Adam Back, CEO of Blockstream, has downplayed the immediate threat of quantum computing to the Bitcoin network, but emphasizes the importance of preparing for the future. As a pioneer in Bitcoin's history with a background in cryptography dating back to the 1990s, Back argues that while the theoretical risk of quantum computing is real, it is not yet a practical concern. In a recent interview with Bloomberg, Back noted that current quantum hardware lacks error correction, a point supported by two recent papers that highlight the long-term rather than near-term risk to cryptographic systems.
However, Back stresses that the focus should be on timing the response correctly, preparing Bitcoin for a potential quantum threat, and giving users the option to migrate to quantum-ready formats over the next decade. This timeline aligns with the ongoing development of post-quantum cryptography, which is transitioning from theoretical to practical implementation following the finalization of NIST standards in late 2024. Back highlights that preparation is already underway across the ecosystem, with a dedicated research team working on publishing papers, implementing solutions, and deploying them on networks like Blockstream's Liquid.
The challenge for the industry is to coordinate a gradual and orderly migration before the quantum threat becomes urgent.