The Ethereum Classic (ETC) blockchain is currently under a 51% attack.Coinbase says it has detected double spends that amount to 88,500 ETC, worth about $460,000. “On 1/5/2019, Coinbase detected a deep chain reorganization of the Ethereum Classic blockchain that included a double spend. In order to protect customer funds, we immediately paused movements of these funds on the ETC blockchain. Subsequent to this event, we detected 8 additional reorganizations that included double spends, totaling 88,500 ETC (~$460,000)”