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

The Bitcoin community is considering a novel approach to addressing the potential threat of quantum computing to the network's security. Instead of imposing a pre-emptive freeze on vulnerable coins, the new proposal involves a 'wait and react' strategy. This approach relies 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. If the attacker accesses the funds, it will trigger a network-wide restriction on older bitcoin wallets. 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 publicly. However, this approach assumes that the attacker will claim the bounty rather than attempting to steal vulnerable coins, which may not be a reliable assumption. The proposal is an alternative to a previously suggested 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 potential quantum threats with the need to respect the principles of user control and autonomy that underpin the Bitcoin protocol.