⛓️ BlockChain Monorepo

A collection of enterprise-level blockchain projects built using modern Web3 technologies, smart contracts, decentralized authentication, and secure transaction systems.

This monorepo contains multiple blockchain-based applications including crypto wallets, land registration systems, banking systems, and decentralized voting platforms.

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🚀 Projects Included

1️⃣ Crypto Wallet App

A decentralized crypto wallet application with blockchain integration, wallet management, transaction handling, and secure authentication.

Features

• Crypto wallet integration
• Send & receive transactions
• Secure authentication
• Blockchain transaction history
• Smart contract interaction
• Responsive enterprise UI

Tech Stack

• React.js
• Node.js
• Express.js
• Hardhat
• Ethereum
• Solidity

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2️⃣ LandChain

A blockchain-powered land registration and property verification system designed to prevent fraud and provide transparent ownership tracking.

Features

• Land ownership verification
• Immutable blockchain records
• Smart contract-based transfers
• Fraud prevention
• Property history tracking
• Government-style dashboard

Tech Stack

• React + Vite
• Node.js
• Express.js
• MongoDB
• Solidity
• Ethereum

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3️⃣ MetaBank

A decentralized blockchain banking platform with secure digital banking features and Web3 authentication.

Features

• Digital banking dashboard
• Wallet integration
• Blockchain-based transactions
• Secure login system
• Account management
• Smart contract support

Tech Stack

• React.js
• Node.js
• MongoDB
• Solidity
• Ethereum

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4️⃣ VoteChain

A secure blockchain-based E-Voting system designed for transparent and tamper-proof elections.

Features

• Secure blockchain voting
• Immutable voting records
• Fraud prevention
• Voter authentication
• Election analytics
• Real-time result system

Tech Stack

• React.js
• Node.js
• Express.js
• MongoDB
• Solidity
• Ethereum

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📁 Repository Structure

Root/
│
├── crypto-wallet-app/
│   ├── client/
│   └── server/
│
├── LandChain/
│   ├── client/
│   ├── blockchain/
│   └── server/
│
├── MetaBank/
│
└── VoteChain/

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⚙️ Prerequisites

Before running the projects, install:

• Node.js (v16+ recommended)
• npm or yarn
• Git

Optional:

• MetaMask Wallet
• Hardhat
• Ganache

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🔧 Installation

Clone Repository

git clone https://github.com/sriinathh/BlockChain.git
cd BlockChain

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▶️ Running Projects

Crypto Wallet App

cd crypto-wallet-app/client
npm install
npm run dev

Backend:

cd ../server
npm install
npm start

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LandChain

cd LandChain/client
npm install
npm run dev

Backend & Blockchain:

cd ../server
npm install
npm start

cd ../blockchain
npm install

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MetaBank

cd MetaBank
npm install
npm run dev

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VoteChain

cd VoteChain
npm install
npm run dev

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🔐 Environment Variables

Create .env files inside projects.

Example:

PORT=3000
MONGO_URI=your_mongodb_uri
RPC_URL=your_blockchain_rpc
JWT_SECRET=your_secret_key

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🌐 Blockchain Features

• Smart Contracts
• Decentralized Authentication
• Wallet Integration
• Ethereum Transactions
• Secure Data Storage
• Immutable Records
• Fraud Prevention
• Web3 Connectivity

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🛡️ Security

• JWT Authentication
• Blockchain Verification
• Secure Wallet Transactions
• Protected APIs
• Smart Contract Validation

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📦 Common Commands

Install dependencies:

npm install

Run development server:

npm run dev

Run backend:

npm start

Run tests:

npm test

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🔥 Future Improvements

• AI Integration
• NFT Support
• DAO Governance
• Multi-chain Support
• Web3 Authentication
• Advanced Analytics
• Mobile Applications

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👨‍💻 Author

Srinath

Blockchain Developer | Full Stack Developer | Web3 Enthusiast

GitHub: https://github.com/sriinathh

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⭐ Support

If you like these projects, give this repository a ⭐ on GitHub.

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