While many express outrage over the environmental impact of Non-Fungible Token (NFT)-based art, Memo Akten shows you the receipts. Building on an impassioned Twitter thread and Medium post, Akten has created a web app that calculates the ecological cost of tracking sales and bids on the blockchain for individual pieces of art distributed through SuperRare. Fire up the site, a random artwork is selected, and you’ll see its environmental impact as measured in number of flights or weeks of an average EU resident’s electricity consumption.