China Warns Cryptocurrency Users: Blockchain Transactions Are Not Anonymous

China's Ministry of State Security (MSS) has issued a warning to cryptocurrency users that blockchain transactions are not as anonymous as they think. The MSS stated that blockchain records are permanent and transparent, allowing transactions to remain traceable on a public ledger.

The statement targets the misconception that using crypto instead of traditional banking severs the connection between transactions and personal identity. Wallet addresses may obscure this link temporarily, but once crypto interacts with the traditional financial system, it leaves behind digital traces that investigators can follow.

The MSS outlined four specific criminal use cases that have exploited this misconception: money laundering, ransomware payments, foreign intelligence funding, and custody risks at centralized exchanges (CEXs) and decentralized finance (DeFi) platforms.