An aspect of a digital artifact linked to the blockchain is referred to as a "non-fungible token," or NFT for short. Texts, photos, digital artworks, audio recordings, domain names, trade cards, and in-game objects are all examples of this. Each NFT item is unique, and we can not substitute it with another one. This is why such assets are referred to as "non-fungible tokens."
NFT coins are based on the blockchain network and are created under the ERC-721 standard. The standardization of NFT issuance promotes greater interoperability, or the capacity of blockchains to communicate with one another. As a result, these non-fungible tokens may be used in a variety of decentralized applications.