No, they are right. What they are saying is that even though pretty much all NFTs contain a link to a picture on the blockchain, theoretically you could write a really, really small image in the space where you would normally write the URL. From a quick google, that’s 100 bytes. For a black and white image, that’s 100 pixels. For color, that’s around 30 pixels
But in NFTs the picture is not on the Blockchain. Only a link to the picture is on the Blockchain and the picture itself is still just on the web.
No, they are right. What they are saying is that even though pretty much all NFTs contain a link to a picture on the blockchain, theoretically you could write a really, really small image in the space where you would normally write the URL. From a quick google, that’s 100 bytes. For a black and white image, that’s 100 pixels. For color, that’s around 30 pixels