Everyone looking at a clip online now asks the same thing: was this changed, and was it made by AI? Detection models answer with a score nobody can audit. There's another way to ask, at least for files that carry it: read the file's own signed provenance record, C2PA Content Credentials, and report exactly what that record establishes and what it doesn't. We built a free checker that does that, and before telling anyone about it we ran it on real public files from OpenAI, Adobe, Capture One a...