Today's blockchain and cryptocurrency news: Bitcoin is up half a percent at $5,723 XRP is down 1% at 29 cents and Ethereum is down 2.5% at $160 Top gainers in the last 24 hours: LBRY credits, up 18% Digix DAO, up 18% Particl, up 18% Microsoft is teaming up with JP Morgan— making JP Morgan’s Quorum available on Microsoft's Azure blockchain service. Belarus-based currency . com — a tokenized securities exchange — has announced that it is coming out of beta mode. Christian Catalini, the prominent MIT crypto economist is on leave from MIT and working at Facebook.