N.Y. Civil Practice Law & Rules § 4540-a: Presumption of authenticity based on a party's production of material authored or otherwise created by the party

Rule 4540-a. Presumption of authenticity based on a party's production

of material authored or otherwise created by the party. Material

produced by a party in response to a demand pursuant to article

thirty-one of this chapter for material authored or otherwise created by

such party shall be presumed authentic when offered into evidence by an

adverse party. Such presumption may be rebutted by a preponderance of

evidence proving such material is not authentic, and shall not preclude

any other objection to admissibility.