Quantum Threats Prompt Bitcoin Developers to Propose Defense Measures That Could Freeze Vulnerable Coins

The foundation of Bitcoin is built on the idea that no entity can access your coins without your private key. However, this promise is now being challenged by the developer community as they attempt to build defenses against potential quantum computer threats. A proposal, known as Bitcoin Improvement Proposal (BIP)-361, has been updated to include a plan to migrate coins to quantum-resistant addresses or risk having them frozen by the network. This move is in response to a recent Google report warning that a sufficiently powerful quantum machine could compromise the Bitcoin blockchain with less firepower than initially estimated. The proposal outlines a three-phase approach to migration, 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 proof. The community has expressed concerns over the proposal, citing it as authoritarian and confiscatory, while developers argue it is a necessary defensive measure to protect the Bitcoin ecosystem.