FairData is world's first trustless data provider powered by Ethereum and Chainlink. It transparently records requests of data seekers on personal data of data owners. An example of such a request is a third party seeking personal data from you as a data owner for advertisment purposes. Unlike today's handling of personal data, FairData gives data owners the choice to say yes or no to requests on their personal data. If they say yes, they will be paid for sharing their personal data and data seekers benefit from an immutable and permanent FairData certificate, verifying their ethically correct obtainment of personal data. If data owners say no, no personal information is forwarded to the data seeker. As a result, FairData gives control back to the people while maintaining the supply of personal data for businesses processes like customer relations or advertisment.

• the feeling of being controlless over own personal data
• the desire to contribute to the vision of web 3.0
• having fun while challenging yourself

• got familiar with all services of Chainlink, especially Any API and External Adapters
• improved my Solidity skills around hybrid smart contracts
• extended my knowledge in use cases of Blockchain in general

• deployed and verified FairData contract on Goerli
• examplary central database storing personal data
• get personal data of user: "0xd04a70063a8383F1142737fFb8C53527907C88eC" from examplary central database

• address of deployed FairData contract on Goerli: 0x69c278183fdaa4068cbe69b8fbf290d9bd8d51a5

1. Clone repo
2. Run npm install in root and client folder respectively
3. Run npm run dev in root folder to get server and client running on localhost
4. Login with MetaMask into client (note: client is not yet connected to FairData Manager contract on Goerli)

• Solidity for the underlying smart contract of FairData: the FairData Manager (FDM) (click here for verified and public FDM on Goerli network)
• React.js for client of FDM (not yet connected to deployed FDM contract on Goerli)
• Ethers.js for web 3.0 functionality
• MongoDb Atlas for an examplary database storing personal data
• Express.js and Mongoose for the API of the examplary database (click here for public get endpoint)
• Node.js for the underlying server of the API and the client
• Heroku for launching and maintaining server
• Chainlink's Any API service for enabling the FDM contract
  • to transparently forward personal data stored off-chain in centralized storage
  • to transparently perform zero-knowledge proofs without forwarding personal data
  • to ulitmately be a trustless platform managing personal data

1. create MVP of FairData
   • solve all remaining TODOs of current Proof of Concept (e. g. solve problem of personal data being logged on public event logs)
   • generalise smart contract so that any central data keeper can sell personal data with consent of data owner
   • create an external adapter so that the fairData protocol firstly needs to authenticate before being able to send get reuqests
   • extend web app and connect it to final FairData Manager smart contract
2. create business plan of FairData
3. get funding to turn FairData into real product

All code as well as intellectual and business property belongs to Sid Lamichhane. Feel free to reach out for collaboration and feedback: [email protected].