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 implementing a pre-emptive freeze on vulnerable wallets, the proposal involves waiting for a quantum-capable attacker to demonstrate their capabilities and then triggering a network-wide response. 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 would serve as proof that the quantum threat is real and trigger a network-wide freeze of older wallets. The proposal also includes a bounty system to incentivize the first entity to demonstrate a quantum attack, allowing them to claim a reward rather than exploiting the vulnerability for personal gain. This approach is designed to provide an alternative to a fixed five-year timeline for phasing out vulnerable addresses, which has been met with criticism for being authoritarian and confiscatory. However, the proposal's success hinges on the assumption that the first entity capable of breaking Bitcoin's security will choose to claim the bounty rather than carry out a large-scale theft, a bet that cuts against the network's historical emphasis on worst-case scenario planning.