Community Newsletter

Project Spotlight: Rethink Ledgers

When Bart Cant, Founder and Managing Partner of Rethink Ledgers, decided to join CCI, he started to develop a prototype application with the hope to build a solution that could help keep people safe and bring back some normalcy in their daily lives.

The prototype app he built is called “State Surveillance System for Covid19 Testing and Vaccine Distribution Management”. The app was developed using the DAML (Digital Assets Modeling Language) smart contract language and W3C’s verifiable credentials. The app showcases a prototype solution that provides a digital, secure experience for citizens, health clinic providers, and state agencies to share COVID-19 test results, “proof of vaccine” administration, and other “immunity proofs” using a centralized ledger.

DAML guarantees privacy by coding the solution as rights and obligations. The information is stored, so it cannot be accessed unless the party accessing that data has been explicitly configured in the smart contracts to access it. DAML is also one of the few solutions that allows for interoperability and a wide variety of datastores including solutions built on blockchain (e.g., Hyperledger Fabric, Hyperledger Sawtooth), DLT (e.g., Corda), a centralized ledger (e.g., AWS QLDB) or a simple database (e.g., PostgreSQL).

The second major technical component of the solution is how it interacts with verifiable credentials. Verifiable credentials are used to securely transmit COVID-19 test information from the health clinics to the patient. The application provides a digital workflow for this experience (including a mobile experience) while still being HIPAA compliant and providing a safe and secure mechanism for sharing COVID-19 test data that allows the recipient to be in control of his or her data and decide on what to share and with whom.

For more information about this app, please read this blog or contact bart@rtledgers.com.

CCI Governance Framework v2 Draft Ready for Public Review

Straight from our Blog

CCI Workstream Updates

Use Case Implementation

We had our 17^th meeting on September 29, 2020. Two use case implementations were demonstrated to the group.

Chris Were (Verida) presented a decentralized personal-health-data solution that is being piloted in Singapore and North America. The system supports multiple test types including COVID-19 (PCR), cholesterol and others. The Verida datastore is available at an open-source GitHub library.

Freddy Zwanzger (Serostatus) presented the SeroStatus solution, which is built in Germany. It supports COVID-19 tests, immunity tests and vaccinations and stores all data in encrypted form only on a user’s phone. One of its identification methods is based on a photo.

For more information about the demos, please visit our meeting page. Our next meeting is scheduled for Tuesday, October 13, 16:00-17:00 CEST, with two demonstrations confirmed.

Rules & Governance 
(Please see the above section on "CCI Governance Framework v2 Draft Ready for Public Review")

Coordination & Communications

We hosted the September CCI all-hands call where we updated the community on our conversation with Linux Foundation Public Health and what would be CCI's near-term priorities. If you didn't make it to the call, you can find the recording, slides and chat history on CCI Internal Homepage.

While we continue to engage with Linux Foundation Public Health, we are also reaching out to and reconnecting with other organizations (e.g., W3C CCG, ID2020, etc.) to explore program and operational synergies. 

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