def make_send_to_address_tx(recipient_address,
amount,
private_key,
blockchain_client=BlockchainInfoClient(),
fee=STANDARD_FEE,
change_address=None):
""" Builds and signs a "send to address" transaction.
"""
# get out the private key object, sending address, and inputs
private_key_obj, from_address, inputs = analyze_private_key(
private_key, blockchain_client)
# get the change address
if not change_address:
change_address = from_address
# create the outputs
outputs = make_pay_to_address_outputs(recipient_address,
amount,
inputs,
change_address,
fee=fee)
# serialize the transaction
unsigned_tx = serialize_transaction(inputs, outputs)
# generate a scriptSig for each input
for i in xrange(0, len(inputs)):
signed_tx = sign_transaction(unsigned_tx, i, private_key_obj.to_hex())
unsigned_tx = signed_tx
# return the signed tx
return signed_tx
def make_op_return_tx(data,
private_key,
blockchain_client=BlockchainInfoClient(),
fee=OP_RETURN_FEE,
change_address=None,
format='bin'):
""" Builds and signs an OP_RETURN transaction.
"""
# get out the private key object, sending address, and inputs
private_key_obj, from_address, inputs = analyze_private_key(
private_key, blockchain_client)
# get the change address
if not change_address:
change_address = from_address
# create the outputs
outputs = make_op_return_outputs(data,
inputs,
change_address,
fee=fee,
format=format)
# serialize the transaction
unsigned_tx = serialize_transaction(inputs, outputs)
# generate a scriptSig for each input
for i in xrange(0, len(inputs)):
signed_tx = sign_transaction(unsigned_tx, i, private_key_obj.to_hex())
unsigned_tx = signed_tx
# return the signed tx
return signed_tx
def serialize_sign_and_broadcast(inputs, outputs, private_key,
blockchain_client=BlockchainInfoClient()):
# extract the private key object
private_key_obj = get_private_key_obj(private_key)
# serialize the transaction
unsigned_tx = serialize_transaction(inputs, outputs)
# generate a scriptSig for each input
for i in xrange(0, len(inputs)):
signed_tx = sign_transaction( unsigned_tx, i, private_key_obj.to_hex() )
unsigned_tx = signed_tx
# dispatch the signed transction to the network
response = broadcast_transaction(signed_tx, blockchain_client)
# return the response
return response
def serialize_sign_and_broadcast(inputs, outputs, private_key,
blockchain_client=BlockchainInfoClient()):
# extract the private key object
private_key_obj = get_private_key_obj(private_key)
# serialize the transaction
unsigned_tx = serialize_transaction(inputs, outputs)
# generate a scriptSig for each input
for i in xrange(0, len(inputs)):
signed_tx = sign_transaction(unsigned_tx, i, private_key_obj.to_hex())
unsigned_tx = signed_tx
# dispatch the signed transaction to the network
response = broadcast_transaction(signed_tx, blockchain_client)
# return the response
return response
def sign_all_unsigned_inputs(hex_privkey, unsigned_tx_hex):
"""
Sign a serialized transaction's unsigned inputs
@hex_privkey: private key that should sign inputs
@unsigned_tx_hex: hex transaction with unsigned inputs
Returns: signed hex transaction
"""
inputs, outputs, locktime, version = deserialize_transaction(unsigned_tx_hex)
tx_hex = unsigned_tx_hex
for index in xrange(0, len(inputs)):
if len(inputs[index]['script_sig']) == 0:
# tx with index i signed with privkey
tx_hex = sign_transaction(str(unsigned_tx_hex), index, hex_privkey)
unsigned_tx_hex = tx_hex
return tx_hex
def sign_all_unsigned_inputs(hex_privkey, unsigned_tx_hex):
"""
Sign a serialized transaction's unsigned inputs
@hex_privkey: private key that should sign inputs
@unsigned_tx_hex: hex transaction with unsigned inputs
Returns: signed hex transaction
"""
inputs, outputs, locktime, version = deserialize_transaction(unsigned_tx_hex)
for index in xrange(0, len(inputs)):
if len(inputs[index]['script_sig']) == 0:
# tx with index i signed with privkey
tx_hex = sign_transaction(str(unsigned_tx_hex), index, hex_privkey)
unsigned_tx_hex = tx_hex
return tx_hex
def make_send_to_address_tx(recipient_address, amount, private_key,
blockchain_client=BlockchainInfoClient(), fee=STANDARD_FEE,
change_address=None):
""" Builds and signs a "send to address" transaction.
"""
# get out the private key object, sending address, and inputs
private_key_obj, from_address, inputs = analyze_private_key(private_key,
blockchain_client)
# get the change address
if not change_address:
change_address = from_address
# create the outputs
outputs = make_pay_to_address_outputs(recipient_address, amount, inputs,
change_address, fee=fee)
# serialize the transaction
unsigned_tx = serialize_transaction(inputs, outputs)
# generate a scriptSig for each input
for i in xrange(0, len(inputs)):
signed_tx = sign_transaction( unsigned_tx, i, private_key_obj.to_hex() )
unsigned_tx = signed_tx
# return the signed tx
return signed_tx
def make_op_return_tx(data, private_key,
blockchain_client=BlockchainInfoClient(), fee=OP_RETURN_FEE,
change_address=None, format='bin'):
""" Builds and signs an OP_RETURN transaction.
"""
# get out the private key object, sending address, and inputs
private_key_obj, from_address, inputs = analyze_private_key(private_key,
blockchain_client)
# get the change address
if not change_address:
change_address = from_address
# create the outputs
outputs = make_op_return_outputs(data, inputs, change_address,
fee=fee, format=format)
# serialize the transaction
unsigned_tx = serialize_transaction(inputs, outputs)
# generate a scriptSig for each input
for i in xrange(0, len(inputs)):
signed_tx = sign_transaction( unsigned_tx, i, private_key_obj.to_hex() )
unsigned_tx = signed_tx
# return the signed tx
return signed_tx