Mining Ethereum (ETH) was at its hardest in March 2021, as network difficulty reached an all-time high of nearly 6,000 terahash. … Average mining difficulty of Ethereum from July 2015 to January 9, 2021 (in terahash) CharacteristicMining difficulty in TH–• Ethereum mining difficulty 2014-2021 | Statista www.statista.com › … › Financial Instruments & Investments