No. Copyright must be explicitly assigned.
> Also, consider that in NFTs, the only one selling an NFT to the Mona Lisa is Leonardo.
Nah anyone can do it any time.
No one is talking about assigning copyright. The question is about a license to display the content on a website. I am fairly certain you have heard of non-verbal contracts before. For example, here is what the UK government has to say about an implied copyright license:
https://www.gov.uk/guidance/license-sell-or-market-your-copy...
> Nah anyone can do it any time.
Anyone can also sell a signature of Clooney. And yet no one does, nor would anyone buy it. This is not something that plays into a serious analysis of the NFT space, and so I am not sure why you would want to find it interesting to talk about.
Also, consider that in NFTs, the only one selling an NFT to the Mona Lisa is Leonardo.