Adam Back, CEO of Blockstream, has downplayed the immediate threat of quantum computing to the Bitcoin network, but stresses the importance of preparing for the future. As a pioneer in Bitcoin's cryptographic development, dating back to the 1990s, Back argues that while quantum risk is theoretically real, it is not yet a practical concern.
In a recent interview with Bloomberg, Back noted that current quantum hardware lacks error correction, aligning with recent research papers that suggest quantum computing poses a long-term rather than near-term threat to cryptographic systems. However, Back emphasizes that the focus should be on timing the response correctly, rather than dismissing the threat.
He suggests that the industry should prepare Bitcoin for a potential quantum threat and give users the option to migrate to quantum-resistant keys over the course of a decade. This timeline is supported by the development of post-quantum cryptography, which is transitioning from theoretical to practical implementation, following the standardization of guidelines by the National Institute of Standards and Technology (NIST) in late 2024. Back highlights that research and deployment efforts are already underway, with a team of 20 researchers working on post-quantum solutions and implementing them on platforms like Blockstream's Liquid network. The challenge for the industry is to coordinate a gradual and orderly migration to quantum-resistant systems before the threat becomes urgent.