: Automated payment processors or exchanges with low confirmation thresholds.
: The merchant/exchange loses the goods or currency, while the attacker retains their original Bitcoin on the main chain. Bitcoin_Fake_Transaction_Vector76_attack_Full_V...
: Immediately after, the attacker broadcasts their pre-mined block to the network. : Automated payment processors or exchanges with low
: Once the attacker finds a block, they quickly send a second transaction—sending the same coins from Address A to the exchange's Address C—directly to the exchange's node. Bitcoin_Fake_Transaction_Vector76_attack_Full_V...
The attack combines elements of a and a Race attack by leveraging a pre-mined block.