China Warns Crypto Users That Blockchain Transactions Can Be Traced

China’s Ministry of State Security has warned that cryptocurrency transactions do not provide criminals with a legal shield, arguing that blockchain records can help authorities trace funds and identify users.

The ministry made the comments in a public statement on Sept. 28, highlighting what it described as the risks of treating virtual currencies as anonymous payment tools. It said criminals may use crypto in money laundering, cyberattacks and other illegal activities, but stressed that transactions still leave digital records.

Blockchain Trails Remain Visible

The ministry said crypto addresses can create a degree of separation between wallet activity and a person’s real identity. However, it argued that this does not amount to genuine anonymity.

According to the statement, blockchain networks preserve transaction histories on public ledgers. Investigators can analyze those records and combine them with other data to reconstruct the movement of funds.

The ministry also pointed to crypto exchanges and payment interfaces. It said conversions between virtual currencies and fiat currencies can generate additional information, including device and internet-related records.

China Tightens Crypto Restrictions

The warning comes after Chinese authorities reinforced their restrictive approach to virtual currencies earlier this year. In February, several government departments reiterated that Bitcoin, Ether and Tether do not have the legal status of fiat currency in China.

Authorities also said virtual-currency-related business activities conducted domestically constitute illegal financial activities. The measures extended the regulatory focus to areas including stablecoins and real-world asset tokenization.

The Ministry of State Security also warned about the risks surrounding private-key custody. Individuals who lose or disclose private keys may permanently lose control of their assets, while relying on platforms introduces separate counterparty risks.

The latest statement reinforces a broader message from Chinese authorities: using cryptocurrency does not automatically erase financial trails or remove legal exposure. For blockchain investigators, the transparency and permanence of transaction data can instead provide evidence for tracing how digital assets move between wallets and services.