TL;DR: The NFT market has drastically declined since its peak in 2021, with most NFT collections having no value. There’s an oversupply of NFTs, leading to a buyer’s market, and environmental concerns due to energy consumption. Top NFTs also struggle to maintain value, and the future of NFTs depends on utility and genuine value rather than speculation.
Well it’s the same as with any document, digital or physical, that shows ownership. Obviously it being NFT wouldn’t make it magically legit, same as with anything else.
But like I said I don’t really see a point of that kind database being blockchain/NFT based anyway.