According to Blockstream CEO Adam Back, the impact of quantum computing on the Bitcoin network is still a long way off, but the industry must start preparing now. As a pioneer in Bitcoin's history with a background in cryptography dating back to the 1990s, Back emphasized that the risk posed by quantum computing is theoretically real but not yet practically significant in an interview with Bloomberg.
He highlighted that current quantum hardware lacks error correction, a point supported by two recent papers that demonstrate the long-term rather than immediate threat quantum computing poses to cryptographic systems. Back stressed that the key issue is not dismissing the threat but responding at the right time. He suggested that preparing Bitcoin and providing users with the option to transition their keys to a quantum-resistant format over the next decade is the prudent course of action. This timeline aligns with the development of post-quantum cryptography, which is transitioning from theoretical to practical implementation following NIST's standardization in late 2024.
Back also noted that active preparation is underway across the ecosystem, with ongoing research and deployment, citing a dedicated 20-person research team and Blockstream's Liquid network as examples. The challenge for the industry is to manage a gradual and orderly migration before the quantum threat becomes critical.