| --- |
| license: apache-2.0 |
| pretty_name: "GSPC-PRV — Article 50 marking survival, validity principle (v3)" |
| tags: [ai-governance, benchmark, eu-ai-act, provenance, c2pa, measurement] |
| configs: |
| - config_name: default |
| data_files: |
| - split: train |
| path: items.jsonl |
| --- |
| |
| # 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 |
| |
