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Since the inception of Bitcoin, cryptocurrencies and the underlying blockchain technology have attracted an increasing interest from both academia and industry. Among various core components, consensus protocol is the defining technology…

Cryptography and Security · Computer Science 2020-02-21 Yang Xiao , Ning Zhang , Wenjing Lou , Y. Thomas Hou

Blockchain is a decentralized transaction and data management solution, the technological weapon-of-choice behind the success of Bitcoin and other cryptocurrencies. As the number and variety of existing blockchain implementations continues…

Cryptography and Security · Computer Science 2018-12-24 Martin Garriga , Maximiliano Arias , Alan De Renzis

Parked-assisted vehicular edge computing (PVEC) fully leverages communication and computing resources of parking vehicles, thereby significantly alleviating the pressure on edge servers. However, resource sharing and trading for vehicular…

Cryptography and Security · Computer Science 2024-11-19 Guoling Liang , Chunhai Li , Feng Zhao , Chuan Zhang , Liehuang Zhu

With the ubiquitous computing of providing services and applications at anywhere and anytime, cloud computing is the best option as it offers flexible and pay-per-use based services to its customers. Nevertheless, security and privacy are…

Cryptography and Security · Computer Science 2017-11-09 Nour Moustafa , Gideon Creech , Elena Sitnikova , Marwa Keshk

Consensus algorithms are central to blockchain technology and an emerging research area. In this paper, we begin with an overview of the different types and architectures of blockchain networks. Then, with a focus on consortium blockchains,…

Data Structures and Algorithms · Computer Science 2023-09-28 Wei Yao , Fadi P. Deek , Renita Murimi , Guiling Wang

Recent advances in foundation models have established scaling laws that enable the development of larger models to achieve enhanced performance, motivating extensive research into large-scale recommendation models. However, simply…

Traditional metrics like BLEU and BERTScore fail to capture semantic fidelity in generative text-to-text tasks. We adapt the Cross-Examination Framework (CEF) for a reference-free, multi-dimensional evaluation by treating the source and…

Computation and Language · Computer Science 2026-01-28 Tathagata Raha , Clement Christophe , Nada Saadi , Hamza A Javed , Marco AF Pimentel , Ronnie Rajan , Praveenkumar Kanithi

The current crisis, at the time of writing, has had a profound impact on the financial world, introducing the need for creative approaches to revitalising the economy at the micro level as well as the macro level. In this informal analysis…

Computers and Society · Computer Science 2020-08-04 Geoffrey Goodell , Hazem Danny Al-Nakib , Paolo Tasca

Machine learning algorithms in socially sensitive domains (e.g., credit decisions) often focus on equalizing predictive outcomes. However, satisfying these metrics does not guarantee that models use the same reasoning for different groups.…

Machine Learning · Computer Science 2026-05-14 Gideon Popoola , John Sheppard

Ethereum smart contracts are public, immutable and distributed and, as such, they are prone to vulnerabilities sourcing from programming mistakes of developers. This paper presents SAFEVM, a verification tool for Ethereum smart contracts…

Programming Languages · Computer Science 2019-06-13 Elvira Albert , Jesús Correas , Pablo Gordillo , Guillermo Román-Díez , Albert Rubio

Decentralization is widely recognized as a crucial characteristic of blockchains that enables them to resist malicious attacks such as the 51% attack and the takeover attack. Prior research has primarily examined decentralization in…

Cryptography and Security · Computer Science 2023-06-12 Chao Li , Balaji Palanisamy , Runhua Xu , Li Duan

Security is becoming a pivotal point in cloud platforms. Several divisions, such as business organisations, health care, government, etc., have experienced cyber-attacks on their infrastructures. This research focuses on security issues…

Cryptography and Security · Computer Science 2025-10-21 Sabbir M Saleh , Nazim Madhavji , John Steinbacher

Stablecoins have emerged as a significant component of global financial infrastructure, with aggregate market capitalization surpassing USD250 billion in 2025. Their increasing integration into payment and settlement systems has…

Risk Management · Quantitative Finance 2025-10-14 Hongzhe Wen , R. S. M. Lau

The last decade has sparked several valiant efforts in deductive verification of distributed agreement protocols such as consensus and leader election. Oddly, there have been far fewer verification efforts that go beyond the core protocols…

Programming Languages · Computer Science 2021-09-14 Nouraldin Jaber , Christopher Wagner , Swen Jacobs , Milind Kulkarni , Roopsha Samanta

The security of blockchain systems is fundamentally based on the decentralized consensus in which the majority of parties behave honestly, and the content verification process is essential to maintaining the robustness of blockchain…

Cryptography and Security · Computer Science 2025-08-21 Zishuo Zhao , Xi Chen , Yuan Zhou

Blockchain is a decentralised, immutable ledger technology that has been widely adopted in many sectors for various applications such as cryptocurrencies, smart contracts and supply chain management. Distributed consensus is a fundamental…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-08-05 Siamak Abdi , Giuseppe Di Fatta , Atta Badii , Giancarlo Fortino

Blockchain technology enables stakeholders to conduct trusted data sharing and exchange without a trusted centralized institution. These features make blockchain applications attractive to enhance trustworthiness in very different contexts.…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-07-18 Xiaohui Zhang , Mingying Xue , Xianghua Miao

The use of digital money has become increasingly popular, but it comes with certain drawbacks. For instance, it can be challenging to make payments during power outages or internet failures. Additionally, some groups may find it difficult…

Human-Computer Interaction · Computer Science 2023-05-02 Chenhang Zhou , Yu Chen , Roger Wattenhofer , Ye Wang

Blockchain is a distributed ledger technology that has applications in many domains such as cryptocurrency, smart contracts, supply chain management, and many others. Distributed consensus is a fundamental component of blockchain systems…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-08-05 Siamak Abdi , Giuseppe Di Fatta , Atta Badii , Giancarlo Fortino

Set reconciliation is a fundamental task in distributed systems, particularly in blockchain networks, where it enables synchronization of transaction pools among peers and facilitates block dissemination. Traditional set reconciliation…

Networking and Internet Architecture · Computer Science 2025-04-14 Tomer Keniagin , Eitan Yaakobi , Ori Rottenstreich