According to Coinbase’s Independent Advisory Board, Bitcoin mining hash functions remain secure, while Proof-of-Stake validator signatures may face greater future quantum-related exposure.
Coinbase released the first recommendation paper from its Independent Advisory Board on Quantum Computing and Blockchain on March 21. The paper said Bitcoin mining hash functions are considered secure, but validator signatures used in Proof-of-Stake chains face additional quantum-related risks because signature data is more exposed on-chain. The update reinforces the board’s earlier warning that networks such as Ethereum and Solana may face higher long-term quantum vulnerability than Bitcoin’s mining process.