# Timestamp

> The timestamp associated with the generated mesh.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.XR](/engine/6000.5/script-reference/unityengine/xr.md)
* **Assembly:** UnityEngine.XRModule

```csharp
public readonly ulong Timestamp { get; }
```

### Remarks

Because generation is asynchronous, the transform provided by this [MeshGenerationResult](/engine/6000.5/script-reference/unityengine/xr/meshgenerationresult.md) may be older than the most recent transform provided by [XRMeshSubsystem.GetUpdatedMeshTransforms](/engine/6000.5/script-reference/unityengine/xr/xrmeshsubsystem/getupdatedmeshtransforms.md). Compare timestamps to ensure you are using the most recent transform.

Additional Resources: [XRMeshSubsystem.GenerateMeshAsync](/engine/6000.5/script-reference/unityengine/xr/xrmeshsubsystem/generatemeshasync.md), [XRMeshSubsystem.GetUpdatedMeshTransforms](/engine/6000.5/script-reference/unityengine/xr/xrmeshsubsystem/getupdatedmeshtransforms.md)