diff --git a/src/main.rs b/src/main.rs
index ac8f44d..7f4638c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,5 @@
 use async_std::fs::{create_dir_all, read_dir, read_to_string, remove_file, File};
-use sdk_common::sp_client::bitcoin::hex::FromHex;
+use sdk_common::sp_client::bitcoin::hex::{DisplayHex, FromHex};
 use serde::{Deserialize, Serialize};
 use std::time::{Duration, SystemTime, UNIX_EPOCH};
 
@@ -243,7 +243,7 @@ async fn handle_retrieve(req: Request<()>) -> tide::Result<Response> {
 
     match retrieve_data(&key).await {
         Ok(value) => {
-            let encoded_value = base64::encode(&value);
+            let encoded_value = value.to_lower_hex_string();
             Ok(Response::builder(StatusCode::Ok)
                 .body(serde_json::to_value(&RetrieveResponse {
                     key,