N.J. Stat. § 2A:13-10
The county clerk of any county in which any such attorney-at-law shall have filed his autographed signature and certificate, as provided in section 1 of this act, shall, upon request, subjoin to any certificate of proof, acknowledgment or affidavit signed by the attorney, a certificate under the clerk's hand and seal stating that the attorney-at-law was at the time of taking such proof, acknowledgment or affidavit duly commissioned and sworn and residing in this State, and was as such an officer of this State duly authorized to take and certify said proof, acknowledgment or affidavit as well as to take and certify the proof or acknowledgment of deeds for the conveyance of lands, tenements or hereditaments and other instruments in writing to be recorded in this State; that said proof, acknowledgment or affidavit is duly executed and taken according to the laws of this State; that full faith and credit are and ought to be given to the official acts of the attorney-at-law, and that the county clerk is well acquainted with the handwriting of the attorney-at-law and believes the signature to the instrument to which the certificate is attached is his genuine signature.
N.J.S. § 2A:13-10