Coinone is a South Korea-based exchange platform to buy, sell and store Bitcoin, Ether and Ether Classic.
The market allows users to exchange these cryptocurrencies for South Korean Won (KRW) and offers margin trading services.
Every single transaction is traceable and irretrievably stored in the blockchain.
Your coins and deposits are available and tradable 24 hours a day, 7 days a week.
The registration is free, depending on the provider there are different fees for the trade.