{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "additionalProperties": true,
  "properties": {
    "type": {
      "type": "array",
      "readOnly": true,
      "default": [
        "DigitalIdentityAnchor",
        "RecognizedEntityCredential",
        "VerifiableCredential"
      ],
      "items": {
        "type": "string"
      },
      "allOf": [
        {
          "contains": {
            "const": "DigitalIdentityAnchor",
            "minContains": 1
          }
        },
        {
          "contains": {
            "const": "VerifiableCredential",
            "minContains": 1
          }
        },
        {
          "contains": {
            "const": "RecognizedEntityCredential",
            "minContains": 1
          }
        }
      ],
      "description": "MUST include `RecognizedEntityCredential` so that the DIA is processable as a W3C Recognized Entities v1.0 credential, and `DigitalIdentityAnchor` so that it is recognisable as the UNTP profile of one."
    },
    "@context": {
      "example": [
        "https://www.w3.org/ns/credentials/v2",
        "https://vocabulary.uncefact.org/untp/0.8.0/context/"
      ],
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "A list of JSON-LD context URIs that define the semantic meaning of properties within the credential. ",
      "readOnly": true,
      "prefixItems": [
        {
          "const": "https://www.w3.org/ns/credentials/v2",
          "type": "string"
        },
        {
          "const": "https://vocabulary.uncefact.org/untp/0.8.0/context/",
          "type": "string"
        }
      ],
      "default": [
        "https://www.w3.org/ns/credentials/v2",
        "https://vocabulary.uncefact.org/untp/0.8.0/context/"
      ],
      "minItems": 2,
      "uniqueItems": true
    },
    "id": {
      "example": "https://example-company.com/credentials/2a423366-a0d6-4855-ba65-2e0c926d09b0",
      "type": "string",
      "format": "uri",
      "description": "A unique identifier (URI) assigned to this verifiable credential."
    },
    "issuer": {
      "$ref": "#/$defs/CredentialIssuer",
      "description": "The organisation that is the issuer of this VC. The \"id\" property MUST be a W3C DID. Other identifiers, such as business or tax registration numbers, are listed in the \"issuerAlsoKnownAs\" property."
    },
    "validFrom": {
      "example": "2024-03-15T12:00:00Z",
      "type": "string",
      "format": "date-time",
      "description": "The date and time from which the credential is valid."
    },
    "validUntil": {
      "example": "2034-03-15T12:00:00Z",
      "type": "string",
      "format": "date-time",
      "description": "The expiry date (if applicable) of this verifiable credential."
    },
    "name": {
      "example": "Some name",
      "type": "string",
      "description": "Name of this verifiable credential instance (eg the title of a digital product passport, facility record, lifecycle event, or conformity credential)"
    },
    "credentialStatus": {
      "oneOf": [
        {
          "$ref": "#/$defs/BitstringStatusListEntry"
        },
        {
          "type": "array",
          "items": {
            "$ref": "#/$defs/BitstringStatusListEntry"
          },
          "minItems": 1
        }
      ],
      "description": "A W3C VCDM2.0 compliant object, or array of such objects, containing credential status information."
    },
    "renderMethod": {
      "type": "array",
      "items": {
        "$ref": "#/$defs/RenderTemplate2024"
      },
      "description": "Human rendering information for this credential. An array of render methods (eg RenderTemplate2024) that may be used to display the credential."
    },
    "credentialSubject": {
      "$ref": "#/$defs/RegisteredIdentity",
      "description": "The registered identity from the authoritative register that is the subject of this credential"
    },
    "issuingSoftware": {
      "$ref": "#/$defs/IssuingSoftware",
      "description": "Optional metadata identifying the software product (and its vendor) that issued this credential. Useful for vendor traceability and conformity testing. Issuers MAY omit this property."
    }
  },
  "description": "The Digital Identity Anchor (DIA) is a very simple credential that is issued by a trusted authority and asserts an equivalence between a member identity as known to the authority (eg a VAT number) and one or more decentralised identifiers (DIDs) held by the member.  ",
  "required": [
    "@context",
    "id",
    "issuer",
    "validFrom",
    "name",
    "credentialSubject"
  ],
  "$defs": {
    "CredentialIssuer": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "type": {
          "type": "array",
          "readOnly": true,
          "default": [
            "CredentialIssuer"
          ],
          "items": {
            "type": "string"
          },
          "allOf": [
            {
              "contains": {
                "const": "CredentialIssuer",
                "minContains": 1
              }
            }
          ]
        },
        "id": {
          "example": "did:web:identifiers.example-company.com:12345",
          "type": "string",
          "format": "uri",
          "description": "The W3C DID of the issuer. did:web and did:webvh are the RECOMMENDED methods."
        },
        "name": {
          "example": "Example Company Pty Ltd",
          "type": "string",
          "description": "The name of the issuer person or organisation"
        },
        "issuerAlsoKnownAs": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "type": {
                "type": "array",
                "readOnly": true,
                "default": [
                  "Party"
                ],
                "items": {
                  "type": "string"
                },
                "allOf": [
                  {
                    "contains": {
                      "const": "Party",
                      "minContains": 1
                    }
                  }
                ]
              },
              "id": {
                "example": "https://sample-business-register.gov/123456789",
                "type": "string",
                "format": "uri",
                "description": "Globally unique identifier of this party. Typically represented as a URI identifierScheme/Identifier URI"
              },
              "name": {
                "example": "Sample Company Ltd",
                "type": "string",
                "description": "Legal registered name of this party."
              },
              "registeredId": {
                "example": 90664869327,
                "type": "string",
                "description": "The registration number (alphanumeric) of the Party within the register. Unique within the register."
              },
              "idScheme": {
                "type": "object",
                "properties": {
                  "type": {
                    "type": "array",
                    "readOnly": true,
                    "default": [
                      "IdentifierScheme"
                    ],
                    "items": {
                      "type": "string"
                    },
                    "allOf": [
                      {
                        "contains": {
                          "const": "IdentifierScheme",
                          "minContains": 1
                        }
                      }
                    ]
                  },
                  "id": {
                    "type": "string",
                    "format": "uri",
                    "description": "The URI of this identifier scheme"
                  },
                  "name": {
                    "example": "Global Identifier Scheme Name",
                    "type": "string",
                    "description": "The name of the identifier scheme. "
                  }
                },
                "required": [
                  "id",
                  "name"
                ],
                "description": "The identifier scheme of the registeredId - eg the register that issued this identifier."
              }
            },
            "required": [
              "id",
              "name"
            ]
          },
          "description": "An optional list of other registered identifiers for this credential issuer "
        }
      },
      "description": "The issuer party (person or organisation) of a verifiable credential.",
      "required": [
        "id",
        "name"
      ]
    },
    "BitstringStatusListEntry": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "type": {
          "type": "string",
          "enum": [
            "BitstringStatusListEntry"
          ],
          "example": "BitstringStatusListEntry",
          "description": "The type of status list - must be set to \"The type property MUST be BitstringStatusListEntry.\""
        },
        "id": {
          "example": "https://example-cab.com/credentials/status/3#94567",
          "type": "string",
          "format": "uri",
          "description": "optional identifier of this status list entry."
        },
        "statusPurpose": {
          "type": "string",
          "examples": [
            "refresh",
            "revocation",
            "suspension",
            "message"
          ],
          "description": "Status purpose drawn from a standard list but extensible as per w3c bitstring status list specification."
        },
        "statusListIndex": {
          "example": "94567",
          "type": "string",
          "pattern": "^[0-9]+$",
          "description": "The statusListIndex property MUST be an arbitrary size integer greater than or equal to 0, expressed as a string in base 10. The value identifies the position of the status of the verifiable credential."
        },
        "statusListCredential": {
          "example": "https://example-cab.com/credentials/status/4",
          "type": "string",
          "format": "uri",
          "description": "The statusListCredential property MUST be a URL to a verifiable credential. When the URL is dereferenced, the resulting verifiable credential MUST have type property that includes the BitstringStatusListCredential value."
        },
        "statusSize": {
          "type": "integer",
          "minimum": 1
        },
        "statusMessage": {
          "type": "array",
          "minItems": 2,
          "items": {
            "type": "object",
            "required": [
              "status",
              "message"
            ],
            "properties": {
              "status": {
                "type": "string",
                "pattern": "^0x[0-9a-fA-F]+$"
              },
              "message": {
                "type": "string"
              }
            }
          }
        },
        "statusReference": {
          "oneOf": [
            {
              "type": "string",
              "format": "uri"
            },
            {
              "type": "array",
              "items": {
                "type": "string",
                "format": "uri"
              }
            }
          ]
        }
      },
      "description": "A privacy-preserving, space-efficient, and high-performance mechanism for publishing status information such as suspension or revocation of Verifiable Credentials through use of bitstrings.  See https://www.w3.org/TR/vc-bitstring-status-list/ for full details.",
      "required": [
        "type",
        "statusPurpose",
        "statusListIndex",
        "statusListCredential"
      ],
      "allOf": [
        {
          "if": {
            "type": "object",
            "required": [
              "statusSize"
            ],
            "properties": {
              "statusSize": {
                "type": "integer",
                "minimum": 2
              }
            }
          },
          "then": {
            "type": "object",
            "required": [
              "statusMessage"
            ],
            "properties": {
              "statusMessage": {
                "type": "array"
              }
            }
          }
        },
        {
          "if": {
            "type": "object",
            "properties": {
              "statusSize": {
                "type": "integer",
                "const": 1
              }
            }
          },
          "then": {
            "type": "object",
            "properties": {
              "statusMessage": {
                "type": "array",
                "maxItems": 2
              }
            }
          }
        }
      ]
    },
    "RenderTemplate2024": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "type": {
          "type": "array",
          "readOnly": true,
          "default": [
            "RenderTemplate2024"
          ],
          "items": {
            "type": "string"
          },
          "allOf": [
            {
              "contains": {
                "const": "RenderTemplate2024",
                "minContains": 1
              }
            }
          ]
        },
        "name": {
          "type": "string",
          "description": "Human facing display name for selection"
        },
        "mediaQuery": {
          "type": "string",
          "description": "Media query as defined in https://www.w3.org/TR/mediaqueries-4/"
        },
        "template": {
          "type": "string",
          "description": "An inline template field for use cases where remote retrieval of a render method is suboptimal"
        },
        "url": {
          "type": "string",
          "format": "uri",
          "description": "URL for remotely hosted template"
        },
        "mediaType": {
          "type": "string",
          "description": "media type of the rendered output (eg text/html)"
        },
        "digestMultibase": {
          "type": "string",
          "description": "Used for resource integrity and/or validation of the inline `template`"
        }
      },
      "description": "A single template format focused render method where the content/media type decision becomes secondary (and is expressed separately).See https://github.com/w3c-ccg/vc-render-method/issues/9"
    },
    "IssuingSoftware": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "id": {
          "example": "https://example.com/.well-known/untp/software/yourproduct/2026.04.1",
          "type": "string",
          "format": "uri",
          "description": "A resolvable identifier for the specific version of the software product that issued this credential."
        },
        "name": {
          "example": "Your Product Name",
          "type": "string",
          "description": "The name of the software product that issued this credential."
        },
        "version": {
          "example": "2026.04.1",
          "type": "string",
          "description": "The version of the software product that issued this credential."
        },
        "vendor": {
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "id": {
              "example": "did:web:example.com",
              "type": "string",
              "format": "uri",
              "description": "The decentralised identifier (DID) or other resolvable identifier of the software vendor."
            },
            "name": {
              "example": "Your Vendor Name",
              "type": "string",
              "description": "The name of the software vendor."
            }
          },
          "required": [
            "id",
            "name"
          ],
          "description": "The vendor of the software product that issued this credential."
        }
      },
      "required": [
        "id",
        "name",
        "version",
        "vendor"
      ],
      "description": "Optional metadata identifying the software product (and its vendor) that issued the parent credential. When present, all listed sub-properties MUST be populated; when absent, the credential is still valid (verifiers MUST treat the property as optional)."
    },
    "RegisteredIdentity": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "type": {
          "type": "array",
          "readOnly": true,
          "default": [
            "RecognizedEntity",
            "RegisteredIdentity"
          ],
          "items": {
            "type": "string"
          },
          "allOf": [
            {
              "contains": {
                "const": "RecognizedEntity",
                "minContains": 1
              }
            },
            {
              "contains": {
                "const": "RegisteredIdentity",
                "minContains": 1
              }
            }
          ],
          "description": "MUST include both `RecognizedEntity` (W3C Recognized Entities v1.0) and `RegisteredIdentity` (UNTP), so that a DIA is processable by a conforming W3C recognized-entity processor."
        },
        "id": {
          "example": "did:web:samplecompany.com/123456789",
          "type": "string",
          "format": "uri",
          "description": "The DID controlled by the registered member, linked to the `registeredId` through this Identity Anchor. This is the `RecognizedEntity` identifier in W3C Recognized Entities v1.0 and MUST be a DID."
        },
        "registeredName": {
          "example": "Sample business Ltd",
          "type": "string",
          "description": "The registered name of the entity within the identifier scheme.  Examples: product - EV battery 300Ah, Party - Sample Company Pty Ltd,  Facility - Green Acres battery factory "
        },
        "registeredId": {
          "example": 123456789,
          "type": "string",
          "description": "The registration number (alphanumeric) of the entity within the register. Unique within the register."
        },
        "registeredDate": {
          "type": "string",
          "format": "date",
          "description": "The date on which this identity was first registered with the registrar."
        },
        "publicInformation": {
          "type": "string",
          "format": "uri",
          "description": "A link to further information about the registered entity on the authoritative registrar site."
        },
        "idScheme": {
          "$ref": "#/$defs/IdentifierScheme",
          "description": "The identifier scheme operated by the registrar"
        },
        "registrar": {
          "type": "object",
          "properties": {
            "type": {
              "type": "array",
              "readOnly": true,
              "default": [
                "Party"
              ],
              "items": {
                "type": "string"
              },
              "allOf": [
                {
                  "contains": {
                    "const": "Party",
                    "minContains": 1
                  }
                }
              ]
            },
            "id": {
              "example": "https://sample-business-register.gov/123456789",
              "type": "string",
              "format": "uri",
              "description": "Globally unique identifier of this party. Typically represented as a URI identifierScheme/Identifier URI"
            },
            "name": {
              "example": "Sample Company Ltd",
              "type": "string",
              "description": "Legal registered name of this party."
            }
          },
          "required": [
            "id",
            "name"
          ],
          "description": "The registrar party that operates the register."
        },
        "registerType": {
          "type": "string",
          "enum": [
            "product",
            "facility",
            "business",
            "trademark",
            "land",
            "accreditation"
          ],
          "example": "product",
          "description": "The thematic purpose of the register - organisations, facilities, products, trademarks, etc"
        },
        "recognitionScope": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/RecognitionScope"
          },
          "description": "What the registrar recognises this entity as, and under what mandate - its legal form, class or licence category, the standards or schemes the recognition rests on, the actions it covers, and any territorial limit. Each entry references a definition the registrar itself publishes. Replaces the v0.8.0 `registrationScope`, which conflated these."
        }
      },
      "description": "The identity anchor binds a registered identity to one or more decentralised identifiers controlled by the registered member. It is a profile of the W3C Recognized Entities v1.0 `RecognizedEntity`, adding the register-managed identifier and scheme that W3C does not yet define.",
      "required": [
        "id",
        "registeredName",
        "registeredId",
        "registeredDate",
        "idScheme",
        "registerType"
      ]
    },
    "IdentifierScheme": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "type": {
          "type": "array",
          "readOnly": true,
          "default": [
            "IdentifierScheme"
          ],
          "items": {
            "type": "string"
          },
          "allOf": [
            {
              "contains": {
                "const": "IdentifierScheme",
                "minContains": 1
              }
            }
          ]
        },
        "id": {
          "type": "string",
          "format": "uri",
          "description": "The URI of this identifier scheme"
        },
        "name": {
          "example": "Global Identifier Scheme Name",
          "type": "string",
          "description": "The name of the identifier scheme. "
        }
      },
      "description": "An identifier registration scheme for products, facilities, or organisations. Typically operated by a state, national or global authority.",
      "required": [
        "id",
        "name"
      ]
    },
    "RecognitionScope": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "type": {
          "type": "array",
          "readOnly": true,
          "default": [
            "RecognitionScope"
          ],
          "items": {
            "type": "string"
          },
          "allOf": [
            {
              "contains": {
                "const": "RecognitionScope",
                "minContains": 1
              }
            }
          ]
        },
        "scopeCode": {
          "type": "string",
          "enum": [
            "legal-form",
            "entity-class",
            "assessed-against",
            "action",
            "territory"
          ],
          "example": "legal-form",
          "description": "OPTIONAL discoverability hint identifying which aspect of the recognition this entry expresses, from the UN/CEFACT [recognition-scope code list](https://test.uncefact.org/vocabulary/recognition-scope/). Omit when no value fits; there is no 'other' value. The `id` remains the authoritative meaning."
        },
        "id": {
          "type": "string",
          "format": "uri",
          "example": "https://abr.business.gov.au/Help/EntityTypeDescription?Id=19",
          "description": "The registrar's own definition of this class, mandate, action or territory, as a resolvable URI. Authority stays with the register; UNTP maintains no list of the world's legal forms."
        },
        "name": {
          "type": "string",
          "example": "Australian Private Company",
          "description": "The value as the register names it, in the register's own language."
        },
        "scheme": {
          "$ref": "#/$defs/IdentifierScheme",
          "description": "OPTIONAL reference to the controlled list this value is drawn from. Useful because one registrar commonly publishes several lists and the value URI alone does not say which."
        }
      },
      "required": [
        "id",
        "name"
      ],
      "description": "One aspect of what a registrar recognises about an entity."
    }
  }
}