diff --git a/node/src/rpc_service/handler/proof_handler.rs b/node/src/rpc_service/handler/proof_handler.rs
index f1cda440..788ec241 100644
--- a/node/src/rpc_service/handler/proof_handler.rs
+++ b/node/src/rpc_service/handler/proof_handler.rs
@@ -11,9 +11,21 @@ use std::sync::Arc;
 
 /// Checks if the request host matches the configured proof builder host to prevent forwarding loops.
 fn is_loop_detected(host: &str, request_host: Option<&str>) -> bool {
-    if let Some(request_host) = request_host {
-        host == request_host
-            || host.starts_with(&format!("{}:", request_host.split(':').next().unwrap_or("")))
+    if let Some(req_host) = request_host {
+        let mut clean_host = host;
+
+        // Remove scheme if present (e.g. "http://")
+        if let Some(rest) = clean_host.strip_prefix("http://") {
+            clean_host = rest;
+        } else if let Some(rest) = clean_host.strip_prefix("https://") {
+            clean_host = rest;
+        }
+
+        // Remove trailing slash
+        clean_host = clean_host.trim_end_matches('/');
+
+        // Case-insensitive comparison
+        clean_host.eq_ignore_ascii_case(req_host)
     } else {
         false
     }