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Dcoin exchange is the digital asset trading platform supporting multiple chains. It was launched in 2018. Dcoin covers USDT, BTC, ETH and ETF markets.
Founded in 2011, Paymium describes itself as the first Bitcoin exchange in Europe. It is registered in France as a SAS company and operates as a Bitcoin trading platform. 
Antares Exchange is a platform that makes it easy to work with cryptocurrencies: a secure wallet for storage and an exchange for trading.