Today's blockchain and cryptocurrency headlines Bitcoin is up 2.5% at $11,532 Ethereum is up 2% at $353 and XRP is up 7% at 26 cents Top gainers in the last 24 hours: Melon Protocol up 15% Putin has signed a bill that will prohibit the use of cryptocurrencies as a means of payment in Russia. 17-year old charged in Twitter hack. Longfin Corp to pay 223 million to investors over the company's 2017 IPO.