AgriVerify

LIVE WEBSITE : https://agri-verify-lake.vercel.app

The demo video for the given website explaining all the features and the functionalities is : DEMO VIDEO

This is a decentralized website that helps farmers to easily certify their produced crops and generate QR codes that consumers can scan for instant verification. A NFT is minted for every generated QR-code to ensure authenticity. For every process as the farmers add their name to adding their crops, notifications are sent containing the important info using the Push Protocol. In short, this project implements a FarmManagement smart contract for managing farmers and crops as NFTs.

Here the project initially contains two parts - Hardhat and Agriproject

1. Hardhat requires ethers version atleast 6.0 version or higher
2. PushProtocol requires ethers version 5.7.2

So we have put two folders for the same reason to avoid version mismatch

Hardhat

• FarmManagement.sol: Main smart contract
• FarmManagement.js (Ignition): Deployment module
• FarmManagement.js (Test): Contract tests
• hardhat.config.js: Hardhat configuration

On running the

npx hardhat test

Functions in the solidity contract

• addFarmer(string memory _name): Add a new farmer
• addCrop(uint _farmerId, string memory _cropName, uint _quantity, string memory _ipfsHash): Add a crop and mint NFT
• getCrop(uint _farmerId, uint _cropId): Get crop details
• ownerOfCropNFT(uint _farmerId, uint _cropId): Check crop NFT owner
• We have used @openzeppelin/contracts (@4.9.3) to import necessary contracts to integrate NFT into our project

NFT Integration

Each crop is represented as an ERC721 NFT, allowing for unique identification and potential trading.

IPFS Integration

IPFS hashes can be stored with each crop for off-chain data storage.

Agriproject

Web3 Integration

• The application uses Web3.js to interact with the Ethereum blockchain.
• A smart contract is deployed at the address: 0xEe4F162B6b261Bc6260D70b2785431B3e44136B1 on the Sepolia testnet through HardHat.

Push Protocol

• Utilizes the Push Protocol for sending notifications.
• Channel address (in CAIP format): eip155:11155111:0x210406844A1B98EF2729398c4BF9700238fF0a76
• Notifications are sent when:
  1. A new farmer is added
  2. A new crop is added

IPFS Integration

• Uses Pinata for pinning metadata to IPFS
• Generates and uploads metadata for each crop entry, including QR code data

Features

1. Farmer Management

   • Add new farmers to the blockchain
   • View farmer details

2. Crop Management

   • Add new crops for registered farmers
   • Generate unique QR code for a dynamic route which redirects to authentication page for the crops added
   • Mint NFTs for crop entries

3. Dashboard

   • View all registered farmers
   • Search functionality to find specific farmers
   • Display crop details for each farmer
   • Radio button to filter out all farmers created by you
   • Complete transperency of blockchain

4. Blockchain Integration

   • Interaction with a smart contract deployed on the Sepolia testnet
   • Use Web3.js for blockchain interactions

5. Push Protocol Integration

   • Send notifications for new farmer registrations and crop additions
   • Subscribe users to the notification channel

6. QR Code Generation

   • Create unique QR codes for dynamic route created with every crop added
   • QR codes link to a verification page with crop details

Functions used

i) Farmer Management

• addFarmer(): Registers a new farmer on the blockchain
• fetchFarmerDetails(): Retrieves farmer information from the blockchain

ii) Crop Management

• addCrop(): Adds a new crop for a farmer and mints an NFT
• generateNFTMetadata(): Creates metadata for the crop NFT
• generateQRCode(): Generates a QR code for each crop entry

iii) Notification System

• sendNotificationForFarmerAdded(): Sends a notification when a new farmer is registered
• sendNotificationForCropAdded(): Sends a notification when a new crop is added

iv) IPFS

• pinJSONToIPFS(): Uploads metadata to IPFS using Pinata