Bitcoin quantum security has moved onto the industry agenda after Coinbase outlined a plan to prepare Bitcoin infrastructure for quantum computing advances.
Coinbase chief executive Brian Armstrong said quantum technology does not threaten Bitcoin. Even so, he said the industry must begin preparing before fault-tolerant quantum computers become capable of challenging the cryptography protecting blockchain networks.
The announcement accompanied the launch of the Bitcoin Security Consortium, whose members include Coinbase, BlackRock, Fidelity Digital Assets, Block, Strategy, Anchorage Digital, ARK Invest, Blockstream and Galaxy.
Coinbase advances post-quantum custody systems
Armstrong said the timing of a capable quantum computer remains uncertain, making early preparation necessary. Coinbase established an Independent Advisory Board on Quantum Computing and Blockchain earlier this year to assess risks and recommend practical responses.
The board concluded that blockchain cryptography will require replacement. It identified migration as the greater difficulty, since millions of users and decentralized networks would need to coordinate upgrades across wallets, custody systems and protocol infrastructure.
Coinbase said its proprietary CoreKMS platform currently protects about 99.9% of the digital assets held in custody. The company has started developing PQ-CoreKMS, a post-quantum version of the key management system.
Within the next year, Coinbase plans to introduce an automated signing pipeline using secure enclaves, threshold cryptography and secret-sharing technology. The system will support post-quantum signature algorithms as blockchain networks adopt new standards.
The company is also reviewing cryptographic systems across its operations. Migration priorities are ranked by system importance, exposure and implementation complexity, with milestones intended to trigger future upgrades. Coinbase is separately evaluating how Ethereum’s post-quantum roadmap could affect Base, its Layer 2 network.
Bitcoin Security Consortium backs research funding
Coinbase will host a working session with Stanford in August, bringing together Bitcoin Core developers, cryptographers and researchers to examine practical migration strategies. The company said sessions will continue as technical work develops.
As a founding consortium member, Coinbase joined eight other organizations in committing $15 million over three years to developers, researchers and groups focused on Bitcoin security. Members will not direct Bitcoin development or protocol decisions. Instead, they will decide which security projects receive support.
Coinbase engineers will also participate in open-source work supporting proposals including BIP-360 and other post-quantum migration initiatives.
Industry support grows around long-term readiness
The consortium plans to publish information about Bitcoin security progress for investors and the public. BlackRock digital assets head Robert Mitchnick said Bitcoin Core developers are performing valuable work and that additional funding can support the network’s long-term security.
The participants did not disclose individual contributions or identify initial funding recipients. They also did not clarify whether Galaxy’s $5 million Quantum Spending Plan for quantum signatures, wallet migration and security audits forms part of the consortium’s combined commitment.
