A relatively small cryptocurrency exchange has halted deposit and withdrawal services after its CEO has reportedly gone missing. The IDAX exchange posted an announcement earlier today saying it had halted some operations after its staff were unable to make contact with the global CEO. The CEO is said to have taken access to the company’s cold wallets with them. At this point, it’s not known why the CEO has supposedly vanished. According to CoinMarketCap, IDAX serviced some $500 million worth of Bitcoin trades over the past 24 hours — compared to top ranking exchange BitMEX, which serviced over $2 billion.…

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