Experts Propose Alternative Strategy to Counter Quantum Threat to Bitcoin

A recent proposal by BitMEX Research has sparked debate among Bitcoin developers, suggesting a shift in the network's response to potential quantum computing threats. Instead of imposing a preemptive freeze on vulnerable coins, the new strategy would only take action if an attacker demonstrates their capabilities. However, this approach relies on the assumption that the attacker will prioritize claiming a bounty over exploiting the vulnerability for personal gain. The proposed 'canary' system involves placing a small amount of bitcoin in a special address that can only be accessed by a quantum-capable attacker, triggering a network-wide freeze of older wallets if the funds are spent. This mechanism is designed to replace earlier plans for a fixed five-year timeline, which has been met with criticism for being overly restrictive. The new approach includes a financial incentive, allowing users to contribute to a bounty that would reward the first entity to demonstrate a quantum attack. Additionally, a 'safety window' would be introduced, making it more difficult for stealth attacks to occur. While this proposal aims to reduce the risk of premature disruption to users, it hinges on the uncertain bet that the first capable attacker will choose to claim the bounty rather than execute a potentially massive theft. This gamble goes against Bitcoin's historical emphasis on preventing worst-case scenarios, and the network's reluctance to intervene in such events after the fact.