There is a hidden risk in the NFT market that few people have pointed out: the artwork you spend a lot of money on is actually not truly in your hands. Most of the time, you're just buying a link pointing to an address in the cloud, and whether that link is active or the content still exists is all uncertain.

Until recently, I played around with Walrus Protocol combined with the Kiosk standard in the Sui ecosystem, and only then did I understand what real "data trading" looks like.

**10GB file, one NFT to handle it**

I am an independent photographer with a collection of raw 8K resolution footage, about 10GB in total. The previous approach was quite awkward: upload to a cloud storage, give the buyer a link, and then worry—what if they transfer it to someone else after getting it? Is the amount I received fair for this collection of assets?

Now, the process has been reversed. I upload this 10GB of data to Walrus Protocol, then directly mint an NFT, embedding the data's Blob ID and access permissions. More importantly, I set an "access threshold" through Kiosk's policy engine—only the holder of this NFT can read the high-resolution original image, while others see only garbled data.

**Ownership and decryption rights transfer simultaneously**

The moment I sell the NFT to the buyer on Kiosk, something truly magical happens.

As soon as the transaction is confirmed on the blockchain, both the ownership and decryption rights of the data jump to the buyer's account. I don't need to manually deliver the data, and they don't have to worry about me taking the money and running. The entire logic is closed within the smart contract.

This is no longer just "trading virtual assets," but a real "data container transfer." The commercial interface not only manages permissions but also automates the entire delivery process. This is what Web3 should look like.