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

The Bitcoin community is considering a new approach to addressing the potential threat of quantum computing to the network's security. Instead of imposing a pre-scheduled freeze on vulnerable coins, the proposal involves a 'wait and react' strategy that relies on a canary system to detect and respond to quantum-capable attackers. This system would place 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 if the address is accessed. The proposal also includes a financial incentive, allowing users to contribute to a bounty that rewards the first entity to demonstrate a quantum attack publicly. However, this approach assumes that the first entity capable of breaking Bitcoin's security would claim the bounty rather than attempting a large-scale theft. This assumption has raised concerns, as it goes against the network's design principle of preventing worst-case scenarios. The proposal is seen as an alternative to a controversial plan that would impose a fixed five-year timeline for phasing out vulnerable addresses, which has been criticized for being 'authoritarian and confiscatory.' The new approach aims to reduce the risk of disrupting users prematurely while providing a more flexible and responsive solution to the potential quantum threat.