certify by seal and signature(The engineer shall certify by seal and signature that he has measured or has supervised the measurement of all dimensions shown on the ... Alexander Demidov)
notarize(The United States does not legally certify translators, unlike many other countries. If a client requires certification of the translation of a diploma, the translator will get it notarized, certifying that the translator believes the translation to be full and accurate. Any charges for notarization are to be borne by the client. (с) Susan Welsh4uzhoj)