confirmation

(n) additional proof that something that was believed (some fact or hypothesis or theory) is correct
- fossils provided further confirmation of the evolutionary theory
substantiation, verification, check,
(n) information that confirms or verifies
(n) making something valid by formally ratifying or confirming it
- the ratification of the treaty
- confirmation of the appointment
ratification,
(n) a ceremony held in the synagogue (usually at Pentecost) to admit as adult members of the Jewish community young men and women who have successfully completed a course of study in Judaism
(n) a sacrament admitting a baptized person to full participation in the church

substantiation verification check ratification

confirmative

confirmation hearing