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Geospatial decentralization is essential for blockchains, ensuring regulatory resilience, robustness, and fairness. We empirically analyze five major Proof of Stake (PoS) blockchains: Aptos, Avalanche, Ethereum, Solana, and Sui, revealing…

分布式、并行与集群计算 · 计算机科学 2025-11-05 Shashank Motepalli , Naman Garg , Gengrui Zhang , Hans-Arno Jacobsen

Many studies have been done to improve the performance of centrally controlled business processes and enhance the integration between different parties of these collaborations. However, the most serious issues of collaborative business…

密码学与安全 · 计算机科学 2019-04-12 Vahid Pourheidari , Sara Rouhani , Ralph deters

Blockchain has received tremendous attention in non-monetary applications including the Internet of Things (IoT) due to its salient features including decentralization, security, auditability, and anonymity. Most conventional blockchains…

密码学与安全 · 计算机科学 2020-05-20 Ali Dorri , Raja Jurdak

Blockchain technologies can enable secure computing environments among mistrusting parties. Permissioned blockchains are particularly enlightened by companies, enterprises, and government agencies due to their efficiency, customizability,…

分布式、并行与集群计算 · 计算机科学 2021-06-09 Minghui Xu , Shuo Liu , Dongxiao Yu , Xiuzhen Cheng , Shaoyong Guo , Jiguo Yu

A blockchain is a decentralized ledger where all transactions are recorded. For having a reliable blockchain and double-spending prevention, we need a decentralized consensus and agreement on a blockchain. Bitcoin uses proof-of-work (PoW).…

密码学与安全 · 计算机科学 2019-05-06 Siamak Solat

Resource-based consensus is the backbone of permissionless distributed ledger systems. The security of such protocols relies fundamentally on the level of resources actively engaged in the system. The variety of different resources (and…

密码学与安全 · 计算机科学 2022-09-08 Matthias Fitzi , Xuechao Wang , Sreeram Kannan , Aggelos Kiayias , Nikos Leonardos , Pramod Viswanath , Gerui Wang

The blockchain technology enables mutually untrusting participants to reach consensus on the state of a distributed and decentralized ledger (called a blockchain) in a permissionless setting. The consensus protocol of the blockchain imposes…

密码学与安全 · 计算机科学 2019-03-12 Chunpeng Ge , Siwei Sun , Pawel Szalachowski

In the field of energy Internet, blockchain-based distributed energy trading mode is a promising way to replace the traditional centralized trading mode. However, the current power blockchain platform based on public chain has problems such…

分布式、并行与集群计算 · 计算机科学 2023-10-12 Lianghaojie Zhou , Youquan Xian , Yipeng Yang , Jianyong Jiang , Peng Liu , Xianxian Li

The development of blockchain technology has significantly enhanced the security and transparency of personal information and transaction records. Concurrent with the advancement of blockchain technology and the emergence of the digital…

密码学与安全 · 计算机科学 2025-09-03 Zeng Zhang , Xiaoqi Li

Bitcoin uses blockchain technology and proof-of-work (PoW) mechanism where nodes spend computing resources and earn rewards in return for spending these resources. This incentive system has caused power to be significantly biased towards a…

密码学与安全 · 计算机科学 2019-09-04 Yujin Kwon , Jian Liu , Minjeong Kim , Dawn Song , Yongdae Kim

Distributed ledger systems, such as blockchains, rely on consensus protocols that commit ordered messages for processing. In practice, message ordering within these systems is often reward-driven. This raises concerns about fairness,…

分布式、并行与集群计算 · 计算机科学 2025-06-09 Zhuolun Li , Evangelos Pournaras

The continuous thriving of the Blockchain society motivates research in novel designs of schemes supporting cryptocurrencies. Previously multiple Proof-of-Deep-Learning(PoDL) consensuses have been proposed to replace hashing with useful…

机器学习 · 计算机科学 2023-08-01 Boyang Li , Bingyu Shen , Qing Lu , Taeho Jung , Yiyu Shi

Blockchain consensus mechanisms must balance security, decentralization, and efficiency while ensuring fair participation. Proof of Team Sprint (PoTS) is a cooperative consensus mechanism designed to address the energy inefficiencies and…

分布式、并行与集群计算 · 计算机科学 2025-03-26 Naoki Yonezawa

Blockchain consensus mechanisms have relied on algorithms such as Proof-of-Work (PoW) and Proof-of-Stake (PoS) to ensure network functionality and integrity. However, these approaches struggle with adaptability for decision-making where the…

多智能体系统 · 计算机科学 2026-02-10 Apurba Pokharel , Ram Dantu , Shakila Zaman , Vinh Quach , Sirisha Talapuru

Blockchain technology, which was introduced for supporting cryptocurrencies, today provides a decentralized infrastructure for general information storage and execution of algorithms, thus enabling the conversion of many applications and…

密码学与安全 · 计算机科学 2024-09-18 Nibras Abo Alzahab , Giulia Rafaiani , Massimo Battaglioni , Franco Chiaraluce , Marco Baldi

Sensor networks and Wireless Sensor Networks (WSN) are key components for the development of the Internet of Things. These networks are subject of two kinds of constraints. Adaptability by the mean of mutability and evolutivity, and…

密码学与安全 · 计算机科学 2017-06-07 Axel Moinet , Benoît Darties , Jean-Luc Baril

Despite Information and Communication Technologies (ICT) have reduced the information asymmetry and increased the degree of interorganizational collaboration, the companies participating a supply chain are less inclined to share data when…

密码学与安全 · 计算机科学 2022-06-09 Francesco Longo , Letizia Nicoletti , Antonio Padovano , Gianfranco d'Atri , Marco Forte

The introduction of Bitcoin fueled the development of blockchain-based resilient data management systems that are resilient against failures, enable federated data management, and can support data provenance. The key factor determining the…

数据库 · 计算机科学 2022-04-08 Jelle Hellings , Suyash Gupta , Sajjad Rahnama , Mohammad Sadoghi

Bitcoin is the most secure blockchain in the world, supported by the immense hash power of its Proof-of-Work miners, but consumes huge amount of energy. Proof-of-Stake chains are energy-efficient, have fast finality and accountability, but…

密码学与安全 · 计算机科学 2022-01-21 Ertem Nusret Tas , David Tse , Fisher Yu , Sreeram Kannan

The security of blockchain systems based on Proof of Work relies on mining. However, mining suffers from unstable revenue, prompting many miners to form cooperative mining pools. Most existing mining pools operate in a centralized manner,…

密码学与安全 · 计算机科学 2025-01-28 Akira Sakurai , Kazuyuki Shudo