Grayscale touts Zcash mining as 2-4X more profitable than struggling BTC mining

Block-reward miners are pivoting from Bitcoin to Zcash, where the top mining rig now earns around four times more per megawatt-hour than the best Bitcoin machine, after ZEC’s rally pushed the privacy coin into the top 10 by market value. For miners who have seen their returns in mining dwindle over the past years, especially...