change_addr = rpc.getnewaddress()
change_pubkey_hex = rpc.getaddressinfo(change_addr)['pubkey']
change_out = CMutableTxOut(
CoreCoinParams.MAX_MONEY,
CScript([x(change_pubkey_hex), OP_CHECKSIG]))
digest_outs = [CMutableTxOut(0, CScript([OP_RETURN, digest]))]
txouts = [change_out] + digest_outs
tx = CTransaction(txins, txouts).to_mutable()
FEE_PER_VBYTE = 0.00025 * CoreCoinParams.COIN / 1000
while True:
required_fee = tx.get_virtual_size() * FEE_PER_VBYTE
tx.vout[0].nValue = int(value_in -
max(required_fee, 0.00011 *
CoreCoinParams.COIN))
r = rpc.signrawtransactionwithwallet(b2x(tx.serialize()))
assert r['complete']
tx = CTransaction.deserialize(x(r['hex']))
if value_in - tx.vout[0].nValue >= required_fee:
tx_bytes = tx.serialize()
tx_hex = b2x(tx_bytes)
print(tx_hex)
print(len(tx_bytes), 'bytes', file=sys.stderr)
print(rpc.sendrawtransaction(tx_hex))
break
]
value_in = coins_to_satoshi(unspent[-1]['amount'])
change_addr = rpc.getnewaddress()
change_pubkey_hex = rpc.getaddressinfo(change_addr)['pubkey']
txouts = [
CTxOut(CoreCoinParams.MAX_MONEY,
CScript([x(change_pubkey_hex), OP_CHECKSIG])),
CTxOut(0, CScript([OP_RETURN, digest]))
]
tx_unsigned = CTransaction(txins, txouts).to_mutable()
FEE_PER_VBYTE = 0.00025 * CoreCoinParams.COIN / 1000
while True:
required_fee = tx_unsigned.get_virtual_size() * FEE_PER_VBYTE
tx_unsigned.vout[0].nValue = int(value_in -
max(required_fee, 0.00011 *
CoreCoinParams.COIN))
r = rpc.signrawtransactionwithwallet(b2x(tx_unsigned.serialize()))
assert r['complete']
tx_signed = CTransaction.deserialize(x(r['hex']))
if value_in - tx_signed.vout[0].nValue >= required_fee:
tx_bytes = tx_signed.serialize()
tx_hex = b2x(tx_bytes)
print(tx_hex)
print(len(tx_bytes), 'bytes', file=sys.stderr)
print(rpc.sendrawtransaction(tx_hex))
break
