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: rather than preemptively freezing vulnerable coins, the network would wait for an attacker to demonstrate their capabilities and then react. This 'wait and react' strategy 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 address is accessed, it would trigger a network-wide freeze of older wallets. The proposal is designed to provide an alternative to a fixed five-year timeline for implementing restrictions, which has been met with criticism for being overly authoritarian. Instead, the canary system would allow the network to respond to a real and present threat, rather than anticipating one. To incentivize attackers to reveal their capabilities, the system includes a bounty that would reward the first entity to demonstrate a quantum attack. However, this approach assumes that the attacker would be motivated by the bounty rather than the potential for massive financial gain, which some argue is an uncomfortable bet. If the bet fails, the network could be left vulnerable to a devastating attack, highlighting the challenges of balancing security with the need to preserve the decentralized and permissionless nature of Bitcoin.