Bitcoin Developers Propose Quantum Defense Measures, Potentially Freezing Vulnerable Coins

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 potential quantum computer attacks 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 risk having them frozen permanently by the network. This move has been met with backlash from the community, who cite it as a violation of Bitcoin's core principle of sovereign control over funds. The proposal is designed to protect against the risks posed by quantum computers, which could potentially reverse-engineer private keys and drain funds from vulnerable addresses. With approximately 6.7 million BTC in vulnerable addresses, the need for a solution is pressing. The proposed migration would occur in three phases, with the first phase blocking new bitcoin from being sent to old-style addresses, the second phase rendering old signatures invalid, and the third phase potentially allowing holders to prove ownership and recover frozen coins. While developers view this as a defensive measure, the community remains divided on the issue.