{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://search.sukuux.com/data/registry/schemas/provenance.schema.json",
  "title": "Sukuu Search Provenance Event",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "source_id",
    "observed_at",
    "verification_status"
  ],
  "properties": {
    "source_id": {
      "type": "string",
      "minLength": 1
    },
    "source_record_id": {
      "type": [
        "string",
        "null"
      ]
    },
    "source_url": {
      "type": [
        "string",
        "null"
      ],
      "format": "uri"
    },
    "observed_at": {
      "type": "string",
      "format": "date-time"
    },
    "published_at": {
      "type": [
        "string",
        "null"
      ]
    },
    "verification_status": {
      "type": "string",
      "enum": [
        "official_source_observed",
        "official_snapshot",
        "institution_supplied",
        "sukuu_verified",
        "derived",
        "unverified"
      ]
    },
    "confidence": {
      "type": [
        "number",
        "null"
      ],
      "minimum": 0,
      "maximum": 1
    },
    "harvest_method": {
      "type": [
        "string",
        "null"
      ]
    },
    "content_fingerprint": {
      "type": [
        "string",
        "null"
      ]
    },
    "notes": {
      "type": [
        "string",
        "null"
      ]
    }
  }
}