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High-risk deposits trigger compliance reviews
Xu issued the warning after responding to a user whose transfer from a sports betting platform reportedly triggered an OKX risk review. The executive said funds sent from high-risk addresses can result in stricter checks, with the length of a review depending on the circumstances. Accounts confirmed to be connected to high-risk or illegal activity may have their services terminated, according to Xu.
Xu also warned about funds originating from escrow transactions conducted through Telegram groups, Huiwang, and related platforms. Such channels can create elevated source-of-funds risks, although a transfer from a flagged address alone does not prove that an account holder committed a crime. His statement did not identify the user, betting platform, deposited asset, or amount involved.
Reviews may restrict funds beyond 15 days
Xu said an OKX risk review may continue for 15 days or longer. During that period, the exchange may restrict access to funds and some account functions while its compliance team examines the transaction history. The statement did not establish 15 days as a fixed minimum or maximum. Xu said the duration would depend on the facts of each case, meaning reviews may conclude sooner or continue beyond that period.
Crypto exchanges use blockchain monitoring tools to assess whether deposited assets have interacted with addresses associated with scams, hacks, sanctions, darknet markets, or other flagged services. They may also request transaction records and evidence explaining how a customer obtained the assets. Blockchain screening works by tracing transaction paths and assigning risk labels to wallets. Those labels can help exchanges prioritize reviews, but they do not independently establish ownership, criminal intent, or legal liability.
Higher risk funding channels identified
Xu specifically cited Telegram escrow transactions and Huiwang variants as examples of channels that may expose users to elevated source-of-funds risks. Telegram itself is a messaging platform, but private groups can be used to arrange informal trades without the customer verification controls found on regulated exchanges. Escrow arrangements can also make a transfer harder to document. The address sending cryptocurrency to an OKX customer may belong to an intermediary rather than the original buyer or seller, creating gaps in the transaction record.
Xu used the name Huiwang, which is commonly associated with Huione, a Cambodia-based group operating payment and online marketplace services. The U.S. Treasury's Financial Crimes Enforcement Network took action against Huione Group in October 2025. FinCEN's final rule identified the company as a foreign financial institution of primary money laundering concern and cut it off from the U.S. financial system. FinCEN said Huione Group laundered at least $4 billion in illicit proceeds between August 2021 and January 2025, attributing at least $37 million to North Korean cyber heists and $36 million to virtual currency investment scams.
Previous U.S. enforcement shapes compliance approach
OKX's warning comes after the exchange faced a major U.S. enforcement case over its earlier compliance controls. In February 2025, its operating company pleaded guilty to operating an unlicensed money transmitting business in the United States. The company agreed to pay more than $500 million in penalties and forfeiture. U.S. prosecutors said OKX had served American customers despite formally restricting the market and had failed to maintain an adequate anti-money laundering program for part of the relevant period.
The enforcement action helps explain the exchange's stricter approach to customer screening. U.S.-registered crypto businesses must maintain compliance programs, retain transaction records, file required reports, and screen customers against sanctions and criminal risk indicators. Users receiving assets from betting sites, private markets, or informal trading groups may face requests to document where the funds originated. Complete records do not guarantee that an exchange will release funds, but they can help compliance teams evaluate a transaction. Xu advised customers not to use OKX accounts for money laundering, fraud, illegal fund transfers, or other unlawful conduct.
