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 the importance of preparing for this potential risk. As a pioneer in Bitcoin's history, Back has been involved in cryptography since the 1990s and has outlined his stance in a recent interview with Bloomberg.
He highlights that current quantum hardware lacks error correction, aligning with recent research that suggests quantum computing poses a long-term rather than immediate threat to cryptographic systems. Back stresses that the key is to time the response correctly, allowing for the migration of keys to quantum-resistant formats over the course of a decade.
This timeline is supported by the development of post-quantum cryptography, which is transitioning from theoretical to practical implementation following the standardization by NIST. Back notes that preparation is already underway, with research teams working on publishing papers and deploying solutions, such as Blockstream's Liquid network. The main challenge for the industry is to coordinate a gradual and orderly migration before the risk becomes critical.