How can I get more timestamps? Once you have registered to the service, you will be able to top up your timestamp account by ordering the package you want. Related articles What methods of payment can be used at Universign? I bought 100 timestamps: how long do I have to use them? How can I be sure of the probative value of documents signed with the simple Universign signature? Does Universign store the document I sent to be timestamped? What are the technical requirements for using the Universign web interface? What software do I need?