let outpoint = OutPoint::load(*outpoint.value());
      let balances_buffer = balances_buffer.value();

      let mut balances = Vec::new();
      let mut i = 0;
      while i < balances_buffer.len() {
        let (id, length) = runes::varint::decode(&balances_buffer[i..]).unwrap();
        i += length;
        let (balance, length) = runes::varint::decode(&balances_buffer[i..]).unwrap();
        i += length;
        balances.push((RuneId::try_from(id).unwrap(), balance));
      }

      result.push((outpoint, balances));
    }

    result
  }

  pub(crate) fn block_header(&self, hash: BlockHash) -> Result<Option<Header>> {
    self.client.get_block_header(&hash).into_option()
  }

  pub(crate) fn block_header_info(&self, hash: BlockHash) -> Result<Option<GetBlockHeaderResult>> {
    self.client.get_block_header_info(&hash).into_option()
  }

  pub(crate) fn get_block_by_height(&self, height: u32) -> Result<Option<Block>> {
    Ok(
      self
        .client
        .get_block_hash(height.into())
        .into_option()?