Coinbase's quantum advisory council released a report urging blockchain communities to begin post-quantum migration planning now. The report warns that a cryptographically relevant quantum computer could exist by 2030, potentially exposing roughly 7 million Bitcoin due to exposed public keys and address reuse. The council outlines three options for coins not migrated to quantum-safe addresses: permanently freeze/burn them, do nothing, or adopt middle-ground steps like limiting vulnerable coin movement or accepting special cryptographic proofs. The debate includes implications for Ethereum, Solana, and Stellar, with technical preparations underway but unresolved questions about abandoned coins.

Key facts

• Coinbase advisory council urges immediate post-quantum migration planning.
• Roughly 7 million Bitcoin are vulnerable due to exposed public keys.
• Three options proposed for unmigrated coins: freeze, do nothing, or middle-ground.
• Ethereum, Solana, and Stellar are also preparing for quantum threats.

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