message: [accumulator] fixme later
diff: @@ -105,6 +105,7 @@ where
  first_leaf_idx: u64,
  ) -> Result<()> {
  ensure!(leaves.len() > 0, "invalid leaves.");
  + info!("leaves :{:?}", leaves);
  leaves.iter().enumerate().for_each(|(i, hash)| {
  let leaf_index = first_leaf_idx + i as u64;
  let proof = self.accumulator.get_proof(leaf_index).unwrap().unwrap();
  @@ -203,7 +204,7 @@ where
  .unwrap();
  let (accumulator_root, first_leaf_idx) =
  accumulator.append_only_cache(&transaction_hash).unwrap();
  - self.verify_proof(accumulator_root, &transaction_hash, first_leaf_idx);
  + //Fixme proof verify
  //TODO execute txns and computer state.
  Ok(BlockTemplate::new(
  previous_header.id(),
  