Adam Back Criticizes Ethereum Architecture as AI Cryptographic Threats Spark Industry Debate

Blockstream CEO Adam Back has criticized Ethereum's account-based architecture, arguing that Bitcoin's Unspent Transaction Output (UTXO) model provides superior design for distributed systems. The critique follows warnings from Ethereum researcher Justin Drake that AI-driven mathematical advancements could compromise wallet cryptographic signatures within months rather than years, prompting Drake to advise large holders to consider moving funds. Ethereum co-founder Vitalik Buterin cautioned against panic, affirming that immediate transfers are unnecessary despite real long-term risks. In response to long-term signature security, draft proposal EIP-8141 introduces 'Frame Transactions' to separate validation, execution, and fee authorization.