Self-described "Crypto Queen" (it's in her Twitter and Instagram bios) Grimes revealed a collection of NFTs, or non-fungible tokens, on Nifty Gateway on Sunday (2/28). They're rapidly gaining popularity in the art and music worlds, and if you're not familiar, Forbes describes them as "an entry on a blockchain... But unlike most bitcoin–which is fungible, meaning that one coin is essentially indistinguishable from another and equivalent in value–tokens on these blockchains are non-fungible. That means they are unique, so they can represent one-of-a-kind things, like a rare William Shatner headshot or even the title to a piece of real estate."
Grimes' collection, "WarNymph," is a collaboration with her brother, Mac Boucher, and includes still images, as well as a few animations, "Death of the Old," "Earth," and "Mars," that are set to unreleased music -- "Death of the Old" features a demo of "Anhedonia," "Earth" features "Ærythe," and "Mars" features "Mars Theme." From the description: