NFT [Non-Fungible Token], the token is nothing but some information related to digital content. Ex. art, game objects, music, accessories, text, images, tweets etc… in the form of digital. Now Non-Fungible, the digital content which is also coined as digital assets is irreplaceable, which means cannot be replaced with any other digital asset on the Blockchain Networks. Yes, NFT Marketplace like Opensea technologies on Ethereum blockchain was created on the basis of ERC-721 and ERC-1155 standards. It has been popular for its tradability and accessibility in the crypto marketplace. So if you like to build the opensea clone you need to understand the workflow of White-label OpenSea NFT Marketplace.