Coinbase, the U.S.-based crypto exchange giant, is taking proactive steps to address the looming threat of quantum computing to blockchain networks. The company has established an independent advisory board to evaluate and guide on the potential impact of quantum computing on blockchain cryptography. This move comes as a response to the growing concerns among financial leaders, such as Bridgewater founder Ray Dalio and VanEck CEO Jan van Eck, who fear that quantum computing could deter further institutional investment in crypto.
Blockchain networks rely on cryptography to ensure individual autonomy over digital assets. However, a cryptographically relevant quantum computer (CRQC) could render these systems unworkable, as anyone with such a computer could spend from any address. While cryptography can theoretically be upgraded to be quantum-resistant, the decentralized nature of blockchain networks makes this process more challenging than for centralized tech companies.
The Coinbase Independent Advisory Board on Quantum Computing and Blockchain will publish papers assessing threat levels, issue recommendations to institutions and developers, and respond to new breakthroughs in the quantum computing field. Board members include Scott Aaronson, Director of the Quantum Information Center at the University of Texas at Austin, and Dan Boneh, Co-Director of the Stanford Center for Blockchain Research.
Recent developments in quantum computing, such as Google's Willow chip, have reignited excitement around the prospect of real progress in this emerging technology. Technical organizations and institutions, such as the National Institute of Standards and Technology (NIST) and IBM, have outlined the mid-2030s as a time when fears over CRQCs will become more practical and real. Tech giants like Google and Amazon have already implemented changes to prepare for what has become known as Q-Day.
One of the reasons for the crypto space's proactive approach to quantum preparedness is the potential for widespread disruption if a CRQC appears without sufficient preparation. Decentralized systems are more difficult to upgrade than centralized tech companies, and the longer timeframe associated with crypto network upgrades means it makes sense to start working on this issue before it becomes an imminent threat.
However, the crypto market's increasing indistinguishability from traditional, centralized fintech could make it easier for the vast majority of the market to upgrade to deal with the quantum threat in a timely manner. Bitcoin, in particular, maintains a high degree of decentralization in its development process, which has made it extremely difficult to implement changes at the protocol level. The last improvement that altered the base protocol rules was Taproot, which was activated in 2021.
Bitcoin developers are cautious about hastily added upgrades for quantum computing, seeing them as potential security vulnerabilities. For now, some Bitcoin developers are working on the issue, including a draft Bitcoin Improvement Proposal (BIP), and the correct approach, according to longtime cypherpunk and Blockstream CEO Adam Back, is readiness for the worst-case scenario.
