NFT(Non-Fungible Token) is a unit of data on a blockchain. By linking NFTs that contain various information with digital data such as image files and 3D assets, they can be a certificates for digital data and prove the following.
By including information about the author, date and place of creation in the NFT, it is possible to prove who, when, and where the digital data was created, even if a copy is made.
By linking NFTs that include the owner's information, it is possible to prove who owns the digital data. This creates an asset value for the digital data.
By including the seller's and buyer's information in the NFT, it is possible to prove who moved from whom to whom.