Bittrex exchange is based in Seattle and Lichtenstein all in USA region that makes them to comply to America law, to assure all users security and rest of mind Bittres always carry out KYC for all its customers so once your account is approved you don't have anything to worry about,and this alone should give any users confidence and assurance that one can not have when using most of the crypto exchanges. Bittrex listed so many cryptocurrencies which give users room to select from many popular and profitable coins, beside Bittrex would not just list any coin for listing sake but quality coin that investors can have rest of mind with,this they ensured through their methods of getting a coin listed.