code: func (c *Client) VerifyChainBlocks(checkLevel, numBlocks int32) (bool, error) {
  	return c.VerifyChainBlocksAsync(checkLevel, numBlocks).Receive()
  }
docs: // VerifyChainBlocks requests the server to verify the block chain database
  // using the passed check level and number of blocks to verify.
  //
  // The check level controls how thorough the verification is with higher numbers
  // increasing the amount of checks done as consequently how long the
  // verification takes.
  //
  // The number of blocks refers to the number of blocks from the end of the
  // current longest chain.
  //
  // See VerifyChain and VerifyChainLevel to use defaults.