Universal Verifier SDK for QRCode-based Verifiable Credentials

SDK to verify all Verifiable QR codes out there.

Supported Platforms

• CRED: PathCheck's PaperCreds
• DIVOC: COWIN's Credentials in India
• HC1: Europe's Digital Covid Certificates by the eHealth Network
• SHC: SmartHealth Cards
• JXT: A BBS+ W3C Verifiable Credentials minimized with JSON-XT
• CBLD: A CBOR-LD version of W3C Verifiable Credentials.
• VDS: ICAO's Visible Digital Seals
• Excelsior: NYC's COVID pass

Install

npm install @pathcheck/universal-verifier-sdk --save

Usage

Import the library

const { verifyQRCode } = require('@pathcheck/universal-verifier-sdk');

Read a Verifiable QR

const qr = 'CRED:STATUS:2:GBCQEIIAWXECNVIUJQXPDV44EW3UHJIGNBGK4ITZAKX37MJNXG6IQZDXS7ZAEIB3ROQ2EWIRYH66FGPJOWBWP3MK6YTYVGJE332CXM6V2YQOBLHECU:1A9.PCF.PW:1//JD82'

Check if it's valid and get the unpacked version of the QR with:

const result = await verifyQRCode(qr);

Result will be on the format of the package type before signature depending on the QR format. Package types include:

• Array of elements
• JSON Web Token
• CBOR Web Token
• JSON-LD documents

Development

npm install

Test

npm test

Contributing

Issues and pull requests are very welcome! :)