OKCoin is a Chinese-based exchange that was founded in 2013 and is currently one of the most dominant players on the Bitcoin trading scene. It is a digital trading platform which provides spot trading of digital currencies and fiat currencies to customers worldwide. The company is structured similarly to Coinbase and GDAX, where you have one of the brands focused on the needs of basic customers and the other on more serious traders. The trading oriented segment of OKCoin is also known as OKEX.