verification
noun
[ ˌvɛrɪfɪˈkeɪʃ(ə)n ]
• the process of establishing the truth, accuracy, or validity of something.
• "the verification of official documents"
Similar:
confirmation,
substantiation,
corroboration,
attestation,
affirmation,
validation,
authentication,
endorsement,
accreditation,
ratification,
establishment,
certification,
evidence,
proof,
support,
witness,
testament,
documentation,
Origin:
early 16th century: from Old French or from medieval Latin verificatio(n- ), from the verb verificare (see verify).