
According to the report, Foundry USA’s competing chain replaced blocks mined by AntPool and ViaBTC, marking Bitcoin’s first two-block reorganization in roughly three years.
Bitcoin underwent a rare two-block reorganization at block height 941880, with Foundry USA ultimately winning the mining race. AntPool mined block 941881 and ViaBTC mined 941882, but Foundry USA’s competing chain prevailed on the 23rd, replacing those blocks. The event was reported as Bitcoin’s first two-block reorg in about three years.