Non-fungible token - Wikipedia

A non-fungible token (NFT) is a unit of data stored on a digital ledger, called a blockchain, that certifies a digital asset to be unique and therefore not interchangeable. NFTs can be used to represent items such as photos, videos, audio, and other types of digital files.

People are spending millions on NFTs. What? Why?
NFTs, or non-fungible tokens, have been A Thing for a while now, but what’s the meaning of “NFT”? A couple of high-profile stories have made us stop and go “Hey... what exactly are these things?” And you may have had the same question.
NFT Markets Post Record-Breaking Week - CoinDesk
NFT marketplace OpenSea saw record trading volume on Saturday and Sunday, as CryptoPunks, ArtBlocks, and Bored Ape Yacht Club prices soared.
From the Senate’s infrastructure bill proposal to record trading volume for NFTs: 5 key things that happened in crypto this past week
From the Senate’s infrastructure bill proposal to a record trading volume for NFTs, here are five key things that happened in crypto this past week.
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Non-fungible tokens (NFT) | ethereum.org
An overview of NFTs on Ethereum