{
  "type": "object",
  "title": "RosettaParentBlockIdentifier",
  "additionalProperties": false,
  "description": "The block_identifier uniquely identifies a block in a particular network.",
  "required": ["index", "hash"],
  "properties": {
    "index": {
      "type": "integer",
      "description": "This is also known as the block height."
    },
    "hash": {
      "type": "string",
      "description": "Block hash"
    }
  }
}