Watermarking and fingerprinting algorithms
Durable Content Credentials is a concept that helps content provenance to persist across content platforms by using C2PA manifest data in conjunction with:
- Invisible watermarks, actively inserted into the content.
- Content fingerprints, passively computed from the content.
Platforms that host media assets might remove C2PA manifest data, if, for example, they use software that does not yet support the standard. If a copy of the manifest data is stored in an online database, you can use a watermark or a fingerprint to find it again. Combining both watermarks and fingerprints further improves the robustness of the provenance information.
The C2PA specification refers to watermarking and content fingerprinting as soft bindings, which can be used to find digital content, even if the underlying bits differ. The C2PA specification requires that soft bindings be generated using one of the algorithms approved by the C2PA Technical Working Group.
The table below is provided for convenience only and is created and automatically updated based on data from the C2PA C2PA Soft Binding Algorithm List, which is the single authoritative source of the information.
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