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Cryptocurrency can take companies into previously untapped developing regions. Of course, it also can simplify commerce right here at home.

The defendants allegedly claimed they could turn the equivalent of around $100 into $80,000 in a month. In reality, most victims weren't even able to recoup their initial investment.

Early Bitcoin buyers have become millionaires, but investing in Bitcoin and its ilk today could put you at risk of being sucked into a pyramid scheme, Oliver warns.

Rather than jump on the bandwagon, you need to understand what blockchain can and can't do.