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 waiting for a quantum-capable attacker to demonstrate their capabilities and then reacting accordingly. This 'wait and react' strategy relies 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. If the attacker demonstrates their capabilities, a network-wide freeze of older wallets is triggered. The proposal also includes a financial incentive, where users can contribute to a bounty that rewards the first entity to demonstrate a quantum attack publicly. However, this approach assumes that the attacker will prioritize claiming the bounty over executing a potentially massive theft. This assumption has raised concerns, as it goes against the network's historical emphasis on preventing worst-case scenarios. The proposal is designed as an alternative to a fixed five-year timeline for addressing the quantum computing threat, which has been criticized for being authoritarian and confiscatory.