CrowdFunding Platform

Decentralized Crowdfunding Platform

A modern, blockchain-based crowdfunding platform built with Next.js, Solidity smart contracts, and integrated with Chainlink services for enhanced functionality and fairness.

About This Project

This decentralized crowdfunding platform enables users to create and support innovative projects using cryptocurrency. The platform features NFT rewards, automated goal handling, and provably fair winner selection through Chainlink VRF.

Key Features

Campaign Creation: Launch crowdfunding campaigns with customizable goals and deadlines

ETH Contributions: Support projects using Ethereum with real-time progress tracking

NFT Rewards: Automatic NFT minting for special contributors (First, Top, VRF Winner)

Fair Winner Selection: Chainlink VRF integration for provably random winner selection

Real-time Price Feeds: Chainlink Price Feeds for accurate ETH/USD conversion

Automated Goal Handling: Chainlink Automation for campaign lifecycle management

Responsive Design: Modern UI with dark/light mode support

IPFS Integration: Decentralized storage for NFT metadata and images

Design Patterns

The project implements several key design patterns:

Factory Pattern: Campaign creation through the main contract

Observer Pattern: Event-driven architecture for campaign updates

Context Pattern: React Context for state management across components

Provider Pattern: Web3 and wallet connection management

Compound Component Pattern: Reusable UI components with shadcn/ui

Custom Hook Pattern: Encapsulated logic in custom React hooks

Security Measures

Reentrancy Protection: OpenZeppelin's ReentrancyGuard implementation

Access Control: Proper permission management for sensitive functions

Input Validation: Comprehensive validation for all user inputs

Safe Math: Built-in overflow protection in Solidity 0.8+

Environment Variables: Secure storage of sensitive configuration

Type Safety: Full TypeScript implementation for type safety