Being caught for trading coins to buy and sell USDT, I received a detention notice from the local public security authority, stating charges of fraud or concealing a crime. Under such circumstances, what situations are considered not guilty?

Firstly, if the other party is a USDT dealer and your transaction has no other abnormal behaviors, it cannot be assumed that you had subjective knowledge of the situation, which means you are not guilty.

Secondly, if the other party is a victim who buys USDT from you and then transfers it to a scammer, this is considered a completed USDT transaction where the victim was scammed, which does not constitute a crime.

Thirdly, if the other party is a victim who buys USDT and directly transfers it to a scammer, this still requires an assessment of whether the transaction had any abnormalities. If there are no abnormalities, it does not constitute a crime.

Fourthly, if the other party's trading identity is a fleet, this also requires an assessment of whether the trading behavior was abnormal. The determination of abnormal trading behavior is based on judicial interpretations of concealed crimes and assisting crimes, mainly looking at whether the transaction price is the market price, whether there has been any prior investigation by public security authorities, whether the bank account has been frozen, whether there has been due diligence, whether encrypted chat software was used, how you know the trading partner, the time of entering the virtual currency industry, etc., to comprehensively assess whether there is subjective knowledge.