Key points

  • China's Ministry of State Security said public blockchain records can support end-to-end tracing of cryptocurrency flows.
  • The ministry said exchange, payment, device and IP data can help connect wallet addresses to real-world identities.
  • The September 28 warning reinforces existing restrictions; it does not announce a new nationwide crypto rule or a specific enforcement case.

China's Ministry of State Security has warned that cryptocurrency users should not confuse pseudonymous wallet addresses with permanent anonymity. In a September 28 notice, the ministry said public blockchain records, exchange information and device data can allow authorities to reconstruct transaction paths and connect them to real people. The message reinforces China's existing hard line on private cryptocurrencies, but it does not introduce a new trading ban or disclose a fresh prosecution.

What the ministry said

The ministry's notice described the idea that crypto transfers are untraceable as a misconception. It pointed to the transparency and immutability of public ledgers, where transfers remain visible after confirmation. Investigators can combine those records with information collected when a wallet interacts with a centralized exchange, payment service or other regulated gateway. Device identifiers, internet-protocol records and account-registration details can narrow the gap between an onchain address and an individual, according to the notice.

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The statement linked virtual currencies to several categories of alleged crime, including money laundering, online gambling, telecom fraud, ransomware, cross-border smuggling and espionage-related payments. Those are general risk claims from the ministry, not findings against a named exchange, network or user. The notice did not publish case numbers, transaction hashes, seizure totals or court outcomes that would allow independent testing of any specific allegation.

A tracing warning, not a new rule

The practical significance lies in enforcement messaging rather than a change in legal status. China's February 2026 multi-agency notice already said Bitcoin, Ether, Tether and other virtual currencies do not have the same legal standing as fiat money in the country. It also treats specified domestic exchange, brokerage, token-offering and related services as illegal financial activity. Monday's state-security statement adds an investigative emphasis: blockchain activity can create evidence even when users avoid conventional bank transfers.

That distinction matters for businesses and individuals assessing the announcement. The ministry did not say that every privacy tool can be defeated, that every wallet can be attributed, or that possession alone proves wrongdoing. Public blockchains expose transaction histories, but attribution still depends on connecting addresses to outside records or operational mistakes. Privacy-focused protocols, self-custody and cross-chain activity can complicate tracing, while centralized services can provide additional identity and access data.

Who is affected

The warning is most relevant to people and intermediaries handling crypto flows connected to mainland China, particularly where transfers touch exchanges, payment platforms or accounts that collect identity data. Service providers outside China may also face requests or scrutiny when transactions have a domestic nexus, although the notice itself does not set out a new cross-border cooperation process. Users should therefore read it as a statement of enforcement capability and intent within an already restrictive policy framework.

The next material evidence would be a named investigation, court filing or regulatory action showing how authorities apply the tracing methods described. Until then, the announcement establishes the ministry's position but not the outcome of any particular case. It also leaves a familiar technical reality intact: blockchain addresses can be pseudonymous, yet transaction graphs and offchain records may still reveal who controls them.

Sources

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