I see some user says thats scam, okex is Not a scam-i had a few problems similar to the guys above but it’s more to do with communication than anything else-that are very hot on security. OKEX is a cryptocurrency trading platform specializing in BTC and LTC futures. You can trade on the margin with up to 10 or 20x leverage, or hedge to lock in your mining profits. The exchange is available on iOS, Android, Mac OS X, and Windows.See full review