#EthereumFoundationDropsPoseidonForL1

Ethereum drops Poseidon as SNARK performance improves.

The quantum threat is pushing Ethereum to rethink its Poseidon cryptographic options, long considered an ideal hash function for zero-knowledge proofs and the post-quantum era, has just been discarded by network researchers. Behind this change is much more than a simple algorithm choice.

As a result, Ethereum is reviewing the cryptographic foundations of its future architecture. A new approach now promises better performance, greater auditability, and more secure integration. It remains to be understood why Poseidon was dropped, what advantages its replacement offers, and how quickly this transition could reach the network.

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