verifier

noun

ver·​i·​fi·​er -ˌfī(ə)r 

-īə

plural -s

1

: one that searches for or discovers verification

2

: one that serves as verification

the problem of verifying beliefs … where the verifier lies beyond experience

—J. W. Yolton

3

: a machine used to check the correctness of the previous recording of data (as by punching cards or magnetizing tape)

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