Today's cryptocurrency and blockchain news Bitcoin is down 1.5% at $7,960 XRP is down 2% at .37 cents and Ethereum is down 2% at $248 Top gainers in the last 24 hours: Counterparty up 63% Aeron up 28% Storm up 17% Binance has confirmed that margin trading is on the way. A Tass report has suggested that Russia is considering a gold-backed cryptocurrency. The SEC has sued a california resident on charges of selling unregistered securities, and conducting a ponzi scheme disguised as a cryptocurrency. A potentially malicious vulnerability has been flagged on walletgenerator . net.