Troubled Bitcoin exchange Mt. Gox says that it located nearly a quarter of the around $485 million worth of missing bitcoins that its been searching for since shutting down its site and filing for bankruptcy protection late last month. Mt. Gox, once Bitcoins top exchange, previously chalked much of the currencys disappearance up to hackings over the course of several years, leading to some obvious questions about its accounting practices and how this could have gone unnoticed until recently. The reasons for their disappearance … is still under investigation. Mt. Gox says that it now holds approximately 202,000 bitcoins, with 650,000 still missing.