NFTs [1] are not just cat pictures that people trade on blockchains. Today digital art [2], collectibles [3], and in-game assets [4] are the most visible use cases for these nifty non-fungibles. But the market holds an inconspicuous secret: there is a staggering diversity of online digital content that can be placed on a blockchain in the form of NFTs.

Source: All digital content is going on-chain | by Jake Brukhman | The CoinFund Blog