
print("\nSent to Block-chain! Have fun with those {} BTC.".format(
total_btc - fee))
else:
print("\nCan't send (yet)!")
print("Reason: `{}`".format(
chain.testmempoolaccept([signed_tx])[0]["reject-reason"]))
