Amid NFT boom, artists are starting to worry about climate costs

A non-fungible token (NFT) displayed on the website of NFT marketplace OpenSea is seen through a magnifying glass. Photo: Reuters

Digital art is nothing new to vonMash, who describes his blend of painting, video and sound as "afro-delic" - a psychedelic twist on Afrofuturism.

But when the South African started thinking about selling his work as crypto-art on a blockchain, he hesitated.