Search Results for author: Liyi Zhou

Found 6 papers, 0 papers with code

Blockchain Large Language Models

no code implementations25 Apr 2023 Yu Gai, Liyi Zhou, Kaihua Qin, Dawn Song, Arthur Gervais

This paper presents a dynamic, real-time approach to detecting anomalous blockchain transactions.

Anomaly Detection Intrusion Detection +2

Mitigating Decentralized Finance Liquidations with Reversible Call Options

no code implementations10 Feb 2023 Kaihua Qin, Jens Ernstberger, Liyi Zhou, Philipp Jovanovic, Arthur Gervais

Liquidations in Decentralized Finance (DeFi) are both a blessing and a curse -- whereas liquidations prevent lenders from capital loss, they simultaneously lead to liquidation spirals and system-wide failures.

CeFi vs. DeFi -- Comparing Centralized to Decentralized Finance

no code implementations15 Jun 2021 Kaihua Qin, Liyi Zhou, Yaroslav Afonin, Ludovico Lazzaretti, Arthur Gervais

To non-experts, the traditional Centralized Finance (CeFi) ecosystem may seem obscure, because users are typically not aware of the underlying rules or agreements of financial assets and products.

An Empirical Study of DeFi Liquidations: Incentives, Risks, and Instabilities

no code implementations11 Jun 2021 Kaihua Qin, Liyi Zhou, Pablo Gamito, Philipp Jovanovic, Arthur Gervais

Moreover, we propose an optimal strategy that allows liquidators to increase their liquidation profit, which may aggravate the loss of borrowers.

Cyclic Arbitrage in Decentralized Exchanges

no code implementations21 Apr 2021 Ye Wang, Yan Chen, Haotian Wu, Liyi Zhou, Shuiguang Deng, Roger Wattenhofer

We find that traders have executed 292, 606 cyclic arbitrages over eleven months and exploited more than 138 million USD in revenue.

Quantifying Blockchain Extractable Value: How dark is the forest?

no code implementations14 Jan 2021 Kaihua Qin, Liyi Zhou, Arthur Gervais

Our algorithm can replace unconfirmed transactions without the need to understand the victim transactions' underlying logic, which we estimate to have yielded a profit of 57, 037. 32 ETH (35. 37M USD) over 32 months of past blockchain data.

Cryptography and Security

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