Ethereum Foundation drops Poseidon after 8-year push, shifts future L1 hashing to SHA or BLAKE
AI Market Summary
Ethereum Foundation research is pivoting away from the Poseidon hash toward standard SHA/BLAKE designs for future L1 architectures after advances in binary-field proof systems materially reduced proving costs for conventional hashes. The change signals protocol-layer standardization and potentially lowers implementation and audit friction for proof-driven roadmap components (e.g., post-quantum signature aggregation), but it does not mandate changes for existing rollups, zkVMs, or a near-term fork.
Impact level
● Medium
Affected assets
ETH/USDT-0.40%
AI Insight · ETH/USDTAI Insight
● Neutral
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The Ethereum Foundation is abandoning Poseidon for future layer-1 designs and plans to use standard hashes such as SHA or BLAKE instead, after advances in proof systems changed the performance tradeoff. The shift follows progress in binary-field constructions like Binius, which has lowered the proving cost of conventional hashes that were previously expensive to prove inside SNARKs. The move ends an eight-year effort to develop specialized, proof-friendly cryptography and points to a more standardized, easier-to-implement protocol direction.
