diff --git a/packages/ndk/lib/data_layer/repositories/verifiers/bip340_event_verifier.dart b/packages/ndk/lib/data_layer/repositories/verifiers/bip340_event_verifier.dart
index 8ff616ae3..2a46fd100 100644
--- a/packages/ndk/lib/data_layer/repositories/verifiers/bip340_event_verifier.dart
+++ b/packages/ndk/lib/data_layer/repositories/verifiers/bip340_event_verifier.dart
@@ -1,4 +1,7 @@
+import 'dart:isolate';
+
 import 'package:bip340/bip340.dart' as bip340;
+import 'package:ndk/shared/isolates/isolate_manager.dart';
 
 import '../../../domain_layer/entities/nip_01_event.dart';
 import '../../../domain_layer/entities/nip_01_utils.dart';
@@ -7,10 +10,20 @@ import '../../../domain_layer/repositories/event_verifier.dart';
 /// Pure dart event verifier using https://pub.dev/packages/bip340
 /// can be slow on mobile devices
 class Bip340EventVerifier implements EventVerifier {
+  bool useIsolate = true;
+
+  Bip340EventVerifier({this.useIsolate = true});
+
   @override
   Future<bool> verify(Nip01Event event) async {
+    if (event.sig == null) {
+      return false;
+    }
     if (!Nip01Utils.isIdValid(event)) return false;
-
-    return bip340.verify(event.pubKey, event.id, event.sig!);
+    return useIsolate? await await IsolateManager.instance.runInComputeIsolate<Nip01Event, bool>((event) {
+      return bip340.verify(event.pubKey, event.id, event.sig!);
+    },
+    event
+    ) : bip340.verify(event.pubKey, event.id, event.sig!);
   }
 }
diff --git a/packages/sample-app/lib/query_performance.dart b/packages/sample-app/lib/query_performance.dart
index 59ccc5cb7..fd028e32b 100644
--- a/packages/sample-app/lib/query_performance.dart
+++ b/packages/sample-app/lib/query_performance.dart
@@ -122,10 +122,10 @@ class _QueryPerformancePageState extends State<QueryPerformancePage> {
               onPressed: _isVerifyingBip340 ? null : _runBip340Query,
               child: _isVerifyingBip340
                   ? const SizedBox(
-                      height: 20,
-                      width: 20,
-                      child: CircularProgressIndicator(strokeWidth: 2),
-                    )
+                height: 20,
+                width: 20,
+                child: CircularProgressIndicator(strokeWidth: 2),
+              )
                   : const Text('Run with BIP340'),
             ),
             const SizedBox(height: 8),
@@ -139,10 +139,10 @@ class _QueryPerformancePageState extends State<QueryPerformancePage> {
               onPressed: _isVerifyingRust ? null : _runRustQuery,
               child: _isVerifyingRust
                   ? const SizedBox(
-                      height: 20,
-                      width: 20,
-                      child: CircularProgressIndicator(strokeWidth: 2),
-                    )
+                height: 20,
+                width: 20,
+                child: CircularProgressIndicator(strokeWidth: 2),
+              )
                   : const Text('Run with Rust'),
             ),
             const SizedBox(height: 8),