An NFT is a “Non-Fungible Token”. “Non-fungible,” means that every token is unique. ”Token” means that it can be transferred on a blockchain.
Blockchain is a system of recording information in a way that makes it difficult or impossible to change, hack, or cheat the system. A blockchain is essentially a digital ledger of transactions that is duplicated and distributed across the entire network of computer systems on the blockchain.
Each NFT is encoded with a unique key that makes it distinguishable from all other NFTs. This means we finally have a universal way (at least on planet Earth) to recognize ownership in the digital domain.
Furthermore, an NFT is a digital asset that represents real-world objects like art, music, in-game items and videos. They are bought and sold online, frequently with cryptocurrency, and they are generally encoded with the same underlying software as many cryptocurrencies.