Junjie Hu / 胡俊杰

Ph.D | School of Computer Science, Shanghai Jiao Tong University

nakamoto@sjtu.edu.cn GitHub Google Scholar
School of Computer Science, Shanghai Jiao Tong University

About

Junjie Hu

Research Interests

  • • Blockchain
  • • Economic Incentive
  • • Consensus Protocol

Education

Ph.D. in School of Computer Science

Shanghai Jiao Tong University, 2024-Present

Short Bio

I am currently working toward the Ph.D. degree with the School of Computer Science, Shanghai Jiao Tong University, China.

I received the National Scholarship, National Encouragement Scholarship, Sichuan Provincial Comprehensive Quality Level-A Certificate, and Chongqing Municipal Merit Student.

My research focuses on the blockchain, economic incentive and consensus protocol.

Awards & Honors

  • 2018 National Scholarship
  • 2019 National Encouragement Scholarship
  • 2021 Chongqing Municipal Merit Student
  • 2022 Sichuan Provincial Comprehensive Quality Level-A Certificate
  • 2023 Outstanding Graduate Student Cadres at University of Electronic Science and Technology of China
  • 2023 Outstanding Athletes of the Sichuan Provincial College Table Tennis Tournament
  • 2024 Outstanding Graduate Student Cadres at University of Electronic Science and Technology of China
  • 2025 Nomination Award for Inspirational Role Models at Shanghai Jiao Tong University (15 Recipients)
  • 2025 Best Paper Award, BlockSys 2025
  • 2025 Merit Student at Shanghai Jiao Tong University

Publications

Conference Papers

[C1] Junjie Hu and Na Ruan. "BM-PAW: A Profitable Mining Attack in the PoW-based Blockchain System."

In Proceedings of the 7th International Conference on Blockchain, Artificial Intelligence, and Trustworthy Systems (BlockSys), 2025.

DOI PDF Code

Journal Papers

[J4] Tianzhu Han*, Chuhua Lin*, Jiashui Wang, Yaoguang Chen, Junjie Hu* and Na Ruan. "Collapsing the Miner's Dilemma: A Novel Attack Forging Incentive-Compatible Coalitions via Algorithmic Bribery."

IEEE Transactions on Consumer Electronics (TCE), 2025.

DOI PDF

[J3] Junjie Hu, Huan Yan and Chunxiang Xu. "Novel Bribery Mining Attacks: Impacts on Mining Ecosystem and the "Bribery Miner's Dilemma" in the Nakamoto-style Blockchain System."

IEEE Transactions on Dependable and Secure Computing (TDSC), 2025.

DOI PDF

[J2] Junjie Hu, Huan Yan, Na Ruan, Zhen Xiao and Jianhua Li. "The Halt Game: Sometimes Rewards Cannot Cover Expenses in the PoW-Based Blockchain."

IEEE Transactions on Information Forensics and Security (TIFS), 2025.

DOI PDF

[J1] Junjie Hu, Zhe Jiang and Chunxiang Xu. "Greedy-Mine: A Profitable Mining Attack Strategy in Bitcoin-NG."

International Journal of Intelligent Systems (IJIS), 2024.

DOI PDF

Manuscripts

[M1] Junjie Hu and Sisi Duan. "Timestamp Manipulation: Timestamp-based Nakamoto-style Blockchains Are Vulnerable."

Preprint

[M2] Junjie Hu. "Larger-scale Nakamoto-style Blockchains Offer Better Security."

Preprint

Projects

面向数据共享融合的层次式区块链安全与隐私保护关键技术研究

2025-2028 | 核心参与人员

国家自然科学基金委员会面上基金

Blockchain Security

面向多层次的区块链漏洞挖掘技术研究

2023-2025 | 核心参与人员

上海科委重点攻关专项-科技创新行动计划区块链专项

Blockchain Security

共识算法安全性分析、检测与修复系统

2024-2025 | 核心参与人员

上海科委重点攻关专项-科技创新行动计划区块链专项课题

Blockchain Consensus Security

面向分布式分散资源聚合互动的可信交易关键技术研究及应用

2023-2025 | 核心参与人员

国网总部科技课题

Blockchain Distributed

Others

Patents

  • • 基于动态评估与智能预测的贪婪链上博弈优化系统及方法, CN119539085A, 2024
  • • 基于算力动态调整的激励相容链上博弈系统及方法, CN119483899A, 2024

Standards

  • • IEEE Standard for Blockchain-Based Decentralized Storage Protocol Specification, P3220.02™/D0.1, 2025
  • • 基于有向无环图的区块链交易并行调度技术规范, T/TBI 59-2024, 2024
  • • 系统存储技术要求与评价方法, T/TBI 58-2024, 2024