@tao@mathstodon.xyz I agree that priority based on rushed, unverified AI-generated announcements is becoming problematic, but replacing timestamps with the ability to give a scientific lecture risks creating a different and perhaps older problem: access. Established researchers can obtain seminar invitations, audiences, and institutional attention almost immediately, while unknown or independent researchers may struggle even to be heard. A public, immutable timestamp for a sufficiently complete and verifiable proof is at least neutral with respect to reputation. Lectures and Q&A are excellent tools for validation and demonstrating understanding, but I would hesitate to make access to them the criterion for priority itself.