authenticate

verbs

establish the authenticity of something

authenticate

is derived from

authentication

is derived from

authentication

is derived from

authenticator

entails

confirm the truth of

"Please verify that the doors are closed"; "verify a claim"

verify

is a type of (narrower)

provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes

"His high fever attested to his illness"; "The buildings in Rome manifest a high level of architectural sophistication"; "This decision demonstrates his sense of fairness"

attest, certify, demonstrate, evidence, manifest