diff --git a/Directory.Build.props b/Directory.Build.props
index b8f8019..fa5f5d8 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <DefaultVersion>2.3.4</DefaultVersion>
+    <DefaultVersion>2.3.5</DefaultVersion>
     <DefaultTargetFrameworks>net6.0;net7.0;net8.0;netstandard2.1;</DefaultTargetFrameworks>
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
   </PropertyGroup>
diff --git a/WalletConnectSharp.Sign/Controllers/AddressProvider.cs b/WalletConnectSharp.Sign/Controllers/AddressProvider.cs
index 53c370c..fafd537 100644
--- a/WalletConnectSharp.Sign/Controllers/AddressProvider.cs
+++ b/WalletConnectSharp.Sign/Controllers/AddressProvider.cs
@@ -145,23 +145,36 @@ private async Task UpdateDefaultChainIdAndNamespaceAsync()
         {
             // Check if current default namespace is still valid with the current session
             var currentDefault = DefaultNamespace;
+
+            
             if (currentDefault != null && DefaultSession.Namespaces.ContainsKey(currentDefault))
             {
+                if (!DefaultSession.Namespaces[DefaultNamespace].TryGetChains(out var approvedChains))
+                {
+                    throw new InvalidOperationException("Could not get chains for current default namespace");
+                }
+                
                 // Check if current default chain is still valid with the current session
                 var currentChain = DefaultChainId;
-                if (currentChain == null || !DefaultSession.Namespaces[DefaultNamespace].Chains.Contains(currentChain))
+
+                if (currentChain == null || !approvedChains.Contains(currentChain))
                 {
                     // If the current default chain is not valid, let's use the first one
-                    DefaultChainId = DefaultSession.Namespaces[DefaultNamespace].Chains[0];
+                    DefaultChainId = approvedChains[0];
                 }
             }
             else
             {
                 // If DefaultNamespace is null or not found in current available spaces, update it
                 DefaultNamespace = DefaultSession.Namespaces.Keys.FirstOrDefault();
-                if (DefaultNamespace != null && DefaultSession.Namespaces[DefaultNamespace].Chains != null)
+                if (DefaultNamespace != null)
                 {
-                    DefaultChainId = DefaultSession.Namespaces[DefaultNamespace].Chains[0];
+                    if (!DefaultSession.Namespaces[DefaultNamespace].TryGetChains(out var approvedChains))
+                    {
+                        throw new InvalidOperationException("Could not get chains for current default namespace");
+                    }
+
+                    DefaultChainId = approvedChains[0];
                 }
                 else
                 {
diff --git a/WalletConnectSharp.Sign/Models/Namespace.cs b/WalletConnectSharp.Sign/Models/Namespace.cs
index 6dc436c..2b1cdef 100644
--- a/WalletConnectSharp.Sign/Models/Namespace.cs
+++ b/WalletConnectSharp.Sign/Models/Namespace.cs
@@ -72,12 +72,12 @@ public Namespace WithAccount(string account)
             return this;
         }
 
-        protected static bool ArrayEquals(string[] a, string[] b)
+        private static bool ArrayEquals(string[] a, string[] b)
         {
-            return a.Length == b.Length && a.All(b.Contains) && b.All(a.Contains);
+            return a.Length == b.Length && Array.TrueForAll(a, b.Contains) && Array.TrueForAll(b, a.Contains);
         }
 
-        protected bool Equals(Namespace other)
+        private bool Equals(Namespace other)
         {
             return ArrayEquals(Accounts, other.Accounts) && ArrayEquals(Methods, other.Methods) &&
                    ArrayEquals(Events, other.Events);
@@ -108,6 +108,41 @@ public override int GetHashCode()
             return HashCode.Combine(Accounts, Methods, Events);
         }
 
+        public bool TryGetChains(out string[] chainIds)
+        {
+            if (Chains is { Length: 0 })
+            {
+                chainIds = Chains;
+                return true;
+            }
+
+            HashSet<string> chainSet = [];
+            foreach (var account in Accounts)
+            {
+                var t = false;
+                for (var i = 0; i < account.Length; i++)
+                {
+                    if (account[i] != ':')
+                    {
+                        continue;
+                    }
+
+                    if (!t)
+                    {
+                        t = true;
+                    }
+                    else
+                    {
+                        chainSet.Add(account[..i]);
+                        break;
+                    }
+                }
+            }
+
+            chainIds = chainSet.ToArray();
+            return true;
+        }
+
         private sealed class NamespaceEqualityComparer : IEqualityComparer<Namespace>
         {
             public bool Equals(Namespace x, Namespace y)