This project implements a blockchain system in JavaScript, providing a decentralized and tamper-resistant ledger for recording transactions. It includes features such as block creation, mining, validation, and peer-to-peer communication.
- Block Creation: Creation of blocks containing transactional data.
- Genesis Block: Initial block serving as the starting point of the blockchain.
- Block Mining: Addition of new blocks to the blockchain through a mining process.
- Blockchain Validation: Validation of the blockchain to ensure data integrity.
- Longest Chain Rule: Consensus mechanism where nodes follow the longest chain rule.
- Nonce: Adjustment of a nonce value to meet a difficulty target for mining.
- Dynamic Difficulty: Adjustment of the blockchain's difficulty target to regulate mining rate.
- Node Creation: Creation of nodes to participate in the blockchain network.
- Transaction Writing: Writing of transactional data onto the blockchain.
- Block Distribution: Distribution of blocks across the network for synchronization.
- Peer Creation: Establishment of peer connections for blockchain communication.
- Blockchain Syncing: Synchronization of blockchains between nodes to maintain consistency.
- Clone the repository:
git clone https://github.com/yourusername/blockchain-project.git
- Install dependencies:
cd blockchain-project
npm install
To access the blockchain data, send a GET request to the following endpoint:
GET /api/blocks
This will retrieve the current state of the blockchain.
To mine new blocks and add them to the blockchain, send a POST request with the desired data to the following endpoint:
POST /api/mine
This will initiate the mining process and add the new block to the blockchain.
To start a node and join the blockchain network, run the following command:
npm start
This will start the node and expose endpoints for interacting with the blockchain.
To run the node as a peer, allowing for peer-to-peer communication and blockchain synchronization, use the following command:
npm run dev-peer
This command starts the node in peer mode, enabling communication with other nodes in the network.
hextoBinary: Converts hexadecimal strings to binary format.express: Web framework for creating RESTful APIs.body-parser: Middleware for parsing request bodies in Express.nodemon: Development tool for automatically restarting the server.redis: In-memory data store for implementing pub/sub functionality.corss-env: Environment variable utility for cross-platform compatibility.request: Simplifies making HTTP requests for blockchain communication.