Markproof

EU AI Act Article 50 marking and detection in one API call. Watermark and sign your AI-generated images and audio, and verify any file for both, in a single request.

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What it does

One API call applies an imperceptible watermark plus a signed C2PA manifest to an image or audio file. Another call checks any file for both — whether it was marked by you, and whether the manifest is still intact.

Pricing

Free: 500 marks/month. Paid plans from $19/mo. See plans →

Tooling to help you meet Article 50's marking requirements — not a compliance guarantee, not legal advice. See our terms and privacy policy.