According to Blockstream CEO Adam Back, the threat posed by quantum computing to the Bitcoin network is more theoretical than immediate, but the industry must still take proactive measures. As a pioneer in Bitcoin's history, with a background in cryptography dating back to the 1990s, Back emphasized that while the risk is real, it is not yet a practical concern in an interview with Bloomberg.
He pointed out that current quantum hardware lacks error correction, a sentiment echoed by recent research papers that approach the issue from different angles, suggesting that quantum computing poses a long-term rather than short-term threat to cryptographic systems. However, Back's primary concern is not dismissing the threat but rather ensuring a timely response. He believes that preparing Bitcoin and providing users with the option to transition their keys to a quantum-resistant format over the course of a decade is crucial, regardless of the exact timeline for quantum computers to become a significant threat. This timeline aligns with the ongoing transition of post-quantum cryptography from theoretical to practical implementation, particularly following NIST's standardization in late 2024.
Back highlighted that preparation is already underway across the ecosystem, with a dedicated research team working on publishing papers, implementing solutions, and deploying them, citing Blockstream's Liquid network as an early example. The main challenge for the industry is coordinating a gradual and orderly migration before the risk becomes pressing.