{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://publicschema.org/land/LandTenureAssertion.schema.json",
  "title": "LandTenureAssertion",
  "description": "A statement that a party holds, or claims, a right, restriction or responsibility over an identified land administrative unit during a stated period. It records the claim and its evidence. It does not decide between competing claims and does not convert customary or informal tenure into registered ownership. Some restrictions and responsibilities have no named holder.",
  "type": "object",
  "properties": {
    "tenure_holder": {
      "type": "string",
      "format": "uri",
      "description": "The person, organization or group that holds or claims the right, or bears the restriction or responsibility. It may be absent for restrictions attached to the land alone. The URI does not create legal personality."
    },
    "tenure_object": {
      "oneOf": [
        {
          "$ref": "https://publicschema.org/land/LandAdministrativeUnit.schema.json"
        },
        {
          "type": "string",
          "description": "URI or identifier reference"
        }
      ],
      "description": "The land administrative unit to which the right, restriction or responsibility applies."
    },
    "tenure_category": {
      "type": "string",
      "enum": [
        "right",
        "restriction",
        "responsibility"
      ],
      "$comment": "https://publicschema.org/vocab/land/tenure-category",
      "description": "Whether the assertion concerns a right, a restriction or a responsibility."
    },
    "tenure_type": {
      "$ref": "https://publicschema.org/CodedValue.schema.json",
      "description": "The statutory, customary or informal kind of tenure asserted, coded in a stated classification and kept as recorded, without conversion to ownership."
    },
    "tenure_share_numerator": {
      "type": "integer",
      "description": "The numerator of the holder's share of the right, restriction or responsibility, stated as a fraction of whole numbers with tenure_share_denominator, such as 1 of 3. The numerator does not exceed the denominator. Shares in competing claims are not normalized or added.",
      "minimum": 0
    },
    "tenure_share_denominator": {
      "type": "integer",
      "description": "The denominator of the holder's share of the right, restriction or responsibility, stated with tenure_share_numerator. A share of 1 of 1 is the entire interest.",
      "minimum": 1
    },
    "valid_from": {
      "type": "string",
      "format": "date",
      "description": "The first calendar day on which the registration, permission, certification or other stated fact applies, as its source states it, when known. A later suspension, withdrawal or correction is recorded separately and does not overwrite this date."
    },
    "valid_to": {
      "type": "string",
      "format": "date",
      "description": "The last calendar day on which the registration, permission, certification or other stated fact applies, as its source states it. A later suspension, withdrawal or correction is recorded separately and does not overwrite this date. If absent, the end is unknown, not unlimited."
    },
    "evidence_assertions": {
      "type": "array",
      "items": {
        "oneOf": [
          {
            "$ref": "https://publicschema.org/EvidenceAssertion.schema.json"
          },
          {
            "type": "string",
            "description": "URI or identifier reference"
          }
        ],
        "description": "Statements identifying sources that support or contradict this statement."
      }
    }
  }
}