U.Today Crypto Digest: Ripple Prime CEO Hints at Potential Upside for XRP, Legendary Trader Brandt Warns of Bitcoin 'Campaign Selling,' Vitalik Buterin Triggers Ethereum Sell-Off

Crypto news digest: Ripple Prime clients got access to XRP cross margin; Peter Brandt has dropped massive BTC warning; Vitalik Buterin might have caused ETH sell-off.