The forwarded post says Project Aurum Phase 2, developed with the HKMA, explores whether digital cash can protect users’ privacy while still supporting compliance and fraud controls. The BIS page describes a prototype using privacy-enhancing technologies and configurable compliance functions, aiming for a balance between anonymity and full transaction transparency. The supplied BIS summary does not specifically name zero-knowledge proofs or anti-money-laundering rules, so those details are claims in the forwarded post rather than confirmed by that summary. BIS project page