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Since the arrival of Bitcoin in 2009, cryptocurrencies have proliferated. Currently, over 700 cryptocurrencies are actively traded, with a total market capitalization of more than $13.2 billion (as of October 27, 2016), according to Coinmarketcap.com.1 Most of these are minor currencies with a small circulation. But the top 10 or so cryptocurrencies by market capitalization are a different...

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