# NAPH Validation Report

Generated 2026-05-01 14:27 UTC · National Aerial Photography Heritage Ontology · v0.1

## Summary

- Ontology: `ontology/naph-core.ttl`
- Shapes: `ontology/naph-shapes.ttl`
- Sample data: `data/sample-photographs.ttl` (10 records)
- SHACL conformance: CONFORMS ✓ (violations: 0)

## SHACL Validation

Each photograph validated against tier-specific shapes (Baseline / Enhanced / Aspirational), DigitalSurrogate quality requirements, and Place authority shape.

All records conform to declared tier compliance.

## Competency Question Verification

Each question is a research workflow that the standard enables. Results below are run live against the sample dataset.

### CQ1: WWII temporal range — photos captured 1939-09 to 1945-09

5 results

photo | label | date
--- | --- | ---
<https://w3id.org/naph/example/photo-008> | "Peenemünde rocket research facility frame 0413" | "1943-06-23"^^<http://www.w3.org/2001/XMLSchema#date>
<https://w3id.org/naph/example/photo-004> | "Hamburg post-firestorm frame 1287" | "1943-07-30"^^<http://www.w3.org/2001/XMLSchema#date>
<https://w3id.org/naph/example/photo-001> | "Berlin reconnaissance frame 4023" | "1944-03-28"^^<http://www.w3.org/2001/XMLSchema#date>
<https://w3id.org/naph/example/photo-003> | "Saipan coastline frame 0218" | "1944-08-12"^^<http://www.w3.org/2001/XMLSchema#date>
<https://w3id.org/naph/example/photo-010> | "Hiroshima post-detonation assessment frame 0034" | "1945-08-11"^^<http://www.w3.org/2001/XMLSchema#date>

### CQ3: Open rights — photos available for open-access publication

7 results

photo | label | rightsLabel
--- | --- | ---
<https://w3id.org/naph/example/photo-010> | "Hiroshima post-detonation assessment frame 0034" | "No Copyright — United States"
<https://w3id.org/naph/example/photo-009> | "Edinburgh Castle and Royal Mile frame 2287" | "No Copyright — Other Known Legal Restrictions"
<https://w3id.org/naph/example/photo-008> | "Peenemünde rocket research facility frame 0413" | "No Copyright — Other Known Legal Restrictions"
<https://w3id.org/naph/example/photo-006> | "Pyongyang industrial district frame 0892" | "No Copyright — United States"
<https://w3id.org/naph/example/photo-004> | "Hamburg post-firestorm frame 1287" | "No Copyright — Other Known Legal Restrictions"
<https://w3id.org/naph/example/photo-003> | "Saipan coastline frame 0218" | "No Copyright — United States"
<https://w3id.org/naph/example/photo-001> | "Berlin reconnaissance frame 4023" | "No Copyright — Other Known Legal Restrictions"

### CQ4: Wikidata event linkage — photos linked to historic events

2 results

photo | label | wikidata
--- | --- | ---
<https://w3id.org/naph/example/photo-010> | "Hiroshima post-detonation assessment frame 0034" | <https://www.wikidata.org/wiki/Q703203>
<https://w3id.org/naph/example/photo-008> | "Peenemünde rocket research facility frame 0413" | <https://www.wikidata.org/wiki/Q174640>

### CQ5: NARA partnership audit — provenance via US National Archives

2 results

photo | label | chainLabel
--- | --- | ---
<https://w3id.org/naph/example/photo-010> | "Hiroshima post-detonation assessment frame 0034" | "USAAF 1945 → US Strategic Bombing Survey → NARA → NCAP digitisation partnership 2016"
<https://w3id.org/naph/example/photo-006> | "Pyongyang industrial district frame 0892" | "USAF 1951 → NARA accession → NCAP digitisation partnership 2016"

### CQ6: Tier compliance distribution

3 results

tierLabel | count
--- | ---
"Enhanced" | "4"^^<http://www.w3.org/2001/XMLSchema#integer>
"Baseline" | "3"^^<http://www.w3.org/2001/XMLSchema#integer>
"Aspirational" | "3"^^<http://www.w3.org/2001/XMLSchema#integer>

### CQ8: Capture-context filter — Spitfire above 6000m

2 results

photo | label | altitude
--- | --- | ---
<https://w3id.org/naph/example/photo-009> | "Edinburgh Castle and Royal Mile frame 2287" | "6096"^^<http://www.w3.org/2001/XMLSchema#decimal>
<https://w3id.org/naph/example/photo-004> | "Hamburg post-firestorm frame 1287" | "9144"^^<http://www.w3.org/2001/XMLSchema#decimal>

### CQ7: High-research-value subset — post-1944 + Place + open rights

2 results

photo | label
--- | ---
<https://w3id.org/naph/example/photo-010> | "Hiroshima post-detonation assessment frame 0034"
<https://w3id.org/naph/example/photo-009> | "Edinburgh Castle and Royal Mile frame 2287"