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

A recent proposal is sparking debate among Bitcoin developers, suggesting a shift in the network's response to potential quantum computing threats. Instead of imposing a pre-scheduled freeze on vulnerable coins, the proposal recommends a 'wait and react' approach, where the network would only take action if a quantum-capable attacker demonstrates their capabilities. This approach relies on a 'canary' system, which would trigger a network-wide restriction on older bitcoin wallets if a quantum attacker unlocks a special address. The proposal also includes a bounty system, where users can contribute bitcoin to reward the first entity to demonstrate a quantum attack publicly. However, this approach assumes that the attacker will claim the bounty rather than attempting to steal millions of bitcoin, which some critics argue is an uncomfortable bet. The proposal is designed as an alternative to a controversial plan that would impose restrictions on a fixed five-year timeline, regardless of whether quantum computers are actually capable of attacking Bitcoin's blockchain. The 'wait and react' strategy aims to reduce the risk of disrupting users prematurely, but it may not be enough to prevent a potential catastrophe if the bet fails.