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Journal = Blockchains

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Review
Recommendation Systems for the Metaverse
Blockchains 2023, 1(1), 19-33; https://doi.org/10.3390/blockchains1010003 - 24 Aug 2023
Viewed by 286
Abstract
The metaverse, a virtual world closely intertwined with reality, represents the next-generation form of the Internet and encompasses advanced sociability and interaction. With the rapid growth of users and virtual products within this environment, the importance of recommendation systems becomes paramount. This article [...] Read more.
The metaverse, a virtual world closely intertwined with reality, represents the next-generation form of the Internet and encompasses advanced sociability and interaction. With the rapid growth of users and virtual products within this environment, the importance of recommendation systems becomes paramount. This article presents a comprehensive survey that examines the technologies influencing the development of recommendation systems tailored for the metaverse. Firstly, we identify the key trends and fundamental concepts associated with these systems. Secondly, we delve into the core supporting technologies and application scenarios within metaverse recommendation systems. Lastly, we provide insights into future research directions for this rapidly evolving field. Our survey reveals that while progress has been achieved, further investigation is necessary to optimize the technical layout and content of metaverse recommendation systems. Full article
(This article belongs to the Special Issue Feature Papers in Blockchains)
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Review
A Review of Approaches for Detecting Vulnerabilities in Smart Contracts within Web 3.0 Applications
Blockchains 2023, 1(1), 3-18; https://doi.org/10.3390/blockchains1010002 - 23 Aug 2023
Viewed by 329
Abstract
Smart contracts, programs running on a blockchain, play a crucial role in driving Web 3.0 across a variety of domains, such as digital finance and future networks. However, they currently face significant security vulnerabilities that could result in potential risks and losses. This [...] Read more.
Smart contracts, programs running on a blockchain, play a crucial role in driving Web 3.0 across a variety of domains, such as digital finance and future networks. However, they currently face significant security vulnerabilities that could result in potential risks and losses. This paper outlines the inherent vulnerabilities of smart contracts, both those typical of their applications and those unique to Web 3.0 applications. We then systematically classify the techniques based on their core approach to detecting vulnerabilities in smart contracts. Using these approaches, we conduct a comparative analysis of existing tools in terms of their vulnerability coverage, detection effectiveness, open-source availability, and integration capabilities. Finally, we present the Co-Governed Sovereignty Multi-Identifier Network (CoG-MIN) as a case study to demonstrate the significance of smart contract application security in establishing a community with a shared future in cyberspace during the Web 3.0 era and anticipate future research directions with challenges. To conclude, this study addresses the gap in integrating existing smart contract security research with the advancement of Web 3.0 development, while also providing recommendations for future research directions. Full article
(This article belongs to the Special Issue Feature Papers in Blockchains)
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Editorial
Introduction to a New Open Access Journal Published by MDPI: Blockchains
Blockchains 2023, 1(1), 1-2; https://doi.org/10.3390/blockchains1010001 - 01 Feb 2023
Viewed by 1358
Abstract
Blockchain, one of the representative technologies of Web 3 [...] Full article
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