DMM Bitcoin Co., the operator of a Japanese cryptocurrency exchange, said Friday that digital assets worth at least 48.2 billion yen ($300 million) have disappeared for an unknown reason.The Tokyo-based company under major IT firm DMM.com LLC said it detected the abnormality at around 1:26 p.m. the same day and suspended operations such as withdrawals of virtual currencies and the reviewing of applications for new accounts.The amount of lost cryptocurrency is believed to be the second-largest ever in Japan, exceeded only by the 58 billion yen stolen from the Coincheck exchange in Tokyo in a…READ FULL ARTICLE