Llama Guard 4 + C2PA Content Credentials 2.0: the creator-facing safety stack — input/output filtering + media provenance, both open-weight / open-standard

Combining Meta Llama Guard 4 (open-weight safety classifier with multi-class taxonomy for unsafe content) and C2PA Content Credentials 2.0 (cryptographic provenance spec for media assets, with model + tool attestations and tamper-evident manifests) gives creators a stack they can actually deploy on their own platforms. Llama Guard 4 lets creators filter input and output for unsafe content; C2PA lets creators attach provenance metadata to their media so downstream readers can verify origin and model / tool chain. Both are open-weight / open-standard, so creators do not need a vendor relationship to use them.