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UN Transparency Protocol (UNTP)

The UN Transparency Protocol is a set of standards developed by UN/CEFACT for supply chain transparency. DPP Kit implements UNTP credential types and vocabularies.

What UNTP Defines​

Credential Types​

UNTP specifies five credential types, all implemented in DPP Kit:

UNTP TypeDPP KitDescription
Digital Facility RecordDFRFacility identity
Digital Product PassportDPPProduct information
Digital Traceability EventDTESupply chain events
Digital Conformity CredentialDCCConformity assessments
Digital Identity AnchorDIAEntity identity

Vocabularies​

UNTP defines the data fields, value lists, and structures for each credential type. This ensures credentials from different systems are interoperable — a DPP from DPP Kit can be understood by any UNTP-compatible system.

Conformance Testing​

UNTP provides test suites and schemas for validating credential conformance. DPP Kit includes a built-in Tier 2 validation engine that checks credentials against UNTP type-specific schemas using AJV (JSON Schema 2020-12). See Validation & Verification for details.

UNTP and DPP Kit​

DPP Kit serves as an implementation of the UNTP specification:

  • Credential structure follows UNTP data models
  • Identifier schemes use GS1 (GTIN, GLN) as specified by UNTP
  • Resolution uses GS1 Digital Link as the identifier resolution mechanism
  • Signing uses W3C Verifiable Credentials v2 as specified by UNTP

Conformance Tiers​

UNTP defines multiple conformance tiers:

TierDescriptionDPP Kit Status
Tier 1Basic credential structureImplemented
Tier 2Full schema and vocabulary conformanceImplemented
Tier 3Interoperability testingFuture

Further Reading​