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

The Bitcoin community is considering a significant shift in its approach to addressing the potential threat of quantum computing. Instead of imposing a pre-emptive freeze on vulnerable coins, developers are exploring a 'wait and react' strategy that relies on the first quantum-capable attacker to reveal their capabilities in exchange for a bounty. This approach, outlined in a recent proposal by BitMEX Research, involves placing 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 once the threat is confirmed. The proposal is designed to provide an alternative to the controversial BIP-361, which would impose a fixed five-year timeline for phasing out vulnerable addresses. Critics of BIP-361 have argued that it undermines Bitcoin's core principle of private key holder control, and could result in the permanent freezing of unmigrated coins. The new proposal attempts to balance the need to protect the network from quantum threats with the need to preserve user control and flexibility. However, it relies on the assumption that the first entity capable of breaking Bitcoin's security will choose to claim the bounty rather than exploiting the vulnerability for personal gain. This assumption has raised concerns among some members of the Bitcoin community, who argue that it is overly optimistic and could put the network at risk of a catastrophic attack.