def mine_msg_txn_incorrectly(self, tip_height, tip_hash):
nonce = 0
op_return_data = self.create_op_return_data(tip_height, tip_hash,
nonce)
tx = CTransaction()
tx.vin.append(CTxIn(COutPoint(0, 0xfffffffe), b"", 0xffffffff))
tx.vout.append(CTxOut(0, CScript([OP_RETURN, op_return_data])))
tx.nLockTime = self.tx_time
tx.mine()
tx.rehash()
self.tx_time += 1
lower_bound = get_target(tx)
upper_bound = uint256_from_str(
hex_str_to_bytes(
"00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
)[::-1])
while tx.sha256s ^ 0x8000000000000000000000000000000000000000000000000000000000000000 <= lower_bound or \
tx.sha256s ^ 0x8000000000000000000000000000000000000000000000000000000000000000 > upper_bound:
nonce += 1
op_return_data[-4:] = struct.pack("<I", nonce)
tx.vout[0] = CTxOut(0, CScript([OP_RETURN, op_return_data]))
tx.mine()
tx.rehash()
return tx
def mine_msg_txn(self, tip_height, tip_hash):
self.log.info("Mining msg txn...")
nonce = 0
op_return_data = self.create_op_return_data(tip_height, tip_hash,
nonce)
tx = CTransaction()
tx.vin.append(CTxIn(COutPoint(0, 0xfffffffe), b"", 0xffffffff))
tx.vout.append(CTxOut(0, CScript([OP_RETURN, op_return_data])))
tx.nLockTime = self.tx_time
tx.mine()
tx.rehash()
self.tx_time += 1
target = get_target(tx)
while tx.sha256s ^ 0x8000000000000000000000000000000000000000000000000000000000000000 > target:
nonce += 1
op_return_data[-4:] = struct.pack("<I", nonce)
tx.vout[0] = CTxOut(0, CScript([OP_RETURN, op_return_data]))
tx.mine()
tx.rehash()
return tx
