Mining for cryptocurrencies like bitcoin, ether, and dogecoin isn’t as lucrative as it used to be. Here’s a look at how to do it and why small-time miners are being driven out of business. Bitcoin topped $58,000 in February for the first time. Ether, the world’s second-biggest cryptocurrency, has also hit record highs this year. Even dogecoin — a cryptocurrency invented as a joke that does not have the same serious function and institutional backing as bitcoin […]

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