Bitcoin
Coinbase Explores Post-Quantum Custody Frameworks for Digital Assets
The custodian is adapting its security infrastructure to accommodate future quantum-resistant cryptographic standards.
Coinbase is developing institutional custody infrastructure designed to withstand potential security threats posed by future quantum computing systems, according to its head of cryptography, Yehuda Lindell. Speaking on MARA Foundation TV, Lindell stated that the exchange is preparing for multiple cryptographic signing models, as blockchains may adopt varying post-quantum standards.
The company currently safeguards approximately $250 billion in digital assets for institutional clients such as BlackRock. Its existing custody operations rely heavily on Multi-Party Computation (MPC), an off-chain cryptographic method where private key shares are divided among different parties to eliminate single points of failure during transaction signing.
Because several emerging post-quantum signature algorithms may not easily support standard MPC protocols, Coinbase is evaluating alternative custody models. The firm is researching a fallback architecture that integrates post-quantum threshold decryption alongside programmable Hardware Security Modules to maintain security across different blockchain implementations.
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