System, server apparatus, control method of server apparatus, and non-transitory computer-readable storage medium

A server apparatus comprising:

• at least one memory storing a set of instructions;
• and
• at least one processor configured to execute the set of instructions to:
• acquire a certificate, the certificate certifying predetermined matters and being issued in a VCs (Verifiable Credentials) format, in a case where a user requests provision of advice from a service provider;
• verify the acquired certificate;
• generate, in a case where verification of the certificate succeeds, the advice based on the predetermined matters that the certificate certifies;
• and
• output the generated advice.

A control method of a server apparatus, the control method comprising:

• acquiring a certificate, the certificate certifying predetermined matters and being issued in a VCs (Verifiable Credentials) format, in a case where a user requests provision of advice from a service provider;
• verifying the acquired certificate;
• generating, in a case where verification of the certificate succeeds, the advice based on the predetermined matters that the certificate certifies;
• and
• outputting the generated advice.