Bitcoin sees rare two-block reorg as Foundry overtakes AntPool and ViaBTC in mining race
Bitcoin experienced a rare two-block reorganization after Foundry USA Pool mined a longer chain than rivals AntPool and ViaBTC.Summary
Bitcoin recently underwent a rare two-block reorganization involving competing blocks at heights 941881 and 941882 when multiple mining pools simultaneously produced valid blocks, causing a temporary fork.
Foundry USA Pool eventually extended its branch further than the chain supported by AntPool and ViaBTC, producing seven consecutive blocks that made its chain the heaviest, thus resolving the fork according to Bitcoin's consensus rules.
This resulted in the blocks mined by AntPool and ViaBTC becoming 'stale,' meaning they were valid but dropped from the canonical ledger; however, transactions within them were not lost and returned to the mempool if not included in the winning chain, demonstrating the network's built-in fork resolution mechanism.
(Source：The Block)