Highly Reliable Oracle Provisioning Infrastructure for Blockchain-Based Distributed Metaverse

Abstract

Blockchain that is a decentralized data management platform is attracting much attention recently. Recent advancement of blockchain technology increases the demand and supply of Non-Fungible Tokens (NFTs) that enable management of ownership concepts for various digital contents. Especially in the metaverse, NFT contents such as images and videos are actively used to facilitate communication within the virtual space. However, systems and technologies that link NFT content in the metaverse with metaverse platforms and generate metadata (e.g., popularity of each content) from data created through user's activities in the metaverse (e.g., user attention, conversation audio) are not realized. Therefore, our research aims to provide highly reliable data regarding the popularity and evaluation function of NFT content. To achieve the objective, we focus on extending existing oracle mechanisms and developing a system that integrates NFT content and various data generated on the metaverse platforms. The oracle technology to handle data provision and verification processes allows users within the metaverse to mutually verify reliability of the data generated through interactions with NFT content. Additionally, the proposed platform enables the use of common devices (e.g., smartphones) as wallets for the blockchain. These common devices can be used to sign transactions through short-range wireless communication when sending data to the blockchain through devices constituting the metaverse platform. This approach ensures user's involvement in data transmission procedure while simultaneously enabling mutual verification of the transmitted data through the blockchain to achieve both wallet security and data reliability.