{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://alxprotocol.com/protocol/1/schemas/graph-validation-request.schema.json",
  "title": "ALX Graph Validation Request",
  "description": "Portable finite-source encoding of validateGraph(seed, source, context) for ALX v1 conformance.",
  "$comment": "This schema validates the request envelope, not Block validity. Reached Block candidates are deliberately allowed to contain protocol-invalid field values so checked invalid results can be represented by negative vectors.",
  "type": "object",
  "additionalProperties": false,
  "required": ["seed", "source", "context"],
  "properties": {
    "seed": { "$ref": "#/$defs/blockCandidate" },
    "source": {
      "type": "object",
      "additionalProperties": false,
      "required": ["kind", "blocks"],
      "properties": {
        "kind": { "const": "finite" },
        "blocks": {
          "type": "array",
          "items": { "$ref": "#/$defs/blockCandidate" },
          "description": "Order-independent supplied Block candidates. Duplicate and normalization-colliding claimed identities are retained for diagnosis when requested."
        }
      }
    },
    "context": {
      "type": "object",
      "description": "Verification-context candidate. validateGraph validates it against the normative context requirements and rejects malformed contexts before producing a checked result."
    }
  },
  "$defs": {
    "blockCandidate": {
      "type": "object",
      "additionalProperties": false,
      "required": ["blockHash", "contentHash", "parentHashes", "content", "protocolVersion"],
      "properties": {
        "blockHash": { "type": "string" },
        "contentHash": { "type": "string" },
        "parentHashes": { "type": "array" },
        "content": true,
        "protocolVersion": { "type": "string" }
      }
    }
  }
}