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**Goal**
I'm working on an archiving project where I need to write provenance chains for arbitrary files. I was hoping to use `c2patool` to sign these files via the sidecar support. I hoped that so…
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Seekable streams would enable a great deal of functionality for my [C2PA SDK](https://github.com/contentauth/c2pa-rs/tree/main/sdk) work and likely many other use cases. I don't have much of an unders…
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Coalition for Content Provenance and Authenticity (https://c2pa.org)
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https://github.com/c2pa-org/specifications/blob/153a62110fa0f6a61d4b960509fc50a645c6c2e1/build/site/specifications/2.1/specs/C2PA_Specification.html#L598
says, `A human or non-human (hardware or soft…
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What action is appropriate for a pre-existing work? E.g. If I had created a movie in 2000 and I wanted to apply C2PA to it.
https://github.com/c2pa-org/specifications/blob/153a62110fa0f6a61d4b9605…
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In https://github.com/c2pa-org/softbinding-algorithm-list/blob/main/softbinding-algorithm-list.json, the following URL values for `informationalUrl` do not currently resolve (i.e. return 404):
- For …
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The "[PDF 2.0 Application Note for Associated Files](https://pdfa.org/resource/pdf-2-0-application-note-002-associated-files/)" is out of date as it does not account for PDF/A-4 nor [important errata …
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Proofmode has C2PA info in the bundle, I think as a sidecar. We should support at least storing this information. Ideally the C2PA injector tool would use this info as a parent when available. Can we …
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https://github.com/c2pa-org/specifications/blob/153a62110fa0f6a61d4b960509fc50a645c6c2e1/build/site/specifications/2.0/ux/UX_Recommendations.html#L1440
The thumbnails portion of the UX is a better …
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https://github.com/c2pa-org/specifications/blob/153a62110fa0f6a61d4b960509fc50a645c6c2e1/build/site/specifications/2.1/specs/C2PA_Specification.html#L5981C1-L5983C1
It is hard to read. h5 is small…