How long is the certificate valid for and how is its authenticity verified?

Each certificate has its own public verification page: a unique address that anyone can open to check that it is authentic, who obtained it, with what score, and when. You just need to share that link.

How the recipient verifies it

They open the certificate link and see the official data: holder, level, certified speed and accuracy, issue date, and validity date. If the certificate had been revoked, the page itself would indicate it.

Standard format: certificates are issued as a verifiable digital credential, in an open and recognized format, not as a PDF that anyone can edit. That is the difference between a decorative diploma and a verifiable certification.

About what it accredits: it certifies your speed and accuracy measured in an exam supervised by our systems. It is not an official qualification from the educational administration: no private typing certification is.