return Ok(None);
    }

    let array = outpoint.store();

    let sat_ranges = self.list_inner(array)?;

    match sat_ranges {
      Some(sat_ranges) => Ok(Some(List::Unspent(
        sat_ranges
          .chunks_exact(11)
          .map(|chunk| SatRange::load(chunk.try_into().unwrap()))
          .collect(),
      ))),
      None => {
        if self.is_transaction_in_active_chain(outpoint.txid)? {
          Ok(Some(List::Spent))
        } else {
          Ok(None)
        }
      }
    }
  }

  pub(crate) fn block_time(&self, height: Height) -> Result<Blocktime> {
    let height = height.n();

    match self.get_block_by_height(height)? {
      Some(block) => Ok(Blocktime::confirmed(block.header.time)),
      None => {
        let tx = self.database.begin_read()?;

        let current = tx
          .open_table(HEIGHT_TO_BLOCK_HASH)?
          .range(0..)?
          .next_back()
          .and_then(|result| result.ok())
          .map(|(height, _hash)| height)
          .map(|x| x.value())
          .unwrap_or(0);