Why are NFTs all the rage?

An image from the collage Everydays: The First 5000 Days. Beeple’s work has kickstarted a craze for NFTs. — Reuters

A digital art piece, tweaked using cryptocurrency technology to make it one-of-a-kind, sold at an auction for millions.

That transaction made global headlines and buoyed already-mushrooming interest in these kinds of digital objects – known as non-fungible tokens, or NFTs – that have captured the attention of artists and collectors alike.