Blockchain

Tezos

Consensus: Post-Quantum Ready
Why this rating. Judgment call: mainnet bakers still attest with BLS. XMSS signature aggregation with STARK proofs is merged into the tezos/tezos repository (branch pq-aggregate-attestations) and runs on Quantumnet, an experimental testnet with no mainnet date.
Transactions: Post-Quantum Ready
Why this rating. Judgment call: ML-DSA-44 (tz5) accounts are in the protocol since the Ushuaia amendment of June 2026, but a feature flag keeps them off on mainnet. Only test networks, including Quantumnet, enable them.
Algorithms: ML-DSA XMSS
Website: Website
Source: Source
Note and links: PQ code merged, testnet only
Introducing Quantumnet (Tezos Spotlight)
Post-quantum user keys (Agora)

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