“When Mitchell Demeter and Jackson Warren opened the world’s first bitcoin ATM at a coffee shop in Vancouver, it was an instant success. People actually lined up to use the machine, which processed about $1 million in digital currency transactions over its first month.
But one day in November, a few weeks after launching the ATM, Demeter noticed something peculiar as he perused the machine’s transaction data at his office, across town from the coffee shop. At one point, the machine had voided 15 transactions in a row, for no obvious reason. So he drove down to the cafe, and as he walked through the front door, he immediately saw the problem.”
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