100 * u64::pow(2, retries),
          ))
          .await;
          retries += 1;
          continue;
        }
      };
      break;
    }

    // Return early on any error, because we need all results to proceed
    if let Some(err) = results.iter().find_map(|res| res.error.as_ref()) {
      return Err(anyhow!(
        "failed to fetch raw transaction: code {} message {}",
        err.code,
        err.message
      ));
    }

    // Results from batched JSON-RPC requests can come back in any order, so we must sort them by id
    results.sort_by(|a, b| a.id.cmp(&b.id));

    let txs = results
      .into_iter()
      .map(|res| {
        res
          .result
          .ok_or_else(|| anyhow!("Missing result for batched JSON-RPC response"))
          .and_then(|str| {
            hex::decode(str)
              .map_err(|e| anyhow!("Result for batched JSON-RPC response not valid hex: {e}"))
          })
          .and_then(|hex| {
            bitcoin::consensus::deserialize(&hex).map_err(|e| {
              anyhow!("Result for batched JSON-RPC response not valid bitcoin tx: {e}")