Ethereum Foundation Abandons Poseidon Post-Quantum Hash Scheme

TechFlow News, August 14, according to Cointelegraph, Ethereum Foundation researcher Justin Drake stated that the Foundation has decided to abandon the Poseidon hash function in the post-quantum architecture plan and instead adopt mature alternatives such as SHA or BLAKE.

Drake pointed out that advances in SNARKs compact proof technology make traditional hash function performance sufficient for planned systems like leanVM, with the production version of leanVM targeting completion in 2027 and deployment to Ethereum's consensus layer, data layer, and execution layer in 2028. Eigen Labs Founder Sreeram Kannan stated that mature hash systems have a smaller attack surface and have undergone years of scrutiny, and collaboration with the Foundation and Succinct has increased proof speed by 2.5 times.