Recently, a piece of art sold at Christie's auction house for an eye-watering $69m - but the winning bidder will not receive a sculpture, painting or even a print.

Instead, they get a unique digital token known as an NFT.

But what are they and how are they fetching such huge sums of money?

Andy O’Donoghue joined Bobby to discuss.

Listen and subscribe to Down to Business with Bobby Kerr on Apple Podcasts and Spotify.

Download, listen and subscribe on the Newstalk App.

You can also listen to Newstalk live on newstalk.com or on Alexa, by adding the Newstalk skill and asking: 'Alexa, play Newstalk'.