Backen NFT

🖼️ Project Title: NFT Minting & Marketplace DApp

🔍 Project Description

The NFT Minting & Marketplace DApp is a decentralized application that allows users to create (mint), buy, and sell NFTs (Non-Fungible Tokens) directly on the blockchain without intermediaries. It provides creators, artists, and collectors with a seamless, trustless, and transparent platform for digital ownership and trade.

The platform leverages smart contracts built on the Ethereum Virtual Machine (EVM) and fully integrates with IPFS for decentralized file storage. It supports EIP-721 for NFTs, EIP-2981 for royalty distribution, and includes a simple on-chain marketplace for listing and purchasing NFTs.

This project demonstrates how blockchain can empower creators to tokenize their art and retain royalties automatically while allowing buyers to verify authenticity and provenance on-chain.

🎯 Objectives

Build a decentralized NFT ecosystem enabling creators to mint and sell digital assets.
Ensure full transparency and ownership using blockchain verification.
Implement creator royalties on secondary sales.
Enable easy wallet connection and transactions with MetaMask.
Provide a user-friendly interface for minting, listing, and buying NFTs.

⚙️ Core Features

Category	Description
NFT Minting	Users can mint ERC-721 NFTs with metadata stored on IPFS.
NFT Marketplace	List, cancel, and buy NFTs with automatic payment distribution.
Royalties	Implements EIP-2981 so creators earn a percentage from every resale.
Wallet Integration	Connects to MetaMask / WalletConnect for direct blockchain interaction.
IPFS Integration	Stores images, metadata, and assets in a decentralized manner.
Admin Controls	Platform owner can manage platform fees and royalties.

🧱 System Architecture

Frontend:

Built with React.js / Next.js
Uses Ethers.js and Wagmi for blockchain interaction
WalletConnect + MetaMask integration

Smart Contracts:

ERC-721 NFT Contract (for minting NFTs with metadata)
Marketplace Contract (for listing, buying, and royalties)
Written in Solidity, using OpenZeppelin libraries

Storage:

IPFS / Pinata / Web3.Storage for decentralized asset hosting

Backend (optional):

Node.js / Express backend for pinning metadata and indexing blockchain events
Database: MongoDB / PostgreSQL for caching listings

💰 Transaction Flow

Minting:
- User uploads image → Metadata generated → IPFS URI created → Mint transaction executed.
Listing:
- NFT owner lists token on marketplace with a fixed price.
Buying:
- Buyer pays listing price → Contract transfers NFT and distributes payments:
  - Royalty → Creator
  - Platform Fee → Admin
  - Remaining → Seller

🔒 Security Features

Reentrancy protection (ReentrancyGuard)
Access control (Ownable / AccessControl)
Verified contract source (Etherscan)
Royalties implemented with EIP-2981 standard

💡 Tech Stack

Layer	Technology
Blockchain	Ethereum / Polygon / BSC (EVM-compatible)
Smart Contracts	Solidity, OpenZeppelin, Hardhat
Frontend	React.js, Next.js, Ethers.js, Wagmi
Storage	IPFS / Pinata / Web3.Storage
Backend (optional)	Node.js, Express, MongoDB
Testing	Hardhat, Chai, Mocha
Deployment	Vercel / Netlify for frontend, Infura / Alchemy for RPC endpoints

📦 Deliverables

✅ Smart Contracts (NFT + Marketplace)
✅ IPFS Integration for Metadata
✅ Frontend UI with Wallet Connect
✅ Minting & Buying Functionalities
✅ Admin Dashboard (view fees, royalties, withdraw funds)
✅ Documentation & Deployment Guide

🚀 Future Enhancements

NFT Collections & Categories
Lazy Minting (mint-on-demand to save gas)
Auction System (time-based bidding)
Multi-chain Support (Polygon, Arbitrum, BSC)
The Graph Integration for faster indexing
Fiat payments via on-ramp services

🧠 Learning Outcomes

Understanding of ERC-721 & EIP-2981 standards
Hands-on experience with smart contract development using Hardhat
Integration of decentralized storage (IPFS)
Connecting Web3 frontend with blockchain backend
Deployment and verification of contracts on testnets/mainnet

📄 Conclusion

The NFT Minting & Marketplace DApp is a decentralized platform that embodies the principles of Web3 — transparency, user ownership, and censorship resistance. It empowers creators to monetize their work, ensures fair royalties, and provides collectors with verifiable, immutable digital assets.