According to Blockstream CEO Adam Back, the impact of quantum computing on the Bitcoin network is a long-term concern rather than an immediate threat. However, he emphasizes the importance of preparing for the potential risks.
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 Bloomberg interview, Back pointed out that current quantum hardware lacks error correction, a sentiment echoed by two recent research papers.
These papers, one a technical analysis and the other a satirical piece, both suggest that quantum computing poses a long-term rather than short-term risk to cryptographic systems. Back's primary concern is not dismissing the threat but rather ensuring a timely response. He suggests that it is prudent to prepare Bitcoin for the potential risks and provide users with the option to migrate their keys to a quantum-resistant format, allowing for a decade-long transition period. This timeline is in line with recent developments in post-quantum cryptography, which is transitioning from theoretical to practical implementation, particularly after the standardization of guidelines by NIST in late 2024.
Back also highlights the ongoing research and deployment efforts across the ecosystem, citing a 20-person research team working on post-quantum cryptography and the implementation of these solutions on platforms like Blockstream's Liquid network. The main challenge for the industry is to coordinate a gradual and orderly migration before the risk becomes critical.