UK Crypto Sanctions Spark Controversy Among Onchain Investigators

The recent UK crypto sanctions have sparked controversy in the industry, particularly among onchain investigators who rely on blockchain data to track illicit activity.

ZachXBT, a well-known investigator, has criticized the UK's action against Huobi Global S.A. and HTX, arguing that it has made risk labels less useful due to address tainting.

Address tainting occurs when a large centralized exchange is treated as sanctions-linked, causing every wallet with exposure to that exchange to carry automated risk flags across compliance tools, tracing platforms, swap services, and exchange monitoring systems.

ZachXBT claims that this has created a practical problem for investigators, who are struggling to separate serious illicit flows from normal retail activity.

The investigator argues that HTX is different from other exchanges targeted by sanctions in the past, as it has a large base of Asia retail users and Justin Sun remains a controversial figure in the market.

Compliance tools struggle with timing and exposure, blurring the line between pre-sanctions and post-sanctions activity. This has led to risk categories becoming harder to use, causing analysts to start ignoring the category altogether when tracing cases by exposure.

The fallout from the sanctions has also affected users who moved funds through HTX before the sanctions action, as well as those who received coins after someone else used HTX.