The start of Bitcoin Cash trading on the Coinbase exchange was supposed to be a great opportunity to get into a major new cryptocurrency while its values weren't yet through the roof, but that's... not how it panned out. Coinbase froze transactions just a few hours after they began in order to investigate numerous accusations of insider trading. Observers noticed that the price of Bitcoin Cash rose sharply before news of its availability on the exchange broke, and that there was a sharp selloff virtually the moment trading started. From a cursory glance, it looked like someone knew about the Coinbase move in advance, triggered a flurry of trading that led to a spike in price, and took advantage of this for a massive windfall.
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