Cardea provides an easily verifiable, trustworthy, unalterable proof of health tests or vaccination that can be shared in a privacy-preserving way. Cardea was accepted to LFPH on April 29, 2021. Visit Project Website Recent Cardea news See all news Open Source Cardea Project Expands into Employee and Student Health Verification September 29, 2022 Public-private partnerships in health: The journey ahead for open source July 29, 2022 Sharing Health Data while Preserving Privacy: The Cardea Project June 21, 2022