Attestation

Ausweis

(such a confirmation or authentication)

Beglaubigung

(providing an independent opinion, on published information of an organization, by accountants or auditors)

Beleg

(something which bears witness, confirms or authenticates)

Beleg

(linguistics: appearance in records)

Bestätigung

(something which bears witness, confirms or authenticates)

Bestätigung

(such a confirmation or authentication)

Beweis

(something which bears witness, confirms or authenticates)

Nachweis

(such a confirmation or authentication)

Urkunde

(such a confirmation or authentication)

Zeugnis

(such a confirmation or authentication)