OpenSea is a marketplace to trade digital collectibles and crypto assets. In an NFT marketplace like OpenSea, a seller or buyer must register on the NFT marketplace, and KYC verification must be completed to get registered on the platform successfully. The next vital step is to set up their wallet for a seamless trading experience. Now sellers can mint and list NFTs on the marketplace, and buyers can purchase these NFTs. The NFTs can either be bought at a fixed price or in auctions. Thus we have seen how the NFT marketplace like OpenSea works. You can also create your own NFT platforms with a white-label Opensea Clone. Reach out to blockchain developers for further customizations.