thanks for the data. I don't like the sound of USDT. Maybe I should deal with another exchange such as Poloniex. I would want to be able to sell my Bitcoin and end up with US dollars in the transaction. Is there any exchange that would transact to US dollars?
Poloniex also only have BTC-USDT pair and same for bitfinex. I think kraken and coinbase are the only option left for you to sell your bitcoin for USD and transfer them to your bank account. You should check their withdrawal option page and find out whether they support withdrawal of USD to your country's bank or not.