overiti

1. (of a document, signature) to certify; to notarize
   Moram da overim potpis kod notara. — I need to get my signature notarized.
   Overili smo kopiju diplome u opštini. — We had a copy of the diploma certified at the municipal office.
2. (of a card, semester) to renew; to get stamped
   Moram da overim zdravstvenu knjižicu. — I need to get my health card renewed.
   Knjižica mi je overena do kraja godine. — My health card is valid until the end of the year.
3. (of a ticket) to validate; to punch
   Ne zaboravi da overiš kartu u autobusu. — Don't forget to validate your ticket on the bus.

The imperfective is overavati; documents are usually certified kod notara or u opštini.