Fri 14 Aug 2026 ▪
6 min read
▪
by
Luc Jose A.
The quantum threat pushes Ethereum to reconsider its cryptographic choices. Poseidon, long considered as a hash function suitable for zero-knowledge proofs and the post-quantum era, has just been discarded by the network's researchers. Behind this change lies much more than an algorithm choice. Thus, Ethereum is revising the cryptographic foundations of its future architecture. A new approach now promises better performance, enhanced auditability, and safer integration. It remains to understand why Poseidon lost the race, what gains its replacement offers, and at what pace this transition could reach the network.