Bittrex

THE NEXT-GENERATION DIGITAL CURRENCY EXCHANGE

Built and operated in the United States, Bittrex is the next generation crypto trading platform created by security professionals. We are crypto-coin enthusiasts bringing more than 50 years of combined security and development experience to the trading community from companies, including Microsoft, Amazon, Qualys, and BlackBerry.

Bittrex is an exchange where you can trade your STEEM / SBD or Altcoin to Bitcoin. You can exchange between many different cryptocurrencies with other users of the service

Which means that you don't have full control over the coins deposited there and you shouldn't be using them to store your cryptocurrencies. Only use them if you want to do a trade between two coins and withdraw afterwards.

For Bittrex.com you can also check @bittrex.

GO NOW