Yet even with a plethora of risks and the volatility, a handful of virtual currencies continue to stand out thanks to their proprietary blockchain technology -- the digital, distributed, and decentralized ledger that's responsible for logging all transactions. While guessing the next move in virtual currencies has proved to be more of a crapshoot than Wall Street typically prefers, the following three cryptocurrencies may have a genuine shot at doubling from their current market caps.

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