Bitcoin Developers Propose 'Wait and React' Strategy to Counter Quantum Computing Threats

The Bitcoin community is considering a novel approach to address the potential threat of quantum computing to the network's security. Instead of imposing a pre-emptive freeze on vulnerable coins, the proposal involves a 'wait and react' strategy that would only trigger a network-wide restriction if a quantum-capable attacker demonstrates their capabilities on-chain. This approach is based on a 'canary' system, where a small amount of bitcoin is placed in a special address that can only be unlocked by a quantum-capable attacker, serving as public proof of the threat and triggering a network-wide freeze. The proposal also includes a financial incentive, allowing users to contribute to a bounty that rewards the first entity to demonstrate a quantum attack, rather than attempting to exploit the vulnerability for personal gain. However, this approach relies on the assumption that the first entity capable of breaking Bitcoin's security would claim the bounty rather than executing a large-scale theft, which may not be a reliable bet. The proposal is designed as an alternative to BIP-361, a controversial plan that would impose a fixed five-year timeline for implementing security measures, which has been criticized for being 'authoritarian and confiscatory'. The new proposal aims to balance the need for security with the need to preserve Bitcoin's core principles of decentralization and user control.