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 threats. A recently updated proposal, Bitcoin Improvement Proposal (BIP)-361, outlines a plan to migrate coins to quantum-resistant addresses or risk having them frozen by the network. This move is intended to protect against the risk of quantum computers compromising Bitcoin's blockchain and stealing coins. The proposal, led by Jameson Loop and other cryptographers, has sparked debate in the community, with some arguing it contradicts Bitcoin's fundamental principle of sovereign control over funds. The plan involves a three-phase approach, 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. With approximately 6.7 million BTC in vulnerable addresses, the community is divided on the proposal, with some seeing it as a necessary defensive measure and others as an overreach of authority.