Proof Market, a leader in digital verifiable credentials partnered with PathCheck and New Context to develop a paper first credential standard that can be used for proof of vaccination while maintaining much of the Privacy by Design principles of SSI and verifiable credentials.
Making offline vaccination credentials available to everyone is a critical component of health equity, especially for the most vulnerable populations of the world. What makes a vaccination patient journey so unique is that it starts with a vaccination coupon QR code that can be distributed to anyone, yet remains a private and unique identifier for that individual. The person can use the coupon to register for a vaccination, track their patient journey through two shots, concluding with a verifiable proof of vaccination that only the individual controls.
Feature story in the New York Times, "For Vaccine Passports, Less Tech is Best"
Full specification, demo videos, source code, and information for getting involved can be found at the PathCheck Paper Credentials web site.