Added guards for empty results

src/Angor/Client/Pages/Browse.razor

@@ -77,6 +77,8 @@
     {
         searchInProgress = true;
         var blockchainProjects = await _IndexerService.GetProjectsAsync();
+
+        blockchainProjects = blockchainProjects.Where(_ => _.NostrPubKey != null).ToList();
 
         var projectCreators = SessionStorage.GetProjectSubscribedList();
 

src/Angor/Client/Pages/Create.razor

@@ -405,7 +405,7 @@
 
             if (!response.Success)
             {
-                await _RelayService.DeleteProjectAsync(resultId, NBitcoin.DataEncoders.Encoders.Hex.EncodeData(nostrKey.ToBytes()));
+                await _RelayService.DeleteProjectAsync(resultId, nostrKeyHex);
                 //storage.AddFounderProject(project); TODO remove from storage
                 return response;
             }

src/Angor/Shared/Services/RelayService.cs

@@ -170,14 +170,13 @@ public Task<string> CreateNostrProfileAsync(NostrMetadata metadata, string hexPr
         public Task<string> DeleteProjectAsync(string eventId, string hexPrivateKey)
         {
             var key = NostrPrivateKey.FromHex(hexPrivateKey);
-            
+
             var deleteEvent = new NostrEvent
             {
-                Content = "Failed to publish the transaction to the blockchain",
-                CreatedAt = DateTime.UtcNow,
                 Kind = NostrKind.EventDeletion,
-                Tags = new NostrEventTags(new NostrEventTag("e", eventId),
-                    new NostrEventTag("a",$"{NostrKind.Metadata}:{key.DerivePublicKey().Hex}"))
+                CreatedAt = DateTime.UtcNow,
+                Content = "Failed to publish the transaction to the blockchain",
+                Tags = new NostrEventTags(NostrEventTag.Event(eventId))
             }.Sign(key);
 
             _nostrClient.Send(deleteEvent);