67 citations · 225 across the 17 of their papers we have counts for
10 papers · 1 filter
FTX Collapse: A Ponzi Story
Shange Fu, Qin Wang, Jiangshan Yu +1
FTX used to be the third-largest centralised exchange (CEX) in crypto markets, managing over $10B in daily trading volume before its downfall. Such a giant, however, failed to avo…
Leveraging the Verifier's Dilemma to Double Spend in Bitcoin
Tong Cao, Jérémie Decouchant, Jiangshan Yu
We describe and analyze perishing mining, a novel block-withholding mining strategy that lures profit-driven miners away from doing useful work on the public chain by releasing blo…
A Referable NFT Scheme
Qin Wang, Guangsheng Yu, Shange Fu +3
Existing NFTs confront restrictions of \textit{one-time incentive} and \textit{product isolation}. Creators cannot obtain benefits once having sold their NFT products due to the la…
Verifiable Observation of Permissioned Ledgers
Ermyas Abebe, Yining Hu, Allison Irvin +4
Permissioned ledger technologies have gained significant traction over the last few years. For practical reasons, their applications have focused on transforming narrowly scoped us…
SoK: Diving into DAG-based Blockchain Systems
Qin Wang, Jiangshan Yu, Shiping Chen +1
Blockchain plays an important role in cryptocurrency markets and technology services. However, limitations on high latency and low scalability retard their adoptions and applicatio…
Characterizing Erasable Accounts in Ethereum
Xiaoqi Li, Ting Chen, Xiapu Luo +1
Being the most popular permissionless blockchain that supports smart contracts, Ethereum allows any user to create accounts on it. However, not all accounts matter. For example, th…
How to Democratise and Protect AI: Fair and Differentially Private Decentralised Deep Learning
Lingjuan Lyu, Yitong Li, Karthik Nandakumar +2
This paper firstly considers the research problem of fairness in collaborative deep learning, while ensuring privacy. A novel reputation system is proposed through digital tokens a…
Security Analysis Methods on Ethereum Smart Contract Vulnerabilities: A Survey
Purathani Praitheeshan, Lei Pan, Jiangshan Yu +2
Smart contracts are software programs featuring both traditional applications and distributed data storage on blockchains. Ethereum is a prominent blockchain platform with the supp…
Towards Fair and Privacy-Preserving Federated Deep Models
Lingjuan Lyu, Jiangshan Yu, Karthik Nandakumar +5
The current standalone deep learning framework tends to result in overfitting and low utility. This problem can be addressed by either a centralized framework that deploys a centra…
DTKI: a new formalized PKI with no trusted parties
Jiangshan Yu, Vincent Cheval, Mark Ryan
The security of public key validation protocols for web-based applications has recently attracted attention because of weaknesses in the certificate authority model, and consequent…