According to Blockstream CEO Adam Back, the threat of quantum computing to the Bitcoin network is more of a long-term concern than an immediate danger. However, he emphasizes that the industry must still prepare 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 interview with Bloomberg, Back pointed out that current quantum hardware lacks error correction, supporting the findings of 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 a short-term threat to cryptographic systems. Back's primary concern is not to dismiss the threat but to ensure that the industry responds at the right time.
He believes that it is crucial to prepare Bitcoin for the potential risks and give users the option to migrate their keys to a quantum-resistant format, allowing for a gradual transition over the next decade. This timeline is in line with recent developments in post-quantum cryptography, which is transitioning from theoretical concepts to practical implementation, particularly after the standardization of guidelines by NIST in late 2024. Back also highlighted the ongoing research and deployment efforts across the ecosystem, citing a dedicated team of 20 researchers working on this issue and publishing papers. He mentioned Blockstream's Liquid network as an early testing ground for these innovations.
The main challenge for the industry is not to react to a sudden breakthrough but to coordinate a slow and orderly migration before the risk becomes urgent.