ProofChain

About The Project

Proofchain is a document verficationa and certficate issuance platform, allowing users to selectively disclose their identity to third party verifiers without exposing any extra Personally Identifiable Information

• Digital certificates and Digital copies of documents issued by authorized institutions are structured as Merkle Trees where only the root is stored on-chain. This allows users to provide cryptographic proofs for individual fields that verifiers can validate against the Ethereum ledger.
• The public ECDH keys of institutions and requestors are stored on blockchain
• The digital certificates and documents are encrypted using ECDH for key exchange and AES-256 for encryption and stored off-chain on mongodb, ensuring only the requestor and issuing institution can view the document
• Third-party verifiers can recompute the Merkle tree from shared fields and confirm authenticity by comparing the result against the issuer’s on-chain root, verifying specific data points without accessing unrevealed fields.

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Built With

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Development

Prerequisites

1. Ganache

   npm install ganache --global

2. Wails

   go install github.com/wailsapp/wails/v2/cmd/wails@latest

3. ProofChain-store

   git clone https://github.com/Raaffs/ProofChain-Store.git

4. Clone Repository

   git clone https://github.com/Raaffs/ProofChain.git

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Set Up

1. Set up Enviroment variables in .env file

   cd ProofChain
   PRIVATE_KEY=YOUR_PRIVATE_KEY
   

2. Set up config

   cp .config.example.json .config.json

3. Deploy Contract

   go test -v ./test -run TestDeploy

4. Add contract address to .config.json

   .config.json
   ...
       "services": {
        "STORAGE": "localhost:8754",      
        "CONTRACT_ADDR": "CONTRACT_ADDR" , #edit this
        "RPC_PROVIDERS_URLS": {
    ...

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Set Up storage service

1. Go to the directory where you install ProofChain-Store
2. Set up .env

   MONGO_URI=your_mongo_url
   MONGO_DB=ProofChain
   MONGO_COLLECTION_DOCUMENTS=Documents
   MONGO_COLLECTION_INSTITUTES=institute
   # Application Secret Key to access secure routes and perform sensitive operations
   SECRET_KEY=secret

3. Install dependencies

   go mod download

4. Run the storage service

   go run .

Storage service should be up on port 8754

Note: If you are running storage service on some other port, make sure to edit .config.json in proofchain to that specific port

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Build & Run the app

Make sure you've ganache & storage service up and running

wails build

./build/bin/ProofChain

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UML

1. Uploading Documents

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2. Issue certificate or create digital copy

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3. Third Party Verification

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Contributing

If you have a suggestion that would make this better, please fork the repo and create a pull request. You can also simply open an issue with the tag "enhancement". Don't forget to give the project a star! Thanks again!

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Contact

Suyash - suyashsaraf5@gmail.com

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Thank You!