Accessibility metadata evidence receipt

Title: plain-text-story.epub
Tool version: epubops/a11y/v1
Spec reference: https://www.w3.org/TR/epub-a11y-11/
Input SHA-256: 0b2d9c696dabf23eca965c029987ded9d984c3c2ab604b50dd8c554a6872a02f (1495 bytes)

EPUB version: 3.0
Output SHA-256 (OPF metadata only changed): 384001d29f23c5ab63eee03da0050c8dc5b298a878cfec964bf7d675484b68eb
All other content documents byte-identical to input: true

Observations

Nav document present	true (OEBPS/nav.xhtml)
Table of contents signal	true
Page-list present	false
Package language	en
Content documents	2 total, 0 with no lang attribute
Images	0 total, 0 with an alt attribute, 0 without one
Tables	false
MathML	false
Hazard signals	none detected

Metadata inserted (4)

schema:accessMode = textual -- no <img> elements were found in any content document; EPUB A11y 1.1 sec.3.2 lists accessMode as schema.org-defined discoverability metadata, and a title with zero images has an unambiguous textual access mode
schema:accessModeSufficient = textual -- accessMode is textual-only (no images present), so textual is trivially a sufficient access mode
schema:accessibilityFeature = tableOfContents -- manifest declares a nav document (properties="nav") whose content contains an epub:type="toc" nav element
schema:accessibilityFeature = structuralNavigation -- the EPUB3 nav document is itself the structural navigation mechanism the spec defines; its presence is the fact, not a judgement of navigation quality

Unresolved for the publisher (3)

schema:accessibilityHazard -- no animated-GIF signal was found in the images scanned; this does not prove no hazard exists (CSS/SVG animation and video are not scanned), so "none" is never inserted automatically
schema:accessibilitySummary -- a human-readable accessibility summary is prose; this kernel never generates prose describing the book's accessibility
dcterms:conformsTo -- a conformance claim (e.g. EPUB Accessibility 1.1 - WCAG 2.0 Level AA) asserts the whole title was checked; this kernel reports facts about individual files, never a conformance verdict, and an optional Ace pass (when run) is included in the receipt as evidence, not as this claim

DAISY Ace

Not run for this title.

What was NOT checked

visual color contrast
reading-order sense (DOM order vs. visual order)
alt-text quality, accuracy, or correct use of empty alt for decorative images
video/audio captions, transcripts, or audio descriptions
CSS or SVG-driven animation as a flashing hazard (only animated GIF is scanned)
EPUBCheck conformance (not run by this kernel; a separate, optional, pinned tool)
WCAG success-criteria conformance as a whole (individual, cited facts only)