I sold some USDT on OKEx for 350,000 RMB. On the day of the sale, the card stopped working, and the receiving bank card was urgently frozen by my uncle in a different location for 48 hours. After inquiring at the bank, I was informed that it was frozen by an authorized agency. The bank provided a phone number, and I contacted them, providing my ID and bank card number. The representative said it was frozen for 48 hours and still under urgent payment halt. I could wait for 48 hours, and if the card still didn't work afterward, I should contact them. As a result, when the 48 hours were up, it showed that it was judicially frozen. I then contacted the freezing unit in the other location, and they told me to bring the necessary materials and go in to give a statement. If you also have a frozen card from selling USDT.

The first step is to provide materials to give a statement, to eliminate any suspicion of involvement in the case in the eyes of the freezing unit in the other location. You have not participated in fraud or money laundering; you are just an individual, not a USDT seller, so there is almost no criminal risk, and it remains simply a matter of a frozen card. The second step is to determine the level of the involved card and the amount involved. Level one cards, in addition to being unfrozen, also need to issue a statement confirming no involvement in the case.

A level one card means the amount involved is the same as the amount received, while a level two card is based on a certain ratio, which could also be 100%. The third step is to ask the representative how to unfreeze it. In most regions, you still need to return the funds to get it unfrozen; if you don't return the funds, they won’t unfreeze it for you. The fourth step is that if the negotiated ratio isn't satisfactory, the representative clearly states that they will deduct the amount. You can appeal to a higher level of the public security bureau or the same level of the people's procuratorate.