Coinbase Maps Bitcoin’s Quantum Risks While Safeguarding 5% of BTC

Coinbase, which says it safeguards roughly 5% of all bitcoin, has laid out the technical and operational hurdles bitcoin must clear before quantum-resistant security can become practical. Its message is clear: swapping in a new signature algorithm will not be enough. Coinbase has published a detailed framework describing what developers, custodians, and wallet providers may need to solve before bitcoin can safely migrate to post-quantum cryptography. The exchange argued that any transition must protect exposed coins, fit within bitcoin’s limited block space, preserve full-node validation, and work for both institutional custody and everyday users.

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