1️⃣ Check the contract address.
Tether uses many protocols, such as Ethereum blockchain - ERC20 token, Tron - TRC20 token, and others. And each of them has its own separate Contract address, which must always match the real one.
More details: tether.to/en/supported-protocols
2️⃣ To correctly receive, store and send usdt, you must have native coins on your balance.
Native coins are the parent coins of the network, for example you use the ERC20 network to transfer USDT, then you need to have an ETH token to pay the network fee.
3️⃣ If you receive USDT NOT from a large exchange, but from a "private wallet", then you need to check the addresses of the sender, whether funds from previously blocked addresses have not been received in the chain.
Tether freezes addresses at the request of regulatory authorities, to prevent criminal activity, etc. Therefore, in order not to receive a "black" tether, check the sender's address.
Request in advance the address from which the funds will come, throw it into TronScan, as an example of TRC20, and do a little analysis of large incoming transactions. Do they not have a direct connection with "frozen" addresses.
