Balancing privacy and transparency has always been a core challenge for blockchain implementation. Think about it—businesspeople would never lay their ledgers on the street for everyone to see, but if data is hidden too tightly, how can partners and regulators trust you?

How does traditional finance solve this? The bank vault is the answer—records of all transactions are kept, but ordinary people can't access them. Regulators, on the other hand, have permissions to review data but don't need to see every transaction detail. Early blockchain projects didn't think this through—they either made everything fully transparent like Bitcoin (all transaction information exposed) or extreme privacy (nothing visible).

Dusk's idea is different. To use an apt analogy, it’s like giving participants a safe with bulletproof glass. Your business secrets are securely locked inside, invisible to outsiders. But when proof is needed, you don't have to open the safe; instead, you can use specific cryptographic verification to convince others that there is indeed something inside—this is the core of "selective auditable privacy."

This scenario is easy to understand in practice. For example, an investment firm issuing private bonds—investors can see basic bond information and issuance terms, but sensitive data like holdings composition and specific transaction prices are only known to the trading parties. When auditors come to verify, they can confirm each transaction complies without knowing who bought what—privacy and compliance are both satisfied.

This kind of balance exists everywhere in reality. The question is whether blockchain can truly achieve this.