According to Blockstream CEO Adam Back, the threat of quantum computing to the Bitcoin network is more theoretical than practical at present. However, he emphasizes that the industry must prepare for this potential risk. With a background in cryptography dating back to the 1990s, Back argues that while the current hardware lacks error correction, making it impractical for breaking crypto systems, it's essential to start preparing for a future where quantum computing could pose a threat. He suggests that the focus should be on timing the response correctly, rather than debating the timeline for quantum computers to become a threat.
Back proposes that the industry should give users the option to migrate their keys to a quantum-ready format over the course of a decade. This timeline aligns with the development of post-quantum cryptography, which is transitioning from theoretical to practical implementation, particularly after the standardization by NIST in late 2024.
Back notes that preparation is already underway across the ecosystem, with ongoing research and deployment, citing Blockstream's Liquid network as a testing ground. The main challenge for the industry is to coordinate a gradual and orderly migration before the quantum threat becomes imminent.