How to prove that you are the owner of the NFT?

Question

blockchain

Hello. Now there is a wave with these nft tokens, I read several articles, but there was no clarity. How do I prove that I am the owner?

Here, for example, I and the creator of that gif have the file "nyan_cat.gif" stored on the PC. I go to the site and say: "I am the creator." I get a token and I sell this GIF. Well? What's the point in that?

How does the owner prove that he is the owner? And if the owner is lying that he is the owner? How can we prove authenticity before getting a token?

Answer 1

what exactly am I the owner?

And you literally own this token. Ownership is fixed in the ETH blockchain
https://habr.com/ru/company/timeweb/blog/545620/