NFT's a scam (non-fungible tokens)

I’ve been contacted by someone who is interested in buying some of my art work as NFT’s - non-fungible tokens, something in the digital world. I’ve never heard of it before so I looked it up and still wonder how it works and if it’s a scam. Anyone have any knowledge or been contacted to sell as NFT’s?

I get requests all the time, they want to give you big money, BUT you have to buy from their platform - which is almost always very low rated, rather than an established marketplace like OpenSea. Plus, NFT prices are leaking oil…