Very interesting idea. I think with just 100, though, you’d want to do this as a manual process on a single marketplace— not via a smart contract, as I was describing in the article. But yes, you would simply go to OpenSea, create a collection, and upload 100 “prereveal” images. And then when people buy them, one at a time, the artist would consult with them, draw the picture, and replace the image with the purchased one. That would work. There would be various details and considerations, but the idea itself would work.