Poloniex is one of the oldest exchanges in the blockchain world. It was launched in 2014 and in 2017 held the biggest volume of ETH among all the exchanges. Headquarters are based in the United States and the exchange is fully legalized to work in the U.S. as well as in the European Union. There are more than 100 cryptocurrencies available for trading on the platform. Commissions for Makers and Takers are different and depends on the 30-day average trading amount.