Disruptor 50: No. 31 Coinbase By: CNBC.com News May 12, 2015 at 07:00 AM EDT To date, Coinbase-the closest thing to a bitcoin central bank-has created 2.7 million consumer wallets and signed up 39,000 merchants. Read More >> Related Stocks: Banco Bilbao Viscaya Argentaria S.A. ADR Goldman Sachs Group