THORChain halted multiple blockchains after an Ethereum block reorg caused a 10 $ETH accounting issue. A vault paid out 10 ETH from a deposit that never reached Ethereum's canonical chain. The solvency checker detected the shortfall and stopped ETH swaps. Node operators then halted withdrawals and other chains as a precaution. The 10 ETH has since been returned, and developers are working on fixes. Affected networks include BTC, ETH, SOL, DOGE, TRON and others.