Non Fungible Mutable Tokens: dynamic assets traceability for the Metaverse
Damiano Di Francesco Maesa, Andrea Lisi, Paolo Mori, Laura Ricci, Simone Schiavone · 2023
In this paper we focus on the mutability of Non Fungible Tokens associated to digital assets in the metaverse. We argue that mutability is a key property of digital assets if we want to provide users with a virtual experience in the metaverse as close as possible to the real world. We discuss the shortcomings of current dynamic Non Fungible Token proposals, and present the advantages of a new mutable Non Fungible Token approach based on decoupling the asset ownership and descriptor in separate smart contracts. To show a possible usage of mutable Non Fungible Tokens in a metaverse, we provide a reference example about a university gadget. Finally, we present a proof of concept implementation of our reference example on the Decentraland metaverse and the Goerli Ethereum testnet to showcase its feasibility.