It's advised to use the latest maintained release from the list of maintained releases.
Core Vocabulary
Please note that this content is under development and is not ready for implementation. This status message will be updated as content development progresses.
Artifacts
Published Vocabulary and Context
The UNTP Core Vocabulary and versioned JSON-LD context files are published as linked data at https://vocabulary.uncefact.org/untp/.
| Artefact | URL |
|---|---|
| Core Vocabulary | https://vocabulary.uncefact.org/untp/ |
| V0.7.0 JSON-LD Context | https://vocabulary.uncefact.org/untp/0.7.0/context/ |
The vocabulary defines persistent linked data URIs for all UNTP classes and properties and is not versioned — terms are stable once published. The JSON-LD context files, which map credential properties to vocabulary URIs, are versioned with each specification release.
Vocabulary Overview
The UNTP core vocabulary defines the classes and properties that underpin all five UNTP credential types: Digital Product Passport (DPP), Digital Facility Record (DFR), Digital Conformity Credential (DCC), Digital Traceability Event (DTE), and Digital Identity Anchor (DIA). Each credential type is a specialisation of VerifiableCredential that wraps a specific domain subject — for example, a DPP wraps a Product, while a DCC wraps a ConformityAttestation.
The vocabulary is designed to extend, not duplicate, established external vocabularies. The credential envelope inherits from the W3C Verifiable Credentials Data Model v2.0, and the Address class extends schema:PostalAddress. UNTP only defines properties that are specific to supply chain transparency — all inherited properties from W3C VCDM and Schema.org are referenced, not redefined.
The diagram below shows the high-level structure of the vocabulary. Five credential types each compose a domain subject class. A central design principle is verifiable performance claims — both products (via DPP) and facilities (via DFR) carry Claim objects that reference specific Criterion definitions. Independent conformity assessments (via DCC) evaluate the same criteria, providing third-party verification of the supplier's own claims. This shared reference to common criteria is what makes UNTP claims verifiable: a buyer can match a product's self-declared claims against independent assessment results for the same criteria. Traceability events (via DTE) record product lifecycle activities — manufacturing, movement, and modification — linking products to the facilities where these activities occur. Party is a shared class referenced across all subjects to identify the organisations involved.
The reference tables below are auto-generated from the machine-readable ontology at untp-ontology.jsonld. Re-generate by running:
node .claude/scripts/generate-ontology-docs.js
Credential Types
VerifiableCredential
A verifiable credential is a digital and verifiable version of everyday credentials such as certificates and licenses. It conforms to the W3C Verifiable Credentials Data Model v2.0 (VCDM).
Extends: VerifiableCredential — inherited properties from the external vocabulary are not repeated here.
DigitalProductPassport
A digital Product Passport (DPP) credential.
Credential Subject: Product
Sub-class of: VerifiableCredential
DigitalFacilityRecord
A digital Facility Record (DFR) credential.
Credential Subject: Facility
Sub-class of: VerifiableCredential
DigitalConformityCredential
A Digital Conformity Credential (DCC) credential.
Credential Subject: ConformityAttestation
Sub-class of: VerifiableCredential