How to use an NFT marketplace? (Buying & selling)

Setting Up a Web3 Wallet

1. Install MetaMask or Trust Wallet via official browser extension or mobile app.

2. Create a new wallet and securely store the 12-word recovery phrase offline.

3. Fund the wallet with native chain tokens—ETH for Ethereum, OKT for OKX Chain, MATIC for Polygon—to cover gas fees.

4. Verify wallet connectivity by checking balance and transaction history on Etherscan or OKLink.

5. Switch network settings inside the wallet to match the target NFT marketplace’s supported chain.

Navigating Marketplace Interfaces

1. Access OpenSea, Blur, or OKX NFT Market through desktop or mobile web interface.

2. Click “Connect Wallet” in the top-right corner and select your installed wallet.

3. Approve connection permissions without granting unlimited token allowances.

4. Use filters like collection name, price range, traits, or floor price to narrow search results.

5. Bookmark frequently visited collections and enable real-time notifications for listed drops.

Purchasing NFTs

1. Select an NFT listing and review ownership history, transaction count, and contract verification status.

2. Choose between “Buy Now” for fixed-price listings or “Place Bid” for auctions.

3. Confirm gas fee estimates before signing; avoid high-fee periods during network congestion.

4. Wait for blockchain confirmation—Ethereum finality may take 1–3 minutes, Polygon under 10 seconds.

5. View purchased assets instantly in the wallet’s NFT tab or marketplace profile section.

Listing and Selling NFTs

1. Go to “My Collections” or “Portfolio”, locate the desired NFT, and click “Sell”.

2. Choose listing type: fixed price, Dutch auction, or English auction.

3. Set duration, currency (ETH, USDC, OKT), and royalty percentage if platform supports creator fees.

4. Sign approval transaction to grant marketplace smart contract transfer rights over the asset.

5. Pay gas to finalize listing—some platforms batch approvals to reduce cumulative costs.

Managing Ownership and Transfers

1. Initiate transfers directly from wallet interface using recipient address and token ID.

2. Verify destination wallet compatibility—certain wallets do not display NFTs from unsupported standards like ERC-1155.

3. Check transaction hash on-chain explorer to confirm successful minting or transfer.

4. Revoke marketplace approvals after selling to minimize exposure to compromised contracts.

5. Export wallet activity logs for tax reporting or audit purposes using built-in export tools.

Frequently Asked Questions

Q1: Can I buy NFTs using fiat currency on OKX?Yes, OKX allows users to convert fiat to stablecoins like USDT via integrated on-ramp services before purchasing NFTs.

Q2: Why does my NFT not appear in MetaMask after purchase?MetaMask only auto-detects ERC-721 tokens on Ethereum mainnet by default; manually add the contract address and token ID under “Import Tokens”.

Q3: Do I need to pay gas twice when listing and selling an NFT?Yes—first for approving marketplace contract access, second for executing the sale transaction upon buyer acceptance.

Q4: What happens if I lose my wallet’s private key but have the seed phrase?You can fully restore wallet contents including NFT holdings across all compatible chains using the original 12-word phrase.