{
  "type": "object",
  "title": "RosettaBlockIdentifierHash",
  "description": "This is also known as the block hash.",
  "additionalProperties": false,
  "required": ["hash"],
  "properties": {
    "hash": {
      "type": "string",
      "description": "This is also known as the block hash."
    }
  }
}