RE: The First NFTs have been created!!!

Although I don't know how this NFT exactly works, but seems you guys took a major step forward. Smart Contracts is a term used a lot; Also not sure what this in details exactly is. What I do know is that in the real world we have quite a lot of assets that has some to more value. Can you explain if such real asset can leverage NFT to get a unique ID on the blockchain and through that can be ID-ed and tracked uniquely? Can NFT somehow be used to make sure a digital photograph can be ID-ed as being original or a copy? When the later is the possible, NFT can be very powerful for any digital artists to create and sell limited editions, or unique digital art.