{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://melodicbloom.dev/schemas/ecosystem-graph-record.schema.json",
  "title": "Federated Ecosystem Graph Record",
  "type": "object",
  "additionalProperties": false,
  "required": ["id", "kind", "version", "status", "provenance", "relations", "unknowns"],
  "properties": {
    "id": {"type": "string", "minLength": 1},
    "kind": {"type": "string", "enum": ["artifact", "claim", "experiment", "snapshot", "receipt", "token", "platform", "review", "run"]},
    "version": {"type": "string", "pattern": "^[0-9]+\\.[0-9]+\\.[0-9]+$"},
    "intent": {"type": "string"},
    "purpose": {"type": "string"},
    "status": {"type": "string", "enum": ["unknown", "proposed", "blocked", "capture-prepared", "capture-authorized", "evidence-complete-pending-review", "rejected", "superseded", "canonical"]},
    "evidenceClass": {"type": "string", "enum": ["EXACT_MATH", "DERIVED_MATH", "PHYSICAL_MODEL", "EMPIRICAL", "HISTORICAL", "PROJECT_INTERPRETATION", "HYPOTHESIS"]},
    "authority": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "repository": {"type": "string"},
        "ref": {"type": "string"},
        "sha": {"type": "string"},
        "owner": {"type": "string"}
      }
    },
    "parents": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
    "children": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
    "platforms": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
    "provenance": {
      "type": "object",
      "additionalProperties": false,
      "required": ["contentHash", "observedAt", "actor", "sourceFiles"],
      "properties": {
        "contentHash": {"type": "string", "pattern": "^sha256:[a-f0-9]{64}$"},
        "observedAt": {"type": "string", "format": "date-time"},
        "actor": {"type": "string"},
        "sourceFiles": {"type": "array", "items": {"type": "string"}, "minItems": 1},
        "toolVersions": {"type": "array", "items": {"type": "string"}},
        "license": {"type": "string"},
        "rightsStatus": {"type": "string", "enum": ["known", "unknown", "restricted", "rejected"]}
      }
    },
    "relations": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["type", "target", "evidenceState"],
        "properties": {
          "type": {"type": "string", "enum": ["contains", "derived_from", "supersedes", "forked_from", "implements", "tests", "measures", "supports_claim", "contradicts", "blocked_by", "enables", "consumes", "produces", "publishes_to", "requires", "owned_by", "reviewed_by"]},
          "target": {"type": "string"},
          "evidenceState": {"type": "string", "enum": ["observed", "derived", "inferred", "proposed", "unknown"]},
          "confidence": {"type": "number", "minimum": 0, "maximum": 1},
          "receipt": {"type": "string"}
        }
      }
    },
    "unknowns": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
    "claims": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
    "tags": {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
  }
}