Chinese police technical paper rarely details the entire process of cryptocurrency tracking and freezing.

BlockBeats News, July 2 - Chinese police published a detailed technical report in the journal Criminal Science and Technology, unusually revealing the complete forensic toolchain for tracing, freezing, and seizing cryptocurrencies. The technical report, co-authored by Sun Shengbin of the Wenzhou Public Security Bureau and Lou Yandi of the Criminal Investigation Corps of the Zhejiang Provincial Public Security Department, systematically outlines the operational procedures for evidence collection, transaction tracing, and asset seizure, offering the clearest glimpse into law enforcement technology to date.

The report shows that investigators can lock onto assets by scanning private keys, seed phrases, screenshots, and chat records from phones, computers, and hardware wallets. If keys are not directly obtained, they can conduct tracing by combining blockchain transaction records, cross-chain transfer paths, mixer fund flows, and real-name information from trading platforms. For confirmed involved assets, police can transfer private keys into controlled wallets or coordinate with trading platforms to freeze accounts. The report also emphasizes that private key custody must be separated from case handling, and complete oversight records must be maintained.