Question: "Is it possible for a coin dealer to receive illicit funds from normal transactions without refunding or unfreezing them?"

Of course, it is possible, but there is one key phrase: normal transactions. So, what constitutes a normal transaction? We must review the transaction process.

Here, normal must be absolutely normal, not just what you claim appears normal. Before discussing the underlying logic, let's clarify the concept of C2C (OTC): C2C trading on exchanges (like Taobao model) specifically refers to a peer-to-peer trading model between individuals.

In the virtual currency space, this can also be referred to as OTC trading (where the platform does not act as a central counterparty, and transactions are agreed upon between users), with buyers and sellers seeking trading partners in the market or matching randomly through the trading platform. After reaching a trading intention for a specific virtual currency, the parties will transfer payments based on their account information (using Alipay, WeChat, or bank transfer), and the seller delivers the target item after confirming receipt of payment.

The buyer pays the corresponding price to the seller via bank transfer, and upon receiving the funds, the seller transfers the virtual currency USDT to them.

The relationship between myself and the "buyer" is a sales contract relationship. The seller's receipt of the buyer's transfer funds is based on the seller delivering the corresponding equivalent value item, the USDT virtual currency, in good faith.

This is our usual point of contention: once the goods are delivered to you and you have given me the money, our sales contract relationship ends. What you do with the goods is unknown to us; whether you lost the goods or were scammed is not our concern, so claiming good faith acquisition can be justified.

Many sellers also prepare evidence, such as asking buyers to record a release video and signing contracts, which mitigates legal risks to some extent.

The key point is refunds and returns, and the contention is to ask the customer to return the USDT.