diff --git a/demo/App.config b/demo/App.config
index bfe70c7..a13afe7 100644
--- a/demo/App.config
+++ b/demo/App.config
@@ -95,8 +95,13 @@
     <!-- Demo client settings start -->
     <add key="ExtractMyPrivateKeys" value="false" />
     <!-- Demo client settings end -->
+	  
+	  <!--Add a global toggle key start-->
+	  <add key="UseTestnet" value="true" />
+	  <add key="ExtractMyPrivateKeys" value="false" />
+	  <!--Add a global toggle key end-->
 
-    <!--  BitcoinLib settings end -->
+	  <!--  BitcoinLib settings end -->
 
   </appSettings>
 </configuration>
\ No newline at end of file
diff --git a/demo/Program.cs b/demo/Program.cs
index 2a0236a..ac681fa 100644
--- a/demo/Program.cs
+++ b/demo/Program.cs
@@ -16,8 +16,12 @@
 namespace ConsoleClient
 {
     internal sealed class Program
-    {
-        private static readonly ICoinService CoinService = new BitcoinService(useTestnet: true);
+    {
+        // Read 'UseTestnet' flag from App.config instead of hardcoding
+        private static readonly bool UseTestnet = bool.Parse(ConfigurationManager.AppSettings["UseTestnet"]);
+
+        // Inject useTestnet setting into the BitcoinService
+        private static readonly ICoinService CoinService = new BitcoinService(useTestnet: UseTestnet);
 
         private static void Main()
         {