According to Blockstream CEO Adam Back, the threat of quantum computing to the Bitcoin network is more theoretical than immediate, but the industry must still take proactive steps to prepare. With a background in cryptography dating back to the 1990s, Back emphasized that while quantum risk is a real concern, it is not yet a practical threat. In a recent interview with Bloomberg, he noted that current quantum hardware lacks error correction, aligning with the findings of two recent papers that highlight the long-term nature of this risk.
Back's central argument is not about dismissing the threat, but about timing the response correctly. He advocates for preparing Bitcoin and giving users the option to migrate their keys to a quantum-ready format, allowing for a decade-long transition period. This timeline is supported by the progress being made in post-quantum cryptography, particularly after the standardization of PQC by NIST in late 2024. Back also highlighted the ongoing research and deployment efforts across the ecosystem, including a 20-person research team working on implementing post-quantum solutions, with Blockstream's Liquid network serving as a key testing ground.
The challenge for the industry is to coordinate a gradual and orderly migration before the quantum threat becomes urgent.