Coinbase urges Bitcoin quantum-resistant migration
Story timeline · 2 updates, 13 Oct to 14 Oct 2026
Coinbase published a technical discussion urging early planning for Bitcoin's post-quantum migration, weighing block space, validation, custody and wallet compatibility. It now says it custodies about 5% of all Bitcoin and proposed a flexible container design similar to BIP-360 plus a phased 1-of-2 scheme compatible…
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Coinbase says Bitcoin needs early planning for post-quantum migration
Coinbase published a technical discussion on Bitcoin's post-quantum readiness, saying the community should start migration preparations early. It said the upgrade must weigh block space limits, full-node validation, institutional custody, wallet compatibility and unmigrated funds, and suggested output structures supporting quantum-resistant signatures plus hybrid schemes combining ECDSA/Schnorr and quantum-resistant authorisation.
Coinbase says it custodies about 5% of Bitcoin and urges quantum-resistant migration
Coinbase says it holds about 5% of all Bitcoin in custody and has urged developers to start work now on quantum-resistant signatures, warning that consensus changes and ecosystem migration could take years. It proposed a flexible container design similar to BIP-360 and a phased 1-of-2 scheme compatible with multi-party computation key splitting.
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