Coinsfera is a cryptocurrency exchange that ensures the fast and secure trade of any cryptocurrencies in Istanbul. By allowing anyone to buy and sell more than 2000 cryptocurrencies with cash in seconds, Coinsfera becomes the leading OTC crypto exchange in Istanbul, Turkey. The professional staff which consists of 200 employees is working on delivering you the best services. You can buy Bitcoin in Istanbul with cash, Buy Tether in Istanbul, Buy Ethereum in Istanbul, Sell Bitcoin in Istanbul or buy any cryptocurrency in Istanbul with cash instantly. We take care of our customers.