NFTs are cryptographic tokens that represent a unique asset on a blockchain, primarily Ethereum. Unlike cryptocurrencies such as Bitcoin or Ethereum, which are fungible and can be exchanged on a one-to-one basis, each NFT has distinct information or attributes that make it unique. This uniqueness allows NFTs to represent various forms of digital goods, including art, music, videos, and virtual real estate. The ownership and transaction history of NFTs are securely stored on the blockchain, providing provenance and authenticity that cannot be tampered with.