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Verifiable Credentials with Solid and Blockchain

A proposed system for Verifiable Credentials using Solid and Blockchain technology.

  • Solid for data storing, management and identity verification.
  • Ethereum (as used Blockchain tech) for storing the data integrity of a credential.

This project was created by Wannes Dieltiens under project guidance of Christophe Cop for Konsolidate during an internship.

Blogpost about the project.

MIT license in LICENSE.md

Any questions? Feel free to contact me at wannesdieltiens@gmail.com or on LinkedIn

Demo

Issuer App repo

User App repo

Validator App repo

Metamask plugin or a similar wallet provider with an ethereum account and Solid data-pods are required for testing out the applications.

Do not try to test this without any experience with Ethereum. Ethereums Rinkeby test-network was used to build and test this project.

Its recommended to run all 3 applications simultanously ( localhost:3000/3001/3002 ) Solid-pod used as issuer also has to manually give permission to user-app ( localhost:3001 ) Solid-pod used as user also has to manually give permisson to validator-app ( localhost:3002 )

Tech-stack

Project is bootstrapped with React.

  • external tech used : Metamask, Solid data-pod
  • libraries used : "@alch/alchemy-web3": "^1.1.1", "@inrupt/solid-client": "^1.10.0", "@inrupt/solid-ui-react": "^2.3.1", "@testing-library/jest-dom": "^5.14.1", "@testing-library/react": "^11.2.7", "@testing-library/user-event": "^12.8.3", "etherscan-api": "^10.0.5", "merkletreejs": "^0.2.21", "react": "^17.0.2", "react-dom": "^17.0.2", "react-scripts": "4.0.3", "sass": "^1.37.5", "web-vitals": "^1.1.2", "web3": "^1.3.6"

Known Bugs

  • Extract, show and use data for validation process from actual certif and not userWebId + certif .ttl name
  • Make validator only see/access certifs that they should.
  • User-app , make quelist auto delete item when stored
  • Make apps also request and write app-access to the next app in the order (issuer needs to give perm to user-app, user needs to give perm to validation-app)
  • Issuer stored a new thing in public eth address file for every certification created, should only by done once except if issuer uses a different eth address at some point
To-do
  • re-use more css and js code
  • Upgrade the current styling (currently bare minimum)
  • fix first letter capital/not of components, its kinda scrambled
  • Rename css parts and their class name for more generalisation and consistency
  • Delete unused code , except if it would hold any value in the development process or good alternative ways
  • Alter and add more comments
  • Have consistent and correct name usage (ex. issuer, holder, verifier)