Comment by alwillis

Um… that's already a thing [1]:

    TL;DR: What is C2PA in 60 seconds

    What: An open technical standard for embedding cryptographically signed provenance data inside digital media files.

    Who: Created by a coalition founded by Adobe, Arm, BBC, Intel, Microsoft, and Truepic in February 2021.

    How: A C2PA Manifest (also called a Content Credential) travels inside the file and records who made it, when, and what tools were used.

    Why: Deepfake incidents surged from 500,000 to 8 million cases between 2023 and 2025. Provenance gives media a verifiable chain of custody.

[1]: https://c2paviewer.com/articles/what-is-c2pa