Bitcoin Developers Propose Quantum Defense Measures, Potentially Freezing Vulnerable Coins

The promise of Bitcoin's security is being reevaluated as developers propose measures to defend against potential quantum computer attacks. A recently updated proposal, Bitcoin Improvement Proposal (BIP)-361, aims to protect the network by freezing coins in quantum-vulnerable addresses. This move is in response to warnings that a sufficiently powerful quantum machine could compromise Bitcoin's blockchain, allowing hackers to steal coins. The proposal involves a three-phase migration process, starting with blocking new bitcoin from being sent to vulnerable addresses, followed by rendering old-style signatures invalid, and potentially introducing a rescue phase using zero-knowledge proofs. However, the community is pushing back against the idea, citing concerns that it undermines Bitcoin's fundamental principle of sovereign control over funds. The proposal's authors argue that it is a defensive measure necessary to protect the network and its users. With approximately 6.7 million BTC in vulnerable addresses, the need for a solution is pressing, but the community remains divided on the best approach.