hiltonlee981/social-upload-c2pa-xmp-notes

C2PA / XMP before social upload

Many Hugging Face image pipelines export a raster that later goes to Instagram or TikTok. Platforms may read file-level provenance (C2PA, XMP AI fields), not only pixels.

Keep two files:

1. 1.Master — archive with full EXIF/IPTC (and credentials if you need them).
2. 2.Social — the exact bytes for this week’s upload.

Workflow:

1. 1.Export the file you will actually upload.
2. 2.Copy it to a social filename (do not rely on chat-app recompress).
3. 3.Inspect for C2PA / XMP AI markers and GPS if privacy matters.
4. 4.If you choose to strip those fields, clean only the social copy.
5. 5.Upload the cleaned copy; keep the master offline.

For a last step that stays on your machine, use a browser-local pass for C2PA and XMP on social exports, then attach that file. This addresses file-level triggers only — not visible watermarks or pure vision detectors. Platform disclosure rules still apply.