It’s the year of the cryptocurrency. Bitcoin’s value has soared—at one point, to $3,000, well past the price of an ounce of gold. Equally as surprising, several new cryptocurrencies, such as Ethereum and Zcash, jumped into the spotlight, bringing the total worth of all cryptocoins to over $100 billion.
But the long-term outlook on cryptocurrencies has gotten blurrier. After years of Bitcoin's dominance, squabbles among its core developers and lack of progress, together with rising transaction fees made it less attractive as both a payment system and a long-term store investment...
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