Poloniex

Poloniex is one of the largest cryptocurrency exchanges in the world. The platform was founded in 2014 by Tristan D’Agosta. According to the documents, the company's previous office was in the United States, in Wilmington, Delaware, but now it is located in Boston, Massachusetts. Registration on Poloniex is similar to the same process on other sites that do not offer fast authorization through social networks. Like other online trading platforms, the new user must go through a two-step verification system. Passing only the first step limits withdrawals to $2,000 per day. After providing additional personal information, such as ID and home address, the withdrawal limit is increased to $25,000. To further increase the limit, the user must contact the exchange support service. Technical support is available by e-mail, feedback form on the website or via chat. The site offers two-factor authentication, as well as other exchanges.
Poloniex does not work with fiat currencies. The USD exchange rate is tied to Tether (USDT) altcoin, which costs exactly 1 dollar, but in times of crisis (for example, after closing the withdrawal of dollars on Bitfinex) its rate does not always correspond to the dollar. The exchange uses the standard model, which actively stimulates the liquidity of the market, each user can receive a lower commission for transactions. The higher the volume of transactions completed in one month, the lower the commission for all subsequent transactions. This model is especially important for the Poloniex exchange, since it supports more than one hundred cryptocurrencies, and all of them need to ensure large trading volumes.