How do IPTC Photo Metadata 2025.1 and the IPTC Digital Source Type vocabulary express AI-generated or composite provenance and a data-mining permission, and how does C2PA reference them?
IPTC's Digital Source Type vocabulary distinguishes media created with generative AI (trainedAlgorithmicMedia), edited with it (compositeWithTrainedAlgorithmicMedia) and composites with generative elements (compositeSynthetic); Photo Metadata carries one such URI in DigitalSourceType and a Data Mining permission URI whose own note says law may overrule it and silence is not permission. An agent needs both the XMP declaration and any C2PA-signed digitalSourceType, which can disagree (producer synthesis).
IPTC's Digital Source Type vocabulary distinguishes media created with generative AI (trainedAlgorithmicMedia), edited with it (compositeWithTrainedAlgorithmicMedia) and composites with generative elements (compositeSynthetic); Photo Metadata carries one such URI in DigitalSourceType and a Data Mining permission URI whose own note says law may overrule it and silence is not permission. An agent needs both the XMP declaration and any C2PA-signed digitalSourceType, which can disagree (producer synthesis).
Curator qualifications: Vocabulary/specification read 2026-10-22; no files inspected. C2PA 2.4 digitalSourceType requirement and 2025.1 AI-system properties from producer reading.
Limitations: Vocabulary/specification read 2026-10-22; no files inspected.
Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.
Structured fields
{
"citations": [
{
"url": "https://spec.c2pa.org/specifications/specifications/2.4/specs/C2PA_Specification.html",
"note": "cv.iptc.org digitalsourcetype scheme (bytes equal pin); IPTC Photo Metadata specification, 11.11 Data Mining"
},
{
"url": "https://cv.iptc.org/newscodes/digitalsourcetype",
"note": "cv.iptc.org digitalsourcetype scheme (bytes equal pin); IPTC Photo Metadata specification, 11.11 Data Mining"
},
{
"url": "https://iptc.org/std/photometadata/specification/IPTC-PhotoMetadata",
"note": "cv.iptc.org digitalsourcetype scheme (bytes equal pin); IPTC Photo Metadata specification, 11.11 Data Mining"
},
{
"url": "http://ns.useplus.org/ldf/vocab/DMI-PROHIBITED",
"note": "cv.iptc.org digitalsourcetype scheme (bytes equal pin); IPTC Photo Metadata specification, 11.11 Data Mining"
}
]
}Evidence claims
- [sourced_fact] IPTC's Digital Source Type vocabulary distinguishes media created with generative AI (trainedAlgorithmicMedia), edited with it (compositeWithTrainedAlgorithmicMedia) and composites with generative elements (compositeSynthetic); Photo Metadata carries one such URI in DigitalSourceType and a Data Mining permission URI whose own note says law may overrule it and silence is not permission. An agent needs both the XMP declaration and any C2PA-signed digitalSourceType, which can disagree (producer synthesis). · locator: cv.iptc.org digitalsourcetype scheme (bytes equal pin); IPTC Photo Metadata specification, 11.11 Data Mining source
Rights
| component | license | hosting | redistribution | modification | training | Evidence and notes |
|---|---|---|---|---|---|---|
| documentation | unknown | permitted | permitted | unknown | unknown | Applies to this original summary only, not to the cited sources. |