CertiChain

CertiChain is a decentralized platform for creating and managing offer letters using blockchain technology. The platform leverages Ethereum smart contracts to ensure the authenticity and integrity of the offer letters. CertiChain provides a seamless interface for employers to create offer letters and for candidates to verify them.

Deployment Link: https://certichain-gray.vercel.app/

Table of Contents

• Features
• Prerequisites
• Installation
• Running the Application
• Smart Contract Deployment
• Technologies Used

Features

• Decentralized Offer Letter Creation: Create immutable and tamper-proof offer letters stored on the Ethereum blockchain.
• Verification of Offer Letters: Verify the authenticity of offer letters using the offer hash.
• Unique URLs: Each offer letter is assigned a unique URL for easy reference.

Prerequisites

• Node.js and npm
• Ethereum wallet (e.g., MetaMask)
• Truffle (for smart contract deployment)
• Ganache (for local blockchain development)

Installation

Clone the Repository

git clone https://github.com/yourusername/CertiChain.git
cd CertiChain

Install Dependencies

npm install

Running the Application

Start the React Application

1. Create a .env file in the root of the project and add your contract address: plaintext

   REACT_APP_CONTRACT_ADDRESS=<Your_Contract_Address>

2. Start the development server:

   npm run start

The application will be available at http://localhost:3000.

Smart Contract Deployment

1. Ensure Truffle and Ganache are installed:

   npm install -g truffle ganache-cli

2. Start Ganache:

   ganache-cli

3. Compile and deploy the smart contract locally:

   truffle compile
   truffle migrate --reset

4. Copy the deployed contract address and update the .env file with this address.

5. Compile and deploy the smart contract on Avalanche Fuji C-Chain (using AVAX tokens):

   truffle compile
   truffle migrate --network fuji

Technologies Used

• React: Frontend framework for building user interfaces.
• Redux: State management for managing application state.
• Material-UI: UI library for React for building responsive and accessible components.
• Ethers.js: Library for interacting with the Ethereum blockchain.
• Solidity: Programming language for writing smart contracts.
• Truffle: Development environment and testing framework for Ethereum.
• Ganache: Personal blockchain for Ethereum development.
• Vercel: Hosting platform for deploying the application.
• Avalanche: Blockchain deployment on a global blockchain network

Brief About CertiChain

CertiChain is a blockchain-based platform designed to bring transparency and security to the process of issuing and verifying offer letters. By leveraging the immutability of blockchain technology, CertiChain ensures that offer letters cannot be tampered with, providing both employers and candidates with a secure and trustworthy solution for employment offers.

Main Features

• Secure and Immutable Offer Letters: Store offer letters on the blockchain to prevent any tampering or unauthorized modifications.
• Unique Identification: Each offer letter is assigned a unique ID and URL for easy access and verification.
• Verification Mechanism: Verify the authenticity of offer letters using cryptographic hashes.
• User-Friendly Interface: Simple and intuitive interface for creating and managing offer letters.

Screenshots

Home Page

Create Offer Letter

Get Offer Letter

Verify Offer Letter

License

This project is licensed under the Apache-2.0 License - see the LICENSE file for details.