A new Bitcoin Improvement Proposal, co-authored by Jameson Lopp and six other developers, seeks to address the threat posed by quantum computing to the Bitcoin network. The proposal outlines a phased approach to phase out address types vulnerable to quantum attacks, with the first stage prohibiting transactions to these addresses and freezing the Bitcoins for five years. This move is in response to research indicating that approximately 25% of Bitcoin, including 1 million Bitcoins linked to Satoshi Nakamoto, is at risk. The proposal encourages the adoption of post-quantum address types to safeguard the network's cryptographic integrity.