N.Y. Real Prop. Acts. Law § 310

§ 310. Authentication of acknowledgments and proofs made within the\nstate. 1. When a certificate of acknowledgment or proof is made, within\nthis state, by a commissioner of deeds, a justice of the peace, town\ncouncilman, village police justice, or a judge of any court of inferior\nlocal jurisdiction, such certificate does not entitle the conveyance so\nacknowledged or proved to be read in evidence or recorded in any county\nof this state except a county in which the officer making such\ncertificate is authorized to act at the time of making the same, unless\nsuch certificate is authenticated by a certificate of the clerk of such\ncounty; provided, however, that all certificates of acknowlledgment or\nproof, made by a commissioner of deeds of the city of New York residing\nin any part therein, shall be authenticated by the clerk of any county\nwithin said city, in whose office such commissioner of deeds shall have\nfiled a certificate under the hand and seal of the city clerk of said\ncity, showing the appointment and term of office of such commissioner;\nand no other certificates shall be required from any other officer to\nentitle such conveyance to be read in evidence or recorded in any county\nof this state.\n 2. Except as provided in this section, no certificate of\nauthentication shall be required to entitle a conveyance to be read in\nevidence or recorded in this state when acknowledged or proved before\nany officer designated in section two hundred ninety-eight of this\narticle to take such acknowledgment or proof, nor shall such\nauthentication be required for recording in the office of the city\nregister of the city of New York of such acknowledgment or proof by a\ncommissioner of deeds of the city of New York.\n