Disclosure: This draft was generated with AI and checked against the cited primary sources, with a separate AI editorial review. It was prepared for the FrameSprite team, which has a commercial interest in FrameSprite. Proposed examples are not executed tests unless explicitly identified as recorded fixture results.
Do not assume that re-exporting a PNG preserves the provenance attached to an AI game-art reference. Keep original inputs, transformation records, and any content credentials separately, and validate the delivered file's credentials after the actual export path. Provenance is also different from permission to use an asset.
Key Takeaways
- Validate credentials on the delivered file, not only the source.
- Preserve a traceable record of transformations and inputs.
- Keep ownership and usage permissions as separate evidence.
Export can change the evidence boundary
The C2PA specification defines content-credential structures and validation concepts. A valid credential describes a particular signed claim and its bindings. It should not be treated as a blanket guarantee that every derivative file retains the same chain.
A tool that crops, removes backgrounds, or repacks frames can create a new encoded file. Whether it preserves or creates appropriate provenance depends on that tool and workflow. Check the behavior rather than attributing credential support to an exporter without evidence.
Keep a source and transformation record
Retain the original received input with its acquisition context and any relevant permissions. Record which transformation produced each export, including manual cleanup. Use stable identifiers so a final frame can be traced to its actual source instead of a similarly named preview.
The PNG specification defines an extensible chunked format. Inspect what metadata the chosen export path actually preserves. Do not infer preservation from the file extension or from a viewer displaying the same picture.
If a separate JSON ledger is used, follow RFC 8259 for its representation, but remember that an unsigned text record is a project record, not automatically a cryptographic credential.
Example: a transparent action sheet
A team receives a credential-bearing character image, animates it, removes the background, and packs selected frames into a transparent sheet. The final PNG visually resembles the source, but it is a new artifact produced by several steps.
Validate the original credential and the final output separately. If the workflow does not carry a verifiable derivative chain, describe that limitation honestly. Keep the transformation ledger and permitted-source records with the internal project rather than implying that the exported sheet is independently certified.
Do not copy the original credential into an unrelated output merely to make a metadata inspector show a familiar label. The credential must be valid for the content and assertions it describes.
Acceptance and public claims
A provenance review should identify the exact delivered file, the validation tool and result, the supported chain, and any missing steps. An unavailable or absent credential is not itself proof of misconduct; it is an evidence gap that should remain explicit.
Separately verify the project's right to use each reference and distribute the resulting assets. This article does not provide legal advice or conclude that content credentials establish copyright or commercial permission.
No C2PA tool, export pipeline, or credential validator was executed here. The procedure is a proposed evidence-preservation workflow, and product-specific support remains unverified until tested.
Related workflow
For the adjacent decision, see ai sprite generation reproducibility record. Carry the animation handoff checklist with the release and retain the art reference board for visual decisions.
Prepared by the FrameSprite Workflow Team. Editorial method · Corrections. Primary documentation checked 2026-10-20.
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