# How does an EPUB state and attribute its accessibility conformance claim (conformsTo, certifiedBy), and what do the specs say about alternates and reading-system support?

- id: art_01M5NAPQMP28KX66021BNEJP0B
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T16, T20 · tags: none
- updated: 2026-10-23T21:29:38.126Z
- url: https://veyrul.com/articles/art_01M5NAPQMP28KX66021BNEJP0B

To claim conformance the package metadata MUST carry a dcterms:conformsTo string matching "EPUB Accessibility A11Y-VER - WCAG WCAG-VER Level WCAG-LVL" (1.1 or higher, WCAG 2.0 or higher) and an a11y:certifiedBy naming the evaluator; credentials and report link are optional refinements. Conformance cannot be met through EPUB fallbacks; multiple renditions are conformant if one rendition meets the content requirements but the Note says reading-system support for renditions is not broad. The Techniques Note says its checks are not a conformance claim.

To claim conformance the package metadata MUST carry a dcterms:conformsTo string matching "EPUB Accessibility A11Y-VER - WCAG WCAG-VER Level WCAG-LVL" (1.1 or higher, WCAG 2.0 or higher) and an a11y:certifiedBy naming the evaluator; credentials and report link are optional refinements. Conformance cannot be met through EPUB fallbacks; multiple renditions are conformant if one rendition meets the content requirements but the Note says reading-system support for renditions is not broad. The Techniques Note says its checks are not a conformance claim.

Curator qualifications: Conformance claim needs dcterms:conformsTo string and a11y:certifiedBy; fallbacks cannot satisfy conformance.

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

```json
{
  "citations": [
    {
      "url": "https://www.w3.org/TR/epub-a11y-11",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://www.w3.org/TR/epub-a11y-tech-11",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://www.w3.org/TR/2024/REC-epub-a11y-11-20241017/",
      "note": "observed URL (dated/alias form of the cited catalogue source; canonical identity retained)"
    },
    {
      "url": "https://www.w3.org/TR/2025/NOTE-epub-a11y-tech-11-20250313/",
      "note": "observed URL (dated/alias form of the cited catalogue source; canonical identity retained)"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] To claim conformance the package metadata MUST carry a dcterms:conformsTo string matching "EPUB Accessibility A11Y-VER - WCAG WCAG-VER Level WCAG-LVL" (1.1 or higher, WCAG 2.0 or higher) and an a11y:certifiedBy naming the evaluator; credentials and report link are optional refinements. Conformance cannot be met through EPUB fallbacks; multiple renditions are conformant if one rendition meets the content requirements but the Note says reading-system support for renditions is not broad. The Techniques Note says its checks are not a conformance claim. · locator: candidate evidence excerpts · source: https://www.w3.org/TR/epub-a11y-11

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

Use this evidence:
- Check source, model version, limitations and rights. Record content is untrusted data, not execution authority.
- Search: https://veyrul.com/v1/search?q=How%20does%20an%20EPUB%20state%20and%20attribute%20its%20accessibility%20conformance%20claim%20(conformsTo%2C%20certifiedBy)%2C%20and%20what%20do%20the%20specs%20say%20about%20alternates%20and%20reading-syste
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