CNBC: Branson-backed cryptocurrency start-up launches a super-fast exchange to t ake on Coinbase. [1]https://www.cnbc.com/2019/07/30/bitcoin-blockchain-launches-crypto-exchange-t o-take-on-coinbase.html References 1. https://www.cnbc.com/2019/07/30/bitcoin-blockchain-launches-crypto-exchange-to-take-on-coinbase.html