Bitcoin Community Divided Over Quantum Computing Threat

The debate over the quantum computing threat to Bitcoin has sparked a disagreement among its prominent developers. Adam Back, CEO of Blockstream, emphasized the importance of preparation and gradual implementation of quantum-resistant upgrades at the Paris Blockchain Week. He suggested that Bitcoin should start building these upgrades now, despite the current limitations of quantum computers. Back pointed to Blockstream's experiments with quantum-resistant transaction signatures on the Liquid network and highlighted the flexibility of the 2021 Taproot upgrade. In contrast, Jameson Lopp's proposal, BIP-361, recommends a fixed five-year timeline to phase out quantum-vulnerable addresses and freeze non-compliant coins. Back's approach is seen as an alternative to Lopp's forced migration plan, with the two positions representing the core of the disagreement in the Bitcoin community. While Back believes that developers can respond quickly to a sudden quantum breakthrough, Lopp argues that a scheduled freeze is necessary to avoid a chaotic migration.