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
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AnonymousCryptoCompass newsroom
August 22, 2026
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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.
Anyone holding one of the 21 tokens that Kraken is removing from trading has until 27 August 2026, 14:00 UTC to withdraw them. After that the exchange closes withdrawals, and between 1 and 5
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