{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.metaconceptualart.com/data/profile/metaconceptual-art-claim.schema.json",
  "title": "Metaconceptual Art Claim",
  "description": "Lightweight validation schema for checking whether a future claim or work has the minimum evidence expected by the Metaconceptual Art Linked Open Art Profile.",
  "type": "object",
  "required": [
    "id",
    "type",
    "label",
    "definition",
    "genealogy",
    "principles",
    "works",
    "standards",
    "externalAuthorities",
    "provenance"
  ],
  "properties": {
    "id": {
      "type": "string",
      "format": "uri",
      "description": "Stable canonical URI for the claim."
    },
    "type": {
      "const": "MetaconceptualArtClaim"
    },
    "label": {
      "type": "string",
      "minLength": 1
    },
    "definition": {
      "type": "string",
      "minLength": 40
    },
    "genealogy": {
      "type": "array",
      "minItems": 3,
      "items": { "$ref": "#/$defs/evidenceLink" }
    },
    "principles": {
      "type": "array",
      "minItems": 1,
      "items": { "$ref": "#/$defs/evidenceLink" }
    },
    "works": {
      "type": "array",
      "minItems": 1,
      "items": { "$ref": "#/$defs/evidenceLink" }
    },
    "standards": {
      "type": "array",
      "minItems": 3,
      "items": { "$ref": "#/$defs/evidenceLink" }
    },
    "externalAuthorities": {
      "type": "array",
      "minItems": 3,
      "items": { "$ref": "#/$defs/evidenceLink" }
    },
    "provenance": {
      "type": "array",
      "minItems": 1,
      "items": { "$ref": "#/$defs/evidenceLink" }
    },
    "limitations": {
      "type": "string",
      "description": "A clear statement of what the claim does not prove, especially external canonization."
    }
  },
  "$defs": {
    "evidenceLink": {
      "type": "object",
      "required": ["label", "url"],
      "properties": {
        "label": {
          "type": "string",
          "minLength": 1
        },
        "url": {
          "type": "string",
          "format": "uri"
        },
        "authority": {
          "type": "string",
          "description": "Optional authority namespace or standard, such as Linked Art, Wikidata, Getty AAT, IIIF, schema.org, or local."
        },
        "role": {
          "type": "string",
          "description": "How this evidence supports the claim."
        },
        "publicationStatus": {
          "type": "string",
          "enum": ["public", "metadata-only", "forthcoming", "private"],
          "description": "Optional publication status for work evidence. Missing means public; private and forthcoming works do not count as public evidence."
        }
      },
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}