Bitcoin Developers Propose a Reactive Approach to Mitigate 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 imposing a pre-emptive freeze on vulnerable coins, the proposal advocates for a 'wait and react' strategy. 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 once the threat is demonstrated. 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. However, this approach relies on the assumption that the attacker will choose to claim the bounty instead of maximizing their profit through stealthy theft. The 'canary' system is designed to reduce the risk of premature disruption to users, but it also introduces a level of uncertainty, as it is unclear whether the first entity capable of breaking Bitcoin's security would prioritize the bounty over a potentially massive heist. This uncertainty raises concerns about the network's ability to respond effectively to a worst-case scenario, and the potential consequences of failing to prevent a catastrophic event.