Contributed to the ocsf-schema repository by delivering Email BCC support, enhancing privacy-conscious recipient handling within the email object. The work involved designing and implementing new 'bcc' and 'bcc_mailboxes' attributes, ensuring alignment with existing 'cc' and 'to' fields for a consistent data model. Leveraging skills in API design, JSON schema, and backend development, the developer updated both the schema and documentation to facilitate maintainability and ease of onboarding for future contributors. These schema enhancements enabled privacy-preserving distribution to hidden recipients and improved downstream analytics by providing richer recipient data, all while maintaining robust validation and data consistency standards.