Balancer Attacker Swaps 21,000 ETH for 617.43 BTC Worth $48.72 Million

The claim's key numeric detail is directly supported by 'Balancer 攻击者将 13191 枚 ETH 兑换为 386 枚 BTC', which states that Onchain Lens observed the Balancer attacker exchanging 13,191 ETH for 386.52 BTC worth about $30.54 million. The broader context in the claim is also supported: 'Balancer 攻击者转移 100 枚 ETH 并通过 Tornado Cash 清洗，仍持有 21900 枚 ETH' says the attacker resumed movement after 5 months and used Tornado Cash; 'Balancer黑客将1100枚ETH兑换为BTC - BlockBeats' says the attacker was using THORChain to convert ETH to BTC; and 'Balancer 黑客目前已将 14,300 枚 ETH 换成 419.3 枚 BTC' attributes a later cumulative update to Ember. These later figures extend the activity rather than contradict the 13,191 ETH snapshot. Confidence is medium rather than high because the most primary cited X posts from Onchain Lens and Ember could not be directly fetched due to rate limiting, leaving secondary reports as the main evidence.