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Smart Health Card QR code for Covid-19 vaccine records
DIGITAL RECORD: Vaccine data is checked by scanning a QR code with a Smart Health Card reader

California has released the code for both the front end and middle tier of its Digital Covid-19 Vaccine Record[1] into the public domain to enable other US states to deploy their own digital vaccination record systems more quickly.

The US state’s digital record system allows residents to access a digital copy of their Covid-19 vaccination record via their Android or iOS device and uses the interoperable Smart Health Card[2] framework so that the data held on the record can be checked and verified by scanning a QR code with a Smart Health Card reader.

“California’s Digital Vaccine Record is an implementation of the Smart Health Card framework, also built on an open-source framework,” California Department of Technology says[3].

“The code we’re releasing today is everything we built to provide a front-end form that lets California residents submit a request for their digital vaccine record, and a middle tier that passes those queries to the back end (in our case, a Snowflake instance).

“If there’s a match, the middle tier returns a Smart Health Card-formatted QR code, along with the individual’s name and vaccination information.

“Every state in the United States operates their own immunization registry. If a state is interested in offering a service similar to what we launched in California, they can take our code, connect it to their own back end, and generate digital vaccine records for their residents.

“This won’t be plug-and-play exactly — it will still require some work to make the connection between the middle tier and the state’s back end — but we hope it will save states some time.”

To date, three other US states —

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currensceneFLOGO WHTsquareThough not the oldest form of currency, some form of shell money appears to have been found on almost every continent. The shell most widely used worldwide as currency was the shell of Cypraea moneta, the money cowry.

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