Abridged Neat Key Instance: an Integrity Property for Digital Multimedia Asset of Non-fungible Token

The non-fungible token (NFT) is a record used to ensure the privilege and ownership of a certain digital asset with a distinctive digital identifier in a blockchain. In digital-multimedia assets i.e. images, videos, audio, etc. NFTs generally retain references to the properties of the asset. Due to the nature of blockchain technology, NFT is oftentimes associated with its immutability. NFTs that represent digital multimedia assets may utilize blockchain-based file servers, but oftentimes time the associated file is stored off-chain. This makes the assets themselves vulnerable to link rot and causes the NFT owner to lose access to their assets since the off-chain storageis not immutable like the NFT. To preserve the integrity of the NFT’s associated digital assets, we introduce Abridged Neat Key Instance (ANKI). ANKI is a property embedded inside NFT that contains the seed number of the digital multimedia asset to be procedurally generated. We are taking advantage of Procedural Content Generation (PCG) technology to reproduce the digital multimedia asset presented by the information available inside the NFT itself. By leveraging Procedural Content Generation(PCG) technology, our approach can regenerate the exact digital asset directly from the information encoded within the NFT.In our experiments, we successfully recreated music files using the ANKI seed and a PCG engine, verifying their accuracy by comparing the MD5 and SHA-512 checksums of the generated files with those of the original NFT assets. All 50 generated musicfiles produced identical checksums to their original counterparts,confirming the integrity of our method.