The electronic VAT invoice issued by taxpayers through the VAT electronic invoice service platform will be stamped with electronic signature.

Electronic signature adopts image processing technology and electronic signature technology to digitize the traditional signature and realize the stamping operation of electronic documents.

Electronic signature uses electronic signature technology to ensure the authenticity and integrity of electronic information and the undeniable nature of the signer.

After the taxpayer obtains the invoice, use the reader to open the format file of the electronic invoice, move the mouse to the seller area of the VAT electronic invoice or the invoice producer seal area, click the right mouse button, and click the "Verify" button to check whether the signature is valid.