Coinbase advisory board urges quantum-resistant wallet upgrades after June 11 report
Coinbase's Quantum Advisory Board said on June 11 that blockchain developers and crypto holders should start shifting to quantum-resistant cryptography, warning that future quantum machines could eventually compromise wallet security. The group estimated about 6.9 million BTC are in wallets with publicly visible keys, including roughly 1.7 million BTC in legacy P2PK addresses where keys are permanently exposed, while noting no quantum computer can break blockchain encryption today and NIST's recommended migration target is 2035.