On the right side of every entry in LabArchives you will see a timestamp indicating the most recent change made to that entry. This timestamp is generated by a trusted global time source and cannot be changed. The timezone displayed is based on your system clock however it is not possible for a user to create a false timestamp.
Every action in your notebook, whether it is an addition, a deletion, or a revision, gets a unique timestamp. You can view every change made to your data through the revisions History. For more information on the revisions history Click Here.