BlockBeats News, July 2nd. Chinese authorities published a detailed technical report in the Journal of Forensic Science and Technology, rare public disclosure of the complete forensic toolchain for tracking, seizing, and freezing cryptocurrency. The technical report, co-authored by Sun Shengbin from the Wenzhou Public Security Bureau and Lou Yandi from the Criminal Investigation Detachment of the Zhejiang Provincial Public Security Department, systematically elaborated on the operational processes of evidence collection, transaction tracing, and asset seizure, providing the clearest glimpse of law enforcement technology to date.

The report indicates that investigators can use information such as private keys, mnemonics, screenshots, and chat records found on mobile phones, computers, and hardware wallets to pinpoint assets. If the private key is not directly obtained, they can combine blockchain transaction records, cross-chain transfer paths, coin mixing fund flows, and real-name information from exchanges for tracking. For identified assets involved in a case, authorities can transfer them to a controlled wallet by changing the private key or coordinate with exchanges to freeze the accounts. The report also emphasizes that the custody of private keys must be separate from case handling and that comprehensive supervisory records must be kept.