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Altcoins

Ethereum Drops Poseidon From Its Quantum Plans, and Not Because It Broke

The Ethereum Foundation is dropping the Poseidon hash function from its post-quantum security roadmap, according to researcher Justin Drake, who announced the shift on Thursday. Drake said th

AnonymousCryptoCompass newsroom
August 22, 2026
1 min read
NEWS
Ethereum Drops Poseidon From Its Quantum Plans, and Not Because It Broke
CryptoCompass editorial visual for altcoins coverage.

The Ethereum Foundation is dropping the Poseidon hash function from its post-quantum security roadmap, according to researcher Justin Drake, who announced the shift on Thursday.

Drake said the foundation is turning to well-established alternatives such as SHA or BLAKE to replace Poseidon in its planned quantum-resistant architecture. A hash function converts data into a fixed digital fingerprint, allowing computers to verify that information has not been tampered with.

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