---
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