Two Las Vegas casino hotels will become the first known U.S. commercial gambling houses to allow the use of the unregulated digital payment system, bitcoin, casino officials said on Tuesday. The co-owned Golden Gate Hotel and Casino and The D Las Vegas Casino Hotel will begin accepting bitcoins on Wednesday as payment for hotel rooms and related purchases, casino officials said in a statement. The D will also accept the virtual currency at its gift shop, the American Coney Island restaurant and Joe Vicaris Andiamo Italian Steakhouse. Downtown has really become a technology hub for all of Las Vegas, Derek Stevens, co-owner and chief operating officer for both casinos, told Reuters.