China's Top Prosecutors Propose Treating Coin Mixers and Privacy Coins as Evidence of Money Laundering

China's Supreme People's Procuratorate, the state body that directs criminal prosecutions, published proposals that would make it easier to bring cryptocurrency money-laundering cases, including by treating the use of mixers and privacy coins as evidence of criminal intent. The draft guidance, circulated in mid-July, identifies mixers, privacy coins and decentralized exchanges as the primary obstacles to tracing illicit funds.

The core principle is a presumption of guilt. Under the proposals, if a suspect uses a coin mixer, transacts in privacy coins or sells assets at prices far from the market rate without a "reasonable counter-explanation," that behavior alone could support an inference of laundering. Prosecutors would also treat on-chain records and blockchain-analytics reports as admissible evidence. The authors urged building a national platform to hold and sell seized cryptocurrency, a way to work around China's own ban on trading it.

This is a significant turn in the debate over financial privacy. For years, developers have argued that transaction confidentiality is a neutral feature that does not by itself indicate wrongdoing. The Chinese proposal reverses that argument for the purpose of prosecution. The act of seeking privacy becomes a fact the state can weigh against the user. It arrives just as privacy-focused developers in the West, including the teams behind Aztec and Miden, are trying to reposition confidential execution as a mainstream requirement rather than a tool for evasion.

The measure is a proposal, not yet enacted law, and it would apply within China's jurisdiction. But because Beijing also proposed cross-border judicial cooperation to trace and freeze assets moved abroad, its evidentiary standard could influence how privacy tools are treated well beyond its own courts.