You searched through countless U merchant advertisements and finally chose a seemingly decent U merchant for the transaction.

The U merchant transferred to your account via Alipay, WeChat, or bank card, and you confirmed the transaction was completed, with 1 million USDT arriving in the U merchant's account.

In this process, the exchange acts as a guarantor, temporarily locking your USDT until the merchant completes the payment. You confirm the information, and the exchange releases the coins; there should be no issues throughout the process. The only potential problem is...

There is black money in the 1 million that the merchant gave you!

This is an unavoidable link in your withdrawal process; how can you confirm that the merchant's funds are not problematic?

Days of accumulation? Promise to compensate for frozen cards? The reputation of established cryptocurrency merchants?

Which one... tell me which is useful?

It's useless; countless frozen card cases show that this card freezing is a low-profile 'black swan' event. When the funds will explode is entirely dependent on when the victim reports the case. I have a friend whose frozen card case lasted the longest—two years before being frozen!

Make it clear, it was frozen two years later!

He was confused himself and was preparing to find the transaction order to appeal when the exchange had already refunded, leaving him with no information to check!

The fundamental reason for card freezing is:

1. You don't know whether the money transferred by the U merchant has any issues.

2. Even if there are no issues this time, a few months later, funds may be traced and frozen due to previous involvement in a case.

3. Even if there are no issues, the other party may be marked as having frequent deposits and withdrawals by the bank's big data risk control, leading to the freezing of the cards related to the transaction.

4. Lastly, if your domestic card's funds are frequently deposited and withdrawn, which is inconsistent with your past identity; rapid entry and exit, without retention time, will also trigger the bank's risk control freeze.

Haha, it can be checked, but this belongs to on-chain technology, so let's not delve into it for now. This is not about the deposit and withdrawal information being checked by the uncle, but the bank card being monitored by the anti-fraud big data center...

The logic is as follows: gambling brothers often use USDT for transactions and then sell and buy coins on various exchange platforms. Due to the high frequency of transactions, their bank cards and those monitored by the anti-fraud center have interacted, which is detected by big data.

Most cryptocurrency merchants' bank cards are high-risk cards. If you interact with them for a long time, your bank card will also be tagged as 'fraud' in the big data system.