diff --git a/SabreTools.Serialization/Extensions/XboxExecutable.cs b/SabreTools.Serialization/Extensions/XboxExecutable.cs
index 2d9d3490..3f89d23e 100644
--- a/SabreTools.Serialization/Extensions/XboxExecutable.cs
+++ b/SabreTools.Serialization/Extensions/XboxExecutable.cs
@@ -1,3 +1,4 @@
+using System;
 using SabreTools.IO.Extensions;
 
 namespace SabreTools.Data.Extensions
@@ -5,13 +6,12 @@ namespace SabreTools.Data.Extensions
     public static class XboxExecutable
     {
         /// <summary>
-        /// Convert a 4-byte value to a formatted XBE title ID
+        /// Convert a UInt32 to a formatted XBE title ID
         /// </summary>
-        public static string? ToFormattedXBETitleID(this byte[]? data)
+        public static string? ToFormattedXBETitleID(this uint value)
         {
-            // Ignore invalid data
-            if (data is null || data.Length < 4)
-                return null;
+            // Convert to a byte array
+            byte[] data = BitConverter.GetBytes(value);
 
             // Create the prefix
             string prefix1 = (0x41 <= data[3] && data[3] <= 0x5A) || (0x30 <= data[3] && data[3] <= 0x39)
diff --git a/SabreTools.Serialization/Models/XboxExecutable/Certificate.cs b/SabreTools.Serialization/Models/XboxExecutable/Certificate.cs
index fbfa7d78..6a289109 100644
--- a/SabreTools.Serialization/Models/XboxExecutable/Certificate.cs
+++ b/SabreTools.Serialization/Models/XboxExecutable/Certificate.cs
@@ -21,8 +21,7 @@ namespace SabreTools.Data.Models.XboxExecutable
         /// Title ID for this application. This field doesn't appear to matter with
         /// unsigned code, so it can be set to zero.
         /// </summary>
-        /// <remarks>4 bytes</remarks>
-        public byte[] TitleID { get; set; } = new byte[4];
+        public uint TitleID { get; set; }
 
         /// <summary>
         /// Title name for this application (i.e. L"The Simpsons Road Rage").
@@ -35,7 +34,7 @@ namespace SabreTools.Data.Models.XboxExecutable
         /// to matter with unsigned code (or signed code, for that matter), so they can all
         /// be set to zero.
         /// </summary>
-        public byte[][] AlternativeTitleIDs { get; set; } = new byte[16][];
+        public uint[] AlternativeTitleIDs { get; set; } = new uint[16];
 
         /// <summary>
         /// Allowed media types for this .XBE.
diff --git a/SabreTools.Serialization/Readers/XboxExecutable.cs b/SabreTools.Serialization/Readers/XboxExecutable.cs
index a27b40fe..60f238be 100644
--- a/SabreTools.Serialization/Readers/XboxExecutable.cs
+++ b/SabreTools.Serialization/Readers/XboxExecutable.cs
@@ -153,13 +153,13 @@ namespace SabreTools.Serialization.Readers
 
             obj.SizeOfCertificate = data.ReadUInt32LittleEndian();
             obj.TimeDate = data.ReadUInt32LittleEndian();
-            obj.TitleID = data.ReadBytes(4);
+            obj.TitleID = data.ReadUInt32LittleEndian();
             obj.TitleName = data.ReadBytes(0x50);
 
-            obj.AlternativeTitleIDs = new byte[16][];
+            obj.AlternativeTitleIDs = new uint[16];
             for (int i = 0; i < obj.AlternativeTitleIDs.Length; i++)
             {
-                obj.AlternativeTitleIDs[i] = data.ReadBytes(4);
+                obj.AlternativeTitleIDs[i] = data.ReadUInt32LittleEndian();
             }
 
             obj.AllowedMediaTypes = (AllowedMediaTypes)data.ReadUInt32LittleEndian();
diff --git a/SabreTools.Serialization/Wrappers/XboxExecutable.cs b/SabreTools.Serialization/Wrappers/XboxExecutable.cs
index 729d67fd..9125e1db 100644
--- a/SabreTools.Serialization/Wrappers/XboxExecutable.cs
+++ b/SabreTools.Serialization/Wrappers/XboxExecutable.cs
@@ -18,7 +18,7 @@ namespace SabreTools.Serialization.Wrappers
         #region Extension Properties
 
         /// <inheritdoc cref="Certificate.AlternativeTitleIDs"/>
-        public byte[][]? AlternativeTitleIDsBytes => Certificate?.AlternativeTitleIDs;
+        public uint[]? AlternativeTitleIDs => Certificate?.AlternativeTitleIDs;
 
         /// <inheritdoc cref="Certificate.AlternativeTitleIDs"/>
         public string[]? AlternativeTitleIDsStrings
@@ -26,10 +26,10 @@ namespace SabreTools.Serialization.Wrappers
             get
             {
                 // Ignore invalid alternative title IDs
-                if (AlternativeTitleIDsBytes is null)
+                if (AlternativeTitleIDs is null)
                     return null;
 
-                return Array.ConvertAll(AlternativeTitleIDsBytes, ba => ba.ToFormattedXBETitleID() ?? "[NULL]");
+                return Array.ConvertAll(AlternativeTitleIDs, ba => ba.ToFormattedXBETitleID() ?? "[NULL]");
             }
         }
 
@@ -71,10 +71,10 @@ namespace SabreTools.Serialization.Wrappers
         public ThreadLocalStorage? ThreadLocalStorage => Model.ThreadLocalStorage;
 
         /// <inheritdoc cref="Certificate.TitleID"/>
-        public byte[]? TitleIDBytes => Certificate?.TitleID;
+        public uint TitleID => Certificate?.TitleID ?? 0;
 
         /// <inheritdoc cref="Certificate.TitleID"/>
-        public string? TitleIDString => TitleIDBytes.ToFormattedXBETitleID();
+        public string? TitleIDString => TitleID.ToFormattedXBETitleID();
 
         /// <inheritdoc cref="Certificate.TitleName"/>
         public string? TitleName