According to Decrypt, Casa co-founder and CTO Jameson Lopp, along with five developers, has proposed a Bitcoin Improvement Proposal to address the threat of Quantum Computing, suggesting a gradual phasing out of the current types of addresses considered "quantum vulnerable." The proposal advocates for the establishment of incentive mechanisms to encourage users to migrate to post-quantum secure addresses, and in the future, will prohibit transfers to old addresses and restrict their spending within five years. The proposal points out that currently about 25% of Bitcoin is at risk, including 1 million BTC believed to belong to Satoshi Nakamoto.