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

The Bitcoin community is exploring a novel approach to address the potential threat of quantum computing to the network's security. Instead of implementing a pre-emptive freeze on vulnerable coins, developers are considering a 'wait and react' strategy that would only trigger a network-wide response if a quantum-capable attacker demonstrates their capabilities. This approach, outlined in a recent proposal by BitMEX Research, involves creating a 'canary' address that contains a small amount of bitcoin, which can only be unlocked by a quantum-capable attacker. If the attacker accesses the funds, it would serve as public proof that the threat is real, automatically triggering a network-wide freeze of older wallets. The proposal also includes a bounty system, where users can contribute bitcoin to incentivize the first entity to demonstrate a quantum attack, rather than exploiting the vulnerability for personal gain. However, this approach relies on the assumption that the attacker will claim the bounty rather than maximizing their profits through theft, which may not be a guaranteed outcome. The proposal is designed to provide an alternative to a fixed five-year timeline for implementing security measures, which has been met with criticism from some members of the community. The 'wait and react' strategy aims to minimize disruption to users while still providing a level of protection against potential quantum threats.