When it comes to buying and selling USDT, many people are most concerned about trust and fund security, especially the issue of bank cards being frozen after the release of USDT. Based on some frozen card cases, several common misconceptions need special attention: Misconception 1: OTC on exchanges is necessarily safe Many people believe that as long as buyers are matched within the exchange platform, there will be no problems. But in reality, even buyers matched by the platform cannot 100% confirm the safety of their funding sources. OTC trading on platforms is usually more secure than pure over-the-counter trading, but it does not mean that there is no risk of card freezing. Misconception 2: Cash remittance will not freeze the card Some buyers may say, 'If I use cash to transfer money to the bank, there will definitely be no problem with the funds.'. But if the cash itself comes from fraudulent funds and is only withdrawn and then remitted to you, banks and judicial authorities may still investigate the funding chain, and your bank card may also be frozen as a result. Misconception 3: Having a guarantor means absolute safety In off exchange transactions, guarantors can help confirm the payment of one hand and the payment of one hand, reducing the risk of transaction fraud. But the guarantor cannot prove that the buyer's source of funds is legal. That is to say, guarantee can only solve the problem of delivery, but cannot completely solve the problem of fund security. So, when it comes to U, what we really need to pay attention to is not just whether the other party will make the payment, but where the money comes from. Suggestion for everyone: 1. Try to verify the true identities of the contact person and the payer as much as possible 2. Clarify the relationship between the payer and the buyer to avoid third-party payment 3. Try to avoid large off exchange transactions with unfamiliar netizens as much as possible 4. Prioritize trading with people you know and can trace in real life 5. Keep complete chat records, transfer records, and transaction screenshots, and do not leave the group or delete records at will Freezing a bank card does not necessarily mean it is illegal, nor does it necessarily mean that trading USDT will freeze the card. But risks do exist, especially in situations where the source of funds is unclear, third-party payments are made on behalf of others, and strangers engage in over-the-counter transactions. Before leaving U, do more verification, keep evidence during transactions, and only when encountering problems will you have the opportunity to explain the situation and protect your legitimate rights and interests.