But Donna Conkling, a clerk in the suburb of Scarsdale, confirmed that the licence had been issued and received, and she added that the official conducting the ceremony had signed it.
The party was held at Jay-Z's apartment on 4 April, and Hollywood actress Gwyneth Paltrow and Destiny's Child stars Kelly Rowland and Michelle Williams, were among the reported guests.
Beyonce Knowles, 26, and Jay-Z, 38, have collaborated together on singles such as Deja Vu and Crazy In Love.
Jay-Z was president of hip-hop record label Def Jam until December of last year, and he is booked to headline the Glastonbury festival in June.
