verb
authenticate
aw-THEN-tih-kayt/ɔːˈθentɪkeɪt/
Confirm that someone or something is genuine.
A currency specialist authenticates a banknote with a UV detector.

Etymology
The adjective meaning “genuine” becomes a verb meaning to render something authentic or establish its credibility. In the selected sense, authentication proves genuineness rather than creating it.
In context
different labs developed testing to authenticate the honey and detect if there is any fraudulent sugars in it.
More examples
- The museum hires an expert to authenticate the painting.
- The app authenticates users before granting access to their accounts.
- The collector refuses to buy the autograph until it is authenticated.
Forms
authenticate · authenticates · authenticated · authenticating
authentication noun — Confirmation that someone or something is genuine.
authentic adjective — Genuine rather than fake or copied.