cryptoboy8888

A cryptocurrency (or crypto currency) is a medium of exchange using cryptography to secure the transactions and to control the creation of additional units of the currency.

Cryptocurrencies are a subset of alternative currencies, or specifically of digital currencies.

There were more than 710 cryptocurrencies available for trade in online markets as of 11 July 2016, but only 9 of them had market capitalizations over $10 million.
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