# Certificates
The public authorities can issue a range of certificates. For example, registry offices issue birth, marriage and death certificates from the civil status register.
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If you want to use the online ID function as a provider in your own application, you need an authorisation certificate.
If you need proof of birth to be presented to foreign bodies, you can apply for a multilingual birth certificate.
Ein beglaubigter Ausdruck aus dem Geburtenregister gibt alle Daten wieder, die das Standesamt im Zusammenhang mit der Geburt beurkundet hat sowie spätere Änderungen, wie etwa Adoption oder Namensänderung.
You do not have your birth certificate, but you need it, for example, for a marriage or for another official act? Then you can apply for the issuance of a birth certificate.
If, as a taxable (legal) person, you receive foreign income from a state with which there is a double taxation agreement, a certificate of residence may be required for submission to a foreign tax authorities .
Have you lost your identity card? Then you need to report this. In addition, you must apply for a new identity card if you are over 16 years old and do not have any other valid passport document.