LandChain — Blockchain-Based Land Registry System

💡 Overview

LandChain is an Ethereum-powered decentralized application designed to modernize and secure land record management. It eliminates manual errors and forgery risks by leveraging smart contracts, allowing governments and owners to register and verify property ownership in a tamper-proof, transparent, and verifiable manner.

🔗 Key Features

• On-Chain Land Registration:
  Admins can register land properties directly on the Ethereum blockchain using smart contracts. Ownership records are immutable and secure.

• Owner Payment Enforcement:
  Owners must submit Ether payments upon land registration confirmation, locking the record and ensuring contractual fairness.

• Ownership Transfer:
  Registered landowners can securely transfer ownership on-chain with transaction-proof records.

• Off-Chain Metadata Storage:
  Land metadata (emails, owner names, coordinates) is stored in MongoDB for efficient UI rendering and reporting.

• Automated Email Notifications:
  Nodemailer integration sends ownership confirmation emails with transaction hashes and details.

⚙️ Tech Stack

• 🧑‍💻 Smart Contract: Solidity

• 🌐 Frontend: React + TypeScript + ethers.js

• 💾 Backend: Node.js, Express.js

• 🗄️ Database: MongoDB

• 📩 Email Service: Nodemailer

• 💸 Wallet Integration: MetaMask / WalletConnect

🚀 How It Works

1. Admin Registration:
   An Admin wallet assigns a new property to an owner using registerLand().

2. Owner Payment:
   The Owner pays the property valuation using payForLand() via smart contract.

3. Ownership Verification & Transfer:
   All land records are publicly queryable. Owners can transfer property on-chain via transferOwnership().

4. Off-Chain Confirmation:
   Once confirmed on-chain, metadata is saved in MongoDB and an automated email is dispatched.

🌍 Impact

• Eliminates forgery and disputes in rural and urban land records.

• Allows banks and buyers to instantly verify ownership.

• Provides immutable, timestamped proof for legal and financial processes.

• Transparent and accessible to citizens, government, and auditors.

✅ LandChain —
Building trust, transparency, and security into land ownership.
From paperwork to proof, on-chain.