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Authenticated digital currency Redaction with Stronger Privacy and Usability

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China Communications 2024年第6期21卷 219-236页

作者： Tang Yongli Li Ying Zhao Zongqu Li Yuanhong Guo Rui School of Computer Science and Technology Henan Polytechnic UniversityJiaozuo 454000China School of Cyberspace Security Xi’an University of Posts and TelecommunicationsXi’an 710121China

With the promotion of digital currency,how to effectively solve the authenticity,privacy and usability of digital currency issuance has been a key *** signature scheme(RSS)can provide the verification of the integrity and source of the generated sub-documents and solve the privacy problem in digital currency by removing blocks from the signed ***,it has not realized the consolidation of signed documents,which can not solve the problem of merging two digital ***,we introduce the concept of weight based on the threshold secret sharing scheme(TSSS)and present a redactable signature scheme with merge algorithm(RSS-MA)using the quasi-commutative *** scheme can reduce the communication overhead by utilizing the merge algorithm when transmitting multiple digital currency ***,this can effectively hide the scale of users’private monetary assets and the number of transactions between *** meeting the three properties of digital currency issuance,in order to ensure the availability of digital currency after redacting,editors shall not remove the relevant identification information block form digital ***,our security proof and the analysis of efficiency show that RSS-MA greatly improves the communication and computation efficiency when transmitting multiple signatures.

关键词： authenticity verification digital currency privacy protection RSS-MA TSSS usability

On the Legal Attributes of digital currency

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Social Sciences in China 2021年第2期42卷 123-141页

作者： Zhang Meichang the School of Foreign Studies China University of Political Science and Law

digital currency has been widely used ever since the concept of Bitcoin was *** uses blockchains as its underlying technical support and is characterized by decentralization,programmability,and security verification based on the principles of *** speaking,theories on the legal attributes of digital currency regard it either as nonmonetary property or as *** former theory can be subdivided into theories on digital currency as commodity,as securities or as *** of these subdivisions present insurmountable theoretical difficulties and practical *** we return to the substantive nature of currency as a generally accepted accounting symbol,it can be seen that currency issuance by the state or a private bank is simply a means of building currency credit rather than a necessary *** traditional currency,digital currency relies on blockchain technology to complete the construction of decentralized currency *** has resulted in a new theory of currency based on the theory of digital *** the one hand,it offers a jurisprudential foundation for the construction of the quasi-currency attributes of digital currency;on the other,it provides a theoretical basis for the gradual improvement of digital currency *** can first determine the legal attributes of digital currency as a quasi-currency and then confirm its legal position when the time is *** need to confirm the legal status of digital currency as a quasi-currency through legislation,and use this as a logical starting point for the construction of a series of legal systems for digital currency as a *** currency can easily be used as a tool for crime or for evading financial controls;therefore,we need to determine a regulatory body and formulate regulatory rules.

关键词： digital currency Bitcoin legal attributes regulatory system financial regulation

The Impact of Financial Technology and digital currency on Traditional Financial Industry

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Journal of Electronic Research and Application 2024年第6期8卷 52-57页

作者： Chengkun Liu School of Computer and Artificial Intelligence Beijing Technology and Business UniversityBeijing 102445China

To harness the potential of financial technology and digital currency and enhance the competitiveness of the traditional financial industry,this paper briefly elucidates the concepts of financial technology and digital currency,along with their current development ***,it analyzes the impact of financial technology and digital currency on the traditional financial industry,aiming to enrich research outcomes in this field and propel the development of traditional financial institutions in China.

关键词： Financial technology digital currency Traditional finance

Design of a digital currency information system based on the UnionPay network

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Frontiers of Engineering Management 2020年第4期7卷 471-484页

作者： Hongfeng CHAI Quan SUN Yu ZHOU Tao ZHU Fudan University Shanghai 200433China China UnionPay Co. Ltd.Shanghai 201201China

digital currency can reduce the issuance and circulation costs of physical cash and improve the convenience and transparency of economic ***,digital currency has received widespread attention from central banks in recent *** an important financial infrastructure,the UnionPay network is expected to provide effective support for the construction and operation of a digital currency *** study uses the UnionPay network as basis to systematically propose a digital currency information system from three aspects,namely,digital currency account opening,exchange,and use,and further expounds on the operation mechanism of a digital currency information system *** study also discusses how to apply blockchain technology to digital currency,such as using distributed ledger for digital currency confirmation and registration and using blockchain-enabled smart contracts to realize the forward guidance function of the central bank digital ***,the current research introduces the value of using the UnionPay network to support the operation of a digital currency information system and its technical challenges,aiming to provide beneficial guidance and reference for future research effort.

关键词： UnionPay network digital currency information system blockchain smart contracts

Fintech,digital currency,and the Restructuring of the Global Financial System

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China Economic Transition 2022年第2期5卷 262-276页

作者： GAO Hongmin LI Gang Institute of World Economy Shanghai Academy of Social SciencesShanghai 200020China

Financial technology(fintech)and digital currency are irreversibly reshaping the global financial *** the analysis of the development of fintech and digital currency,and the resulting major influences on the global financial system,this paper discusses the impact of issuing legal digital currency on a monetary base and money multiplier,and the possible influences on central banks’monetary *** shows that the integration of artificial intelligence,big data,cloud computing,the Internet of Things and other information technologies with traditional finance will greatly enhance the efficiency of financial service,and help to identify,quantify and minimize financial risks,and reinforce the financial agglomeration effect of traditional financial *** the same time,the development of digital currency entirely based on blockchain technology may weaken the financial agglomeration functions of traditional financial *** development of private digital currency based on blockchain is unstoppable,thus the legal digital currency of the People’s Bank of China will play an important role in restructuring the global currency *** advantage of the internet financial market,China should strengthen its infrastructure in fintech,promote integrated innovation,increase research spending on core technology,and tighten top-level design and regulation,so as to advance a faster development of fintech and digital currency.

关键词： fintech digital currency global financial system blockchain technology

A new proof-of-work mechanism for bitcoin

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Financial Innovation 2016年第1期2卷 387-394页

作者： Ning Shi School of Business Sun Yat-sen UniversityGuangzhouChina

Background:Bitcoin system,when more than 51%computing power is controlled by a single node,the block chain can be distorted *** is called 51%attack which is a well-known potential risk that could destroy the Bitcoin ***:The paper proves that under the current proof-of-work mechanism,computing power eventually will be centralized at a single node if miners are rational ***:The paper propose a new proof-of-work mechanism that improves decentralization and reduces the risk of 51%attack without increasing the risk of Sybil ***:This new mechanism introduces a series of principles such as Career open to all talents,without distinction of birth,Distribution according to labor and All Men are created equal.

关键词： digital currency Consensus mechanism Bitcoin proof-of-work

Impact of COVID-19 effective reproductive rate on cryptocurrency

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Financial Innovation 2022年第1期8卷 1432-1458页

作者： Marcel C.Minutolo Werner Kristjanpoller Prakash Dheeriya Robert Morris University 6001 University BlvdMoon TownshipPA 15108USA Departamento de Industrias Universidad Técnica Federico Santa MaríaAv.España 1680ValparaísoChile California State University Dominguez Hills 1000 E Victoria StCarsonCA 90747USA

The importance of cryptocurrency to the global economy is increasing steadily,which is evidenced by a total market capitalization of over$2.18T as of December 17,2021,according to ***(Coin,2021).Cryptocurrencies are too confusing for laymen and require more *** this study,we analyze the impact that the effective reproductive rate,an epidemiological indicator of the spread of COVID-19,has on both the price and trading volume of eight of the largest digital currencies—Bitcoin,Ethereum,Tether,Ripple,Litecoin,Bitcoin Cash,Cardano,and *** hypothesize that as the rate of spread decreases,the trading price of the digital currency *** Generalized Autoregressive Conditional Heteroskedasticity models,we find that the impact of the spread of COVID-19 on the price and trading volume of cryptocurrencies varies by currency and *** findings offer novel insight into the cryptocurrency market and the impact that the viral spread of COVID-19 has on the value of the major cryptocurrencies.

关键词： COVID-19 Cryptocurrency Bitcoin GARCH digital currency Fintech

Is money going digital? An alternative perspective on the current hype

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Financial Innovation 2018年第1期4卷 216-221页

作者： Daniel Gersten Reiss Department of Banking Operations and Payments System’s Research Division SBS quadra 3Bloco BEdificio-Sede15 andarBrasiliaDF 70074-900Brazil

Current financial discourse suggests the imminence of a cashless society,a concept that arose from the global popularization of digital financial services and the development of technologies with the potential for application in financial ***,claims about the impending obsolescence of paper money are neither disruptive nor a ***,this paper argues that the conversion of money from paper to bits has been a gradual,adaptive process,and that money is already ***,in this paper we propose that the statuses of electronic money(e-money)and banknotes have switched in the view of monetary authorities.

关键词： digital money digital currency E-money digital financial services

Quantum Blockchain: A Decentralized, Encrypted and Distributed Database Based on Quantum Mechanics

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Journal of Quantum Computing 2019年第2期1卷 49-63页

作者： Chuntang Li Yinsong Xu Jiahao Tang Wenjie Liu School of Computer and Software Nanjing University of Information Science and TechnologyNanjing210044China Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and TechnologyNanjing210044China

Quantum blockchain can be understood as a decentralized, encrypted anddistributed database based on quantum computation and quantum information *** the data is recorded in the quantum blockchain, it will not be maliciously tamperedwith. In recent years, the development of quantum computation and quantum informationtheory makes more and more researchers focus on the research of quantum blockchain. Inthis paper, we review the developments in the field of quantum blockchain, and brieflyanalyze its advantages compared with the classical blockchain. The construction and theframework of the quantum blockchain are introduced. Then we introduce the method ofapplying quantum technology to a certain part of the general blockchain. In addition, theadvantages of quantum blockchain compared with classical blockchain and itsdevelopment prospects are summarized.

关键词： Quantum computation quantum blockchain digital currency