ChainVerse2

ChainVerse2 is a decentralized blockchain network that demonstrates peer-to-peer communication and distributed ledger management. This project allows multiple nodes to communicate via WebSockets, mine blocks, and synchronize their chains, ensuring a secure and immutable blockchain.

Features

• Peer-to-Peer Communication: Nodes use WebSockets to exchange data, broadcast transactions, and synchronize chains.
• Proof of Work (PoW): Implements mining with cryptographic puzzles to add new blocks to the blockchain.
• Decentralized Transactions: Nodes can independently create and broadcast transactions, which are added to the blockchain through mining.
• Chain Validation: Each node independently validates the blockchain to ensure its integrity and security.
• Genesis Block: The initial block of the blockchain is created upon startup.

Technology Stack

• Node.js: JavaScript runtime for server-side scripting.
• Express.js: Web framework for handling HTTP requests.
• WebSocket: Protocol for real-time, bidirectional communication between nodes.
• Crypto: Provides cryptographic hashing (SHA-256) for block validation.

Getting Started

Prerequisites

• Node.js installed on your machine.

Installation

1. Clone the repository:

   git clone https://github.com/yourusername/multinode-blockchain.git
   cd multinode-blockchain

2. Install dependencies:

   npm install

Running the Application

1. Start a node (specify a port if needed):

   node app.js 3000

2. For each additional node, open a new terminal window and run:

   node app.js <port>

   The WebSocket server will automatically run on port + 1 (e.g., if you run on port 3000, the WebSocket server will use port 3001).

Testing the Blockchain

• Transactions are created and mined at each node.
• Nodes automatically sync their chains when a peer joins or broadcasts.
• Example transactions (Alice sending 50 to Bob, Bob sending 25 to Charlie) are pre-configured to demonstrate functionality.

API Endpoints

• GET /chain: Returns the current blockchain.
• POST /transaction: Adds a new transaction to the pending transactions (requires JSON body with sender, receiver, and amount).

Contributions

Contributions are welcome! To contribute, open an issue or submit a pull request.

License

This project is licensed under the MIT License. See the LICENSE file for details.