Adam Back, CEO of Blockstream, has played down the immediate threat of quantum computing to the Bitcoin network, but stressed the importance of preparing for the future. As a pioneer in the field of cryptography, dating back to the 1990s, Back argued that while the risk of quantum computing 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 notion 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 emphasized 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 the potential threat and give users the option to migrate to quantum-resistant key formats over the next decade.
This timeline is in line with 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 in 2024. Back also highlighted the ongoing research and deployment efforts across the ecosystem, citing a dedicated team of researchers working on the issue and the early adoption of quantum-resistant technologies on Blockstream's Liquid network.
The main challenge for the industry is to coordinate a gradual and orderly migration to new security measures before the quantum threat becomes imminent.