Nifty gateaway is shutting down... Only self custody smart contract will remain. https://www.theblock.co/post/386928/geminis-nifty-gateway-to-shut-down-on-feb-26-after-pioneering-nft-art-boom It was a PITA to track NG sales, but if you're looking for the most famous one, I listed them here a while ago (regrouped under the 'nifty gateway' label) https://dune.com/queries/4752412 If you want to verify, everything is on comments here https://dune.com/queries/4127870