Bitcoin Developers Propose Quantum Defense Measures, Potentially Freezing Vulnerable Coins

The promise of Bitcoin's security is being reevaluated as developers propose a measure to defend against potential quantum computer attacks. This measure, known as Bitcoin Improvement Proposal (BIP)-361, could result in the freezing of coins in vulnerable addresses, rendering them unusable. The proposal aims to protect Bitcoin's blockchain from being compromised by sufficiently powerful quantum machines, which could use a public key to reverse-engineer a private key and steal funds. Approximately 6.7 million BTC are currently stored in vulnerable addresses. The proposed solution involves a three-phase migration process, starting with blocking new bitcoin from being sent to old-style addresses, followed by rendering old-style signatures invalid, and finally, a potential rescue phase using zero-knowledge proofs to recover frozen coins. However, the community is pushing back against the proposal, citing concerns over the authoritarian and confiscatory nature of the measure, which they believe undermines Bitcoin's core principle of sovereign control over funds.