attest
Pronunciation:
/əˈtɛst/verb
Definitions
To affirm to be correct, true, or genuine.
Example: When will the appraiser attest the date of the painting?
To certify by signature or oath.
Example: You must attest your will in order for it to be valid.
To certify in an official capacity.
To supply or be evidence of.
Example: Her fine work attested her ability.