TechFlow news, July 2, according to reports from the "South China Morning Post", Sun Shengbin of the Wenzhou Public Security Bureau, Lou Yandi of the Criminal Investigation Corps of the Zhejiang Provincial Public Security Department, and others published a technical paper on June 4 in the journal "Forensic Science and Technology", systematically disclosing the processes of evidence collection, tracking, seizure, and freezing involved in cryptocurrency cases.
The report shows that case handlers can lock assets by scanning information such as private keys, mnemonic phrases, screenshots, and chat records in mobile phones, computers, and hardware wallets; if keys are not directly obtained, tracking can be carried out combining blockchain transaction records, cross-chain transfer paths, coin mixing fund flows, and real-name information from exchanges. For confirmed assets involved in the case, police can transfer them to controlled wallets by replacing private keys, or coordinate with exchanges to implement account freezing. The report also emphasizes that private key custody must be separated from case handling, and complete supervision records must be retained.
