def createTxState(tx_in: TxInput, pubkey_left: PublicKey, pubkey_right: PublicKey,
pubkey_pay_right: PublicKey,
pubkey_mulsig_left: PublicKey, pubkey_mulsig_right: PublicKey,
lock_val: float, left_val: float, right_val: float, T: int, delta: int) -> Transaction:
"""
Move coins from left user balance to a new "lock" output.
Before: 'a' coins to L, 'b' coins to R.
After: 'a - c' coins to L, 'b' coins to R, 'c' coins locked.
:param tx_in: reference to channel open transaction
:param pubkey_left: public key owned by left user to receive his coins from channel
:param pubkey_right: public key owned by right user to receive his coins from channel
:param pubkey_pay_right: public key owned by right user for payment after time T
:param pubkey_mulsig_left: public key owned by left user for refund if enable-refund tx is published
:param pubkey_mulsig_right: public key owned by right user for refund if enable-refund tx is published
:param lock_val: amount of coins to lock: 'c'
:param left_val: coins or left user: '******'
:param right_val: coins or right user: '******'
:param T: locked funds can pe paid after this time wherever right user wants
:param delta: upper bound on time for transaction to be confirmed by the network
:return: tx_state
"""
out_lock_script = getTxStateLockScript(T, delta, pubkey_pay_right, pubkey_mulsig_left, pubkey_mulsig_right)
tx_out_lock = TxOutput(lock_val, out_lock_script)
tx_out_left = TxOutput(left_val, P2pkhAddress(pubkey_left.get_address().to_string()).to_script_pub_key())
tx_out_right = TxOutput(right_val, P2pkhAddress(pubkey_right.get_address().to_string()).to_script_pub_key())
tx = Transaction([tx_in], [tx_out_lock, tx_out_left, tx_out_right])
return tx
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 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 btc_payment(source_address, outputs, fee_satoshi_kb, network='mainnet'):
try:
setup(network)
outputs_list = []
p2sh_num = 0
p2pkh_num = 0
total_amount_to_spend = _calculate_total_amount(outputs)
print(total_amount_to_spend)
txin = []
utxo_amount = 0
for address, value in outputs.items():
addr_type = _check_address_type(address)
addr = ''
if addr_type is P2PKH_ADDRESS:
addr = P2pkhAddress(address)
txout = TxOutput(
Decimal(value) / Decimal(SATOSHIS_PER_BITCOIN),
Script([
'OP_DUP', 'OP_HASH160',
addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
]))
outputs_list.append(txout)
p2pkh_num += 1
elif addr_type is P2SH_ADDRESS:
addr = P2shAddress(address)
txout = TxOutput(
Decimal(value) / Decimal(SATOSHIS_PER_BITCOIN),
Script(['OP_HASH160',
addr.to_hash160(), 'OP_EQUAL']))
outputs_list.append(txout)
p2sh_num += 1
utxo_set, fee = _get_unspent_transactions(source_address,
total_amount_to_spend,
p2pkh_num, p2sh_num,
fee_satoshi_kb)
for utxo in utxo_set:
txin.append(TxInput(utxo['txid'], utxo['vout']))
utxo_amount += utxo['amount']
change = utxo_amount - fee - total_amount_to_spend
change_addr = P2pkhAddress(source_address)
change_txout = TxOutput(
Decimal(change) / Decimal(SATOSHIS_PER_BITCOIN),
Script([
'OP_DUP', 'OP_HASH160',
change_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
]))
outputs_list.append(change_txout)
tx = Transaction(txin, outputs_list)
return tx.serialize(), utxo_set
except UnspentTransactionsError:
raise UnspentTransactionsError
except:
raise BtcPaymentError("Problem during creation of raw transaction")
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')
# 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 send_to_p2wpkh(amount_to_send, fee):
transaction = Transaction([], [])
addr = BOB.public_key.get_segwit_address()
from_addr = P2pkhAddress(BOB.public_key.get_address().to_string())
print(from_addr.to_hash160())
for i in range(len(utxos)):
txin = TxInput(utxos[i][0], utxos[i][1])
# sk = PrivateKey('cTALNpTpRbbxTCJ2A5Vq88UxT44w1PE2cYqiB3n4hRvzyCev1Wwo')
# print(sk.get_public_key().get_address().to_string())
# print(alice_public_key_BTC.get_address().to_string())
transaction.inputs.append(txin)
for i in range(0, 10):
txout = TxOutput(to_satoshis((amount_to_send - fee) / 10),
addr.to_script_pub_key())
transaction.outputs.append(txout)
# txout = TxOutput(to_satoshis(0.425/2), POOL.p2pkh_script_pubkey("btc-test3"))
# transaction.outputs.append(txout)
for i in range(len(utxos)):
sig = BOB.secret_key.sign_input(
transaction, i,
Script([
'OP_DUP', 'OP_HASH160',
from_addr.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
]))
transaction.inputs[i].script_sig = Script([
sig, BOB.public_key.to_hex()
]) # , BOB.p2pkh_script_pubkey().to_hex()])
# transaction = Transaction([txin], [txout])
# print(txin.script_sig.to_bytes())
return transaction
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 create_spending_signed_trx(p2pkh_addr_to_str, priv_key_from_obj):
"""
Gather related data and generate
the single transation that transfers the btc value of the
found UTXO transactions.
"""
p2pkh_addr_to_obj = P2pkhAddress(p2pkh_addr_to_str)
seq_number_in_hex = Common.get_seq_hex_from_conf(
Common.get_relative_time_seconds_blocks())
redeem_script = Common.get_redeem_script_from_conf(
get_redeem_pub_key_obj())
p2sh_paid_to_addr = P2shAddress.from_script(redeem_script).to_address()
utxo_results = get_input_trx_from_utxo(priv_key_from_obj,
p2sh_paid_to_addr, seq_number_in_hex, redeem_script)
# No sense in creating a transaction with 0 UTXOs
if utxo_results[0] > 0 and len(utxo_results[1]) > 0:
signed_tx = get_signed_trx(utxo_results, p2pkh_addr_to_obj,
priv_key_from_obj, redeem_script)
# print raw signed transaction ready to be broadcasted
print("\nSigned raw transaction:\n" + signed_tx)
trasmit_finalized_trx(signed_tx)
else:
print("\nNo UTXOs found. Nothing to do!\n")
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 get_function2_p2pkh_addr_to_from_conf(function2_conf_section):
p2pkh_addr_to_str = Common.get_config_value(function2_conf_section,
'P2PKH_Addr')
p2pkh_addr_to = P2pkhAddress(p2pkh_addr_to_str)
return p2pkh_addr_to
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')
# create transaction input from tx id of UTXO (contained 0.4 tBTC)
txin = TxInput(
'41c0c1b9aff5d2608a00dd458120b86b38b26a19bb80a4085e0e868e4be0941a', 0)
# create transaction output using P2PKH scriptPubKey (locking scrip
addr = P2pkhAddress('2NCpHygg5xJ4FJr3p8gpEzyZtX6R8JxNbZF')
def _tx_encf(self, vk_p, ct_c, sk_u, txin_id, txin_index):
# create transaction input from tx id of UTXO
txin = TxInput(txin_id, txin_index)
# having the vk_p from the shared key generate the corresponding address for decoder to use to respond
vk_p = PublicKey(vk_p)
addr_p = vk_p.get_address().to_string()
# create transaction output using P2PKH scriptPubKey for paying address
paying_addr = P2pkhAddress(addr_p)
paying_txout = TxOutput(0.00002, paying_addr.to_script_pub_key())
# create an output where the address is the ciphertext
cipher_txout = TxOutput(0.00001,
Script(['OP_HASH160', ct_c, 'OP_EQUAL']))
# create transaction from inputs/outputs -- default locktime is used
tx = Transaction([txin], [paying_txout, cipher_txout])
#print("\nRaw unsigned transaction:\n" + tx.serialize())
# use private key corresponding to the address that contains the UTXO we are trying to spend to sign the input
vk_u = sk_u.get_public_key()
addr_u = vk_u.get_address().to_string()
# 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(addr_u)
sig = sk_u.sign_input(
tx, 0,
from_addr.to_script_pub_key()) # 0 is for the index of the input
# set the scriptSig (unlocking script)
vk_u = vk_u.to_hex()
txin.script_sig = Script([sig, vk_u])
signed_tx = tx.serialize()
print("Users input address: ", addr_u)
print("Decoder paying address: ", addr_p)
print("\nRaw signed transaction:\n" + signed_tx)
return signed_tx
def revoke_address(conf, interactive=False):
# initialize full node connection
if(conf.testnet):
setup('testnet')
else:
setup('mainnet')
address = P2pkhAddress(conf.issuing_address).to_hash160()
op_return_bstring = cred_protocol.revoke_address_cmd(address)
revoked_txid = publish_hash.issue_op_return(conf, op_return_bstring)
if interactive:
print('\nTx hash: {}'.format(revoked_txid))
else:
return revoked_txid
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 = '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'
self.sign_sighash_none_2in_2out_result = '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'
self.sign_sighash_single_2in_2out_result = '02000000020f798b60b145361aebb95cfcdedd29e6773b4b96778af33ed6f42a9e2b4c4676000000006a47304402206118d21952932deb8608f772017fe76827ccdc8b750ead0f5636429ab5883a6802207f6ded77e22785b0e6c682c05260c2e073d1e1522d4c02fb78df6cdd2862e853032102d82c9860e36f15d7b72aa59e29347f951277c21cd4d34822acdeeadbcff8a546ffffffff0f798b60b145361aebb95cfcdedd29e6773b4b96778af33ed6f42a9e2b4c4676010000006a47304402205012090ddf07ee2e7767020f09224001360243f8dbe05c5011c54eed9fb90d4802203358e227c891f609c3baf98d975d9ee72666fb511c808419d24ec5cccaf3938e032102364d6f04487a71b5966eae3e14a4dc6f00dbe8e55e61bedd0b880766bfe72b5dffffffff0240548900000000001976a914c3f8e5b0f8455a2b02c29c4488a550278209b66988aca0bb0d00000000001976a91442151d0c21442c2b038af0ad5ee64b9d6f4f4e4988ac00000000'
self.sign_sighash_all_single_anyone_2in_2out_result = '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'
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("cVdte9ei2xsVjmZSPtyucG43YZgNkmKTqhwiUA8M4Fc3LdPJxPmZ")
pub = priv.get_public_key()
fromAddress = pub.get_segwit_address()
print(fromAddress.to_string())
# amount is needed to sign the segwit input
fromAddressAmount = to_satoshis(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 script code required for signing for p2wpkh is the same as p2pkh
script_code = Script([
'OP_DUP', 'OP_HASH160',
pub.to_hash160(), 'OP_EQUALVERIFY', 'OP_CHECKSIG'
])
# create transaction output
txOut = TxOutput(to_satoshis(0.009), toAddress.to_script_pub_key())
# create transaction without change output - if at least a single input is
# segwit we need to set has_segwit=True
tx = Transaction([txin], [txOut], has_segwit=True)
print("\nRaw transaction:\n" + tx.serialize())
sig = priv.sign_segwit_input(tx, 0, script_code, 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')
# 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():
# always remember to setup the network
setup('regtest')
# create transaction input from tx id of UTXO (contained 0.4 tBTC)
txin = TxInput('4d9a6baf45d4b57c875fe83d5e0834568eae4b5ef6e61d13720ef6685168e663', 0)
# provide unlocking script
# note that no signing is required to unlock: OP_ADD OP_5 OP_EQUAL
txin.script_sig = Script(['OP_2', 'OP_3'])
# create transaction output using P2PKH scriptPubKey (locking script)
addr = P2pkhAddress('mrCDrCybB6J1vRfbwM5hemdJz73FwDBC8r')
# locking script expects 2 numbers that when added equal 5 (silly example)
txout = TxOutput( 0.8, addr.to_script_pub_key() )
# create transaction from inputs/outputs -- default locktime is used
tx = Transaction([txin], [txout])
# print raw transaction
print("\nRaw transaction:\n" + tx.serialize())
def _tx_encb(self, sk_s, ct_r, txin_id, txin_index):
# create transaction input from tx id of UTXO
txin = TxInput(txin_id, txin_index)
# create an output where the address is the ciphertext[0:20]
cipher1_txout = TxOutput(
0.000001,
Script([
'OP_DUP', 'OP_HASH160', ct_r[:40], 'OP_EQUALVERIFY',
'OP_CHECKSIG'
]))
# create another output where the address is the ciphertext[20:40]
cipher2_txout = TxOutput(0.000001,
Script(['OP_HASH160', ct_r[40:], 'OP_EQUAL']))
# create transaction from inputs/outputs -- default locktime is used
tx = Transaction([txin], [cipher1_txout, cipher2_txout])
#print("\nRaw unsigned transaction:\n" + tx.serialize())
# use private key corresponding to the address that contains the UTXO we are trying to spend to sign the input
vk_p = sk_s.get_public_key()
addr_p = vk_p.get_address().to_string()
# 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(addr_p)
sig = sk_s.sign_input(tx, 0, from_addr.to_script_pub_key())
# set the scriptSig (unlocking script)
vk_p = vk_p.to_hex()
txin.script_sig = Script([sig, vk_p])
signed_tx = tx.serialize()
print("\nRaw signed transaction:\n" + signed_tx)
return signed_tx
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 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 validate_certificate(cert, issuer_identifier, testnet,
blockchain_services):
filename = os.path.basename(cert)
tmp_filename = '__' + filename
shutil.copy(cert, tmp_filename)
issuer_address = get_issuer_address(tmp_filename)
proof = get_and_remove_chainpoint_proof(tmp_filename)
if proof == None:
os.remove(tmp_filename)
return False, "no chainpoint_proof in metadata"
# get the hash after removing the metadata
filehash = ''
with open(tmp_filename, 'rb') as pdf_file:
filehash = hashlib.sha256(pdf_file.read()).hexdigest()
# instantiate chainpoint object
cp = ChainPointV2()
txid = cp.get_txid_from_receipt(proof)
# make request to get txs regarding this address
# issuance is the first element of data_before_issuance
data_before_issuance, data_after_issuance = \
network_utils.get_all_op_return_hexes(issuer_address, txid,
blockchain_services, testnet)
# validate receipt
valid, reason = cp.validate_receipt(proof, data_before_issuance[0],
filehash, issuer_identifier, testnet)
# display error except when the certificate expired; this is because we want
# revoked certificate error to be displayed before cert expired error
# TODO clean hard-coded reason
if not valid and not reason.startswith("certificate expired"):
return False, reason
# set bitcoin network (required for addr->pkh in revoke address)
if testnet:
setup('testnet')
else:
setup('mainnet')
# check if cert's issuance is after a revoke address cmd on that address
# and if yes then the issuance is invalid (address was revoked)
# we check before checking for cert revocations since if the issuance was
# after an address revocation it should show that as an invalid reason
# 0 index is the actual issuance -- ignore it
for i in range(len(data_before_issuance))[1:]:
cred_dict = cred_protocol.parse_op_return_hex(data_before_issuance[i])
if cred_dict:
if cred_dict['cmd'] == cred_protocol.hex_op('op_revoke_address'):
issuer_pkh = P2pkhAddress(issuer_address).to_hash160()
if issuer_pkh == cred_dict['data']['pkh']:
return False, "address was revoked"
# check if cert or batch was revoked from oldest to newest
for op_return in reversed(data_after_issuance):
cred_dict = cred_protocol.parse_op_return_hex(op_return)
if cred_dict:
if cred_dict['cmd'] == cred_protocol.hex_op('op_revoke_batch'):
if txid == cred_dict['data']['txid']:
return False, "batch was revoked"
elif cred_dict['cmd'] == cred_protocol.hex_op('op_revoke_creds'):
if txid == cred_dict['data']['txid']:
# compare the certificate hash bytes
filehash_bytes = utils.hex_to_bytes(filehash)
ripemd_filehash = utils.ripemd160(filehash_bytes)
ripemd_hex = utils.bytes_to_hex(ripemd_filehash)
if ripemd_hex == cred_dict['data']['hashes'][0]:
return False, "cert hash was revoked"
if len(cred_dict['data']['hashes']) > 1:
if ripemd_hex == cred_dict['data']['hashes'][1]:
return False, "cert hash was revoked"
elif cred_dict['cmd'] == cred_protocol.hex_op('op_revoke_address'):
# if address revocation is found stop looking since all other
# revocations will be invalid
issuer_pkh = P2pkhAddress(issuer_address).to_hash160()
if issuer_pkh == cred_dict['data']['pkh']:
break
# if not revoked but not valid this means that it was expired; now that we
# checked for revocations we can show the expiry error
if not valid:
return False, reason
# now that the issuer (anchoring) was validated validate the certificate
# with the owner's public key (vpdf v2)
# get owner and owner_proof removing the latter
owner, owner_proof = get_owner_and_remove_owner_proof(tmp_filename)
if owner:
# get public key
pk = PublicKey.from_hex(owner['pk'])
# get file hash
sha256_hash = None
with open(tmp_filename, 'rb') as pdf:
sha256_hash = hashlib.sha256(pdf.read()).hexdigest()
# cleanup now that we got original filehash
os.remove(tmp_filename)
# finally check if owner signature is valid
#print(pk.get_address().to_string(), pk.to_hex(), sha256_hash, owner_proof)
try:
if (pk.verify(owner_proof, sha256_hash)):
pass
except Exception: #BadSignatureError:
return False, 'owner signature could not be validated'
# in a valid credential the reason could contain an expiry date
return True, reason
def issue_op_return(conf, op_return_bstring, interactive=False):
op_return_hex = binascii.hexlify(op_return_bstring).decode()
if interactive:
print('\nConfigured values are:\n')
print('working_directory:\t{}'.format(conf.working_directory))
print('issuing_address:\t{}'.format(conf.issuing_address))
print('full_node_url:\t\t{}'.format(conf.full_node_url))
print('full_node_rpc_user:\t{}'.format(conf.full_node_rpc_user))
print('testnet:\t\t{}'.format(conf.testnet))
print('tx_fee_per_byte:\t{}'.format(conf.tx_fee_per_byte))
print('Bytes for OP_RETURN:\n{}'.format(op_return_bstring))
print('Hex for OP_RETURN:\n{}'.format(op_return_hex))
op_return_cert_protocol = op_return_hex
if interactive:
consent = input('Do you want to continue? [y/N]: ').lower() in ('y', 'yes')
if not consent:
sys.exit()
# test explicitly when non interactive
if not conf.full_node_rpc_password and interactive:
conf.full_node_rpc_password = getpass.getpass('\nPlease enter the password for the node\'s RPC user: '******'testnet')
else:
setup('mainnet')
host, port = conf.full_node_url.split(':') # TODO: update when NodeProxy accepts full url!
proxy = NodeProxy(conf.full_node_rpc_user, conf.full_node_rpc_password,
host, port).get_proxy()
# create transaction
tx_outputs = []
unspent = sorted(proxy.listunspent(1, 9999999, [conf.issuing_address]),
key=lambda x: x['amount'], reverse=False)
if not unspent:
raise ValueError("No UTXOs found")
issuing_pubkey = proxy.getaddressinfo(conf.issuing_address)['pubkey']
tx = None
tx_inputs = []
inputs_amount = 0
# coin selection: use smallest UTXO and if not enough satoshis add next
# smallest, etc. until sufficient tx fees are accumulated
# TODO wrt dust instead of adding another UTXO we should just remove the
# change_output and allocate the remaining (<546sats) to fees
for utxo in unspent:
txin = TxInput(utxo['txid'], utxo['vout'])
tx_inputs.append(txin)
inputs_amount += utxo['amount']
change_script_out = P2pkhAddress(conf.issuing_address).to_script_pub_key()
change_output = TxOutput(inputs_amount, change_script_out)
op_return_output = TxOutput(0, Script(['OP_RETURN', op_return_cert_protocol]))
tx_outputs = [ change_output, op_return_output ]
tx = Transaction(tx_inputs, tx_outputs)
# sign transaction to get its size
r = proxy.signrawtransactionwithwallet(tx.serialize())
if r['complete'] == None:
if interactive:
sys.exit("Transaction couldn't be signed by node")
else:
raise RuntimeError("Transaction couldn't be signed by node")
signed_tx = r['hex']
signed_tx_size = len(signed_tx)
# calculate fees and change
tx_fee = (signed_tx_size // 2 + 1) * conf.tx_fee_per_byte
# TODO number_to_decimal8 is temporary here.. should used bitcoin
# library instead
change_amount = inputs_amount - number_to_decimal8(tx_fee / 100000000)
# the default Bitcoin Core node doesn't allow the creation of dust UTXOs
# https://bitcoin.stackexchange.com/questions/10986/what-is-meant-by-bitcoin-dust
# if change is less than 546 satoshis that is considered dust (with the
# default node parameters) then include another UTXO
if change_amount >= 0.00000550:
break
if(change_amount < 0):
if interactive:
sys.exit("Specified address cannot cover the transaction fee of: {} satoshis".format(tx_fee))
else:
raise RuntimeError("insufficient satoshis, cannot create transaction")
# update tx out for change and re-sign
tx.outputs[0].amount = change_amount
r = proxy.signrawtransactionwithwallet(tx.serialize())
if r['complete'] == None:
if interactive:
sys.exit("Transaction couldn't be signed by node")
else:
raise RuntimeError("Transaction couldn't be signed by node")
signed_tx = r['hex']
# send transaction
if interactive:
print('The fee will be {} satoshis.\n'.format(tx_fee))
consent = input('Do you want to issue on the blockchain? [y/N]: ').lower() in ('y', 'yes')
if not consent:
sys.exit()
tx_id = proxy.sendrawtransaction(signed_tx)
return tx_id
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())
def load_data_json(priv=False,
pub=False,
pub_hash=False,
timelock_csv=False,
timelock_tx=False,
timelock_log=False,
p2pk=False):
"""loads parameters used to create P2SH address and spending transactions
from the data.json file - initiates/converts applicable objects/data
returns : dict of data for the Attributes specified
- e.g {'priv_key': object, 'pub': object, 'pub_hash': 'string'}
"""
# reads user data from data.json
with open('data.json', 'r') as json_file:
data = json.load(json_file)
usr_inputs = data['csv_timelock']['inputs']
# initiates key objects
if priv or pub or pub_hash:
usr_priv = usr_inputs['priv_key']
usr_pub = usr_inputs['pub_key']
if priv and not usr_priv:
errors.missing_data('private key')
elif usr_priv:
priv_key = PrivateKey.from_wif(usr_priv)
pub_key = priv_key.get_public_key()
elif usr_pub:
pub_key = PublicKey.from_hex(usr_pub)
else:
# prints error msg & raises systemExit
errors.missing_data('public key')
# loads timelock condition and converts format
if timelock_csv or timelock_tx or timelock_log:
lock_height = usr_inputs['block_lock']
if lock_height:
seq = Sequence(TYPE_RELATIVE_TIMELOCK, lock_height)
timelock_script = seq.for_script()
timelock_txin = seq.for_input_sequence()
else:
# prints error msg & raises systemExit
errors.missing_data('timelock period')
# initaites P2pkhAddress object
if p2pk:
address = usr_inputs['p2pkh_address']
if address:
p2pkh_address = P2pkhAddress.from_address(address)
else:
# prints error msg & raises systemExit
errors.missing_data('P2PKH address')
# fills return outputs with specified data from func arguments
outputs = {}
if priv:
outputs['priv_key'] = priv_key
if pub:
outputs['pub_key'] = pub_key
if pub_hash:
outputs['pub_key_hash'] = pub_key.to_hash160()
if timelock_csv:
outputs['timelock_csv'] = timelock_script
if timelock_tx:
outputs['timelock_tx'] = timelock_txin
if timelock_log:
outputs['timelock_log'] = lock_height
if p2pk:
outputs['p2pk_addr'] = p2pkh_address
return outputs
# - Input (the previous transaction)
# - Output (sent the funcds in the new address)
# 12. Use as input the output of the transaction you submitted to the blockchain earlier.
txid_2
proxy.gettransaction()
help(TxInput)
txin = TxInput(txid=txid_2, txout_index=0, sequence=seq.for_input_sequence())
# 13. Use as output the address you just created in your wallet.
print(address2)
to_address = P2pkhAddress(address2)
to_address.to_string()
# 14. Add a small fee. A few satoshis is fine.
fee = 0.0001
amount = Decimal(btc_to_send) - Decimal(fee)
print("Amount:", amount)
txout = TxOutput(amount, to_address.to_script_pub_key())
# 15. Create the transaction using the input and output.
tx = Transaction([txin], [txout])
# 16. Sign the input.
sig = priv.sign_input(tx, 0, redeem_script)
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 test_creation_address(self):
a1 = P2pkhAddress.from_address(self.address)
self.assertEqual(a1.to_hash160(), self.hash160)
a2 = P2pkhAddress.from_address(self.addressc)
self.assertEqual(a2.to_hash160(), self.hash160c)
