{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schema.nfh.global/IdRef/v1.0",
  "$defs": {
    "IdRef": {
      "$anchor": "IdRef",
      "type": "object",
      "required": ["issuedBy", "subjectId"],
      "properties": {
        "issuedBy":  { "type": "string", "format": "uri" },
        "subjectId": { "type": "string", "pattern": "^[A-Za-z0-9._-]+:[A-Za-z0-9X_-]+$" }
      },
      "additionalProperties": false
    }
  }
}