US regulation is proposing to add new required data elements for exchange (USCDI United States Core Data for interoperability). One of the data elements being proposed in exposing author information. This has posed interesting challenges for representing this data in an interoperable manner, and what author data elements mean in the context of healthcare. Argonaut is focusing on defining profiles for provenance on how to expose authors and custodians. The presentation would be to discuss the decisions being made, solicit feedback, and to discuss some of the difficult conversations occurring.