If Rockefeller Were a Coder
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P2P Business Applications: Future and Directions
Communications and Network, 2012, 4, 248-260 http://dx.doi.org/10.4236/cn.2012.43029 Published Online August 2012 (http://www.SciRP.org/journal/cn) P2P Business Applications: Future and Directions Pankaj Pankaj, Micki Hyde, James A. Rodger MIS and Decision Sciences, Eberly College of Business & Information Technology, Indiana University of Pennsylvania, Indiana, USA Email: [email protected] Received May 20, 2012; revised June 18, 2012; accepted July 17, 2012 ABSTRACT Since the launch of Napster in June 1999, peer-to-peer technology (P2P) has become synonymous with file sharing ap- plications that are the bane of the recording industry due to copyright infringements and consequent revenue losses. P2P promised a revolution in business computing which has not arrived. It has become synonymous with illegal file sharing and copyright violations. Meanwhile the information systems industry has undergone a paradigm change, and we are supposedly living in a world of cloud computing and mobile devices. It is pertinent to examine if P2P, as a revolution- ary technology, is still relevant and important today and will be in future. One has to examine this question in the con- text of the fact that P2P technologies have matured but have however had limited adoption outside file-sharing in the consumer space. This paper provides a detailed analysis of P2P computing and offers some propositions to answer the question of the relevancy of P2P. It is proposed that P2P is still a relevant technology but may be reshaped in the com- ing years in a different form as compared to what exists today. -
From Technology to Society: an Overview of Blockchain-Based DAO
> REPLACE THIS LINE WITH YOUR PAPER IDENTIFICATION NUMBER < 1 From Technology to Society: An Overview of Blockchain-based DAO Lu Liu, Sicong Zhou, Huawei Huang1, Zibin Zheng1 Decentralized Autonomous Organization (DAO) is believed to play a significant role in our future society governed in a decentralized way. In this article, we first explain the definitions and preliminaries of DAO. Then, we conduct a literature review of the existing studies of DAO published in the recent few years. Through the literature review, we find out that a comprehensive survey towards the state-of-the-art studies of DAO is still missing. To fill this gap, we perform such an overview by identifying and classifying the most valuable proposals and perspectives closely related to the combination of DAO and blockchain technologies. We anticipate that this survey can help researchers, engineers, and educators acknowledge the cutting-edge development of blockchain-related DAO technologies. Index Terms—Blockchain, Contracts, DAO, Fault Tolerant System, Governance I. INTRODUCTION Blockchain-based technologies have been deeply adopted by User multiple applications that are closely related to every corner of User Contract our daily life, such as cryptocurrencies, tokenomics, business User applications, Internet-of-Things (IoT) applications, and etc.. Decentralized Autonomous Organization (DAO), as one of the Exchange blockchain applications shown in Fig. 1, is growing rapidly Miner Developer and drawing great attention from both academia and the Contract governments around the world. Although DAO has brought Developer a lot of opportunities to blockchain technologies, we are sur- prised to find out that an overview of DAO in the perspective Contract Exchange Miner of blockchains is still missing. -
Casper the Friendly Finality Gadget
Casper the Friendly Finality Gadget Vitalik Buterin and Virgil Griffith Ethereum Foundation Abstract We introduce Casper, a proof of stake-based finality system which overlays an existing proof of work blockchain. Casper is a partial consensus mechanism combining proof of stake algorithm research and Byzantine fault tolerant consensus theory. We introduce our system, prove some desirable features, and show defenses against long range revisions and catastrophic crashes. The Casper overlay provides almost any proof of work chain with additional protections against block reversions. 1. Introduction Over the past few years there has been considerable research into “proof of stake” (PoS) based blockchain consensus algorithms. In a PoS system, a blockchain appends and agrees on new blocks through a process where anyone who holds coins inside of the system can participate, and the influence an agent has is proportional to the number of coins (or “stake”) it holds. This is a vastly more efficient alternative to proof of work (PoW) “mining” and enables blockchains to operate without mining’s high hardware and electricity costs. There are two major schools of thought in PoS design. The first, chain-based proof of stake[1, 2], mimics proof of work mechanics and features a chain of blocks and simulates mining by pseudorandomly assigning the right to create new blocks to stakeholders. This includes Peercoin[3], Blackcoin[4], and Iddo Bentov’s work[5]. The other school, Byzantine fault tolerant (BFT) based proof of stake, is based on a thirty-year-old body of research into BFT consensus algorithms such as PBFT[6]. BFT algorithms typically have proven mathematical 2 properties; for example, one can usually mathematically prove that as long as > 3 of protocol participants are following the protocol honestly, then, regardless of network latency, the algorithm cannot finalize conflicting blocks. -
The Technology Copyright © ${Date}
1 The Technology Copyright © ${Date}. ${Publisher}. All rights reserved. © ${Date}. ${Publisher}. Copyright Copyright © ${Date}. ${Publisher}. All rights reserved. © ${Date}. ${Publisher}. Copyright 1 Blockchains, Bitcoin, and Decentralized Computing Platforms At their core, blockchains are decentralized databases, maintained by a dis tributed network of computers. They blend together a variety of dif er ent technologies— including peer-to-peer networks, public-private key cryptography, and consensus mechanisms—to create a novel type of database. We provide he re a short description of how blockchains work, and unpack and contextualize their key technological components. UNTIL THE BIRTH of the Internet, computers suffered in isolation. They were islands, lacking a way to connect to one another except by using cumber- some cables. That all changed in the late 1950s. With the Soviets successfully launching Sputnik into space, and with fears of the Cold War mounting, re- searchers at the Rand Corporation began to explore a new computing para- digm—in hopes of developing a system that would be able to withstand a nuclear catastrophe.1 In August 1964, af ter years of research, Paul Baran, one of the Rand researchers, reported a breakthrough. By relying on a technology called packet switching, Baran was able to send fragments of information from one computer to another and have these fragments reassembled, almost like magic.2 Armed with Baran’s research, the Advanced Research Proj ects Agency Copyright © ${Date}. ${Publisher}. All rights reserved. © ${Date}. ${Publisher}. Copyright (ARPA) at the U.S. Department of Defense used this new technology to 13 14 BLOCKCHAIN AND THE LAW create the first network of computers, ARPAnet, later renamed DARPAnet after “Defense” was added to the beginning of the agency’s name, helping researchers and academics to share files and exchange resources with one an- other. -
Beauty Is Not in the Eye of the Beholder
Insight Consumer and Wealth Management Digital Assets: Beauty Is Not in the Eye of the Beholder Parsing the Beauty from the Beast. Investment Strategy Group | June 2021 Sharmin Mossavar-Rahmani Chief Investment Officer Investment Strategy Group Goldman Sachs The co-authors give special thanks to: Farshid Asl Managing Director Matheus Dibo Shahz Khatri Vice President Vice President Brett Nelson Managing Director Michael Murdoch Vice President Jakub Duda Shep Moore-Berg Harm Zebregs Vice President Vice President Vice President Shivani Gupta Analyst Oussama Fatri Yousra Zerouali Vice President Analyst ISG material represents the views of ISG in Consumer and Wealth Management (“CWM”) of GS. It is not financial research or a product of GS Global Investment Research (“GIR”) and may vary significantly from those expressed by individual portfolio management teams within CWM, or other groups at Goldman Sachs. 2021 INSIGHT Dear Clients, There has been enormous change in the world of cryptocurrencies and blockchain technology since we first wrote about it in 2017. The number of cryptocurrencies has increased from about 2,000, with a market capitalization of over $200 billion in late 2017, to over 8,000, with a market capitalization of about $1.6 trillion. For context, the market capitalization of global equities is about $110 trillion, that of the S&P 500 stocks is $35 trillion and that of US Treasuries is $22 trillion. Reported trading volume in cryptocurrencies, as represented by the two largest cryptocurrencies by market capitalization, has increased sixfold, from an estimated $6.8 billion per day in late 2017 to $48.6 billion per day in May 2021.1 This data is based on what is called “clean data” from Coin Metrics; the total reported trading volume is significantly higher, but much of it is artificially inflated.2,3 For context, trading volume on US equity exchanges doubled over the same period. -
Validation of Smart Contracts Through Automated Tooling
Faculty of Sciences and Tecnology Department of Informatics Engineering Validation of Smart Contracts Through Automated Tooling Tom´asMorgado de Carvalho Concei¸c~ao Internship Report in the context of the Master in Informatics Engineering, Specialization in Software Engineering advised by Professor Raul Barbosa and Eng. Jo~aoBarbosa and presented to the Department of Informatics Engineering / Faculty of Sciences and Technology January 2019 Acknowledgements I would first like to thank Professor Raul Barbosa, my advisor at the University of Coimbra, for, with his valuable experience and insights, guiding me through this process and always challenging me to do better. I would like to thank my advisor, Jo~aoBarbosa, not only for his technical contributions to this dissertation but for always ensuring that I had my priorities straight and was managing my time properly. Thank you for pushing me to always make healthy choices regarding my work-life balance. I want to thank the members of my jury, Professor Fernando Jos´eBarros and Professor C´esarAlexandre Domingues Teixeira, for their input and suggestions for improvement, and their constructive criticism. I would like to thank Whitesmith and Blocksmith, and in particular Gon¸caloLouzada, Maria Jo~aoFerreira and Rafael Jegundo, for accepting me on this internship, providing me with all the tools and conditions to achieve my goals and for inviting me to take part on other projects during this year. I would also like to thank my co-workers, who, since the first day and without exception, made me feel welcome and at home. I have learned something new with every single one of you. -
Research Problems of Decentralized Systems with Largely Autonomous Nodes
RESEARCH PROBLEMS OF DECENTRALIZED SYSTEMS WITH LARGELY AUTONOMOUS NODES by Jerome H. Saltzer Massachusetts Institute of Technology A currently popular systems research project is to explore the possibilities and problems for computer system organization that arise from the rapidly falling cost of computing hardware. Interconnecting fleets of mini- or micro-computers and putting intelligence in terminals and concentrators to produce so-called "distributed systems" has recently been a booming development activity. While these efforts range from ingenious to misguided, many seem to miss a most important aspect of the revolution in hardware costs: that more than any other factor, the en_~ cost of acquiring and operating a free-standing, complete computer system has dropped and continues to drop rapidly. Where a decade ago the capital outlay required to install a computer system ranged from $150,000 up into the millions, today the low end of that range is below $15,000 and dropping. The consequence of this particular observation for system structure comes from the next level of analysis. In most organizations, decisions to make capital acquisitions tend to be more centralized for larger capita] amounts, and less centralized for smaller capital amounts. On this basis we may conjecture that lower entry costs for computer systems will lead naturally to computer acquisition decisions being made at points lower in a management hierarchy. Further, because a lower-level organization usually has a smaller mission, those smaller-priced computers will tend to span a smaller range of applications, and in the limit of the argument will be dedicated to a single application. -
Short Selling Attack: a Self-Destructive but Profitable 51% Attack on Pos Blockchains
Short Selling Attack: A Self-Destructive But Profitable 51% Attack On PoS Blockchains Suhyeon Lee and Seungjoo Kim CIST (Center for Information Security Technologies), Korea University, Korea Abstract—There have been several 51% attacks on Proof-of- With a PoS, the attacker needs to obtain 51% of the Work (PoW) blockchains recently, including Verge and Game- cryptocurrency to carry out a 51% attack. But unlike PoW, Credits, but the most noteworthy has been the attack that saw attacker in a PoS system is highly discouraged from launching hackers make off with up to $18 million after a successful double spend was executed on the Bitcoin Gold network. For this reason, 51% attack because he would have to risk of depreciation the Proof-of-Stake (PoS) algorithm, which already has advantages of his entire stake amount to do so. In comparison, bad of energy efficiency and throughput, is attracting attention as an actor in a PoW system will not lose their expensive alternative to the PoW algorithm. With a PoS, the attacker needs mining equipment if he launch a 51% attack. Moreover, to obtain 51% of the cryptocurrency to carry out a 51% attack. even if a 51% attack succeeds, the value of PoS-based But unlike PoW, attacker in a PoS system is highly discouraged from launching 51% attack because he would have to risk losing cryptocurrency will fall, and the attacker with the most stake his entire stake amount to do so. Moreover, even if a 51% attack will eventually lose the most. For these reasons, those who succeeds, the value of PoS-based cryptocurrency will fall, and attempt to attack 51% of the PoS blockchain will not be the attacker with the most stake will eventually lose the most. -
Creation and Resilience of Decentralized Brands: Bitcoin & The
Creation and Resilience of Decentralized Brands: Bitcoin & the Blockchain Syeda Mariam Humayun A dissertation submitted to the Faculty of Graduate Studies in partial fulfillment of the requirements for the degree of Doctor of Philosophy Graduate Program in Administration Schulich School of Business York University Toronto, Ontario March 2019 © Syeda Mariam Humayun 2019 Abstract: This dissertation is based on a longitudinal ethnographic and netnographic study of the Bitcoin and broader Blockchain community. The data is drawn from 38 in-depth interviews and 200+ informal interviews, plus archival news media sources, netnography, and participant observation conducted in multiple cities: Toronto, Amsterdam, Berlin, Miami, New York, Prague, San Francisco, Cancun, Boston/Cambridge, and Tokyo. Participation at Bitcoin/Blockchain conferences included: Consensus Conference New York, North American Bitcoin Conference, Satoshi Roundtable Cancun, MIT Business of Blockchain, and Scaling Bitcoin Tokyo. The research fieldwork was conducted between 2014-2018. The dissertation is structured as three papers: - “Satoshi is Dead. Long Live Satoshi.” The Curious Case of Bitcoin: This paper focuses on the myth of anonymity and how by remaining anonymous, Satoshi Nakamoto, was able to leave his creation open to widespread adoption. - Tracing the United Nodes of Bitcoin: This paper examines the intersection of religiosity, technology, and money in the Bitcoin community. - Our Brand Is Crisis: Creation and Resilience of Decentralized Brands – Bitcoin & the Blockchain: Drawing on ecological resilience framework as a conceptual metaphor this paper maps how various stabilizing and destabilizing forces in the Bitcoin ecosystem helped in the evolution of a decentralized brand and promulgated more mainstreaming of the Bitcoin brand. ii Dedication: To my younger brother, Umer. -
Cloud Customer Architecture for Blockchain
Cloud Customer Architecture for Blockchain Executive Overview Blockchain technology has the potential to radically alter the way enterprises conduct business as well as the way institutions process transactions. Businesses and governments often operate in isolation but with blockchain technology participants can engage in business transactions with customers, suppliers, regulators, potentially spanning across geographical boundaries. Blockchain technology, at its core, features an immutable distributed ledger, a decentralized network that is cryptographically secured. Blockchain architecture gives participants the ability to share a ledger, through peer to peer replication, which is updated every time a block of transaction(s) is agreed to be committed. The technology can reduce operational costs and friction, create transaction records that are immutable, and enable transparent ledgers where updates are nearly instantaneous. It may also dramatically change the way workflow and business procedures are designed inside an enterprise and open up new opportunities for innovation and growth. Blockchain technology can be viewed from a business, legal and technical perspective: • From a business perspective, blockchain is an exchange network that facilitates transfer of value, assets, or other entities between willing and mutually agreeing participants, ensuring privacy and control of data to stakeholders • From a legal perspective, blockchain ledger transactions are validated, indisputable transactions, which do not require intermediaries or trusted third-party legal entities. • From a technical perspective, blockchain is a replicated, distributed ledger of transactions with ledger entries referencing other data stores (for additional information related to ledger transactions). Cryptography is used to ensure that network participants see only the parts of the ledger that are relevant to them, and that transactions are secure, authenticated and verifiable, in the context of permissioned business blockchains. -
The Amazing Story of Ethereum and the $55 Million Heist That Almost
One he clock above baggage claim at Toronto’s Pearson Airport read 21:45 as Vitalik Buterin, six years old, played with a rubber Tducky. A gift from the Lufthansa flight attendant on the long journey from Moscow, it would become one of his favorite bath toys in the years ahead. As the towheaded, blue-eyed boy looked around this new place, COPYRIGHTEDhe thought about recently celebrating MATERIAL his birthday with his parents and grandparents in Kolomna, the ancient Russian city southeast of Moscow where the Moskva and Oka rivers meet. A few days later, when he was told they were going to Canada, he asked if it was for a week or a month. No, zaya, it’s for good, he was told. Vladimir Putin would soon be president in Russia, and his parents were seeking better opportunities – as well as some adventure – abroad. There are few bigger 27 Leising602934_c01.indd 27 8/12/2020 8:20:50 AM 28 out of the ether changes in a life than moving across an ocean, and like anyone, the skinny six-year-old felt afraid of the unknown he now faced. He carried fond, but few, memories of Russia with him. He remem- bered living with his grandparents while his mom and dad were busy with their careers, and as they worked out the details of an amicable divorce. His mother’s parents had an apartment in Kolomna as well as a dacha where his grandmother tended a vegetable garden. The nearby forest was his favorite place to play. He remembered it being cold. -
Centralized Versus Decentralized Computing: Organizational Considerations and Management Options
Centralized versus Decentralized Computing: Organizational Considerations and Management Options JOHN LESLIE KING Department of Information and Computer Science, University of Cahfornia, Irvine, Irvine, California 92717 The long.standing debate over whether to centralize or decentralize computing is examined in terms of the fundamental organizational and economic factors at stake. The traditional debate is evaluated, and found to focus predominantly on issues of efficiency versus effectiveness, with solutions based on a rationalistic strategy of optimizing in this trade-off. A behavioral assessment suggests that the driving issues in the debate are the politics of organization and resources, centering on the issue of control. The economics of computing depolyment decisions are presented as an important issue, but one that often serves as a field of argument in which political concerns are dealt with. The debate in this light appears to be unresolvable in the long run, although effective strategies can be developed when the larger issues are recognized. The current situation facing managers of computing, given the advent of small and comparatively inexpensive computers, is examined in detail, and a set of management options for dealing with this persistent issue is presented. Categories and Subject Descriptors: K.6.0 [Management of Computing and Information Systems]: General; K.6.1 [Management of Computing and Information Systems]: Project and People Management; K.6.4 [Management of Computing and Information Systems]: System Management