NFTs, or Non-Fungible Tokens, are unique digital assets that represent ownership or proof of authenticity of a specific item or piece of content using blockchain technology. NFTs are typically used to represent digital or tangible assets like art, music, videos, virtual real estate, and other digital content. They are stored on blockchain platforms, most commonly on Ethereum, using smart contracts to establish and verify ownership. The decentralized and transparent nature of blockchain ensures the security and authenticity of NFTs, making it clear who owns a particular digital asset at any given time.