Ethereum Foundation drops Poseidon hash for post-quantum future

Ethereum’s long-term defense against quantum computers just took a sharp turn. The foundation is moving away from the Poseidon hash function, a once-favored tool for zero-knowledge proofs that's losing its luster. Researcher Justin Drake says the pivot comes because Poseidon no longer holds a speed advantage. New breakthroughs in compact proofs mean developers can use more traditional, battle-tested options without sacrificing performance. It's a pragmatic shift for a network trying to outrun future decryption threats. The goal is a 'post-quantum' state where Ethereum remains secure even if high-powered quantum hardware breaks current encryption standards. By ditching Poseidon now, the foundation avoids technical debt in its core scaling roadmap. Will this move toward standard cryptographic primitives make the transition to ZK-rollups easier for the broader developer community?