Zero Knowledge Evidence Technology

(1) Provided Functionalities

Web APIs providing a mechanism of zero knowledge evidence technology which enables a third party to check issuance of contents issued by an issuer as a digital certificate to a holder online. In this provided function, the issue history of this certificate with the signatures of the issuer and the holder is anonymized and stored in an issue history storage area, and a verifier can verify the anonymized issue history by using a zero-knowledge proof protocol.

(2) Restrictions

1. Requirements related to hardware, software, communication, etc. required by Users for the execution of the provided functionalities shall be separately specified in the manual for the provided functionalities.
2. If a User violates these terms of use when using the provided functionalities, Fujitsu may restrict the User's use of the provided functionalities or suspend the account of the User.
3. In using the provided functionalities, the User shall input only fictitious data, and shall not input information (including, but not limited to, personal information and confidential information) of real individuals, organizations, etc.
4. Fujitsu shall not intervene in any trouble arising between Users when using the provided functionalities for any reason whatsoever, and shall not be responsible for any disadvantage or damage suffered by Users or third parties.