Bitcoin Community Divided Over Quantum Computing Threat

The Bitcoin community is deeply divided over the best approach to address the growing threat of quantum computing. At Paris Blockchain Week, Adam Back, CEO of Blockstream, emphasized the need for Bitcoin developers to begin building optional quantum-resistant upgrades. This stance is in contrast to a recent proposal by Jameson Lopp, which suggests freezing vulnerable coins on a fixed timeline. Back argued that preparation and controlled changes are safer than reacting to a crisis, pointing to his company's work on testing quantum-resistant transaction signatures on the Liquid network. He believes that the 2021 Bitcoin upgrade, Taproot, provides the flexibility to accept new signature methods without disrupting the network. Meanwhile, Lopp's proposal, BIP-361, aims to phase out quantum-vulnerable addresses over five years and freeze non-compliant coins, including those attributed to Bitcoin's creator, Satoshi Nakamoto. The disagreement between Back and Lopp represents the core of Bitcoin's quantum debate, with Back trusting in the community's ability to respond quickly to a sudden quantum breakthrough and Lopp advocating for a pre-scheduled freeze to avoid disorderly migration.