VevoNFT

VevoNFT is a Solidity-based repository featuring ERC-721 smart contracts designed for the creation, deployment, and sharing of NFTs. This project integrates Pinata for decentralized storage, allowing users to link their NFTs to unique digital assets via CID Hashes. It is optimized for the Sepolia Ethereum Test Network using Remix IDE and MetaMask.

Project Structure

VevoNFT/
├── contracts/
│   └── MediaToken.sol       # ERC-721 smart contract
├── metadata/
│   ├── image.json           # Standard NFT metadata for image assets
│   └── video.json           # Standard NFT metadata for video assets
└── README.md

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Features

• ERC-721 NFT Implementation: Standardized Solidity contracts for unique digital assets.
• IPFS Content Addressing: Integration of Pinata CID hashes to link NFTs to media files (images, videos, etc.).
• Minting & Sharing Logic: Functions to create new tokens with specific metadata and transfer them between users.
• Remix-Ready Functions: Interactive buttons within the IDE to trigger actions like mint (with CID input), approve, and transfer.
• Sepolia Testnet Integration: Fully compatible with Ethereum's Sepolia network for risk-free testing.

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Guide

1. Creation of MetaMask Wallet

• Navigate to the Chrome Web Store and download the MetaMask extension.
• Create your wallet and securely store your recovery phrase.
• Navigate to Settings > Advanced and enable Show Test Networks.
• Select Sepolia from the network dropdown menu.

2. Upload Assets to Pinata

• Go to Pinata.cloud and create an account.
• Upload your media file (Image/Video) using the Upload button and copy its CID.
• Open the appropriate metadata file from the metadata/ folder (image.json or video.json).
• Replace the image or animation_url field value with your IPFS URI in the format ipfs://<YOUR_CID>.
• Fill in the name, description, and any attributes you'd like associated with your NFT.
• Upload the updated JSON file to Pinata and copy its CID — this will be your token URI.

3. Sepolia Ethereum Faucet

• Navigate to a Sepolia Faucet (such as the Google Cloud Faucet or Alchemy) to obtain test ETH.
• Enter your wallet address and complete the required steps to receive your funds.

4. Open Remix IDE

• Go to https://remix.ethereum.org.
• Create a new workspace.
• Create File 1: Inside a contracts/ folder, name it MediaToken.sol and paste the contents of contracts/MediaToken.sol from this repository.

5. Compile and Deploy

• Select the Solidity Compiler tab and click Compile MediaToken.sol.
• Open the Deploy & Run Transactions tab.
• Set the Environment to Injected Provider – MetaMask.
• Click Deploy and confirm the transaction fee in MetaMask.

6. Minting with CID Hash

• In the Deployed Contracts section, locate the safeMint function.
• Enter the recipient wallet address in the to field.
• Paste the CID Hash of your uploaded JSON metadata file (from metadata/) into the uri field, formatted as ipfs://<YOUR_METADATA_CID>.
• Click Transact and confirm in MetaMask. Your NFT is now live and linked to your IPFS content!

7. Confirming the Transaction

• Go to https://sepolia.etherscan.io.
• Paste your Deployed Contract Address to see your minted NFTs and verify the transaction history.

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Tech Stack

• Solidity: Smart contract language.
• Pinata (IPFS): Decentralized storage for NFT media and metadata.
• Remix IDE: Web-based development environment.
• Ethereum Sepolia: Test blockchain network.
• MetaMask Wallet: Digital wallet for transaction signing.
• ERC-721 Standard: Protocol for Non-Fungible Tokens.