def write_opreturn(bitcoin_address, bitcoin_private_key, raw_message, fee=5000, push=False):
message = hexlify(raw_message.encode()).decode('utf8')
spendables = spendables_for_address(bitcoin_address)
spendables = [s for s in spendables]
bitcoin_sum = sum([spendable.coin_value for spendable in spendables])
inputs = [spendable.tx_in() for spendable in spendables]
outputs = []
if (bitcoin_sum > fee):
change_output_script = standard_tx_out_script(bitcoin_address)
print change_output_script
outputs.append(TxOut(bitcoin_sum - fee, change_output_script))
## Build the OP_RETURN output with our message
op_return_output_script = script.tools.compile("OP_RETURN %s" % message)
outputs.append(TxOut(0, op_return_output_script))
## Create the transaction and sign it with the private key
tx = Tx(version=1, txs_in=inputs, txs_out=outputs)
tx.set_unspents(spendables)
sign_tx(tx, wifs=[bitcoin_private_key])
print tx.as_hex()
if not push:
return tx.as_hex()
else:
pushtx(tx.as_hex())
else:
print "INADEQUATE FUNDS"
def write_transfer(sender, sender_priv, recipient, message, fee=m.default_fee, avoid_inputs=[]):
message = hexlify(message.encode()).decode('utf8')
spendables = spendables_for_address(sender)
spendables = [s for s in spendables if not spendable_to_legible(s.tx_in()) in avoid_inputs]
bitcoin_sum = sum([spendable.coin_value for spendable in spendables])
inputs = [spendable.tx_in() for spendable in spendables]
outputs = []
if bitcoin_sum > fee + m.dust*2:
remaining = bitcoin_sum - fee - m.dust*2
dest_output_script = standard_tx_out_script(recipient)
change_output_script = standard_tx_out_script(sender)
btc_change_output_script = standard_tx_out_script(sender)
op_return_output_script = script.tools.compile("OP_RETURN %s" % message)
outputs.append(TxOut(m.dust, dest_output_script))
outputs.append(TxOut(m.dust, change_output_script))
outputs.append(TxOut(remaining, btc_change_output_script))
outputs.append(TxOut(0, op_return_output_script))
tx = Tx(version=1, txs_in=inputs, txs_out=outputs)
tx.set_unspents(spendables)
sign_tx(tx, wifs=[sender_priv])
print tx.as_hex()
return tx.as_hex()
else:
print "INADEQUATE FUNDS"
def op_return_this(privatekey, text, prefix = "KEYSTAMP:", bitcoin_fee = 10000):
bitcoin_keyobj = get_key(privatekey)
bitcoin_address = bitcoin_keyobj.bitcoin_address()
## Get the spendable outputs we are going to use to pay the fee
all_spendables = get_spendables_blockcypher(bitcoin_address)
spendables = []
value = 0
for unspent in all_spendables:
while value < bitcoin_fee + 10000:
coin_value = unspent.get("value")
script = h2b(unspent.get("script_hex"))
previous_hash = h2b_rev(unspent.get("tx_hash"))
previous_index = unspent.get("index")
spendables.append(Spendable(coin_value, script, previous_hash, previous_index))
value += coin_value
bitcoin_sum = sum(spendable.coin_value for spendable in spendables)
if(bitcoin_sum < bitcoin_fee):
print "ERROR: not enough balance: available: %s - fee: %s" %(bitcoin_sum, bitcoin_fee)
return False
## Create the inputs we are going to use
inputs = [spendable.tx_in() for spendable in spendables]
## If we will have change left over create an output to send it back
outputs = []
if (bitcoin_sum > bitcoin_fee):
change_output_script = standard_tx_out_script(bitcoin_address)
total_amout = bitcoin_sum - bitcoin_fee
outputs.append(TxOut(total_amout, change_output_script))
# home_address = standard_tx_out_script(bitcoin_address)
# #TODO: it needs some love and IQ on input mananagement stuff
# outputs.append(TxOut((bitcoin_sum - bitcoin_fee), home_address))
## Build the OP_RETURN output with our message
if prefix is not None and (len(text) + len(prefix) <= 80):
text = prefix + text
message = hexlify(text.encode()).decode('utf8')
op_return_output_script = tools.compile("OP_RETURN %s" % message)
outputs.append(TxOut(0, op_return_output_script))
## Create the transaction and sign it with the private key
tx = Tx(version=1, txs_in=inputs, txs_out=outputs)
# print tx.as_hex()
# print spendables
tx.set_unspents(spendables)
sign_tx(tx, wifs=[privatekey])
print "singed_tx: %s" %tx.as_hex()
#TODO: uncomment this when its ready to push data to blockchian
tx_hash = broadcast_tx_blockr(tx.as_hex())
return tx_hash
def process_tx_initial(tx_obj: Tx):
found_relevant_address = False
for out in tx_obj.txs_out:
address = out.bitcoin_address()
if address in all_addresses:
found_relevant_address = True
break
if not found_relevant_address:
logging.info('Found irrelevant tx %s' % hash_to_hex(tx_obj.hash()))
return
tx_hash = tx_obj.hash()
txid = hash_to_hex(tx_hash).decode()
if tx_hash in known_txs:
return
known_txs.add(tx_hash)
txs[tx_hash] = tx_obj.as_hex()
for out in tx_obj.txs_out:
address = out.bitcoin_address()
if address in all_addresses and address is not None:
unprocessed_txs.add(tx_hash)
uid = addr_to_uid[address]
account = Account(uid)
account.txs.add(tx_hash)
account.unconf_minutes.incr(calc_node_minutes(satoshi_amount=out.coin_value, exchange_rate=exchange_rate.get()))
account.add_msg('Found tx for %.08f, %s' % (out.coin_value / COIN, txid))
nodes_recently_updated.append(account.uid)
def create_raw_transaction(self, escrow, fees):
logging.info('starting raw transaction to payout address %s' %
escrow['sellerpayoutaddress'])
# convenience method provided by pycoin to get spendables from insight server
insight = InsightService(INSIGHT)
spendables = insight.spendables_for_address(escrow['multisigaddress'])
# create the tx_in
txs_in = []
for s in spendables:
txs_in.append(s.tx_in())
script = standard_tx_out_script(escrow['multisigaddress'])
tx_out = TxOut(fees['seller'], script)
txs_out = [tx_out]
tx1 = Tx(version=1, txs_in=txs_in, txs_out=txs_out)
tx1.set_unspents(txs_out)
# this will be the hex of the tx we're going to send in the POST request
hex_tx = tx1.as_hex(include_unspents=True)
return hex_tx
def main():
if len(sys.argv) != 2:
print("usage: %s address" % sys.argv[0])
sys.exit(-1)
# validate the address
address = sys.argv[1]
assert is_address_valid(address)
print("creating coinbase transaction to %s" % address)
tx_in = TxIn.coinbase_tx_in(script=b'')
tx_out = TxOut(50*1e8, standard_tx_out_script(address))
tx = Tx(1, [tx_in], [tx_out])
print("Here is the tx as hex:\n%s" % tx.as_hex())
def main():
if len(sys.argv) != 2:
print("usage: %s address" % sys.argv[0])
sys.exit(-1)
# validate the address
address = sys.argv[1]
assert is_address_valid(address)
print("creating coinbase transaction to %s" % address)
tx_in = TxIn.coinbase_tx_in(script=b'')
tx_out = TxOut(50 * 1e8, standard_tx_out_script(address))
tx = Tx(1, [tx_in], [tx_out])
print("Here is the tx as hex:\n%s" % tx.as_hex())
amount = convention.btc_to_satoshi(first_nondust['amount'])
dustbtc = convention.btc_to_satoshi(DUST)
feebtc = convention.btc_to_satoshi(FEE)
unspent = Spendable( amount, standard_tx_out_script(first_address), \
serialize.h2b_rev(first_nondust['tx']), first_nondust['n'] )
txout = TxOut( dustbtc, standard_tx_out_script(bob_notif.address()) )
change = TxOut( amount - (dustbtc + feebtc), standard_tx_out_script(change_addresses.pop()) )
op_return_script = pay_to.ScriptNulldata(alice_masked_pcode_nosuffix)
op_return_txout = TxOut(0, op_return_script.script())
notif_tx = Tx( 1, [unspent.tx_in()], [txout, change, op_return_txout], unspents=[unspent] )
tx_utils.sign_tx( notif_tx, [first_node.wif()] )
print "Signed Notification TX as hex:\n", notif_tx.as_hex()
data = urlencode(dict( hex=notif_tx.as_hex() ))
response = json.load( urlopen(url="http://tbtc.blockr.io/api/v1/tx/decode", data=data) )
print "Decoded:\n", pretty_json(response), '\n'
alice_notif_exp = alice_notif.secret_exponent()
bob_pcode_nodes = get_nodes(bob_wallet, GAP_LIMIT, pcode=True)
bob_ephem_key = None
for bob_pcode_node in bob_pcode_nodes.values():
pcode_pp = bob_pcode_node.public_pair()
pcode_point = ellipticcurve.Point(curve, pcode_pp[0], pcode_pp[1])
secret_point = alice_notif_exp * pcode_point
def main():
parser = argparse.ArgumentParser(
description="Manipulate bitcoin (or alt coin) transactions.",
epilog=EPILOG)
parser.add_argument('-t', "--transaction-version", type=int,
help='Transaction version, either 1 (default) or 3 (not yet supported).')
parser.add_argument('-l', "--lock-time", type=parse_locktime, help='Lock time; either a block'
'index, or a date/time (example: "2014-01-01T15:00:00"')
parser.add_argument('-n', "--network", default="BTC",
help='Define network code (M=Bitcoin mainnet, T=Bitcoin testnet).')
parser.add_argument('-a', "--augment", action='store_true',
help='augment tx by adding any missing spendable metadata by fetching'
' inputs from cache and/or web services')
parser.add_argument("-i", "--fetch-spendables", metavar="address", action="append",
help='Add all unspent spendables for the given bitcoin address. This information'
' is fetched from web services.')
parser.add_argument('-f', "--private-key-file", metavar="path-to-private-keys", action="append",
help='file containing WIF or BIP0032 private keys. If file name ends with .gpg, '
'"gpg -d" will be invoked automatically. File is read one line at a time, and if '
'the file contains only one WIF per line, it will also be scanned for a bitcoin '
'address, and any addresses found will be assumed to be public keys for the given'
' private key.',
type=argparse.FileType('r'))
parser.add_argument('-g', "--gpg-argument", help='argument to pass to gpg (besides -d).', default='')
parser.add_argument("--remove-tx-in", metavar="tx_in_index_to_delete", action="append", type=int,
help='remove a tx_in')
parser.add_argument("--remove-tx-out", metavar="tx_out_index_to_delete", action="append", type=int,
help='remove a tx_out')
parser.add_argument('-F', "--fee", help='fee, in satoshis, to pay on transaction, or '
'"standard" to auto-calculate. This is only useful if the "split pool" '
'is used; otherwise, the fee is automatically set to the unclaimed funds.',
default="standard", metavar="transaction-fee", type=parse_fee)
parser.add_argument('-C', "--cache", help='force the resultant transaction into the transaction cache.'
' Mostly for testing.', action='store_true'),
parser.add_argument('-u', "--show-unspents", action='store_true',
help='show TxOut items for this transaction in Spendable form.')
parser.add_argument('-b', "--bitcoind-url",
help='URL to bitcoind instance to validate against (http://user:pass@host:port).')
parser.add_argument('-o', "--output-file", metavar="path-to-output-file", type=argparse.FileType('wb'),
help='file to write transaction to. This supresses most other output.')
parser.add_argument("argument", nargs="+", help='generic argument: can be a hex transaction id '
'(exactly 64 characters) to be fetched from cache or a web service;'
' a transaction as a hex string; a path name to a transaction to be loaded;'
' a spendable 4-tuple of the form tx_id/tx_out_idx/script_hex/satoshi_count '
'to be added to TxIn list; an address/satoshi_count to be added to the TxOut '
'list; an address to be added to the TxOut list and placed in the "split'
' pool".')
args = parser.parse_args()
# defaults
txs = []
spendables = []
payables = []
key_iters = []
TX_ID_RE = re.compile(r"^[0-9a-fA-F]{64}$")
# there are a few warnings we might optionally print out, but only if
# they are relevant. We don't want to print them out multiple times, so we
# collect them here and print them at the end if they ever kick in.
warning_tx_cache = None
warning_get_tx = None
warning_spendables = None
if args.private_key_file:
wif_re = re.compile(r"[1-9a-km-zA-LMNP-Z]{51,111}")
# address_re = re.compile(r"[1-9a-kmnp-zA-KMNP-Z]{27-31}")
for f in args.private_key_file:
if f.name.endswith(".gpg"):
gpg_args = ["gpg", "-d"]
if args.gpg_argument:
gpg_args.extend(args.gpg_argument.split())
gpg_args.append(f.name)
popen = subprocess.Popen(gpg_args, stdout=subprocess.PIPE)
f = popen.stdout
for line in f.readlines():
# decode
if isinstance(line, bytes):
line = line.decode("utf8")
# look for WIFs
possible_keys = wif_re.findall(line)
def make_key(x):
try:
return Key.from_text(x)
except Exception:
return None
keys = [make_key(x) for x in possible_keys]
for key in keys:
if key:
key_iters.append((k.wif() for k in key.subkeys("")))
# if len(keys) == 1 and key.hierarchical_wallet() is None:
# # we have exactly 1 WIF. Let's look for an address
# potential_addresses = address_re.findall(line)
# we create the tx_db lazily
tx_db = None
for arg in args.argument:
# hex transaction id
if TX_ID_RE.match(arg):
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_get_tx = message_about_get_tx_env()
tx_db = get_tx_db()
tx = tx_db.get(h2b_rev(arg))
if not tx:
for m in [warning_tx_cache, warning_get_tx, warning_spendables]:
if m:
print("warning: %s" % m, file=sys.stderr)
parser.error("can't find Tx with id %s" % arg)
txs.append(tx)
continue
# hex transaction data
try:
tx = Tx.tx_from_hex(arg)
txs.append(tx)
continue
except Exception:
pass
try:
key = Key.from_text(arg)
# TODO: check network
if key.wif() is None:
payables.append((key.address(), 0))
continue
# TODO: support paths to subkeys
key_iters.append((k.wif() for k in key.subkeys("")))
continue
except Exception:
pass
if os.path.exists(arg):
try:
with open(arg, "rb") as f:
if f.name.endswith("hex"):
f = io.BytesIO(codecs.getreader("hex_codec")(f).read())
tx = Tx.parse(f)
txs.append(tx)
try:
tx.parse_unspents(f)
except Exception as ex:
pass
continue
except Exception:
pass
parts = arg.split("/")
if len(parts) == 4:
# spendable
try:
spendables.append(Spendable.from_text(arg))
continue
except Exception:
pass
# TODO: fix allowable_prefixes
allowable_prefixes = b'\0'
if len(parts) == 2 and encoding.is_valid_bitcoin_address(
parts[0], allowable_prefixes=allowable_prefixes):
try:
payables.append(parts)
continue
except ValueError:
pass
parser.error("can't parse %s" % arg)
if args.fetch_spendables:
warning_spendables = message_about_spendables_for_address_env()
for address in args.fetch_spendables:
spendables.extend(spendables_for_address(address))
for tx in txs:
if tx.missing_unspents() and args.augment:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_get_tx = message_about_get_tx_env()
tx_db = get_tx_db()
tx.unspents_from_db(tx_db, ignore_missing=True)
txs_in = []
txs_out = []
unspents = []
# we use a clever trick here to keep each tx_in corresponding with its tx_out
for tx in txs:
smaller = min(len(tx.txs_in), len(tx.txs_out))
txs_in.extend(tx.txs_in[:smaller])
txs_out.extend(tx.txs_out[:smaller])
unspents.extend(tx.unspents[:smaller])
for tx in txs:
smaller = min(len(tx.txs_in), len(tx.txs_out))
txs_in.extend(tx.txs_in[smaller:])
txs_out.extend(tx.txs_out[smaller:])
unspents.extend(tx.unspents[smaller:])
for spendable in spendables:
txs_in.append(spendable.tx_in())
unspents.append(spendable)
for address, coin_value in payables:
script = standard_tx_out_script(address)
txs_out.append(TxOut(coin_value, script))
lock_time = args.lock_time
version = args.transaction_version
# if no lock_time is explicitly set, inherit from the first tx or use default
if lock_time is None:
if txs:
lock_time = txs[0].lock_time
else:
lock_time = DEFAULT_LOCK_TIME
# if no version is explicitly set, inherit from the first tx or use default
if version is None:
if txs:
version = txs[0].version
else:
version = DEFAULT_VERSION
if args.remove_tx_in:
s = set(args.remove_tx_in)
txs_in = [tx_in for idx, tx_in in enumerate(txs_in) if idx not in s]
if args.remove_tx_out:
s = set(args.remove_tx_out)
txs_out = [tx_out for idx, tx_out in enumerate(txs_out) if idx not in s]
tx = Tx(txs_in=txs_in, txs_out=txs_out, lock_time=lock_time, version=version, unspents=unspents)
fee = args.fee
try:
distribute_from_split_pool(tx, fee)
except ValueError as ex:
print("warning: %s" % ex.args[0], file=sys.stderr)
unsigned_before = tx.bad_signature_count()
if unsigned_before > 0 and key_iters:
def wif_iter(iters):
while len(iters) > 0:
for idx, iter in enumerate(iters):
try:
wif = next(iter)
yield wif
except StopIteration:
iters = iters[:idx] + iters[idx+1:]
break
print("signing...", file=sys.stderr)
sign_tx(tx, wif_iter(key_iters))
unsigned_after = tx.bad_signature_count()
if unsigned_after > 0 and key_iters:
print("warning: %d TxIn items still unsigned" % unsigned_after, file=sys.stderr)
if len(tx.txs_in) == 0:
print("warning: transaction has no inputs", file=sys.stderr)
if len(tx.txs_out) == 0:
print("warning: transaction has no outputs", file=sys.stderr)
include_unspents = (unsigned_after > 0)
tx_as_hex = tx.as_hex(include_unspents=include_unspents)
if args.output_file:
f = args.output_file
if f.name.endswith(".hex"):
f.write(tx_as_hex.encode("utf8"))
else:
tx.stream(f)
if include_unspents:
tx.stream_unspents(f)
f.close()
elif args.show_unspents:
for spendable in tx.tx_outs_as_spendable():
print(spendable.as_text())
else:
if not tx.missing_unspents():
check_fees(tx)
dump_tx(tx, args.network)
if include_unspents:
print("including unspents in hex dump since transaction not fully signed")
print(tx_as_hex)
if args.cache:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_get_tx = message_about_get_tx_env()
tx_db = get_tx_db()
tx_db.put(tx)
if args.bitcoind_url:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_get_tx = message_about_get_tx_env()
tx_db = get_tx_db()
validate_bitcoind(tx, tx_db, args.bitcoind_url)
if tx.missing_unspents():
print("\n** can't validate transaction as source transactions missing", file=sys.stderr)
else:
try:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_get_tx = message_about_get_tx_env()
tx_db = get_tx_db()
tx.validate_unspents(tx_db)
print('all incoming transaction values validated')
except BadSpendableError as ex:
print("\n**** ERROR: FEES INCORRECTLY STATED: %s" % ex.args[0], file=sys.stderr)
except Exception as ex:
print("\n*** can't validate source transactions as untampered: %s" %
ex.args[0], file=sys.stderr)
# print warnings
for m in [warning_tx_cache, warning_get_tx, warning_spendables]:
if m:
print("warning: %s" % m, file=sys.stderr)
def main():
parser = create_parser()
args = parser.parse_args()
(txs, spendables, payables, key_iters, p2sh_lookup, tx_db,
warning_tx_cache, warning_tx_for_tx_hash, warning_spendables) = parse_context(args, parser)
txs_in = []
txs_out = []
unspents = []
# we use a clever trick here to keep each tx_in corresponding with its tx_out
for tx in txs:
smaller = min(len(tx.txs_in), len(tx.txs_out))
txs_in.extend(tx.txs_in[:smaller])
txs_out.extend(tx.txs_out[:smaller])
unspents.extend(tx.unspents[:smaller])
for tx in txs:
smaller = min(len(tx.txs_in), len(tx.txs_out))
txs_in.extend(tx.txs_in[smaller:])
txs_out.extend(tx.txs_out[smaller:])
unspents.extend(tx.unspents[smaller:])
for spendable in spendables:
txs_in.append(spendable.tx_in())
unspents.append(spendable)
for address, coin_value in payables:
script = standard_tx_out_script(address)
txs_out.append(TxOut(coin_value, script))
lock_time = args.lock_time
version = args.transaction_version
# if no lock_time is explicitly set, inherit from the first tx or use default
if lock_time is None:
if txs:
lock_time = txs[0].lock_time
else:
lock_time = DEFAULT_LOCK_TIME
# if no version is explicitly set, inherit from the first tx or use default
if version is None:
if txs:
version = txs[0].version
else:
version = DEFAULT_VERSION
if args.remove_tx_in:
s = set(args.remove_tx_in)
txs_in = [tx_in for idx, tx_in in enumerate(txs_in) if idx not in s]
if args.remove_tx_out:
s = set(args.remove_tx_out)
txs_out = [tx_out for idx, tx_out in enumerate(txs_out) if idx not in s]
tx = Tx(txs_in=txs_in, txs_out=txs_out, lock_time=lock_time, version=version, unspents=unspents)
fee = args.fee
try:
distribute_from_split_pool(tx, fee)
except ValueError as ex:
print("warning: %s" % ex.args[0], file=sys.stderr)
unsigned_before = tx.bad_signature_count()
unsigned_after = unsigned_before
if unsigned_before > 0 and key_iters:
def wif_iter(iters):
while len(iters) > 0:
for idx, iter in enumerate(iters):
try:
wif = next(iter)
yield wif
except StopIteration:
iters = iters[:idx] + iters[idx+1:]
break
print("signing...", file=sys.stderr)
sign_tx(tx, wif_iter(key_iters), p2sh_lookup=p2sh_lookup)
unsigned_after = tx.bad_signature_count()
if unsigned_after > 0:
print("warning: %d TxIn items still unsigned" % unsigned_after, file=sys.stderr)
if len(tx.txs_in) == 0:
print("warning: transaction has no inputs", file=sys.stderr)
if len(tx.txs_out) == 0:
print("warning: transaction has no outputs", file=sys.stderr)
include_unspents = (unsigned_after > 0)
tx_as_hex = tx.as_hex(include_unspents=include_unspents)
if args.output_file:
f = args.output_file
if f.name.endswith(".hex"):
f.write(tx_as_hex.encode("utf8"))
else:
tx.stream(f)
if include_unspents:
tx.stream_unspents(f)
f.close()
elif args.show_unspents:
for spendable in tx.tx_outs_as_spendable():
print(spendable.as_text())
else:
if not tx.missing_unspents():
check_fees(tx)
dump_tx(tx, args.network, args.verbose_signature, args.disassemble, args.trace, args.pdb)
if include_unspents:
print("including unspents in hex dump since transaction not fully signed")
print(tx_as_hex)
if args.cache:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_tx_for_tx_hash = message_about_tx_for_tx_hash_env(args.network)
tx_db = get_tx_db(args.network)
tx_db.put(tx)
if args.bitcoind_url:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_tx_for_tx_hash = message_about_tx_for_tx_hash_env(args.network)
tx_db = get_tx_db(args.network)
validate_bitcoind(tx, tx_db, args.bitcoind_url)
if tx.missing_unspents():
print("\n** can't validate transaction as source transactions missing", file=sys.stderr)
else:
try:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_tx_for_tx_hash = message_about_tx_for_tx_hash_env(args.network)
tx_db = get_tx_db(args.network)
tx.validate_unspents(tx_db)
print('all incoming transaction values validated')
except BadSpendableError as ex:
print("\n**** ERROR: FEES INCORRECTLY STATED: %s" % ex.args[0], file=sys.stderr)
except Exception as ex:
print("\n*** can't validate source transactions as untampered: %s" %
ex.args[0], file=sys.stderr)
# print warnings
for m in [warning_tx_cache, warning_tx_for_tx_hash, warning_spendables]:
if m:
print("warning: %s" % m, file=sys.stderr)
def main():
parser = create_parser()
args = parser.parse_args()
(txs, spendables, payables, key_iters, p2sh_lookup, tx_db,
warning_tx_cache, warning_tx_for_tx_hash,
warning_spendables) = parse_context(args, parser)
txs_in = []
txs_out = []
unspents = []
# we use a clever trick here to keep each tx_in corresponding with its tx_out
for tx in txs:
smaller = min(len(tx.txs_in), len(tx.txs_out))
txs_in.extend(tx.txs_in[:smaller])
txs_out.extend(tx.txs_out[:smaller])
unspents.extend(tx.unspents[:smaller])
for tx in txs:
smaller = min(len(tx.txs_in), len(tx.txs_out))
txs_in.extend(tx.txs_in[smaller:])
txs_out.extend(tx.txs_out[smaller:])
unspents.extend(tx.unspents[smaller:])
for spendable in spendables:
txs_in.append(spendable.tx_in())
unspents.append(spendable)
for address, coin_value in payables:
script = standard_tx_out_script(address)
txs_out.append(TxOut(coin_value, script))
lock_time = args.lock_time
version = args.transaction_version
# if no lock_time is explicitly set, inherit from the first tx or use default
if lock_time is None:
if txs:
lock_time = txs[0].lock_time
else:
lock_time = DEFAULT_LOCK_TIME
# if no version is explicitly set, inherit from the first tx or use default
if version is None:
if txs:
version = txs[0].version
else:
version = DEFAULT_VERSION
if args.remove_tx_in:
s = set(args.remove_tx_in)
txs_in = [tx_in for idx, tx_in in enumerate(txs_in) if idx not in s]
if args.remove_tx_out:
s = set(args.remove_tx_out)
txs_out = [
tx_out for idx, tx_out in enumerate(txs_out) if idx not in s
]
tx = Tx(txs_in=txs_in,
txs_out=txs_out,
lock_time=lock_time,
version=version,
unspents=unspents)
fee = args.fee
try:
distribute_from_split_pool(tx, fee)
except ValueError as ex:
print("warning: %s" % ex.args[0], file=sys.stderr)
unsigned_before = tx.bad_signature_count()
unsigned_after = unsigned_before
if unsigned_before > 0 and key_iters:
def wif_iter(iters):
while len(iters) > 0:
for idx, iter in enumerate(iters):
try:
wif = next(iter)
yield wif
except StopIteration:
iters = iters[:idx] + iters[idx + 1:]
break
print("signing...", file=sys.stderr)
sign_tx(tx, wif_iter(key_iters), p2sh_lookup=p2sh_lookup)
unsigned_after = tx.bad_signature_count()
if unsigned_after > 0:
print("warning: %d TxIn items still unsigned" % unsigned_after,
file=sys.stderr)
if len(tx.txs_in) == 0:
print("warning: transaction has no inputs", file=sys.stderr)
if len(tx.txs_out) == 0:
print("warning: transaction has no outputs", file=sys.stderr)
include_unspents = (unsigned_after > 0)
tx_as_hex = tx.as_hex(include_unspents=include_unspents)
if args.output_file:
f = args.output_file
if f.name.endswith(".hex"):
f.write(tx_as_hex.encode("utf8"))
else:
tx.stream(f)
if include_unspents:
tx.stream_unspents(f)
f.close()
elif args.show_unspents:
for spendable in tx.tx_outs_as_spendable():
print(spendable.as_text())
else:
if not tx.missing_unspents():
check_fees(tx)
dump_tx(tx, args.network, args.verbose_signature, args.disassemble,
args.trace, args.pdb)
if include_unspents:
print(
"including unspents in hex dump since transaction not fully signed"
)
print(tx_as_hex)
if args.cache:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_tx_for_tx_hash = message_about_tx_for_tx_hash_env(
args.network)
tx_db = get_tx_db(args.network)
tx_db.put(tx)
if args.bitcoind_url:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_tx_for_tx_hash = message_about_tx_for_tx_hash_env(
args.network)
tx_db = get_tx_db(args.network)
validate_bitcoind(tx, tx_db, args.bitcoind_url)
if tx.missing_unspents():
print("\n** can't validate transaction as source transactions missing",
file=sys.stderr)
else:
try:
if tx_db is None:
warning_tx_cache = message_about_tx_cache_env()
warning_tx_for_tx_hash = message_about_tx_for_tx_hash_env(
args.network)
tx_db = get_tx_db(args.network)
tx.validate_unspents(tx_db)
print('all incoming transaction values validated')
except BadSpendableError as ex:
print("\n**** ERROR: FEES INCORRECTLY STATED: %s" % ex.args[0],
file=sys.stderr)
except Exception as ex:
print(
"\n*** can't validate source transactions as untampered: %s" %
ex.args[0],
file=sys.stderr)
# print warnings
for m in [warning_tx_cache, warning_tx_for_tx_hash, warning_spendables]:
if m:
print("warning: %s" % m, file=sys.stderr)
message = hexlify(raw_message.encode()).decode('utf8')
## Get the spendable outputs we are going to use to pay the fee
spendables = spendables_for_address(bitcoin_address)
bitcoin_sum = sum(spendable.coin_value for spendable in spendables)
if(bitcoin_sum < bitcoin_fee):
exit("Not enough satoshis to cover the fee. found: {sum} need: {fee}"
.format(sum=bitcoin_sum,fee=bitcoin_fee))
## Create the inputs we are going to use
inputs = [spendable.tx_in() for spendable in spendables]
## If we will have change left over create an output to send it back
outputs = []
if (bitcoin_sum > bitcoin_fee):
change_output_script = standard_tx_out_script(bitcoin_address)
outputs.append(TxOut(bitcoin_sum - bitcoin_fee, change_output_script))
## Build the OP_RETURN output with our message
op_return_output_script = script.tools.compile("OP_RETURN %s" % message)
outputs.append(TxOut(0, op_return_output_script))
## Create the transaction and sign it with the private key
tx = Tx(version=1, txs_in=inputs, txs_out=outputs)
tx.set_unspents(spendables)
signed_tx = sign_tx(tx, wifs=[bitcoin_private_key])
## Send the signed transaction to the network through bitcoind
## Note: that os.system() prints the response for us
system("bitcoin-cli sendrawtransaction %s" % tx.as_hex())
## going to create a spend from this address. This should be the code on the web server
spendables = insight.spendables_for_address(address)
txs_in = []
for s in spendables:
print s
txs_in.append(s.tx_in())
# make tx_out on web server
script = standard_tx_out_script(address)
tx_out = TxOut(100000, script)
txs_out = [tx_out]
tx1 = Tx(version=1, txs_in=txs_in, txs_out=txs_out)
tx1.set_unspents(txs_out)
txhex = tx1.as_hex(include_unspents=True)
# send txhex to private key server
tx2 = Tx.tx_from_hex(txhex)
script = standard_tx_out_script("1F8P3QEErMhm3fw6o23brRNQVaSMrG1maE")
tx_out = TxOut(50000, script)
script = standard_tx_out_script("1Dv9YWfVYMK1FjBhrCBc1diajSZKBj78MB")
tx2_out = TxOut(50000, script)
txs_out = [tx_out, tx2_out]
tx2.txs_out = txs_out
hash160_lookup = build_hash160_lookup(key.secret_exponent()
for key in keys[:M])
p2sh_lookup = build_p2sh_lookup([underlying_script])
print(address)
# Filling up the new created address with the fake coinbase transaction. No signature rquired.
# Very important part. When you move funds to a p2sh address you write a special scriptPubKey:
# Instead of: OP_DUP OP_HASH160 <PubkeyHash> OP_EQUALVERIFY OP_CHECKSIG
# your p2sh scriptPubKey will be:
# OP_HASH160 <hash(redeemScript)> OP_EQUAL
# standard_tx_out_script(address) gives the scriptPubKey for a given multisig address
script = standard_tx_out_script(address)
# Fake coinbase transaction to fill our p2sh address
# It it is a coinbase transaction we put in a newly constructed block.
tx_in = TxIn.coinbase_tx_in(script=b'')
print("TxIn: %s" % tx_in.__str__())
tx_out = TxOut(1000000, script)
print("TxOut: %s" % tx_out.__str__())
tx1 = Tx(version=1, txs_in=[tx_in], txs_out=[tx_out])
tx1.as_hex()
# we now have an UTXO redeemable by supplying the script and the required sigs.
# tx_utils.create_tx() allows to spend all the UTXO from the preavious tx to an arbitrary address.
tx2 = tx_utils.create_tx(tx1.tx_outs_as_spendable(), [keys[-1].address()])
# to split the input in each of the generated addresses
# tx2 = tx_utils.create_tx(tx1.tx_outs_as_spendable(), [keys[i].address() for i in range(len(keys))])
print("unsigned transaction:")
print("bad signatures: %s" % tx2.bad_signature_count())
print(tx2.as_hex())
for i in range(1, N+1):
print("signining with key number: %s" % i)
hash160_lookup = build_hash160_lookup([keys[i].secret_exponent()])
p2sh_lookup = build_p2sh_lookup([underlying_script])
tx2.sign(hash160_lookup=hash160_lookup,p2sh_lookup=p2sh_lookup)
print(tx2.as_hex())
print("This transactions have now : %s signature of %t necessary" % (i, N))
