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What is an electronic signature
What is an electronic signature
クラウドサイン運営事務局 avatar
Written by クラウドサイン運営事務局
Updated over a week ago

Information recorded in electronic signatures and their role

  • Email address of the sender and recipient, date and time of agreement, and authentication method used for agreement

  • Document content has not been tampered with after agreement concluded (non-tamper evidence)

An electronic signature is a cryptographic processing scheme that identifies the person who created electronic files (, Inc. in the case of the company operating this service) and proves that the electronic file has not been tampered with. For the applied documents, the technology certifies “who” concluded the contract for “what.”

CloudSign uses the Adobe Approved Trust List (AATL) that offers an exceptional level of reliability.


The electronic signatures that are applied using this service are recorded with the following information.

Electronic signature information can be viewed by opening a PDF file using Adobe Acrobat Reader (free). See here for details on how to check this information.



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