Coinbase is a leading digital currency platform and wallet where sellers and buyers can transact with new types of digital currencies such as Bitcoin, Ethereum, Litecoin, and Bitcoin Cash. The exchange was founded by Brian Armstrong and Fred Ehrsam in 2012 and is based in San Francisco, California. They focus on the US market, however, the company currently operates in 31 countries and offers storage of bitcoins in 190 countries around the world.
Changelly Pro is an extended version of the popular cryptocurrency trading platform Changelly. Unlike the original platform which is rather an aggregator of side cryptocurrency exchanges, Changelly Pro is a full-fledged exchange.