Noah Webster's Dictionary (n.) The act of attesting; testimony; witness; a solemn or official declaration, verbal or written, in support of a fact; evidence. The truth appears from the attestation of witnesses, or of the proper officer. The subscription of a name to a writing as a witness, is an attestation.

Multi-Version Concordance Attestation (1 Occurrence) Ruth 4:7 Now this was the custom in former time in Israel concerning redeeming and concerning exchanging, to confirm all things: a man took off his shoe, and gave it to his neighbor; and this was the manner of attestation in Israel. (WEB JPS ASV DBY NAS)