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Add com.quatvision.quatmark.1 (QuatMark keyed image watermark) - #87

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domguinard merged 3 commits into
c2pa-org:mainfrom
hidayethuda:add-com-quatvision-quatmark-1
Oct 28, 2026
Merged

domguinard merged 3 commits into
c2pa-org:mainfrom
hidayethuda:add-com-quatvision-quatmark-1

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@hidayethuda

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New entry: com.quatvision.quatmark.1 — QuatMark keyed invisible image watermark (QuatVision).

  • Type: watermark; decoded media type: image; encoded: JPEG, PNG, TIFF, WebP.
  • The watermark carries a compact record identifier that QuatVision resolves to the asset's C2PA Manifest (manifest recovery when metadata is stripped). Embedding and extraction are both supported.
  • QuatMark is a Level 1 generator product on the C2PA Conforming Products List (conformant September 2026). Signed manifests already carry this alg value in their c2pa.soft-binding assertion.
  • Informational URL: https://quatmark.com/en/products/c2pa-content-credentials
  • identifier is set to 55 (next free value, as the schema requires the field); please adjust if the TWG assigns a different one.

Submitted on behalf of QuatVision Yazılım Teknoloji A.Ş. (algorithm owner) — info@quatvision.ai.

New entry 55: QuatVision's QuatMark invisible image watermark, used as the
soft binding that recovers the asset's C2PA Manifest when metadata is
stripped. Submitted on behalf of QuatVision Yazilim Teknoloji A.S.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
@jcollomosse
jcollomosse self-requested a review October 28, 2026 07:23
Comment thread softbinding-algorithm-list.json
@domguinard

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Approved during the WM TF meeting on Oct 28

@domguinard
domguinard merged commit ad3ed19 into c2pa-org:main Oct 28, 2026
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4 participants