China Extended Crypto Crackdown to Offshore Exchanges and Mining

Chinese authorities published two national cryptocurrency directives on September 24, 2021, extending the country’s enforcement framework across trading, overseas exchanges, payment services, internet access and mining.

The People’s Bank of China and nine other authorities classified specified virtual-currency business activities as illegal financial activities. Separately, the National Development and Reform Commission and ten other authorities directed officials to prevent new cryptocurrency-mining projects and arrange an orderly exit for existing operations.

The paired publications mattered because they joined financial enforcement to industrial, energy and internet controls. They also closed an important stated loophole by expressly addressing overseas exchanges that served mainland residents online.

Trading restrictions reached beyond domestic exchanges

The PBOC notice appeared on September 24 with a 17:00 publication timestamp, although the document itself was signed on September 15, 2021. That chronology matters: September 24 was the public disclosure date, not the date on its signature block.

The notice said Bitcoin, Ether and Tether lacked the legal status of sovereign currency and must not circulate as money. It classified activities including exchanges between fiat and virtual currency, exchanges between virtual currencies, acting as a central counterparty, providing brokerage or pricing services, token financing and virtual-currency derivatives trading as illegal financial activities that were prohibited.

Its cross-border provision was especially consequential for the industry. An overseas virtual-currency exchange providing internet services to residents inside China was also deemed to be conducting illegal financial activity. The document contemplated responsibility for exchange personnel inside China and for organizations or individuals knowingly providing marketing, payment, settlement or technical support.

Financial institutions and non-bank payment companies were told not to open accounts, transfer funds, clear payments, accept virtual currency as collateral or provide related insurance. Internet companies were instructed not to supply online business premises, promotion or paid traffic. Authorities were directed to strengthen transaction monitoring, information sharing and enforcement coordination.

The notice did not say that possession of cryptocurrency by itself was a criminal offense. It warned that participation in virtual-currency investment carried legal risk, that related civil acts violating public order and good customs could be invalid, and that losses could fall on participants. Describing the publication simply as a ban on owning Bitcoin would therefore exceed the text reviewed for this reconstruction.

Mining faced energy and financing controls

The NDRC mining directive was published on September 24 but signed on September 3, 2021. It called for strict control of new mining projects and an orderly withdrawal of existing projects.

The measures included treating mining as an industry slated for elimination, preventing projects from operating under the label of data centers, restricting electricity connections and energy use, and withholding fiscal or financial support. The accompanying NDRC explanation tied the policy to electricity demand, carbon emissions, equipment supply and financial-crime concerns.

This was a national implementation framework rather than proof that every mining machine in China stopped operating on September 24. The document required regional schedules, project inventories and follow-through, leaving the pace of actual shutdowns to subsequent enforcement.

Bitcoin’s reaction and the limits of the data

Reuters reported that Bitcoin dropped more than 9% before paring losses and was down 6.6% at $41,937 at approximately 12:00 p.m. Eastern Time on September 24. The instrument was Bitcoin priced in U.S. dollars, and the measurement window was an intraday move through that snapshot.

That observation has material limitations. The Reuters report did not identify a particular exchange, index provider, opening timestamp or reference price, so the percentage and dollar quotation are not independently reproducible from the article alone. Cryptocurrency traded continuously across multiple venues, and the report does not establish that the Chinese publications caused the entire move.

The defensible September 24 conclusion is narrower: China publicly joined a more explicit prohibition on virtual-currency business services with a national framework for suppressing mining, while global cryptocurrency prices reacted sharply during the same trading session.