Tellmark

Image marking with a signed C2PA manifest and an invisible watermark.

FreemiumC2PA ecosystemc2pawatermarkingimagessdklabels

Overview

Adds a signed C2PA manifest and an invisible watermark to AI-generated JPEG, PNG and WebP images via a closed Python or Node SDK, plus visible labels and a free in-browser checker. Free tier of 100 marks a month; paid plans from $29 a month. Its signer is not yet on the C2PA trust list, and the watermark has only been tested against re-saving and resizing.

Article 50 obligations it addresses

Art. 50(2)Machine-readable marking of synthetic content — all tools for this duty

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