Minting and Listing NFTs via Manifold & OpenSea (Ethereum)

🎯 Course Objectives

By the end of this module, learners will:

• Upload artwork and metadata to Manifold Studio

• Mint NFTs under their own smart contract

• List NFTs for sale on OpenSea

• Understand the interoperability between Manifold and major NFT marketplaces
  
  Primary Blockchain: Ethereum
  Tools/Platforms: Manifold Studio, MetaMask, OpenSea

🧰 Step-by-Step Guide

1. Connect MetaMask to Manifold Studio

• Navigate to Manifold Studio and click "Connect Wallet" in the center of the page.
  
  

  

• Select MetaMask and authorize the connection.
  
  

  

• Ensure you have deployed a smart contract. If not, refer to the previous module on deploying a smart contract with Manifold.
  
  

  

2. Mint an NFT

• From your Manifold dashboard, select your deployed contract.
  
  

  

• Select the contract you will be minting into or create a new contract.
  
  

  

• Upload your artwork file (supported formats include JPG, PNG, GIF, MP4, etc., up to 300 MB).

• Add a title and description for your NFT.

• Optionally, add properties or attributes to your NFT.

• Click "Mint" and confirm the transaction in MetaMask to mint your NFT.
  
  

  

Note: Ensure you have sufficient ETH in your wallet to cover gas fees.

3. List NFT on OpenSea

• Navigate to OpenSea and connect your MetaMask wallet.
  
  

  

• Click on your profile icon and select "Profile" to view your collected NFTs.
  
  

  

• Locate the NFT you minted via Manifold and click on it.
  
  

  

• Click the "Sell" button in the top-right corner.

• Choose your preferred sale method:

  • Fixed Price: Set a specific price for immediate purchase.

  • Timed Auction: Set a starting price and allow buyers to place bids over a set duration.

• Set the duration for the listing.

• Click "Complete listing" and confirm the transaction in MetaMask.
  
  

  

Note: OpenSea charges a 2.5% fee on the sale price.