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<p>The rise of blockchain and the metaverse has promoted the arrival of Web 3.0, a new era in which users can generate and trade valuable digital content like artworks and game items on decentralized platforms in the form of Non-fungible tokens (NFTs), and how to trade NFTs across different metaverses is receiving more and more attention. Existing third-party solutions compromise decentralization and anonymity, contradicting the core principles of Web 3.0. To solve this challenge, we propose the Universal Metaverse Trading Platform (UMTP), a cross-metaverse virtual asset trading platform designed around Self-Sovereign Identity (SSI). Unlike traditional notary schemes that rely on centralized identity management, UMTP pioneers integrating SSI into notarization protocols to enable SSI-based anonymous credential–protected election, enabling committee members to operate using DIDs while maintaining accountability. In simulations, UMTP’s final cleanup rate is 13 percentage points higher than PageRank’s. Against the Long-History Prediction Attack and the Recent-Driven Prediction Attack, UMTP improved security by <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(63.7\%\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>63.7</mn> <mo>%</mo> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(64.8\%\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>64.8</mn> <mo>%</mo> </mrow> </math></EquationSource> </InlineEquation>. Second, some user-oriented secure trading functions are introduced to better meet the diversified needs of users; finally, the Identity Restoration System provides additional insurance for users’ virtual assets. We demonstrate the effectiveness and scalability of our proposed scheme through simulations.</p>

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UMTP: A cross-metaverse virtual asset trading platform designed around self-sovereign identity

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月30日

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  • Wusong Lan,
  • Zuobin Ying,
  • Jianping Cai,
  • Maode Ma,
  • Wanlei Zhou

摘要

The rise of blockchain and the metaverse has promoted the arrival of Web 3.0, a new era in which users can generate and trade valuable digital content like artworks and game items on decentralized platforms in the form of Non-fungible tokens (NFTs), and how to trade NFTs across different metaverses is receiving more and more attention. Existing third-party solutions compromise decentralization and anonymity, contradicting the core principles of Web 3.0. To solve this challenge, we propose the Universal Metaverse Trading Platform (UMTP), a cross-metaverse virtual asset trading platform designed around Self-Sovereign Identity (SSI). Unlike traditional notary schemes that rely on centralized identity management, UMTP pioneers integrating SSI into notarization protocols to enable SSI-based anonymous credential–protected election, enabling committee members to operate using DIDs while maintaining accountability. In simulations, UMTP’s final cleanup rate is 13 percentage points higher than PageRank’s. Against the Long-History Prediction Attack and the Recent-Driven Prediction Attack, UMTP improved security by \(63.7\%\) 63.7 % and \(64.8\%\) 64.8 % . Second, some user-oriented secure trading functions are introduced to better meet the diversified needs of users; finally, the Identity Restoration System provides additional insurance for users’ virtual assets. We demonstrate the effectiveness and scalability of our proposed scheme through simulations.