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

A novel approach is being considered by Bitcoin developers to address the potential threat of quantum computing to the network's security. Instead of imposing a pre-scheduled freeze on vulnerable coins, the proposed system would only take action if a quantum-capable attacker demonstrates their capabilities on the blockchain. This 'wait and react' strategy involves placing a small amount of bitcoin in a special address that can only be unlocked by a quantum-capable attacker, triggering a network-wide freeze of older wallets if the address is accessed. The proposal also includes a bounty system to incentivize the first entity to demonstrate a quantum attack, rather than attempting to exploit vulnerable wallets for personal gain. However, this approach relies on the assumption that the first entity to develop quantum capabilities will choose to claim the bounty rather than carrying out 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 risk of catastrophic events. The proposed system is designed to provide an alternative to a fixed five-year timeline for freezing vulnerable coins, which has been criticized for being 'authoritarian and confiscatory'. The new approach aims to strike a balance between security and flexibility, but its success depends on the unpredictable behavior of potential attackers.