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 imposing a pre-emptive freeze on vulnerable coins, the proposed 'wait and react' strategy would only take action if a quantum-capable attacker is detected. This approach is based on a 'canary' system, where a small amount of bitcoin is placed 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 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 theft, which may not be a reliable bet. The proposal is designed as an alternative to a fixed five-year timeline for imposing restrictions on older bitcoin wallets, which has been met with criticism for being 'authoritarian and confiscatory'. The new approach aims to balance the need to protect the network from potential threats with the need to respect the principles of decentralization and user control that underpin the Bitcoin protocol.