{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "additionalProperties": true,
  "properties": {
    "type": {
      "type": "array",
      "readOnly": true,
      "default": [
        "DigitalIdentityAnchor",
        "VerifiableCredential"
      ],
      "items": {
        "type": "string"
      },
      "allOf": [
        {
          "contains": {
            "const": "DigitalIdentityAnchor",
            "minContains": 1
          }
        },
        {
          "contains": {
            "const": "VerifiableCredential",
            "minContains": 1
          }
        }
      ]
    },
    "@context": {
      "example": [
        "https://www.w3.org/ns/credentials/v2",
        "https://vocabulary.uncefact.org/untp/0.7.0/context/"
      ],
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "A list of JSON-LD context URIs that define the semantic meaning of properties within the credential. ",
      "readOnly": true,
      "prefixItems": [
        {
          "const": "https://www.w3.org/ns/credentials/v2",
          "type": "string"
        },
        {
          "const": "https://vocabulary.uncefact.org/untp/0.7.0/context/",
          "type": "string"
        }
      ],
      "default": [
        "https://www.w3.org/ns/credentials/v2",
        "https://vocabulary.uncefact.org/untp/0.7.0/context/"
      ],
      "minItems": 2,
      "uniqueItems": true
    },
    "id": {
      "example": "https://example-company.com/credentials/2a423366-a0d6-4855-ba65-2e0c926d09b0",
      "type": "string",
      "format": "uri",
      "description": "A unique identifier (URI) assigned to this verifiable credential."
    },
    "issuer": {
      "$ref": "#/$defs/CredentialIssuer",
      "description": "The organisation that is the issuer of this VC. Note that the \"id\" property MUST be a W3C DID.  Other identifiers such as tax registration numbers can be listed in the \"otherIdentifiers\" property."
    },
    "validFrom": {
      "example": "2024-03-15T12:00:00Z",
      "type": "string",
      "format": "date-time",
      "description": "The date and time from which the credential is valid."
    },
    "validUntil": {
      "example": "2034-03-15T12:00:00Z",
      "type": "string",
      "format": "date-time",
      "description": "The expiry date (if applicable) of this verifiable credential."
    },
    "name": {
      "example": "Some name",
      "type": "string",
      "description": "Name of this verifiable credential instance (eg the title of a digital product passport, facility record, lifecycle event, or conformity credential)"
    },
    "credentialStatus": {
      "$ref": "#/$defs/BitstringStatusListEntry",
      "description": "A W3C VCDM2.0 compliant object containing credential status information."
    },
    "renderMethod": {
      "type": "array",
      "items": {
        "$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": "#/$defs/RegisteredIdentity",
      "description": "The registered identity from the authoritative register that is the subject of this credential"
    }
  },
  "description": "The Digital Identity Anchor (DIA) is a very simple credential that is issued by a trusted authority and asserts an equivalence between a member identity as known to the authority (eg a VAT number) and one or more decentralised identifiers (DIDs) held by the member.  ",
  "required": [
    "@context",
    "id",
    "issuer",
    "validFrom",
    "name",
    "credentialSubject"
  ],
  "$defs": {
    "CredentialIssuer": {
      "type": "object",
      "additionalProperties": false,
      "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 - should be a did:web or did:webvh"
        },
        "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."
              }
            },
            "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 identifer of this status list entry."
        },
        "statusPurpose": {
          "type": "string",
          "enum": [
            "refresh",
            "revocation",
            "suspension",
            "message"
          ],
          "example": "refresh",
          "description": "Status purpose drawn from a standard list but extensible as per w3c bitstring status list specification."
        },
        "statusListIndex": {
          "minimum": 0,
          "example": 94567,
          "type": "integer",
          "description": "\tThe 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."
        }
      },
      "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"
      ]
    },
    "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"
    },
    "RegisteredIdentity": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "type": {
          "type": "array",
          "readOnly": true,
          "default": [
            "RegisteredIdentity"
          ],
          "items": {
            "type": "string"
          },
          "allOf": [
            {
              "contains": {
                "const": "RegisteredIdentity",
                "minContains": 1
              }
            }
          ]
        },
        "id": {
          "example": "did:web:samplecompany.com/123456789",
          "type": "string",
          "format": "uri",
          "description": "The DID that is controlled by the registered member and is linked to the registeredID through this Identity Anchor credential"
        },
        "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"
        },
        "registrationScope": {
          "type": "array",
          "items": {
            "type": "string",
            "format": "uri"
          },
          "description": "List of URIs that represent the roles or scopes of membership. For example [\"https://abr.business.gov.au/Help/EntityTypeDescription?Id=19\"]"
        }
      },
      "description": "The identity anchor is a mapping between a registry member identity and one or more decentralised identifiers owned by the member. It may also list a set of membership scopes.",
      "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"
      ]
    }
  }
}