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

The Bitcoin community is considering a novel approach to addressing 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 an 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 address is accessed, it will trigger a network-wide freeze on older wallets, thereby protecting them from potential theft. The proposal also includes a financial incentive, where users can contribute to a bounty that will be awarded to the first entity to demonstrate a quantum attack. This approach is designed to provide an alternative to a previously proposed fixed five-year timeline for phasing out vulnerable addresses, which has been criticized for being overly restrictive and potentially confiscatory. However, the success of this proposal hinges on the assumption that the first entity capable of breaking Bitcoin's security will choose to claim the bounty rather than exploiting the vulnerability for personal gain. This assumption has raised concerns, as it goes against the network's historical emphasis on preventing worst-case scenarios and minimizing the risk of catastrophic events.