{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://igrm.in/schemas/knowledge-availability-receipt.schema.json",
  "title": "IGRM separately signed knowledge-availability receipt",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "object_type",
    "schema_version",
    "receipt_id",
    "record_sha256",
    "sequence",
    "previous_receipt_file_sha256",
    "release_id",
    "release_manifest_file_sha256",
    "release_record_sha256",
    "release_generated_at",
    "available_at",
    "signer_id",
    "signature_path"
  ],
  "properties": {
    "object_type": {"const": "knowledge_availability_receipt"},
    "schema_version": {"const": "1.0.0"},
    "receipt_id": {"type": "string", "pattern": "^krc:[a-z0-9][a-z0-9._:-]{2,123}$"},
    "record_sha256": {"$ref": "common.schema.json#/$defs/sha256"},
    "sequence": {"type": "integer", "minimum": 1},
    "previous_receipt_file_sha256": {"$ref": "common.schema.json#/$defs/nullableSha256"},
    "release_id": {"$ref": "common.schema.json#/$defs/stableId"},
    "release_manifest_file_sha256": {"$ref": "common.schema.json#/$defs/sha256"},
    "release_record_sha256": {"$ref": "common.schema.json#/$defs/sha256"},
    "release_generated_at": {"$ref": "common.schema.json#/$defs/utcDateTime"},
    "available_at": {"$ref": "common.schema.json#/$defs/utcDateTime"},
    "signer_id": {"$ref": "common.schema.json#/$defs/stableId"},
    "signature_path": {
      "type": "string",
      "pattern": "^(?!/)(?!.*(?:^|/)\\.\\.(?:/|$))(?!.*\\\\).+\\.sig$"
    }
  }
}