Blockchain-Research and Applications最新文献_第9页

Conditions for advantageous quantum Bitcoin mining 有利的量子比特币挖矿条件

IF 5.6 3区计算机科学

Blockchain-Research and Applications Pub Date : 2023-09-01 DOI: 10.1016/j.bcra.2023.100141

Robert R. Nerem , Daya R. Gaur

{"title":"Conditions for advantageous quantum Bitcoin mining","authors":"Robert R. Nerem , Daya R. Gaur","doi":"10.1016/j.bcra.2023.100141","DOIUrl":"https://doi.org/10.1016/j.bcra.2023.100141","url":null,"abstract":"<div><p>Our aim is to determine the conditions for quantum computing technology to give rise to the security risks associated with quantum Bitcoin mining. Specifically, we determine the speed and energy efficiency a quantum computer needs to offer an advantage over classical mining. We analyze the setting in which the Bitcoin network is entirely classical except for a single quantum miner with a small hash rate compared to the network. We develop a closed-form approximation for the probability that the quantum miner successfully mines a block, with this probability dependent on the number of Grover iterations the quantum miner applies before making a measurement. Next, we show that for a quantum miner that is “peaceful”, this success probability is maximized if the quantum miner applies Grover iterations for 16 min before measuring, which is surprising, as the network mines blocks every 10 min on average. Using this optimal mining procedure, we show that the quantum miner outperforms a classical computer in efficiency (cost per block) if the condition <em>Q</em> < <em>Crb</em> is satisfied, where <em>Q</em> is the cost of a Grover iteration, <em>C</em> is the cost of a classical hash, <em>r</em> is the quantum miner's speed in Grover iterations per second, and <em>b</em> is a factor that attains its maximum if the quantum miner uses our optimal mining procedure. This condition lays the foundation for determining when quantum mining and the known security risks associated with it will arise.</p></div>","PeriodicalId":53141,"journal":{"name":"Blockchain-Research and Applications","volume":"4 3","pages":"Article 100141"},"PeriodicalIF":5.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49809824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Identifying malicious accounts in blockchains using domain names and associated temporal properties 使用域名和相关的临时属性识别区块链中的恶意帐户

IF 5.6 3区计算机科学

Blockchain-Research and Applications Pub Date : 2023-09-01 DOI: 10.1016/j.bcra.2023.100136

Rohit Kumar Sachan , Rachit Agarwal , Sandeep Kumar Shukla

引用次数: 2

The ins and outs of decentralized autonomous organizations (DAOs) unraveling the definitions, characteristics, and emerging developments of DAOs 分散自治组织(dao)的来龙去脉，揭示了dao的定义、特征和新兴发展

IF 5.6 3区计算机科学

Blockchain-Research and Applications Pub Date : 2023-09-01 DOI: 10.1016/j.bcra.2023.100143

Olivier Rikken , Marijn Janssen , Zenlin Kwee

{"title":"The ins and outs of decentralized autonomous organizations (DAOs) unraveling the definitions, characteristics, and emerging developments of DAOs","authors":"Olivier Rikken , Marijn Janssen , Zenlin Kwee","doi":"10.1016/j.bcra.2023.100143","DOIUrl":"10.1016/j.bcra.2023.100143","url":null,"abstract":"<div><p>Despite the increase in the number of blockchain-based Decentralized Autonomous Organizations (DAOs), there is no consensus on what constitutes a DAO. This paper provides an in-depth study of DAOs by analyzing their definitions, characteristics, and emerging developments. Existing definitions in the literature hardly recognize common functionalities and intermingle coded DAOs, DAO deployment platforms, and blockchain DAOs. We developed a comprehensive DAO definition by reviewing the literature and empirically analyzing 1,859 DAOs. The findings show that many DAOs were inactive and that a threshold of 20 tokenholders is a tipping point for DAOs to survive over time and maintain sustained levels of activity. Finally, based on an empirical analysis of 9,845 perceived DAOs, we identified the emerging development of off-chain voting. This emerging development challenges the autonomous nature of DAOs. We recommend further research to investigate the effect of governance structures on their long-term sustainability and viability for both on-chain and off-chain DAOs.</p></div>","PeriodicalId":53141,"journal":{"name":"Blockchain-Research and Applications","volume":"4 3","pages":"Article 100143"},"PeriodicalIF":5.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42967823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Security challenges and defense approaches for blockchain-based services from a full-stack architecture perspective 从全栈架构的角度看基于区块链的服务的安全挑战和防御方法

IF 5.6 3区计算机科学

Blockchain-Research and Applications Pub Date : 2023-09-01 DOI: 10.1016/j.bcra.2023.100135

Hongsong Chen , Xietian Luo , Lei Shi , Yongrui Cao , Yongpeng Zhang

{"title":"Security challenges and defense approaches for blockchain-based services from a full-stack architecture perspective","authors":"Hongsong Chen , Xietian Luo , Lei Shi , Yongrui Cao , Yongpeng Zhang","doi":"10.1016/j.bcra.2023.100135","DOIUrl":"10.1016/j.bcra.2023.100135","url":null,"abstract":"<div><p>As an advantageous technique and service, the blockchain has shown great development and application prospects. However, its security has also met great challenges, and many security vulnerabilities and attack issues in blockchain-based services have emerged. Recently, security issues of blockchain have attracted extensive attention. However, there is still a lack of blockchain security research from a full-stack architecture perspective, as well as representative quantitative experimental reproduction and analysis. We aim to provide a security architecture to solve security risks in blockchain services from a full-stack architecture perspective. Meanwhile, we propose a formal definition of the full-stack security architecture for blockchain-based services, and we also propose a formal expression of security issues and defense solutions from a full-stack security perspective. We use ConCert to conduct a smart contract formal verification experiment by property-based testing. The security vulnerabilities of blockchain services in the Common Vulnerabilities and Exposures (CVE) and China Nation Vulnerability Database (CNVD) are selected and enumerated. Additionally, three real contract-layer real attack events are reproduced by an experimental approach. Using Alibaba's blockchain services and Identity Mixer in Hyperledger Fabric as a case study, the security problems and defense techniques are analyzed and researched. At last, the future research directions are proposed.</p></div>","PeriodicalId":53141,"journal":{"name":"Blockchain-Research and Applications","volume":"4 3","pages":"Article 100135"},"PeriodicalIF":5.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47364378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Smart contract-enabled consortium blockchains for the control of supply chain information distortion 智能合约支持联盟区块链控制供应链信息失真

IF 5.6 3区计算机科学

Blockchain-Research and Applications Pub Date : 2023-09-01 DOI: 10.1016/j.bcra.2023.100134

Corban Allenbrand

引用次数: 0

Digital assets rights management through smart legal contracts and smart contracts 通过智能法律合同和智能合约进行数字资产权益管理

IF 5.6 3区计算机科学

Blockchain-Research and Applications Pub Date : 2023-09-01 DOI: 10.1016/j.bcra.2023.100142

Enrico Ferro , Marco Saltarella , Domenico Rotondi , Marco Giovanelli , Giacomo Corrias , Roberto Moncada , Andrea Cavallaro , Alfredo Favenza

{"title":"Digital assets rights management through smart legal contracts and smart contracts","authors":"Enrico Ferro , Marco Saltarella , Domenico Rotondi , Marco Giovanelli , Giacomo Corrias , Roberto Moncada , Andrea Cavallaro , Alfredo Favenza","doi":"10.1016/j.bcra.2023.100142","DOIUrl":"10.1016/j.bcra.2023.100142","url":null,"abstract":"<div><p>Intellectual property rights (IPR) management needs to evolve in a digital world where not only companies but also many independent content creators contribute to our culture with their art, music, and videos. In this respect, blockchain has recently emerged as a promising infrastructure, providing a trustworthy and immutable environment through the use of smart contracts, which may enable more agile management of digital rights and streamline royalty payments. However, no widespread consensus has been reached on the ability of this technology to adequately manage and transfer IPR. This paper presents an innovative approach to digital rights management developed within the scope of an international research endeavour co-financed by the European Commission named MediaVerse. The approach proposes the combined usage of smart legal contracts and blockchain smart contracts to take care of the legally binding contractual aspects of IPR and, at the same time, the need for notarization, rights transfer, and royalty payments. The work being conducted represents a contribution to advancing the current literature on IPR management that may lead to an improved and fairer monetization process for content creators as a means of individual empowerment.</p></div>","PeriodicalId":53141,"journal":{"name":"Blockchain-Research and Applications","volume":"4 3","pages":"Article 100142"},"PeriodicalIF":5.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42901488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The cost of privacy on blockchain: A study on sealed-bid auctions 区块链上的隐私成本：密封竞价拍卖研究

IF 5.6 3区计算机科学

Blockchain-Research and Applications Pub Date : 2023-09-01 DOI: 10.1016/j.bcra.2023.100133

Menelaos Kokaras , Magda Foti

{"title":"The cost of privacy on blockchain: A study on sealed-bid auctions","authors":"Menelaos Kokaras , Magda Foti","doi":"10.1016/j.bcra.2023.100133","DOIUrl":"10.1016/j.bcra.2023.100133","url":null,"abstract":"<div><p>In order to preserve privacy in a blockchain ecosystem, the main objective is to keep a transaction's data private, such as the sender, the receiver, and the amount transferred. The current work studies the cryptographic tools commonly used to achieve this type of privacy, primarily focusing on the Ethereum blockchain. Such tools usually require many computational and storage resources, leading to additional fees. An anonymous auction protocol was developed as a case study to explore these costs, where hiding the identity and the amount of the bids utilizes a variety of cryptographic primitives. The proposed implementation was compared against three sealed-bid auction protocols, which utilize similar cryptographic tools for preserving privacy throughout the auction process. The results show that providing an additional level of anonymity, such as hiding someone's identity, can increase the gas cost significantly, up to 2.5 times, depending on the choice of the cryptographic tools, which determine the usage of the blockchain's storage and computational resources. By adjusting the level of decentralization on the application level by moving some operations off-chain and maintaining the role of the auctioneer, we show that we can maintain anonymity while reducing the gas cost by 40%.</p></div>","PeriodicalId":53141,"journal":{"name":"Blockchain-Research and Applications","volume":"4 3","pages":"Article 100133"},"PeriodicalIF":5.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45589467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

ADEFGuard: Anomaly detection framework based on Ethereum smart contracts behaviours ADEFGuard:基于以太坊智能合约行为的异常检测框架

IF 5.6 3区计算机科学

Blockchain-Research and Applications Pub Date : 2023-09-01 DOI: 10.1016/j.bcra.2023.100148

Malaw Ndiaye , Thierno Ahmadou Diallo , Karim Konate

{"title":"ADEFGuard: Anomaly detection framework based on Ethereum smart contracts behaviours","authors":"Malaw Ndiaye , Thierno Ahmadou Diallo , Karim Konate","doi":"10.1016/j.bcra.2023.100148","DOIUrl":"10.1016/j.bcra.2023.100148","url":null,"abstract":"<div><p>Smart contracts are the building blocks of blockchain systems that enable automated peer-to-peer transactions and decentralized services. Smart contracts certainly provide a powerful functional surplus for maintaining the consistency of transactions in applications governed by blockchain technology. Smart contracts have become lucrative and profitable targets for attackers because they can hold a large amount of money. Formal verification and symbolic analysis have been employed to combat these destructive scams by analysing the codes and function calls, yet each scam's vulnerability should be discreetly predefined. In this work, we introduce ADEFGuard, a new anomaly detection framework based on the behaviour of smart contracts, as a new feature. We design a learning and monitoring module to determine fraudulent smart contract behaviours.</p><p>Our framework is advantageous over basic algorithms in three aspects. First, ADEFGuard provides a unified solution to different genres of scams, relieving the need for code analysis skills. Second, ADEFGuard's inference is orders of magnitude faster than code analysis. Third, the experimental results show that ADEFGuard achieves high accuracy (85%), precision (75%), and recall (90%) for malicious contracts and is potentially useful in detecting new malicious behaviours of smart contracts.</p></div>","PeriodicalId":53141,"journal":{"name":"Blockchain-Research and Applications","volume":"4 3","pages":"Article 100148"},"PeriodicalIF":5.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43158165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the impact of network factors and Twitter data on Ethereum's popularity 评估网络因素和推特数据对以太坊受欢迎程度的影响

IF 5.6 3区计算机科学

Blockchain-Research and Applications Pub Date : 2023-09-01 DOI: 10.1016/j.bcra.2023.100150

Sarah Bouraga

{"title":"Assessing the impact of network factors and Twitter data on Ethereum's popularity","authors":"Sarah Bouraga","doi":"10.1016/j.bcra.2023.100150","DOIUrl":"10.1016/j.bcra.2023.100150","url":null,"abstract":"<div><p>In March 2021, we witnessed a surge in Bitcoin price. The cause seemed to be a tweet by Elon Musk. Are other blockchains as sensitive to social media as Bitcoin? And more precisely, could Ethereum's popularity be explained using social media data?</p><p>This work aims to explore the determinants of Ethereum's popularity. We use both data from Etherscan to retrieve the relevant historic Ethereum factors and Twitter data. Our sample consists of data ranging from 2015 to 2022. We use Ordinary Least Squares to assess the relationship between these factors (Ethereum characteristics and Twitter data) and Ethereum's popularity.</p><p>Our findings show that Ethereum's popularity—translated here by the number of daily new addresses—is related to the following elements: the Ether (ETH) price, the transaction fees, and the polarity of tweets related to Ethereum.</p><p>The results could have multiple practical implications for both researchers and practitioners. First of all, we believe that it will enable readers to better understand the technology of Ethereum and its stake. Secondly, it will help the community identify pointers for anticipating or explaining the popularity of existing or future platforms. And finally, the results could help in understanding the factors facilitating the design of future platforms.</p></div>","PeriodicalId":53141,"journal":{"name":"Blockchain-Research and Applications","volume":"4 3","pages":"Article 100150"},"PeriodicalIF":5.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48089163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A comprehensive research framework for Bitcoin’s energy use: Fundamentals, economic rationale, and a pinch of thermodynamics 比特币能源使用的综合研究框架:基本面、经济原理和一点热力学

IF 5.6 3区计算机科学

Blockchain-Research and Applications Pub Date : 2023-09-01 DOI: 10.1016/j.bcra.2023.100149

Horst Treiblmaier

引用次数: 2