11 papers
MixGuard: Towards Detecting and Understanding Mixer Laundering on Ethereum
Qishuang Fu, Hang Zheng, Xihan Xiong +7
Mixers protect privacy by concealing deposit--withdrawal links, but are also abused to launder illicit funds. Existing anti-money laundering studies do not specifically target mixe…
SoK: Cross-Chain Transaction Identification and Matching
Hang Zheng, Qishuang Fu, Joseph Liu +3
Cross-chain bridges, instant cryptocurrency exchanges, and centralized cross-ledger platforms move assets across an increasingly multi-chain ecosystem. However, these systems have…
FlowShield: cryptocurrency anti-money laundering with transaction semantics parsing and fund flow tracking
Qishuang Fu, Andreas Deppeler, Joseph K. Liu +5
Cryptocurrency anti-money laundering (Crypto AML) is increasingly challenged by sophisticated laundering behaviors that rapidly fragment stolen assets through diverse semantics and…
JUNO: Aggregated Vector Consensus for Optimal Asynchronous Common Subset
Liangrong Zhao, Qin Wang, Joseph K. Liu +1
In this paper, we propose \textit{aggregated vector consensus}, a new vector consensus primitive designed for asynchronous networks. The primitive achieves agreement by outputting…
Swimming with Whales: Analysis of Power Imbalances in Stake-Weighted Governance
Yuzhe Zhang, Manvir Schneider, Qin Wang +1
Voting methods weighted by stakes are the fundamental governance paradigm in Proof-of-Stake (PoS) blockchains. Such a paradigm is known to be prone to power distortions: a few user…
SoK: Blockchain Agent-to-Agent Payments
Yuanzhe Zhang, Yuexin Xiang, Yuchen Lei +8
Agentic AI rivals human capabilities across a wide range of domains. Looking ahead, it is foreseeable that AI agents will autonomously handle complex workflows and interactions. Ea…
DAO to (Anonymous) DAO Transactions
Minfeng Qi, Lin Zhong, Qin Wang
Blockchain assets are increasingly controlled by organizations rather than individuals. DAO treasuries, consortium wallets, and custodial exchanges rely on threshold authorization…
Measuring Memecoin Fragility
Yuexin Xiang, Qishuang Fu, Yuquan Li +3
Memecoins, emerging from internet culture and community-driven narratives, have rapidly evolved into a unique class of crypto assets. Unlike technology-driven cryptocurrencies, the…
SoK: Stablecoins in Retail Payments
Yuquan Li, Yuexin Xiang, Qin Wang +3
Stablecoins have emerged as a rapidly growing digital payment instrument, raising the question of whether blockchain-based settlement can function as a substitute for incumbent car…
Leveraging Large Language Models to Bridge Cross-Domain Transparency in Stablecoins
Yuexin Xiang, Yuchen Lei, Yuanzhe Zhang +4
Stablecoins such as USDT and USDC aspire to peg stability by coupling issuance controls with reserve attestations. In practice, however, transparency remains fragmented across hete…
Large Language Models for Cryptocurrency Transaction Analysis: A Bitcoin Case Study
Yuchen Lei, Yuexin Xiang, Qin Wang +5
Cryptocurrencies are widely used, yet current methods for analyzing transactions often rely on opaque, black-box models. While these models may achieve high performance, their outp…