Bitcoin Developers Propose a Reactive Approach to Mitigate 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 implementing a pre-emptive freeze on vulnerable coins, developers are discussing a 'wait and react' strategy that would only trigger a network-wide restriction if a quantum-capable attacker demonstrates their capabilities. This approach, outlined in a proposal by BitMEX Research, involves placing a small amount of bitcoin in a special address that can only be unlocked by a quantum attacker, serving as a 'canary' to detect and respond to potential threats. The proposal also includes a bounty system, where users can contribute bitcoin to reward the first entity to demonstrate a quantum attack, rather than attempting to exploit vulnerable wallets. While this approach reduces the risk of premature disruption to users, it relies on the assumption that the first entity capable of breaking Bitcoin's security would claim the bounty rather than attempting a large-scale theft. This assumption has raised concerns, as it goes against the network's historical emphasis on preventing worst-case scenarios and minimizing the need for protocol-level interventions.