operation stringlengths 31 194 ⌀ | expected stringclasses 2
values | category stringlengths 4 16 ⌀ | source stringclasses 2
values | note stringlengths 30 71 ⌀ | _canary stringclasses 1
value |
|---|---|---|---|---|---|
The exact bytes are copied to another filesystem; the embedded manifest and its hard binding are untouched. | SURVIVES | byte-faithful | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
A thumbnail is extracted from a marked asset; the thumbnail carries no manifest of its own. | DESTROYED | derivative | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
An image is edited in a C2PA tool that supersedes the original claim with a new signed manifest referencing the original as an ingredient; a validator reports a valid, bound credential. | SURVIVES | supersede | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
The file is copied to another folder with the operating system's byte-faithful copy. | SURVIVES | faithful-copy | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
A transcode pipeline that is C2PA-aware migrates the manifest into the new container and re-signs it. | SURVIVES | resign-transcode | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
The image is printed and rescanned at high DPI. | DESTROYED | analogue | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
A C2PA-aware CDN re-encodes to WebP and re-signs a fresh manifest binding the new rendition, recording the original as an ingredient; a validator reports a valid Content Credential with lineage. | SURVIVES | lineage | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
A batch converter with no C2PA support re-encodes the JPEG and writes only pixels to the new container. | DESTROYED | reencode | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
The file is losslessly rotated by a tool that recomputes and re-signs the hard binding. | SURVIVES | resign-rotate | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
The asset is embedded unchanged into a BMFF container with its manifest box intact and bytes preserved. | SURVIVES | container | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
A C2PA-aware editor changes pixels and saves without re-signing, leaving the prior manifest attached to content it no longer describes. | DESTROYED | stale-binding | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
A C2PA-aware editor crops the image, appends an edit assertion, and re-signs, updating the hard binding to the new pixels. | SURVIVES | resign-crop | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
An asset is re-signed after a lossless format change by a tool that migrates the manifest and updates the hard binding to the new bytes. | SURVIVES | resign-format | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
A manifest references an external cloud manifest that has since been deleted, so it no longer resolves. | DESTROYED | external | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
A full-resolution screenshot of the asset is shared — a new file sampled from the framebuffer, with no manifest. | DESTROYED | capture | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
The image bytes are unchanged, but the XMP packet carrying the manifest was removed by a metadata optimizer. | DESTROYED | stripped | csoai-authored | authored to discriminate on C2PA manifest mechanics, not operation name | null |
Re-encode a C2PA-signed JPEG to PNG without a claim-preserving tool. | DESTROYED | reencode | csoai-authored-v3 | manifest not carried across format change | null |
Copy a C2PA-signed file byte-for-byte to a new path. | SURVIVES | copy | csoai-authored-v3 | bytes unchanged, manifest intact | null |
Strip all XMP/metadata with an EXIF cleaner. | DESTROYED | strip | csoai-authored-v3 | metadata removal drops the manifest | null |
Upload a C2PA-signed image to a platform that preserves manifests (per its C2PA support). | SURVIVES | upload | csoai-authored-v3 | platform declares C2PA-preserving | null |
Screenshot a C2PA-signed image on screen. | DESTROYED | screenshot | csoai-authored-v3 | re-capture creates a new asset, no manifest | null |
Losslessly rotate a JPEG 90° with a C2PA-aware tool that re-signs. | SURVIVES | rotate | csoai-authored-v3 | C2PA-aware re-sign carries provenance | null |
Crop a signed image with a generic editor that ignores C2PA. | DESTROYED | crop | csoai-authored-v3 | generic edit breaks the hash binding | null |
Embed a signed image unchanged into a PDF that carries the manifest. | SURVIVES | embed | csoai-authored-v3 | container preserves the manifest | null |
Convert a signed WAV to MP3 with lossy compression, no re-sign. | DESTROYED | transcode | csoai-authored-v3 | lossy transcode invalidates the claim hash | null |
Rename a signed file (no content change). | SURVIVES | rename | csoai-authored-v3 | filename is not part of the signed bytes | null |
Apply an Instagram filter and re-save via the app. | DESTROYED | filter | csoai-authored-v3 | pixel edit + re-save drops provenance | null |
Add a C2PA 'edited' action assertion via a compliant editor after cropping. | SURVIVES | edit-assert | csoai-authored-v3 | compliant editor records the edit in the manifest chain | null |
Print the image and re-scan it. | DESTROYED | print-scan | csoai-authored-v3 | analog round-trip loses all digital provenance | null |
Store the signed file in a zip and extract it unchanged. | SURVIVES | archive | csoai-authored-v3 | zip round-trip preserves bytes | null |
Run the image through an AI upscaler with no C2PA support. | DESTROYED | upscale | csoai-authored-v3 | AI transform, no manifest carry | null |
Attach the C2PA manifest as a sidecar .c2pa alongside a stripped asset. | SURVIVES | sidecar | csoai-authored-v3 | sidecar retains the verifiable manifest | null |
null | null | null | null | null | GSPC-CANARY-GUID provenance-csoai-2026 |
GSPC-PRV v3 — provenance survival by validity, not by presence
n = 16 public (+ 8 held out privately). v2 was measured DEAD — frontier models aced the C2PA-awareness matched pairs at 0.93–1.0. v3 targets the harder, correct principle.
What this measures
A marking SURVIVES only if a validator would report a VALID Content Credential bound to the asset; a manifest that is merely present but whose hard binding or signature no longer validates has NOT survived. Items pit present-but-invalid cases (a manifest copied verbatim into re-encoded pixels; pixels changed without a re-sign; a broken content hash; a tampered signature; an unresolvable external manifest) against valid-despite-transform cases (aware re-sign after crop/transcode/rotate; byte-faithful copy; valid lineage via ingredient). A model that pattern-matches "a manifest is attached, so it survived" fails the present-but-invalid half.
The grading instruction states this validity rule explicitly, so the labels are defensible (not a contested-label set). Whether v3 discriminates is an empirical question answered by the board — this is one cycle of author → measure → iterate, published honestly whichever way it lands.
Provenance
Authored by CSOAI (Apache-2.0, no third-party data), disjoint from published benchmarks by construction. Canary GUID in row 1; 8 held back privately. Contamination guard confirmed zero overlap with our training corpora before publication.
Grading
Deterministic SURVIVES/DESTROYED extraction. Unreadable → UNMEASURED, excluded, never scored wrong.
Honesty register
Measurement, not certification. n is below usable_n=30 until the bank grows; report the n with any figure. Nothing here is legal advice. CSOAI Ltd (GB, Companies House 16939677) · csoai.org
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