Interoperability Proving Ground (IPG) submissions within the ONC Tech Lab are submitted by healthcare, technology and development organizations that are invested in Health IT and Interoperability and want to share, learn and collaborate with similar stakeholders in the US, and around the world.

To view all submissions, please view the IPG link located within the ONC Techlab.

Using Digital Certificates to Scale FHIR Trust Networks

This project leverages trusted digital certificates to help scale the use of FHIR through reusable individual-, organizational-, or app-level credentials that can be leveraged to improve confidence in FHIR-based exchange. 

Join the UDAP Google Group here:!forum/udap-discuss

or contact for more information or if you would like to explore use of these credentials in a FHIR client application, FHIR server, or Identity Service, or to cross-test trusted endpoints as a UDAP collaborator. 

The client app registration and authentication/authorization use cases enabled through the use of UDAP profiles are regularly tested at HL7 FHIR connectathons; see this recent track description for more information:

See the last 15 minutes of this ONC HEART webinar for more information about the project, and some screen shots of UDAP profiles in action:
Start Date
Projected End Date

Project Tags
  • Digital Certificates
  • FHIR
  • HIT Vendor
  • Interoperability
  • Open API
  • PKI
  • Trusted Exchange Framework
  • UDAP
Project Point of Contact:
Project Results