# Data Privacy **Focus:** Confidentiality, selective disclosure, and control over data and its exposure. **Objective**: Enable data privacy across interconnected chains. Ensure that sensitive information is protected from unauthorized access, and users or entities have control over their data, in alignment with privacy regulations and standards. **Description:** Provides protocols, cryptography standards, and access controls to ensure confidential data exchange in cross-chain transactions and communications is protected according to privacy requirements. **Layer owner:** Developers, industry working groups. Some key aspects: * Zero-knowledge proofs and trusted execution * Encryption standards for data in transit and at rest * Interoperable permissioning schemes and access controls * Privacy-preserving smart contracts * Selective disclosure and data minimization * Hybrid public/private blockchain integrations * Anonymous communication channels * Compliance with regulations like GDPR * Audit trails for transparency over privacy controls Data privacy is fundamental to any commercial solution. transactional data privacy. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://qualitax.gitbook.io/interop/requirements/foundational-layer/security-sub-layer/data-privacy.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.