Bitcoin Developers Propose 'Wait and React' Strategy to Counter Quantum Threat

The Bitcoin community is considering a novel approach to mitigate the potential risks posed by quantum computing: delaying the implementation of protective measures until an attacker demonstrates their capabilities. However, this plan relies on the assumption that the first entity to exploit the vulnerability will claim a reward rather than pursuing a potentially massive heist. A recent proposal outlines a 'canary' system, which involves placing a small amount of bitcoin in a special address that can only be accessed by a quantum-capable attacker. If the attacker spends the funds, it will serve as public proof that the threat is real, triggering a network-wide freeze of older wallets. This approach is designed to provide an alternative to a fixed five-year timeline for imposing restrictions on vulnerable addresses. The proposal also includes a financial incentive, allowing users to contribute to a bounty that will be awarded to the first entity to demonstrate a quantum attack. Critics argue that a pre-set timeline, as outlined in BIP-361, could be overly restrictive and undermine the core principles of Bitcoin. The new proposal aims to strike a balance between security and flexibility, but it rests on the uncertain assumption that the first attacker will prioritize the bounty over the potential spoils of a large-scale theft.