| DCC | Digital Conformity Credential. A credential attesting to a conformity assessment, certification, or test result. |
| DFR | Digital Facility Record. A credential identifying a physical facility or location. |
| DIA | Digital Identity Anchor. A permanent identity credential for an entity. |
| DID | Decentralized Identifier. A globally unique identifier that resolves to a public key, enabling cryptographic verification. DPP Kit uses did:web. |
| DID Document | A JSON document containing the public keys and service endpoints associated with a DID. Served at a well-known URL. |
| DPP | Digital Product Passport. A credential describing a product's identity, composition, origin, and compliance. |
| DTE | Digital Traceability Event. A credential recording a supply chain event (transformation, transaction, or association). |
| GLN-13 | Global Location Number. A 13-digit GS1 identifier for locations and facilities. |
| GS1 | Global Standards One. The organization that manages barcode and identifier standards (GTIN, GLN, etc.). |
| GS1 Digital Link | A standard for encoding GS1 identifiers as web URIs, enabling QR-code-based lookups. |
| GTIN-14 | Global Trade Item Number. A 14-digit GS1 identifier for trade items (products). |
| IDR | Identity Resolver. The GS1 Digital Link resolver service that maps identifiers to credential URLs. |
| Pilot Mode | Organization mode where re-issuing a credential overwrites the same resolver path. For testing and iteration. |
| Production Mode | Organization mode where each issuance creates a new identifier. For real-world deployment. |
| UNTP | United Nations Transparency Protocol. A set of standards for supply chain transparency built on Verifiable Credentials. |
| VC | Verifiable Credential. A W3C standard for tamper-evident, cryptographically verifiable digital claims. |
| VCKit | The credential engine (based on Veramo) that handles DID management, credential signing, and verification. |
| Verifiable Credential | See VC. |