According to Blockstream CEO Adam Back, the impact of quantum computing on the Bitcoin network is still a long way off, but it is essential for the industry to start preparing. As a pioneer in the field of cryptography, with a history dating back to the 1990s, Back emphasized that the risk posed by quantum computing is theoretically real but not yet practically significant, in a recent interview with Bloomberg. He noted that current quantum hardware lacks error correction, a point reinforced by two recent research papers that highlight the long-term nature of this risk. While the exact timeline for quantum computers to become a threat is uncertain, Back stressed that it is crucial to prepare Bitcoin for this eventuality by offering users the option to migrate to quantum-resistant key formats, allowing for a gradual transition over the next decade.
This timeline is supported by the development of post-quantum cryptography, which is advancing from theoretical concepts to practical implementation, particularly following the standardization of guidelines by NIST in 2024. Back highlighted that research and deployment efforts are already underway across the ecosystem, with a dedicated team working on publishing research papers and implementing solutions, such as the Liquid network.
The primary challenge for the industry is to coordinate a smooth and orderly migration before the quantum threat becomes imminent.