FairData

FairData is world's first trustless data provider powered by Chainlink. It gives people the choice to say yes or no to any request on their personal data. If they say yes, they get ETH as reward.

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About FairData

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 back control to every day people about their personal data, while maintaining the supply of data for businesses.

What inspired me to do FairData?

  • 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

What I learned building the proof of concept for FairData?

  • 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

How I built the proof of concept for FairData?

  • 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

What's next for FairData?

  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

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