Expected value in hex instead of base64

src/main.rs

@@ -1,4 +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 serde::{Deserialize, Serialize};
 use std::time::{Duration, SystemTime, UNIX_EPOCH};
 
@@ -207,7 +208,7 @@ async fn handle_store(mut req: Request<()>) -> tide::Result<Response> {
         .ok_or(tide::Error::from_str(StatusCode::BadRequest, "Invalid ttl"))?;
 
     // Decode the value from Base64
-    let value_bytes = match base64::decode(&data.value) {
+    let value_bytes = match Vec::from_hex(&data.value) {
         Ok(value) => value,
         Err(e) => {
             return Ok(Response::builder(StatusCode::BadRequest)