registration certificate; registration card
An official document or card proving that something or someone is registered. Common in administrative and legal contexts.
新しい住所の登録証を市役所で受け取った。
I received my new address registration certificate at the city hall.
この登録証がないと、施設を利用でき
The city office issued a registration certificate to the new resident.
You cannot use the facility without this registration card.
Please present your registration certificate at the entrance.
The registration certificate's validity expires next month.
証明書 is a general term for any certifying document, while 登録証 specifically certifies that something has been registered.
counter for thin, flat objects; sheet; plate; coin · serving of soba; portion of gyōza · sumo rank position; wrestler at a given rank · field; rice paddy plot · palanquin bearer
Compound of 登録 (registration) + 証 (certificate, proof).