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Blockchain technology has rapidly emerged to mainstream attention, while its publicly accessible, heterogeneous, massive-volume, and temporal data are reminiscent of the complex dynamics encountered during the last decade of big data.…

密码学与安全 · 计算机科学 2024-04-30 Poupak Azad , Cuneyt Gurcan Akcora , Arijit Khan

The rise of blockchain technologies has given a boost to social good projects, which are trying to exploit various characteristic features of blockchains: the quick and inexpensive transfer of cryptocurrency, the transparency of…

计算机与社会 · 计算机科学 2018-11-09 Massimo Bartoletti , Tiziana Cimoli , Livio Pompianu , Sergio Serusi

A blockchain, such as Bitcoin, is an append-only, secure, transparent, distributed ledger. A fair blockchain is expected to have healthy metrics; high honest mining power, low processing latency, i.e., low wait times for transactions and…

密码学与安全 · 计算机科学 2020-03-03 Shoeb Siddiqui , Ganesh Vanahalli , Sujit Gujar

Blockchain has received a widespread attention because of its decentralized, tamper-proof, and transparent nature. Blockchain works over the principle of distributed, secured, and shared ledger, which is used to record, and track data…

密码学与安全 · 计算机科学 2020-04-21 Muneeb Ul Hassan , Mubashir Husain Rehmani , Jinjun Chen

Decentralized blockchain platforms have enabled the secure exchange of crypto-assets without the intermediation of trusted authorities. To this purpose, these platforms rely on a peer-to-peer network of byzantine nodes, which…

密码学与安全 · 计算机科学 2023-06-22 Massimo Bartoletti , Letterio Galletta , Maurizio Murgia

The past decade has witnessed the rapid evolution in blockchain technologies, which has attracted tremendous interests from both the research communities and industries. The blockchain network was originated from the Internet financial…

密码学与安全 · 计算机科学 2019-02-20 Wenbo Wang , Dinh Thai Hoang , Peizhao Hu , Zehui Xiong , Dusit Niyato , Ping Wang , Yonggang Wen , Dong In Kim

Blockchain consensus is a state whereby each node in a network agrees on the current state of the blockchain. Existing protocols achieve consensus via a contest or voting procedure to select one node as a dictator to propose new blocks.…

理论经济学 · 经济学 2022-06-22 Joshua S. Gans , Richard Holden

In general, deep learning models use to make informed decisions immensely. Developed models are mainly based on centralized servers, which face several issues, including transparency, traceability, reliability, security, and privacy. In…

密码学与安全 · 计算机科学 2023-03-28 Asma Jodeiri Akbarfam , Sina Barazandeh , Hoda Maleki , Deepti Gupta

Blockchain has attracted significant attention in recent years due to its potential to revolutionize various industries by providing trustlessness. To comprehensively examine blockchain systems, this article presents both a macro-level…

密码学与安全 · 计算机科学 2023-04-18 Minghui Xu , Yihao Guo , Chunchi Liu , Qin Hu , Dongxiao Yu , Zehui Xiong , Dusit Niyato , Xiuzhen Cheng

Blockchain, also coined as decentralized AI, has the potential to empower AI to be more trustworthy by creating a decentralized trust of privacy, security, and audibility. However, systematic studies on the design principle of blockchain as…

密码学与安全 · 计算机科学 2023-01-18 Luyao Sunshine Zhang

Grover's algorithm confers on quantum computers a quadratic advantage over classical computers for searching in an arbitrary data set, a scenario that describes Bitcoin mining. It has previously been argued that the only side-effect of…

量子物理 · 物理学 2020-03-17 Or Sattath

In this paper, we provide a new theoretical framework of pyramid Markov processes to solve some open and fundamental problems of blockchain selfish mining under a rigorous mathematical setting. We first describe a more general model of…

密码学与安全 · 计算机科学 2021-09-14 Quan-Lin Li , Yan-Xia Chang , Xiaole Wu , Guoqing Zhang

Blockchain technology is affected by massive limitations in scalability with consequent repercussions on performance. This discussion aims at analyzing the state of the art of current available Layer II solutions to overcome these…

分布式、并行与集群计算 · 计算机科学 2021-07-26 Cosimo Sguanci , Roberto Spatafora , Andrea Mario Vergani

The cross-blockchain transaction remains one of the most challenging problems in blockchains. The root cause of the challenge lies in the nondeterministic nature of blockchains: A $n$-party transaction across multiple blockchains might be…

密码学与安全 · 计算机科学 2020-04-17 Dongfang Zhao

Blockchain technologies are facing a scalability challenge, which must be overcome to guarantee a wider adoption of the technology. This scalability issue is mostly caused by the use of consensus algorithms to guarantee the total order of…

分布式、并行与集群计算 · 计算机科学 2022-06-24 Margarita Capretto , Martín Ceresa , Antonio Fernández Anta , Antonio Russo , César Sánchez

Traditional blockchain design gives miners or validators full control over transaction ordering, i.e., they can freely choose which transactions to include or exclude, as well as in which order. While not an issue initially, the emergence…

分布式、并行与集群计算 · 计算机科学 2023-12-19 Andrei Constantinescu , Diana Ghinea , Lioba Heimbach , Zilin Wang , Roger Wattenhofer

Blockchain introduces decentralized trust in peer-to-peer networks, advancing security and democratizing systems. Yet, a unified definition for decentralization remains elusive. Our Systematization of Knowledge (SoK) seeks to bridge this…

综合经济学 · 经济学 2023-08-21 Luyao Zhang , Xinshi Ma , Yulin Liu

This paper presents a comprehensive refutation of the so-called "blockchain trilemma," a widely cited but formally ungrounded claim asserting an inherent trade-off between decentralisation, security, and scalability in blockchain protocols.…

密码学与安全 · 计算机科学 2025-07-30 Craig Wright

In this review, we evaluate the mechanisms behind the decentralized finance protocols for generating stable, passive income. Currently, such savings interest rates can be as high as 20% annually, payable in traditional currency values such…

计算机与社会 · 计算机科学 2021-08-16 Hakwan Lau , Stephen Tse

Blockchain technology has revolutionized the digital landscape, driving innovations across industries through its decentralized and transparent infrastructure. These networks are primarily categorized as public or private, based on user…

密码学与安全 · 计算机科学 2026-03-10 Mohammad Pishdar , Jawad Manzoor