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I'm quite new to NFT and still trying to understand the full workflow... the problem I need to understand is ... when someone buys an NFT I think a link with the digital asset is available to allow the download of the content (for simplicity suppose an NFT); as far I've read on an IPFS filesystem, so a CID or a human-readable link will be sent.

Now, if another user holds the same link, he can download the content without authentication I think... is this so?

And is this a possible scenario? :

  1. I own an NFT with its URL
  2. Someone takes the URL and downloads the file
  3. Supposing it's an image file at high resolution, he changes one pixel
  4. He mints a new NFT for the image I currently have the right on another platform
  5. He can sell the NFT

Is this scenario possible? I think that platforms such as opensea have some way to verify the property of the NFT, but if the image can be downloaded by anybody, how can this be secured?

Thanks

advapi
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    Does this answer your question? [Multiple NFTs from the same source](https://stackoverflow.com/questions/68816228/multiple-nfts-from-the-same-source) – Petr Hejda Jan 26 '22 at 10:44
  • NFT is "just" a token representing the underlying resource (image, video, etc). It doesn't represent any rights to the resource (unless specified in some external license). And it is technically possible to create multiple tokens representing the same resource... OpenSea and other marketplaces usually have a custom check to prevent listing (or to remove) multiple tokens representing the same resource. – Petr Hejda Jan 26 '22 at 10:48

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