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MyNFT Project

This project demonstrates the creation, deployment, and minting of an ERC-721 Non-Fungible Token (NFT) on the Sepolia testnet. The NFT metadata is stored on IPFS, and the minted NFTs can be viewed on OpenSea's Sepolia testnet.

Project Structure

  • contracts/

    • MyNFT.sol: The main smart contract that implements the ERC-721 standard using OpenZeppelin libraries.

  • scripts/

    • mint.js: A script to mint an NFT by attaching to the deployed contract and passing the metadata URI.

  • metadata/

    • metadata.json: Example JSON file containing metadata for the NFT, including the name, description, and image URI.

  • .env

    • Contains environment variables, including the wallet address where the NFT will be minted.

Requirements

  • Node.js and npm
  • Hardhat
  • A MetaMask wallet with some Sepolia testnet ETH
  • An account on Pinata or another IPFS service

Setup

  1. Clone the Repository:

    git clone https://github.com/DonGuillotine/nft-opensea-contract.git
cd MyNFT

  2. Install Dependencies:

    npm install

  3. Configure Environment Variables:

    Create a .env file in the root directory with the following content:

    OWNER_ADDRESS=0xYourEthereumAddress

    Replace 0xYourEthereumAddress with your MetaMask wallet address.

  4. Deploy the Smart Contract:

    To deploy the smart contract to the Sepolia testnet:

    npx hardhat run scripts/deploy.js --network sepolia

    This will deploy your MyNFT contract and output the contract address.

  5. Mint an NFT:

    Update the mint.js script with the correct contract address and metadata URI. Then, run the script:

    npx hardhat run scripts/mint.js --network sepolia

    This script mints an NFT to the specified OWNER_ADDRESS.

  6. View Your NFT on OpenSea:

    After minting, you can view your NFT on OpenSea's Sepolia testnet section. If the image or metadata does not appear immediately, use the "Refresh Metadata" button on OpenSea.

Troubleshooting

  • Image Not Showing on OpenSea: Make sure that the image URI in the metadata.json is correctly pointing to a valid IPFS link. If the ipfs:// link is not displaying the image, try using a public gateway URL (e.g., https://gateway.pinata.cloud/ipfs/...).

  • Contract Deployment Issues: Double-check your network settings in hardhat.config.js and make sure you have enough Sepolia testnet ETH in your MetaMask wallet.

Contributing

Contributions are welcome! Please open an issue or submit a pull request with your changes.

License

This project is licensed under the MIT License.