Blockchain

QuantumCoin

Consensus: Post-Quantum
Why this rating. Proof-of-stake BFT with deterministic finality. Validator consensus messages use the same hybrid signatures as transactions: Ed25519 plus ML-DSA in compact mode, with SLH-DSA added on every 4,096th proposal. Node sessions use X25519 with ML-KEM-768. Live on mainnet.
Transactions: Post-Quantum
Why this rating. Transactions use a hybrid signature in the node's go-ethereum fork: Ed25519 plus ML-DSA in the default compact mode, with SLH-DSA added in full mode. All signed components must verify, so forging needs both classical and post-quantum breaks.
Algorithms: ML-DSA SLH-DSA ML-KEM
Website: Website
Source: Source
Note and links: Hybrid PQ plus Ed25519 signatures
Quantum resistance overview
Node repository README

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