The verb verify has 4 senses (first 2 from tagged texts)
1. (7) verify -- (confirm the truth of; "Please verify that the doors are closed"; "verify a claim")
2. (2) control, verify -- (verify or regulate by conducting a parallel experiment or comparing with another standard, of scientific experiments; "Are you controlling for the temperature?")
3. verify -- (attach or append a legal verification to (a pleading or petition))
4. affirm, verify, assert, avow, aver, swan, swear -- (to declare or affirm solemnly and formally as true; "Before God I swear I am innocent")