# Data Integrity, Security & Encryption The Base Registry provides secure data storage mechanisms that protect sensitive fields through encryption at rest. Individual columns in the registry database can be encrypted using pgcrypto, with encryption keys managed via a dedicated Key Management Service. This approach ensures a high level of confidentiality for personally identifiable information while keeping cryptographic operations transparent to the registry application. The platform ensures secure access to registry data through authenticated and authorized APIs. #### De-Duplication and Record Matching To prevent duplicate registry records, the platform includes a built-in deduplication engine. Whenever a new change request is created, the registry performs similarity matching against existing records using SQL trigram-based matching. Possible duplicates are flagged in the change request workflow, allowing verifiers and approvers to take informed decisions before approving the proposed change. Deduplication runs asynchronously, ensuring that user interaction remains responsive while still providing timely alerting. --- # 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://docs.openg2p.org/products/registry/registry/features/data-integrity-security-and-encryption.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.