Serve as evidence of (6)
I believe the answer is:
attest
(Other definitions for attest that I've seen before include "Give sworn evidence" , "Provide proof of, declare to be true (6)" , "Verify" , "Bear witness, declare to be true" , "show?" .)
I believe the answer is:
attest
(Other definitions for attest that I've seen before include "Give sworn evidence" , "Provide proof of, declare to be true (6)" , "Verify" , "Bear witness, declare to be true" , "show?" .)