NY Real Prop L § 312 (2021)
2021 New York Laws RPP - Real Property Article 9 - Recording Instruments Affecting Real Property 312 - Contents of Certificate of Authentication.

§  312.  Contents  of  certificate  of  authentication.  1. An officer   authenticating a certificate of acknowledgment or proof must subjoin  or   attach to the original certificate a certificate under his hand.2. When the certificate of acknowledgment or proof is made by a notary   public,  without  the  state  but within the United States or within any   territory, possession, or dependency of the United States, or within any   place over which the United States, at the time when such acknowledgment   or proof is taken, has or exercises jurisdiction, sovereignty,  control,   or  a  protectorate,  the  certificate  of  authentication must state in   substance that, at the time when such original certificate  purports  to   have  been  made, the person whose name is subscribed to the certificate   was such officer as he is therein represented to be.In every other case the certificate of authentication  must  state  in   substance  (a) that, at the time when such original certificate purports   to have been made, the person whose name is subscribed to  the  original   certificate  was  such  officer  as he is therein represented to be; (b)   that the authenticating officer is acquainted with  the  handwriting  of   the  officer  making  the  original  certificate,  or  has  compared the   signature of such officer upon the original certificate with a  specimen   of his signature filed or deposited in the office of such authenticating   officer, or recorded, filed, or deposited, pursuant to law, in any other   place,  and  believes  the  signature  upon  the original certificate is   genuine; and (c), if the original certificate is required  to  be  under   seal, that the authenticating officer has compared the impression of the   seal  affixed  thereto  with  a  specimen  impression  thereof  filed or   deposited in his office, or recorded, filed, or deposited,  pursuant  to   law,  in  any  other place, and believes the impression of the seal upon   the original certificate is genuine.3. When such original certificate is made pursuant to subdivision five   of section two hundred ninety-nine of this chapter, such certificate  of   authentication  must  also  specify that the person making such original   certificate, at the time  when  it  purports  to  have  been  made,  was   authorized,  by  the laws of the state, District of Columbia, territory,   possession, dependency, or other place where the acknowledgment or proof   was made, to take the acknowledgment or proof of deeds  to  be  recorded   therein.4.  When  such  original  certificate  is made pursuant to subdivision   seven of section three hundred one of this chapter, such certificate  of   authentication  must  also  specify that the person making such original   certificate, at the time  when  it  purports  to  have  been  made,  was   authorized, by the laws of the country where the acknowledgment or proof   was  made,  to  take acknowledgments of conveyances of real estate or to   administer oaths in proof of the execution thereof.