USD Tether is a Bitfinex issued ERC-20 token which is claimed to be backed by dollar at 1:1 ratio. There are controversial opinions about this and some say it's a scam.
Do you trust USDT or believe it might be a scam?
Usdt is mostly known for stable coin which is very helpful for the traders who are continuously do trade in different platforms. It is based on tron network and the transaction is almost free in all sites. So it is the most preferred stable coin to transfer funds.