The 'Hourglass' proposal, a quantum soft fork aimed at safeguarding Bitcoin, was discussed at the Quantum Bitcoin Summit 2025. The initiative seeks to protect Satoshi Nakamoto's Bitcoins from potential quantum computing threats. The proposal, presented by MARA's Director of Engineering, addresses the challenges of achieving consensus and adapting user behavior to mitigate risks of chain splits and market uncertainty. The summit highlighted the urgency of proactive measures against quantum computing's potential to disrupt Bitcoin's security. Discussions included the game theory implications of a quantum breakthrough and the necessity for revisions and enforcement mechanisms to ensure network integrity. The event underscored the existential threats posed by quantum advancements, emphasizing the need for immediate action to secure Bitcoin's future.