N.Y. C.P.L.R. 4538

Rule 4538. Acknowledged, proved or certified writing; conveyance of\nreal property without the state. Certification of the acknowledgment or\nproof of a writing, except a will, in the manner prescribed by law for\ntaking and certifying the acknowledgment or proof of a conveyance of\nreal property within the state is prima facie evidence that it was\nexecuted by the person who purported to do so. A conveyance of real\nproperty, situated within another state, territory or jurisdiction of\nthe United States, which has been duly authenticated, according to the\nlaws of that state, territory or jurisdiction, so as to be read in\nevidence in the courts thereof, is admissible in evidence in the state.\n