Hardhat Lottery System using Blockchain, Chainlink VRF, and Keepers

Project Overview

This repository contains a Hardhat-based Lottery System that utilizes blockchain technology, Chainlink VRF, and Keepers.

• Hardhat is a development environment for building smart contracts on the Ethereum blockchain.
• Lottery System is a program that allows users to participate in a lottery by buying tickets.
• Blockchain technology is a decentralized digital ledger that allows for secure, transparent, and tamper-proof transactions.
• Chainlink VRF is a decentralized oracle that provides verifiable randomness.
• Keepers is a network of decentralized bots that perform tasks on the Ethereum blockchain.

The combination of these technologies ensures that the lottery system is fair, transparent, and secure. Hardhat provides a set of tools and features that make it easier to develop, test, and deploy smart contracts. Blockchain technology ensures that the process is transparent and tamper-proof. Chainlink VRF ensures that the selection of the winner is truly random and cannot be manipulated. Keepers can be used to automate tasks such as selecting a winner and distributing the prize.

Prerequisites

In order to run this lottery system, you will need the following:

• Node.js
• Yarn
• Git
• Hardhat
• Hardhat Network
• Solidity
• Chainlink VRF
• Keepers

Installation

To install this lottery system, follow these steps:

1. Clone the repository using git clone https://github.com/your-username/hardhat-lottery-system.git
2. Navigate to the directory using cd hardhat-lottery-system
3. Install the required packages using yarn install

Configuration

Before running the lottery system, you will need to configure the Chainlink VRF and Keepers.

Chainlink VRF

1. Create an account on Chainlink
2. Create a VRF job on Chainlink using the provided documentation
3. Copy the Job ID and Job Key and paste them in the hardhat.config.js file

Keepers

1. Create an account on Automation|Chainklink
2. Fund your account with KPR tokens
3. Create a job on KeeperDAO using the provided documentation
4. Copy the job ID and paste it in the hardhat.config.js file

Usage

To run the lottery system, follow these steps:

1. Start the Hardhat network using npx hardhat node
2. Deploy the smart contracts using npx hardhat run scripts/deploy.js --network localhost
3. Start the frontend using yarn start

Contributing

If you would like to contribute to this repository, please follow these guidelines:

1. Fork the repository
2. Create a new branch using git checkout -b my-new-feature
3. Make your changes and commit them using git commit -am 'Add some feature'
4. Push your changes to your branch using git push origin my-new-feature
5. Create a pull request

License

This project is licensed under the MIT License.