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.
Alterdice is a Centralized cryptocurrency exchange based in Singapore. The exchange was launched in 2018. Its reported volume is about 40 mln. $. It supports 96 Trading Pairs and 36 Coins.
Exrates is a crypto exchange that was founded in 2016 which makes it an older crypto exchange. There is not much information about the founders but the site reveals that it is registered in Estonia under a company named DexTechnologies OU.