These stamp certificates have the same legal status as traditional stamps printed on instruments. To download buffer apps in large quantities for the broadcast document, please click on the following links to view the demo videos. Upon receipt of an application for a stamp containing the necessary documents and payment, the Stamp Office shall issue either a certificate of stamp for the instrument or mark a stamp on the document. As with other electronic services on the Internet, online authentication is required before using the service. You can use the 24-hour electronic stamp service to file electronic stamp applications for: you can file stamp applications in large quantities with a maximum of 5,000 instruments at the same time and pay the stamp duty by a single payment.