Cryptocurrency: So it’s more or less official: MtGox, once the world’s largest bitcoin exchange, has died and taken all its holdings with it to the grave. This follows a long string of evasive statements, silence, and strange behavior from the exchange, particularly including bad customer service. The net is full of horror stories of people having lost their money, and claims of a “hack against the vault” are not credible in the slightest – here’s why.