We are looking for a Cohen to Duchen for Yom Tov. I found a college student (not frum) who says he is a Cohen. May I allow him to Duchen; what research must I do to validate that he is indeed a Cohen?
You can rely on his word regarding giving him an Aliyah and Birchas Kohanim. Sources: עפ"י הרמא אבהע"ז סי' ג סעי' א וראה בב"ש ס"ק ב שאע"פ שהוא…




