CFCS, Computer Science Department, Peking University, Beijing, China.

I am a fifth-year PhD student at Peking University, supervised by Prof. Xiaotie Deng. I am expected to obtain my doctoral degree in July next year. I obtained my Bachelor of Science degree from the Department of Computer Science at Peking University.

My research focuses on addressing endogenous security problems in blockchain protocols by analyzing economic vulnerabilities and designing incentive-compatible, cryptographically secure, and operationally efficient solutions. To achieve this, I have developed computational techniques and tools for targeted scenario analysis, modeling, and protocol design, including: 1) A dynamic protocol analysis framework integrating algorithmic game theory, Markov decision processes, and reinforcement learning. 2) A protocol implementation methodology combining mechanism design, algorithmic optimization, and cryptographic primitives.

In my work, I reconstruct protocol execution scenarios to model miners’ and participants’ utility functions and strategic spaces, analyze behavioral interactions, and design new mechanisms that satisfy target conditions. By bridging theory and practice, I validate conclusions through simulations and code implementations. My research outcomes have been adopted by Cryptape’s Nervos blockchain and China’s ChainMaker to enhance ecosystem security and consensus protocols.

During my Ph.D. studies, I was a visiting researcher in Prof. Bin Xiao’s group at The Hong Kong Polytechnic University from January 2023 to May 2023.

My email:

limo923 [at] pku.edu.cn

limonion923 [at] gmail.com

Publications

* indicates equal contribution.

Working Papers

Sealed-bid Auctions on Blockchain with Timed Commitment Outsourcing
Jichen Li*, Yuanchen Tang*, Jing Chen, Xiaotie Deng
To be submitted

Survey on Strategic Mining in Blockchain: A Reinforcement Learning Approach
Jichen Li*, Lijia Xie*, Hanting Huang, Bo ZHou, Binfeng Song, Wanying Zeng, Xiaotie Deng, Xiao Zhang
In submission

Multi-Block Withholding Attacks on Ethereum 2.0: An MDP Approach with Reinforcement Learning
Wanying Zeng, Binfeng Song, Bo Zhou, Jichen Li, Lijia Xie, Xiaotie Deng
In submission

Composition of Authenticated Byzantine Agreement with Man-in-middle Attack
Jichen Li, Xuanzhi Xia, Jing Chen, Xiaotie Deng
To be submitted

Networked Public Goods Games with Prosocialism
Jichen Li, Yukun Cheng, Xiaotie Deng
To be submitted

2024

Decentralized Funding of Public Goods in Blockchain System: Leveraging Expert Advice
Jichen Li, Yukun Cheng, Wenhan Huang, Mengqian Zhang, Jiarui Fan, Xiaotie Deng, Jan Xie, Jie Zhang
IEEE Trans. Cloud Comput. 12(2): 725-736 (2024)

2023

n-MVTL Attack: Optimal Transaction Reordering Attack on DeFi
Jianhuan Wang, Jichen Li, Zecheng Li, Xiaotie Deng,Bin Xiao
ESORICS 2023

Altruism, Collectivism and Egalitarianism: On a Variety of Prosocial Behaviors in Binary Networked Public Goods Games
Jichen Li, Xiaotie Deng, Yukun Cheng, Yuqi Pan, Xuanzhi Xia, Zongjun Yang, Jan Xie
AAMAS 2023: 609-624

MEV Makes Everyone Happy under Greedy Sequencing Rule
Yuhao Li*, Mengqian Zhang*, Jichen Li*, Elynn Chen, Xi Chen, Xiaotie Deng
DeFi@CCS 2023: 9-15

A Provable Softmax Reputation-Based Protocol for Permissioned Blockchains
Hongyin Chen, Zhaohua Chen, Yukun Cheng, Xiaotie Deng, Wenhan Huang, Jichen Li, Hongyi Ling, Mengqian Zhang
IEEE Trans. Cloud Comput. 11(1): 1065-1077 (2023)

An Efficient and Robust Committee Structure for Sharding Blockchain
Mengqian Zhang, Jichen Li, Zhaohua Chen, Hongyin Chen, Xiaotie Deng
IEEE Trans. Cloud Comput. 11(3): 2562-2574 (2023)

2022

Funding Public Goods with Expert Advice in Blockchain System
Jichen Li, Yukun Cheng, Wenhan Huang, Mengqian Zhang, Jiarui Fan, Xiaotie Deng, Jan Xie
ICDCS 2022: 180-190

Insightful Mining Equilibria
Mengqian Zhang, Yuhao Li, Jichen Li, Chaozhe Kong, Xiaotie Deng
WINE 2022: 21-37

2020

CycLedger: A Scalable and Secure Parallel Protocol for Distributed Ledger via Sharding
Mengqian Zhang, Jichen Li, Zhaohua Chen, Hongyin Chen, Xiaotie Deng
IPDPS 2020: 358-367

Professional Service

Conference Review

ICDCS 2023, AFT 2024, WINE 2024, FOCS 2024

Conference Organization

Chair of the 2023-2024 CSIAM Blockchain Technology and Application Forum Student Track
Host of the CSIAM Track at IJTCS 2024
Question Setter of CACC 2024 Algorithm Ability Competition