Adam Back, CEO of Blockstream, has played down the immediate threat of quantum computing to the Bitcoin network, but emphasized the importance of preparation. As a pioneer in the field of cryptography, dating back to the 1990s, Back argued that while quantum risk is theoretically real, it is not yet a practical concern. In a recent interview with Bloomberg, Back pointed out that current quantum hardware lacks error correction, a view supported by two recent research papers.
These papers, one a technical analysis and the other a satirical take, both suggest that quantum computing poses a long-term rather than short-term risk to cryptographic systems. However, Back stressed that the key issue is not whether to dismiss the threat, but rather to respond at the right time.
He suggested 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 in line with recent developments in post-quantum cryptography, which is transitioning from theoretical research 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, including a dedicated team of 20 researchers working on post-quantum solutions. He cited Blockstream's Liquid network as an example of an early testing ground for these new technologies.
The main challenge for the industry is to coordinate a gradual and orderly migration to post-quantum security measures before the quantum threat becomes urgent.