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It is no exaggeration to say that since the introduction of Bitcoin, blockchains have become a disruptive technology that has shaken the world. However, the rising popularity of the paradigm has led to a flurry of proposals addressing…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-08-23 Christopher Natoli , Jiangshan Yu , Vincent Gramoli , Paulo Esteves-Verissimo

Currently there exist many blockchains with weak trust guarantees, limiting applications and participation. Existing solutions to boost the trust using a stronger blockchain, e.g., via checkpointing, requires the weaker blockchain to give…

Cryptography and Security · Computer Science 2023-09-22 Peiyao Sheng , Xuechao Wang , Sreeram Kannan , Kartik Nayak , Pramod Viswanath

Parallel scaling has emerged as a powerful paradigm to enhance reasoning capabilities in large language models (LLMs) by generating multiple Chain-of-Thought (CoT) traces simultaneously. However, this approach introduces significant…

Computation and Language · Computer Science 2026-04-17 Shangqing Tu , Yaxuan Li , Yushi Bai , Lei Hou , Juanzi Li

In recent years, blockchain technology has received unparalleled attention from academia, industry, and governments all around the world. It is considered a technological breakthrough anticipated to disrupt several application domains. This…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-02-10 Md Sadek Ferdous , Mohammad Jabed Morshed Chowdhury , Mohammad A. Hoque , Alan Colman

This paper presents Balloon, a scalable blockchain consensus protocol which could dynamically adapt its performance to the overall computation power change. Balloon is based on a parallel chain architecture combined with a greedy heaviest…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-04-11 Yan Huang , Yu Zhou , Tao Zhu , Yuzhuang Xu , Hehe Wang , Weihuai Liu , Jingxiu Hu , Pushan Xiao

In this paper we revisit some major orthodoxies which lie at the heart of the bitcoin crypto currency and its numerous clones. In particular we look at The Longest Chain Rule, the monetary supply policies and the exact mechanisms which…

Cryptography and Security · Computer Science 2014-12-11 Nicolas T. Courtois

Blockchain is a distributed ledger with wide applications. Due to the increasing storage requirement for blockchains, the computation can be afforded by only a few miners. Sharding has been proposed to scale blockchains so that storage and…

Cryptography and Security · Computer Science 2020-11-13 Divija Swetha Gadiraju , V. Lalitha , Vaneet Aggarwal

The surging interest in blockchain technology has revitalized the search for effective Byzantine consensus schemes. In particular, the blockchain community has been looking for ways to effectively integrate traditional Byzantine…

Cryptography and Security · Computer Science 2018-11-15 Jian Liu , Wenting Li , Ghassan O. Karame , N. Asokan

A new variation of blockchain proof of work algorithm is proposed to incentivize the timely execution of image processing algorithms. A sample image processing algorithm is proposed to determine interesting images using analysis of the…

Cryptography and Security · Computer Science 2017-07-17 Jake Billings

We consider access control for IoT systems that involves shared accesses to the IoT devices as well as their data. Since IoT devices are dispersed all over the edge of the Internet, traditional centralized access control has problems.…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-07-15 Yongtao Huang , I-Ling Yen , Farokh Bastani

Blockchain interoperability is increasingly recognized as the centerpiece for robust interactions among decentralized services. Blockchain ledgers are generally tamper-proof and thus enforce non-repudiation for transactions recorded within…

Cryptography and Security · Computer Science 2025-11-21 Tirthankar Sengupta , Bishakh Chandra Ghosh , Sandip Chakraborty , Shamik Sural

The constantly growing size of blockchains becomes a challenge with the increasing usage. Especially the storage of unwanted data in a blockchain is an issue, because it cannot be removed naturally. In order to counteract this problem, we…

Cryptography and Security · Computer Science 2021-01-15 Peter Hillmann , Marcus Knüpfer , Erik Heiland , Andreas Karcher

Blockchain sharding has emerged as a promising solution to the scalability challenges in traditional blockchain systems by partitioning the network into smaller, manageable subsets called shards. Despite its potential, existing sharding…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-12-19 Ao Liu , Jing Chen , Kun He , Ruiying Du , Jiahua Xu , Cong Wu , Yebo Feng , Teng Li , Jianfeng Ma

Full nodes, which synchronize the entire blockchain history and independently validate all the blocks, form the backbone of any blockchain network by playing a vital role in ensuring security properties. On the other hand, a user running a…

Cryptography and Security · Computer Science 2019-07-01 Swanand Kadhe , Jichan Chung , Kannan Ramchandran

The increasing adoption of cryptocurrencies has significantly amplified the resource requirements for operating full nodes, creating substantial barriers to entry. Unlike miners, who are financially incentivized through block rewards and…

Cryptography and Security · Computer Science 2025-04-24 Hina Binte Haq , Syed Taha Ali , Asad Salman , Patrick McCorry , Siamak F. Shahandashti

It is a common narrative that blockchains are immutable and so it is technically impossible to erase data stored on them. For legal and ethical reasons, however, individuals and organizations might be compelled to erase locally stored data,…

Cryptography and Security · Computer Science 2020-02-20 Martin Florian , Sophie Beaucamp , Sebastian Henningsen , Björn Scheuermann

Recurrent neural networks (RNNs) have been widely adopted in temporal sequence analysis, where realtime performance is often in demand. However, RNNs suffer from heavy computational workload as the model often comes with large weight…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-05-13 Runbin Shi , Peiyan Dong , Tong Geng , Yuhao Ding , Xiaolong Ma , Hayden K. -H. So , Martin Herbordt , Ang Li , Yanzhi Wang

Large-scale pre-trained models have been remarkably successful in resolving downstream tasks. Nonetheless, deploying these models on low-capability devices still requires an effective approach, such as model pruning. However, pruning the…

Computer Vision and Pattern Recognition · Computer Science 2023-07-11 Haiyan Zhao , Guodong Long

The popularization of blockchains leads to a resurgence of interest in Byzantine Fault-Tolerant (BFT) state machine replication protocols. However, much of the work on this topic focuses on the underlying consensus protocols, with emphasis…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-05-01 Alysson Bessani , Eduardo Alchieri , João Sousa , André Oliveira , Fernando Pedone

Increasing popularity of trading digital assets can lead to significant delays in Blockchain networks when processing transactions. When transaction fees become miners' primary revenue, an imbalance in reward may lead to miners adopting…

Cryptography and Security · Computer Science 2023-04-03 Gerui Zhang , Xiongfei Zhao , Yain-Whar Si