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

The Bitcoin community is considering a new approach to addressing the potential threat of quantum computing to the network's security. Instead of imposing a pre-scheduled freeze on vulnerable coins, the proposal suggests waiting for an attacker to demonstrate their capabilities and then reacting accordingly. This 'wait and react' strategy relies on a canary system, which would place a small amount of bitcoin in a special address that can only be unlocked by a quantum-capable attacker. If the attacker demonstrates their capabilities by spending the funds, it would trigger a network-wide freeze on older wallets. The proposal also includes a financial incentive, allowing users to contribute to a bounty that would reward the first entity to demonstrate a quantum attack. However, this approach assumes that the attacker will be motivated by the bounty rather than seeking to maximize their profits through theft. Critics argue that this bet is uncomfortable and goes against the network's design principles, which prioritize security and decentralization. The proposal is seen as an alternative to BIP-361, which would impose a fixed five-year timeline for phasing out vulnerable addresses and invalidating old signature schemes. The debate surrounding this proposal highlights the challenges of balancing security with the need to preserve the core principles of the Bitcoin network.