One wealthy poker player bought a digital picture of a rock for over $400,000. That's no joke, nor is it an exaggeration, but there's a logical reason behind the unusual purchase.
The individual we're talking about is Mike "Timex" McDonald, the once dominant high-stakes poker pro turned successful investor. And if you think "Timex" would just dump 40 stacks of high society on something useless, you haven't followed his career.
NFT's can be anything digital technically (rock cliparts, digital sports videos, you name it). The "non-fungible" part means it's unique and can't be replaced with something else.