Blockchain

Qtum

Consensus: Quantum-Vulnerable
Why this rating. Proof-of-stake blocks carry an ECDSA block signature that nodes verify by public key recovery in src/pos.cpp. A repository search found no post-quantum work.
Transactions: Quantum-Vulnerable
Why this rating. Qtum keeps Bitcoin's UTXO model with secp256k1 ECDSA spending keys and EVM contracts on top. The repository search found no post-quantum proposal or code.
Algorithms: None listed
Website: Website
Source: Source
Note and links: Qtum proof-of-stake block signature check

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