Bitcoins
SALT LAKE CITY, UT - APRIL 26: A pile of Bitcoins are shown here after Software engineer Mike Caldwell minted them in his shop on April 26, 2013 in Sandy, Utah. Bitcoin is an experimental digital currency used over the Internet that is gaining in popularity worldwide. (Photo by George Frey/Getty Images)
PARIS, FRANCE - NOVEMBER 30: In this photo illustration, a visual representation of the digital Cryptocurrency, Bitcoin in front of a Bitcoin chart is displayed on November 30, 2017 in Paris, France.The value of e-money has increased tenfold since the beginning of the year, and the price of Bitcoin has exceeded 10 000 US dollars. The value of Bitcoin rises and rises, but an investment risk remains. (Photo by Chesnot/Getty Images)
A bitcoin loco sits on the roof of a demonstration model of a shipping container industrial mining farm at the Bitferma promotional stand at the CrytoSpace conference in Moscow, Russia, on Friday, Dec. 8, 2017. CryptoSpace is Eastern Europe's largest conference dedicated to blockchain technology and cryptocurrencies and runs Dec. 8-9. Photographer: Andrey Rudakov/Bloomberg via Getty Images
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