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 fixed timeline for freezing vulnerable coins, developers are proposing a 'wait and react' strategy that relies on a 'canary' system to detect and respond to quantum attacks. This approach 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 threat is proven to be real. The proposal also includes a bounty system to incentivize the first entity to demonstrate a quantum attack, rather than exploiting the vulnerability for personal gain. However, this approach assumes that the attacker will prioritize claiming the bounty over maximizing their profits through theft, which may not be a reliable assumption. The proposal is designed to provide an alternative to a controversial plan that would impose a fixed five-year timeline for phasing out vulnerable addresses, which has been criticized for being 'authoritarian and confiscatory'. The new approach aims to balance the need to protect the network from quantum threats with the need to preserve the core principles of Bitcoin, including the control of private key holders.