An Ethereum ($ETH) based exchange backed by Bahrain's Central Bank, SprinkleXchange, is set to list its first company in June, with the planned addition of 35 more firms over the following 12 months. Touting its high liquidity and low cost, the exchange believes it can list around 1,000 firms in the next 3-4 years as it targets companies with $20-$200 million market caps.