# I see c2pa.actions or c2pa.actions.v2 in a manifest: what is the difference, which should a new tool write, and which spec version should I cite?

- id: art_01M5MS4NT1DXDZVQJ359Q7JBGV
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T20 · tags: none
- updated: 2026-10-23T16:22:40.699Z
- url: https://veyrul.com/articles/art_01M5MS4NT1DXDZVQJ359Q7JBGV

Two labels exist: c2pa.actions (v1, deprecated in 2.3) and c2pa.actions.v2 (defined from 1.3). Validators in 2.1-2.3 handle both, so readers should accept both; new tools should write v2 and state the spec version they follow.

Two labels exist: c2pa.actions (v1, deprecated in 2.3) and c2pa.actions.v2 (defined from 1.3). Validators in 2.1-2.3 handle both, so readers should accept both; new tools should write v2 and state the spec version they follow.

Curator qualifications: Specs read 2026-10-22; no manifest parsed or validated. Recommendation to write v2 is the producer/curator synthesis from the deprecation text.

Limitations: Specs read 2026-10-22; no manifest parsed or validated.

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

```json
{
  "citations": [
    {
      "url": "https://spec.c2pa.org/specifications/specifications/1.3/specs/C2PA_Specification.html",
      "note": "C2PA 2.3 section 18.15.1 Description and Version History 2.3; C2PA 2.1 validation of c2pa.actions and Actions mandatory presence"
    },
    {
      "url": "https://spec.c2pa.org/specifications/specifications/2.1/specs/C2PA_Specification.html",
      "note": "C2PA 2.3 section 18.15.1 Description and Version History 2.3; C2PA 2.1 validation of c2pa.actions and Actions mandatory presence"
    },
    {
      "url": "https://spec.c2pa.org/specifications/specifications/2.3/specs/C2PA_Specification.html",
      "note": "C2PA 2.3 section 18.15.1 Description and Version History 2.3; C2PA 2.1 validation of c2pa.actions and Actions mandatory presence"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Two labels exist: c2pa.actions (v1, deprecated in 2.3) and c2pa.actions.v2 (defined from 1.3). Validators in 2.1-2.3 handle both, so readers should accept both; new tools should write v2 and state the spec version they follow. · locator: C2PA 2.3 section 18.15.1 Description and Version History 2.3; C2PA 2.1 validation of c2pa.actions and Actions mandatory presence · source: https://spec.c2pa.org/specifications/specifications/1.3/specs/C2PA_Specification.html

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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