Bitcoin Developers Propose Freezing Coins to Counter Quantum Threats

The promise of Bitcoin has always been that users have full control over their coins, with no external entity able to access them without the private key. However, this promise is now being challenged by the developer community as they attempt to build defenses against future quantum computers. A recently updated proposal, Bitcoin Improvement Proposal (BIP)-361, suggests forcing bitcoin holders to migrate their coins to new quantum-resistant addresses or risk having them frozen permanently by the network. This move is intended to protect against the potential for a sufficiently powerful quantum machine to compromise the Bitcoin blockchain and steal coins. The proposal, put forward by Jameson Loop and other cryptographers, has sparked controversy within the community, with some arguing that it goes against the fundamental principles of Bitcoin. The proposal is divided into three phases, with the first phase blocking new bitcoin from being sent to old-style, quantum-vulnerable addresses, the second phase rendering old-style signatures invalid, and the third phase potentially allowing holders to recover frozen coins using zero-knowledge proof. While some see this as a necessary defensive measure, others view it as an overreach of authority and an attack on the principles of sovereignty and permissionless control.