Igrantio Credential Schema Student Id

Student ID - credential schema

When to use

Use this skill when you issue or verify a Student ID credential. The credential attests that a person is a student, and it carries the eduPerson and SCHAC attributes that the education federations use.

The registry gives the credential type VerifiableStudentID for SD-JWT VC (dc+sd-jwt) and for mdoc (mso_mdoc), and VerifiableStudentIDJWT for W3C JWT VC (jwt_vc_json). The namespace in the metadata is eu.europa.ec.eudi.studentid.1.

The registry keeps this schema under credentialSchemas/claimPathPointer/studentId. Version 2025.7.1 is the latest version directory, and this skill uses it. The registry publishes the schema in three formats: dc+sd-jwt, jwt_vc_json and mso_mdoc.

What the claims describe

Every claim in this schema is mandatory. The three formats hold the same claim names.

• Person: firstName, familyName, commonName, displayName, dateOfBirth and mail.
• Identifiers: id, identifier, eduPersonPrincipalName, schacPersonalUniqueID, and schacPersonalUniqueCode (an array).
• Affiliation: eduPersonPrimaryAffiliation for the main role, eduPersonAffiliation (an array) for every role, and eduPersonScopedAffiliation (an array) for the role with the organisation scope.
• Organisation and assurance: schacHomeOrganization for the home institution, and eduPersonAssurance (an array) for the identity assurance profiles.

Four claims are arrays, so their pointers end with null: eduPersonAffiliation, eduPersonAssurance, eduPersonScopedAffiliation and schacPersonalUniqueCode.

Claim path pointer documents

Each document below is the file that the registry holds. Copy it without a change.

SD-JWT VC (dc+sd-jwt)

{
  "claims": [
    {
      "path": [
        "commonName"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "dateOfBirth"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "displayName"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "eduPersonAffiliation",
        null
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "eduPersonAssurance",
        null
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "eduPersonPrimaryAffiliation"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "eduPersonPrincipalName"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "eduPersonScopedAffiliation",
        null
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "familyName"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "firstName"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "id"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "identifier"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "mail"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "schacHomeOrganization"
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "schacPersonalUniqueCode",
        null
      ],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": [
        "schacPersonalUniqueID"
      ],
      "mandatory": true,
      "limitDisclosure": true
    }
  ]
}

W3C JWT VC (jwt_vc_json)

This format uses the credential type VerifiableStudentIDJWT, not VerifiableStudentID. The document also has no limitDisclosure field, because jwt_vc_json has no selective disclosure.

{
  "claims": [
    {
      "path": ["credentialSubject", "commonName"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "dateOfBirth"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "displayName"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "eduPersonAffiliation", null],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "eduPersonAssurance", null],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "eduPersonPrimaryAffiliation"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "eduPersonPrincipalName"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "eduPersonScopedAffiliation", null],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "familyName"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "firstName"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "id"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "identifier"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "mail"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "schacHomeOrganization"],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "schacPersonalUniqueCode", null],
      "mandatory": true
    },
    {
      "path": ["credentialSubject", "schacPersonalUniqueID"],
      "mandatory": true
    }
  ]
}

mdoc (mso_mdoc)

The first element of every path is eu.europa.ec.eudi. That value is the mDoc namespace of the claims. It is not the same string as the doctype eu.europa.ec.eudi.studentid.1. Send the doctype in the doctype field, and keep eu.europa.ec.eudi as the first path element, as the registry has it.

{
  "claims": [
    {
      "path": ["eu.europa.ec.eudi", "commonName"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "dateOfBirth"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "displayName"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "eduPersonAffiliation", null],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "eduPersonAssurance", null],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "eduPersonPrimaryAffiliation"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "eduPersonPrincipalName"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "eduPersonScopedAffiliation", null],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "familyName"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "firstName"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "id"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "identifier"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "mail"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "schacHomeOrganization"],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "schacPersonalUniqueCode", null],
      "mandatory": true,
      "limitDisclosure": true
    },
    {
      "path": ["eu.europa.ec.eudi", "schacPersonalUniqueID"],
      "mandatory": true,
      "limitDisclosure": true
    }
  ]
}

How to read a claim path pointer

A claim path pointer selects one claim in the credential. Each item of the claims array holds these fields.

• path is mandatory and holds at least one element. Read the elements from left to right. A string element selects an object key. An integer element selects one array index. A null element selects every element of an array, so ["nationalities", null] covers each entry of the nationalities array.
• mandatory says whether the issuer must supply a value for the claim. The issuer reads a missing mandatory field as true.
• limitDisclosure says that the holder can disclose the claim on its own. Set it only inside the claims object of a dc+sd-jwt or mso_mdoc configuration. The jwt_vc_json format has no selective disclosure, so its documents leave the field out.

A path that names a parent object, such as ["address"], and a path that names a child, such as ["address", "country"], can both appear. The parent pointer lets the holder disclose the full object. The child pointers let the holder disclose one field at a time.

For mso_mdoc, the first element of the path is the mDoc namespace, every path holds at least two elements, and every path of one configuration uses the same first element.

For jwt_vc_json, the first element of the path is always credentialSubject.

Use with the iGrant.io API

Create a credential definition with POST /v2/config/digital-wallet/openid/sdjwt/credential-definition. Put the claims array of the registry document into the configuration entry, and set the format fields that the table above gives.

{
  "label": "Issue Student ID",
  "version": "version_01",
  "credentialDefinitions": [
    {
      "credentialFormat": "dc+sd-jwt",
      "vct": "VerifiableStudentID",
      "validationPath": "$",
      "claims": {
        "claims": [
          {
            "path": [
              "commonName"
            ],
            "mandatory": true,
            "limitDisclosure": true
          },
          {
            "path": [
              "dateOfBirth"
            ],
            "mandatory": true,
            "limitDisclosure": true
          }
        ]
      }
    }
  ]
}

Notes on the request.

• label must hold at least 3 characters. The platform reserves the labels Payment User Credential, Payment Card Credential, Payment Account Credential, PID Issuance and Photo ID Issuance, so pick another label.
• Always send version with the value version_01. The issuer falls back to an earlier version of the specification when you leave the field out, and you cannot change the value after you create the credential definition.
• Add one entry of credentialDefinitions[] for each format that you want to publish. You can publish more than one format from one credential definition.
• Keep the id that the response returns for each entry. The issue operation uses that value to match the claims to a configuration.
• Add supportRevocation, revocationMethod, expirationInDays, display and the other entry fields as your use case needs them.

Read igrantio-api-issuer for the full operation reference, the other request fields, and the issue operation that follows.

Source is the registry

The verifiable data registry is the source of truth. If this skill and the registry file disagree, the registry wins. Fetch the source before you rely on a claim path, and report the difference so this skill can be corrected.

• Template directory: https://github.com/decentralised-dataexchange/verifiable-data-registry/tree/main/credentialSchemas/claimPathPointer/studentId
• Raw dc+sd-jwt document: https://raw.githubusercontent.com/decentralised-dataexchange/verifiable-data-registry/main/credentialSchemas/claimPathPointer/studentId/2025.7.1/dc+sd-jwt.schema.json
• The metadata file sits next to each schema file, with the suffix .schema.metadata.json. It carries the title, the credential type, the doctype and the format flags.

Cross-references

• igrantio-api-issuer - the create credential definition and issue credential operations.
• igrantio-api-verifier - the DCQL query that asks a holder for a Student ID credential.
• igrantio-ows-overview - architecture and glossary.