– Edits that break the chain of provenance, or make it impossible to trace the video back to its original source. For example, if you capture an image with C2PA metadata and then save it to your phone’s photo album that doesn’t support C2PA v2.1 or higher, that may break the chain of provenance.

– Significant alterations to the video’s core nature or content, including its sounds or visuals.

– Edits that make the video incompatible with C2PA standards (version 2.1 and above).

https://www.theverge.com/2024/10/15/24271083/youtube-c2pa-captured-camera-label-content-credentials