verification

noun5

1. •
   The act or process of verifying.
2. •
   The state of being verified.
3. •
   Confirmation; authentication.

   • The detective needs verification of your whereabouts last night.
4. •
   The operation of testing the equation of a problem, to see whether it truly expresses the conditions of the problem.
5. •
   A formal phrase used in concluding a plea, to denote confirmation by evidence.