Non-Fungible Token (NFT) Meaning

(Note: While "NFT" was defined above, "Non-Fungible Token" refers to the specific technical standard and asset class). A Non-Fungible Token is a digital asset that adheres to a specific token standard (like ERC-721 or ERC-1155 on Ethereum) which guarantees unique identification.

"Non-fungible" means it cannot be mutually interchanged. A $10 bill is fungible because any $10 bill is worth the same as any other.

A plane ticket is non-fungible; you cannot swap your ticket for someone else's because the destination, time, and seat number are specific to you. Technically, the smart contract tracks ownership by mapping a unique ID to a wallet address.

When a transfer happens, the contract updates this mapping. It does not literally "send" the image file; it updates the ledger to say "Address A no longer owns Token #123; Address B now owns Token #123." This technology solves the "Double Spending" problem for digital goods.

Before blockchain, digital files could be copied infinitely. NFTs create artificial scarcity and verifiable ownership for digital objects, enabling new economies in gaming, art, and intellectual property.