Coinbase Advisory Council Warns Bitcoin Must Start Quantum Migration Now

Coinbase's quantum advisory council warns that roughly 7 million Bitcoin could be vulnerable to future quantum attacks and urges blockchain developers to begin post-quantum migration planning now.

• Coinbase's advisory council says a quantum computer powerful enough to break blockchain cryptography could exist as early as 2030.
• Roughly 7 million Bitcoin in legacy addresses with exposed public keys are considered quantum-vulnerable.
• The report outlines options for coins that never migrate: freeze/burn them, do nothing, or use gradual limits.
• The council includes researchers from Stanford, UT Austin, the Ethereum Foundation, and Eigen Labs.
• The debate centers on what to do with abandoned or lost coins whose owners can't migrate them.

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Last updated 12 Jun 2026