What makes them unique is the ability to prove ownership, meaning that an NFT can’t be replicated, changed, or moved without the owner’s permission. This provides a new level of security and utility to digital assets. Projects have taken this concept in many directions, authenticating ownership of an NFT to give access to exclusive events, rewards, airdrops, and a range of other forms of utility. All of this is made possible through the public and decentralized ledger known as the blockchain.