Where's all this invisible money gonna come from? On 26 October 2013, a Hong-Kong based bitcoin trading platform owned by Global Bond Limited (GBL) vanished with 30 million yuan (US$5 million) from 500 investors.[204] Mt. Gox, the Japan-based exchange that in 2013 handled 70% of all worldwide bitcoin traffic, declared bankruptcy in February 2014, with bitcoins worth about $390 million missing, for unclear reasons. The CEO was eventually arrested and charged with embezzlement.[205] On 3 March 2014, Flexcoin announced it was closing its doors because of a hack attack that took place the day before.[206][207][208] In a statement that now occupies their homepage, they announced on 3 March 2014 that "As Flexcoin does not have the resources, assets, or otherwise to come back from this loss [the hack], we are closing our doors immediately."[209] Users can no longer log into the site. Chinese cryptocurrency exchange Bter lost $2.1 million in BTC in February 2015.[210] The Slo...