Brian Armstrong, CEO of Coinbase, has raised a warning about Bitcoin’s vulnerability to future quantum computing developments, despite the current absence of an immediate threat. His comments came alongside the launch of the Bitcoin Security Consortium, a coalition made up of major players including BlackRock, Fidelity Digital Assets, Block, and others, committing $15 million to prepare Bitcoin’s infrastructure for quantum resilience.
Armstrong emphasized that no one knows exactly when fault-tolerant quantum computers powerful enough to break current cryptographic defenses will appear, but the industry must start preparing now. Earlier this year, Coinbase established an Independent Advisory Board on Quantum Computing and Blockchain to assess realistic risks and suggest practical steps.
The board recognized that existing blockchain cryptography will eventually need replacement. However, the bigger challenge lies in migrating millions of users and decentralized networks smoothly to new standards. Armstrong pointed out that this coordination effort will be complex.
Currently, Coinbase’s CoreKMS platform secures nearly 99.9% of the digital assets in custody. The company has begun developing PQ-CoreKMS, an upgraded, post-quantum version of its key management system. Within the next year, Coinbase plans to deploy an automated signing system incorporating secure enclaves, threshold cryptography, and secret-sharing methods. This will enable support for post-quantum signature algorithms as blockchains start adopting updated cryptographic protocols.
Coinbase is also conducting a thorough review of its cryptographic infrastructure, prioritizing migration tasks based on each system’s importance, exposure level, and implementation complexity.
