But what is the NFT ?
Well, NFT is an acronym for Non-Fungible Token. To define the term fungible, in economy, something which is fungible means that it is easily exchangeable, for example, the different currencies are fungible, because a coin of 1 euro is always worth 1 euro or 2 coins of 50 cents, whatever happens.
So, something of non-fungible means the opposite, it means that it cannot be interchanged and has a unique property. For example, it could be a painting like Mona Lisa which is one-of-a-kind, even if you buy a print of it, you will never own the original.
We can compare theses NFT to digital certificates of ownership for unique non-fungible virtual things which can be bought and sold.