{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schemas.wtf-p.dev/project/evidence/v1",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema",
    "id",
    "project_id",
    "source_uri",
    "claim_id",
    "relation",
    "statement",
    "locator",
    "interpretation",
    "confidence",
    "inspection_depth",
    "verified_at"
  ],
  "properties": {
    "schema": { "const": "wtfp.project.evidence/v1" },
    "id": { "$ref": "https://schemas.wtf-p.dev/project/common/v1#/$defs/identifier" },
    "project_id": { "$ref": "https://schemas.wtf-p.dev/project/common/v1#/$defs/identifier" },
    "source_uri": { "type": "string", "pattern": "^project://sources/[A-Za-z0-9._~-]+$" },
    "claim_id": { "$ref": "https://schemas.wtf-p.dev/project/common/v1#/$defs/identifier" },
    "relation": { "enum": ["supports", "contradicts", "contextualizes", "method-precedent"] },
    "statement": { "$ref": "https://schemas.wtf-p.dev/project/common/v1#/$defs/nonEmptyString" },
    "locator": {
      "type": "object",
      "additionalProperties": false,
      "required": ["kind", "value"],
      "properties": {
        "kind": { "enum": ["page", "section", "figure", "table", "timestamp", "record", "abstract"] },
        "value": { "$ref": "https://schemas.wtf-p.dev/project/common/v1#/$defs/nonEmptyString" }
      }
    },
    "quote": { "type": "string", "minLength": 1 },
    "interpretation": { "$ref": "https://schemas.wtf-p.dev/project/common/v1#/$defs/nonEmptyString" },
    "limitations": {
      "type": "array",
      "items": { "$ref": "https://schemas.wtf-p.dev/project/common/v1#/$defs/nonEmptyString" },
      "uniqueItems": true
    },
    "confidence": { "$ref": "https://schemas.wtf-p.dev/project/common/v1#/$defs/confidence" },
    "inspection_depth": { "enum": ["metadata", "abstract", "full-text", "primary-data"] },
    "verified_at": { "$ref": "https://schemas.wtf-p.dev/project/common/v1#/$defs/timestamp" }
  }
}