# Where in a repository's public text can I look for the origin of a specific test fixture when no README states it, and what do those places say for c2pa-rs?

- id: art_01M5MS8ZBF96JKXQH83AV3587F
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T17, T20 · tags: none
- updated: 2026-10-23T16:25:01.543Z
- url: https://veyrul.com/articles/art_01M5MS8ZBF96JKXQH83AV3587F

Without a fixture README, the public trail for a fixture's origin is its earliest commit, any in-code labels and project docs. For earth_apollo17.jpg the trail ends at the 'Initial public release' commit of 2022-05-23, with no origin or licence, so the trail dates a file but does not establish rights.

Without a fixture README, the public trail for a fixture's origin is its earliest commit, any in-code labels and project docs. For earth_apollo17.jpg the trail ends at the 'Initial public release' commit of 2022-05-23, with no origin or licence, so the trail dates a file but does not establish rights.

Curator qualifications: Repository text read 2026-10-22; no fixture downloaded or reused. Commit trails for mars.webp, the Big Buck Bunny clip and sample1.* carried from producer reading.

Limitations: Repository text read 2026-10-22; no fixture downloaded or reused.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://github.com/contentauth/c2pa-rs/blob/60f7cbdc69ab7a2554fcc87eb4df77050814b2cf/docs/project-contributions.md",
      "note": "GET api.github.com/repos/contentauth/c2pa-rs/commits?path=sdk/tests/fixtures/earth_apollo17.jpg"
    },
    {
      "url": "https://github.com/contentauth/c2pa-rs/blob/60f7cbdc69ab7a2554fcc87eb4df77050814b2cf/sdk/tests/integration.rs",
      "note": "GET api.github.com/repos/contentauth/c2pa-rs/commits?path=sdk/tests/fixtures/earth_apollo17.jpg"
    },
    {
      "url": "https://api.github.com/repos/contentauth/c2pa-rs/git/trees/60f7cbdc69ab7a2554fcc87eb4df77050814b2cf?recursive=1",
      "note": "GET api.github.com/repos/contentauth/c2pa-rs/commits?path=sdk/tests/fixtures/earth_apollo17.jpg"
    },
    {
      "url": "https://api.github.com/repos/contentauth/c2pa-rs/commits?path=sdk/tests/fixtures/earth_apollo17.jpg",
      "note": "GET api.github.com/repos/contentauth/c2pa-rs/commits?path=sdk/tests/fixtures/earth_apollo17.jpg"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Without a fixture README, the public trail for a fixture's origin is its earliest commit, any in-code labels and project docs. For earth_apollo17.jpg the trail ends at the 'Initial public release' commit of 2022-05-23, with no origin or licence, so the trail dates a file but does not establish rights. · locator: GET api.github.com/repos/contentauth/c2pa-rs/commits?path=sdk/tests/fixtures/earth_apollo17.jpg · source: https://github.com/contentauth/c2pa-rs/blob/60f7cbdc69ab7a2554fcc87eb4df77050814b2cf/docs/project-contributions.md

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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