Most people have heard of Bitcoin (BTC) “miners,” but just what do they do? In essence, miners work competitively to solve complex math problems in order to secure transactions on the network. See, one of the biggest risks to a blockchain is something called a “double-spend” attack. This is when someone spends the same money twice. This isn’t often a problem with traditional currencies, but with digital currencies, a system is needed to make sure someone can’t send the same Bitcoin to multiple parties.
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