Our work “T-PBFT: an EigenTrust-based Practical Byzantine Consensus Algorithm” received the best paper award from China Computer Federation China Blockchain Conference (CCF CBC) 2018.
Continue Reading
We are delighted to inform you that the HCSLab at CUHK-Shenzhen will be closed down and the lab will be rebranded as UW Decentralized Computing Laboratory hosted by the Computer Science and Systems Program at the School of Engineering and Technology, University of Washington, Tacoma Campus. You are welcome to visit our new site at sites.uw.edu/weicaics
Continue Reading
Non-Fungible Tokens (NFTs) have emerged as a pivotal digital asset, offering authenticated ownership of unique digital content. Despite it has gained remarkable traction, yet face pressing storage and verification challenges stemming from blockchain’s permanent data costs. Existing off-chain or centralized storage solutions, while being alternatives, also introduce notable security vulnerabilities. We present SemNFT, an innovative decentralized framework integrated with blockchain oracle middleware services, addressing these persistent NFT dilemmas.
Continue Reading
Airdrops have become a standard tactic in Web3 business operations, with Decentralized Applications (DApps) distributing tokens to encourage user engagement based on smart contract rules. This practice has led to the emergence of “airdrop hunters,” individuals who collect wallet addresses to claim these generous token giveaways by interacting with the contracts. While airdrops are beneficial for attracting early DApp users, the self-trading activities of hunters to appear as active participants threaten the ecosystem’s integrity and challenge the decentralization goals of DApps. DApp teams face the challenge of detecting airdrop hunters without disadvantaging genuine users.
Continue Reading
The metaverse, as a rapidly evolving socio-technical phenomenon, exhibits significant potential across diverse domains by leveraging Web3 (a.k.a. Web 3.0) technologies such as blockchain, smart contracts, and non-fungible tokens (NFTs). This survey aims to provide a comprehensive overview of the Web3 metaverse from a human-centered perspective. We systematically review the metaverse’s industrial (data from Dow Jones Factiva database) and academic (data from Google Scholar website) developments over the past 30 years, highlighting the balanced contributions from its core components: Web3, immersive convergence, and crowd intelligence communities.
Continue Reading
We propose a three-stage architecture for metaverse announcers, which is designed to identify events, position cameras, and blend between shots. Based on the architecture, we introduce a Metaverse Announcer User Experience (MAUE) model to identify the factors affecting the users’ Quality of Experience (QoE) from a human-centered perspective. In addition, we implement MetaCast, a practical self-driven metaverse announcer in a university campus metaverse prototype, to conduct user studies for MAUE model. The experimental results have effectively achieved satisfactory announcer settings that align with the preferences of most users, encompassing parameters such as video transition rate, repetition rate, importance threshold value, and image composition.
Continue Reading
Time & Date: 11:00 AM – 12:00 PM, July 20 (Thursday) Venue: Teaching D 115 Speaker: Prof. Zehui XIONG, Singapore University of Technology and Design Host: Prof. Wei CAI, The Chinese University of Hong Kong, Shenzhen Abstract: Emerging with the support of computing and communications technologies, Metaverse is expected to bring users immersive service experiences over the entire virtual-reality […]
Continue Reading
To understand the role of blockchain in sustainability, we propose a three-tier structure based on the lifecycle of natural resources, encapsulating four utilities of blockchain: recording and tracking, wide verification, value trading, and concept disseminating. Based on this, we conduct a case study on Nori, a carbon credit market running on blockchain. Nori leverages the characteristics of blockchain, including public and immutable records, widespread verification achieved through smart contracts, and value creation through token and NFT transactions, to address issues in traditional carbon emission markets.
Continue Reading
Our recent work, “A Comparative Analysis of Centralized and Decentralized Developer Autonomous Organizations Managing Conflicts in Discussing External Crises”, is accepted to be published in IEEE Transactions On Computational Social Systems. Understanding how online developer communities address conflicts that arise in discussions is essential to the collaboration issue. However, few studies have focused on the […]
Continue Reading
Many decentralized applications (DApps) issue airdrops to early supporters for their contributions. However, most eligible users are motivated by financial profit or preferential access to tokens with governance rights to obtain quick cash. In this paper, we take ParaSwap as a representative example, trying to evaluate the Web 3.0 community and the effectiveness of allocation principles through the analysis of eligible users’ behavior and token transaction network.
Continue Reading
Our recent work “How Information Manipulation on Social Media Influences the NFT Investors’ Behavior: A Case Study of Goblintown.wtf” is accepted to be published in IEEE Transactions On Computational Social Systems.
Continue Reading
