authentication
/ɔˌθɛn(t)ɪˈkeɪʃ(ə)n/
noun
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
noun
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
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