A couple of days ago, the musician Grimes sold some animations she made with her brother Mac on a website called Nifty Gateway. Some were one-offs, while others were limited editions of a few hundred – and all were snapped up in about 20 minutes, with total takings of more than US$6 million.
Despite the steep price tag, anybody can watch or (with a simple right-click) save a copy of the videos, which show a cherub ascending over Mars, Earth, and imaginary landscapes. Rather than a copy of the files themselves, the eager buyers received a special kind of tradable certificate called a “non-fungible token” or NFT. But what they were really paying for was an aura of authenticity – and the ability to one day sell that aura of authenticity to somebody else.