AI infrastructure / 2 companies

Provenance

Telling real from AI-made: watermarks, signed content and deepfake detection.

How this layer works: the security research

Pangram

A detector that marks which parts of a text are AI-written, with an API.

Pangram publishes its model cards, its false-positive rate and per-model detection scores, and offers a free daily allowance, so its claim to tell human writing from AI writing can be checked by hand.

since October 2026

Provenance

Trufo

C2PA signing certificates, a signing API and watermarks so media carries its origin.

Trufo sells the signing and watermark pieces the EU's AI-content marking rule points to, and publishes a Python library, test-mode keys and a status page, so what it does to a file can be checked by hand.

since October 2026

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