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 touch them without the private key. However, this promise is now being challenged by the developer community itself, as they attempt to build defenses against future quantum computers that could compromise the Bitcoin blockchain. A recently updated proposal, Bitcoin Improvement Proposal (BIP)-361, suggests forcing bitcoin holders to migrate their coins to new quantum-resistant addresses or face having their coins frozen permanently by the network. This move is intended to protect against the potential risks posed by quantum computers, which could use a user's public key to reverse engineer their private key and drain their funds. The proposal has sparked backlash within the community, with some arguing that it goes against the fundamental principles of Bitcoin, which emphasizes sovereign control over funds. The proposed migration would occur in three phases, with the first phase blocking new bitcoin from being sent to old-style, quantum-vulnerable addresses, and the second phase rendering old-style signatures invalid, effectively freezing coins. A potential rescue phase is also being researched, which could allow holders with frozen wallets to prove ownership using a zero-knowledge proof. The community is divided, with some seeing the proposal as a necessary defensive measure, while others view it as an authoritarian and confiscatory move.