 eBay, one of the worlds most dynamic marketplaces, is partnering with PROVA Group and founder Emmitt Smith to officially offer its witnessed authentication services to the marketplaces 182 million global shoppers. Starting today, sellers can use PROVA Groups services to verify their items as legitimate, and buyers can rest assured they are getting exactly what they pay for. To further demonstrate the authenticity and legitimacy of PROVA Groups SmarTagTM technology, the partners are hosting an exclusive auction event at ebay.comEmmitt22, now through 7pm PT on August 5, featuring a breadth of verified sports cards and memorabilia from Smiths own personal collection. 