NFTs, non-fungible tokens, as collectible, digital, blockchain-secured files became an international sensation in 2020, with the trend in trading them peaking in the fall of 2021. Many sold for millions, and one even sold for $69 million. And yet what exactly are they, and why do they have value? This is the definitive book on NFTs in the story of art and collecting.

It is co-authored by an art historian who has written often on the value of art and the history of collecting. NFTs caught Noah Charney's attention and fascinated him. He, too, felt that initial knee-jerk reaction that so many who hear of a $69 million sale do: how is this digital image different from me clicking "right-click save" on my touchpad and downloading it to my computer? Why would anyone pay $69 million for something that's not f*cking there?