notarize

verb (used with object), no·ta·rized, no·ta·riz·ing.

1. to certify (a document, contract, etc.) or cause to become certified through a notary public.

verb

1. (tr) to attest to or authenticate (a document, contract, etc), as a notary

v.1935, from notary + -ize. Related: Notarized; notarizing.