authentication

US /ɑːˌθen.t̬əˈkeɪ.ʃən/
UK /ɑːˌθen.t̬əˈkeɪ.ʃən/
1.

công nhận

the process or action of proving or showing something to be true, genuine, or valid.

:
the prints will be stamped with his seal and accompanied by a letter of authentication