def sign(utxo, priv, destaddrs, segwit=True):
"""Sign a tx sending the amount amt, from utxo utxo,
equally to each of addresses in list destaddrs,
after fees; the purpose is to create a large
number of utxos. If segwit=True the (single) utxo is assumed to
be of type segwit p2sh/p2wpkh.
"""
results = validate_utxo_data([(utxo, priv)], retrieve=True, segwit=segwit)
if not results:
return False
assert results[0][0] == utxo
amt = results[0][1]
ins = [utxo]
txtype = 'p2sh-p2wpkh' if segwit else 'p2pkh'
estfee = estimate_tx_fee(1, len(destaddrs), txtype=txtype)
outs = []
share = int((amt - estfee) / len(destaddrs))
fee = amt - share * len(destaddrs)
assert fee >= estfee
log.info("Using fee: " + str(fee))
for i, addr in enumerate(destaddrs):
outs.append({'address': addr, 'value': share})
unsigned_tx = btc.mktx(ins, outs)
amtforsign = amt if segwit else None
return btc.sign(unsigned_tx,
0,
btc.from_wif_privkey(priv, vbyte=get_p2pk_vbyte()),
amount=amtforsign)
def sign(utxo, priv, destaddrs):
"""Sign a tx sending the amount amt, from utxo utxo,
equally to each of addresses in list destaddrs,
after fees; the purpose is to create a large
number of utxos.
"""
results = validate_utxo_data([(utxo, priv)], retrieve=True)
if not results:
return False
assert results[0][0] == utxo
amt = results[0][1]
ins = [utxo]
estfee = estimate_tx_fee(1, len(destaddrs))
outs = []
share = int((amt - estfee) / len(destaddrs))
fee = amt - share*len(destaddrs)
assert fee >= estfee
log.info("Using fee: " + str(fee))
for i, addr in enumerate(destaddrs):
outs.append({'address': addr, 'value': share})
unsigned_tx = btc.mktx(ins, outs)
return btc.sign(unsigned_tx, 0, btc.from_wif_privkey(
priv, vbyte=get_p2pk_vbyte()))