Today's blockchain and cryptocurrency headlines Bitcoin is down slightly at $6,629 Ethereum is up slightly at $135 and XRP is up 8% at 17 cents Top gainers in the last 24 hours: Holo up 20% Blockstack up 17% Aelf up 15% Boston based Coinmetrics, a blockchain data firm closed a $6 million dollar series A. Binance has officially announced the Binance card South Korea’s biggest bank is getting ready to launch a crypto custody service