Adam Back, CEO of Blockstream, has played down the immediate threat of quantum computing to the Bitcoin network, but stresses the importance of preparation. As a pioneer in Bitcoin's history, with a background in cryptography dating back to the 1990s, Back argues that while the theoretical risk of quantum computing is real, it is not yet a practical concern.
In a recent interview with Bloomberg, Back pointed out that current quantum hardware lacks error correction, a view supported by two recent research papers. These papers, one a technical analysis and the other a satirical take, both suggest that quantum computing poses a long-term rather than short-term risk to cryptographic systems. Back's focus is not on dismissing the threat, but on timing the response correctly.
He believes that preparing Bitcoin for a potential quantum threat and giving users the option to migrate to quantum-resistant keys over the next decade is a prudent approach. This timeline aligns with the development of post-quantum cryptography, which is transitioning from theoretical to practical implementation, particularly after the standardization of guidelines by NIST in 2024.
Back highlights that research and deployment efforts are already underway, with a team of 20 researchers working on this issue and publishing papers. He cites Blockstream's Liquid network as an example of early implementation. The challenge for the industry is to coordinate a gradual and orderly migration to post-quantum security measures before the risk becomes critical.