Billionaire Mark Cuban is selling a motivational quote as a NFT for $1,700

• Mark Cuban is selling one of his quotes as a non-fungible token (NFT) for $1,700.
• The "Shark Tank" billionaire has 10 of the tokens for sale with a 15% royalty.
• Cuban is also selling hype videos for his Dallas Mavericks basketball team.
• See more stories on Insider's business page.

Billionaire investor Mark Cuban is selling one of his motivational quotes as a non-fungible token (NFT) for $1,700 worth of cryptocurrency.

Cuban's listing consists of a digital image of him with the words, "Nobody ever changed the world by doing what everyone else was doing - Mark Cuban" pasted on top of it.

The "Shark Tank" star and Dallas Mavericks owner's quote has been butchered in the listing description: "No one ever changed the world by what everyone else was doing," it reads.

Cuban still had 10 of the NFTs up for sale at the time of writing. They're each priced at just under 0.96 ether, the cryptocurrency built on top of the Ethereum blockchain.

NFTs are essentially digital certificates of ownership and authenticity, which are securely stored on a blockchain. They're unique tokens used to identify and track digital items.

Cuban is charging a 15% royalty on secondary sales, meaning he gets a cut if the buyers of his NFTs resell them in the future.

The investor, who made his fortune by selling his audio-streaming startup to Yahoo during the dot-com boom, has two other items listed on Mintable, a digital-goods marketplace.

"The UnderDog has spoken," a motivational video for the Dallas Mavericks, is priced at close to $2,300. "MavsSunsGameDayExperience," a 30-second hype video featuring players dunking glowing basketballs, recently sold for about 0.75 ether or more than $1,300.

The hype around NFTs hit a fresh high this week after one was sold for $69 million in a Christie's auction. The buyer of the digital artwork goes by the pseudonym Metakovan and runs a NFT fund called Metapurse.

Cuban discussed his own experimentation with NFTs in an interview earlier this week. He described the option to charge royalties on resale as a "game-changer" that has "changed the nature of selling anything digital."