ZKsync and Phylax have launched "Bank Stack," a new on-chain financial architecture designed for institutional use, leveraging the security of Ethereum. The architecture integrates Prividium as a private execution layer and Phylax for deterministic risk controls, enabling the issuance of tokenized deposits, stablecoins, and Real-World Assets (RWA) with total privacy through Zero-Knowledge (ZK) proofs. This innovative system addresses structural issues like fragmentation and high compliance costs faced by traditional financial entities. By connecting with Prividium, banks can conduct confidential transactions while maintaining global market interoperability. The architecture includes a native identity and compliance layer, embedding KYC/AML regulations into asset logic, thus transforming compliance into an architectural feature and facilitating real-time auditing. The Bank Stack represents a shift towards a shared, programmable financial system, allowing for instant settlement and robust risk management, positioning ZKsync and Phylax as pioneers in building the future financial infrastructure on Ethereum.