The Future of Currency Henrik
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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. -
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. -
User Manual Ledger Nano S
User Manual Ledger Nano S Version control 4 Check if device is genuine 6 Buy from an official Ledger reseller 6 Check the box contents 6 Check the Recovery sheet came blank 7 Check the device is not preconfigured 8 Check authenticity with Ledger applications 9 Summary 9 Learn more 9 Initialize your device 10 Before you start 10 Start initialization 10 Choose a PIN code 10 Save your recovery phrase 11 Next steps 11 Update the Ledger Nano S firmware 12 Before you start 12 Step by step instructions 12 Restore a configuration 18 Before you start 19 Start restoration 19 Choose a PIN code 19 Enter recovery phrase 20 If your recovery phrase is not valid 20 Next steps 21 Optimize your account security 21 Secure your PIN code 21 Secure your 24-word recovery phrase 21 Learn more 22 Discover our security layers 22 Send and receive crypto assets 24 List of supported applications 26 Applications on your Nano S 26 Ledger Applications on your computer 27 Third-Party applications on your computer 27 If a transaction has two outputs 29 Receive mining proceeds 29 Receiving a large amount of small transactions is troublesome 29 In case you received a large amount of small payments 30 Prevent problems by batching small transactions 30 Set up and use Electrum 30 Set up your device with EtherDelta 34 Connect with Radar Relay 36 Check the firmware version 37 A new Ledger Nano S 37 A Ledger Nano S in use 38 Update the firmware 38 Change the PIN code 39 Hide accounts with a passphrase 40 Advanced Passphrase options 42 How to best use the passphrase feature 43 -
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. -
Central Banks and Alternative Monetary Alternative Monetary
Central Banks and Alternative Monetary Systems Christopher J. Neely AittViPAssistant Vice Presid idtent, Federal Reserve Bank of St. Louis Annual Educators Conference October 19, 2011 The opinions expressed are my own and not necessarily those of the Federal Reserve Bank of Saint Louis or the Federal Reserve System. 2 Today’sTopics s Topics Central Banks and Alternative Money Systems o What is Money? o Methods of Monetary Policy o ClBkCentral Banks o Central Banks vs. Commodity Standard 3 What is Money? Money • Money: That which can be exchanged for goods and services. – Functions: • Medium of exchange • Store of value • Unit of measure Why Do We Need Money? • Money solves the mutual coincidence of wants problem. • Greatly reduces transactions costs/shopping time. – My grocer does not want a lecture on economics in exchange for Cheerios. Historical Forms of Money • Commodities: cigarettes, furs, gold, Rai stones (Yap island) • Fiat money: Money whose vvuesoalue is not intrins sc.ic. – Introduced during wartime in the United States • Charac ter is tics of usef ul money – Durable, transportable, divisible, homogenous, easily produced (?) Historical Forms of Money Rai stone Historical Forms of Money • What are the advantages and disadvantages of having a currency that is easily produced? Money Supply • Monetary base: Currency and reserves with the central bank. • Narrow to broad definitions of money – Currency – Demand deposits – Time deposits, CDs, – Shor t-tbdterm bonds • Money and bonds are close to a continuum now – M0, M1, MZM, M2 Money Supply Monetary Base 3000 2500 ars ll 2000 1500 ns of US Dol 1000 Billio 500 Monetary Base (BASE) 0 2/1/1984 2/1/1989 2/1/1994 2/1/1999 2/1/2004 2/1/2009 Money Supply Money supply levels go up and up. -
CY19 January a Collection of Bitcoin Commentary from the Brightest
CY19 January A collection of Bitcoin commentary from the brightest minds in the crypto community. Crypto Words CY19 January Contents Goals and Scope ......................................................................................................................................................................... 2 Support Crypto Words .......................................................................................................................................................... 3 Cryptocurrency: The Canary in the Coal Mine.................................................................................................. 4 Tweetstorm: Bitcoin’s 10 Year Anniversary ......................................................................................................... 6 Bitcoin: Two Parts Math, One Part Biology .......................................................................................................... 8 Planting Bitcoin - Season (2/4) .................................................................................................................................... 12 Planting Bitcoin - Gardening (4/4) ............................................................................................................................ 18 Planting Bitcoin — Soil (3/4) .......................................................................................................................................... 25 Planting Bitcoin — Species (1/4) ............................................................................................................................... -
Performance-Based Analysis of Blockchain Scalability Metric
ISSN 1846-6168 (Print), ISSN 1848-5588 (Online) Subject review https://doi.org/10.31803/tg-20210205103310 Performance-Based Analysis of Blockchain Scalability Metric Jyoti Yadav*, Ranjana Shevkar Abstract: Cryptocurrencies like Bitcoin and Ethereum, are widely known applications of blockchain technology, have drawn much attention and are largely recognized in recent years. Initially Bitcoin and Ethereum processed 7 and 15 Transactions Per Second (TPS) respectively, whereas VISA and Paypal process 1700 and 193 TPS respectively. The biggest challenge to blockchain adoption is scalability, defined as the capacity to change the block size to handle the growing amount of load. This paper attempts to present the existing scalability solutions which are broadly classified into three layers: Layer 0 solutions focus on optimization of propagation protocol for transactions and blocks, Layer 1 solutions are based on the consensus algorithms and data structure, and Layer 2 solutions aims to decrease the load of the primary chain by implementing solutions outside the chain. We present a classification and comparison of existing blockchain scalability solutions based on performance along with their pros and cons. Keywords: consensus; decentralization; latency; scalability; security; throughput 1 INTRODUCTION sectors such as health care, media, logistics, supply chain management, power and utilities, Government, property, E- Blockchain is a decentralized, distributed, immutable voting etc. Apart from attractive features and interesting ledger with a sequence of blocks interlinked and secured applications, the most challenging task of blockchain is its using cryptography. Block is a basic unit of blockchain that scalability. bundles a set of transactions initiated by participating nodes This paper attempts to classify and compare existing in the blockchain network. -
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. -
Impossibility of Full Decentralization in Permissionless Blockchains
Impossibility of Full Decentralization in Permissionless Blockchains Yujin Kwon*, Jian Liuy, Minjeong Kim*, Dawn Songy, Yongdae Kim* *KAIST {dbwls8724,mjkim9394,yongdaek}@kaist.ac.kr yUC Berkeley [email protected],[email protected] ABSTRACT between achieving good decentralization in the consensus protocol Bitcoin uses the proof-of-work (PoW) mechanism where nodes earn and not relying on a TTP exists. rewards in return for the use of their computing resources. Although this incentive system has attracted many participants, power has, CCS CONCEPTS at the same time, been significantly biased towards a few nodes, • Security and privacy → Economics of security and privacy; called mining pools. In addition, poor decentralization appears not Distributed systems security; only in PoW-based coins but also in coins that adopt proof-of-stake (PoS) and delegated proof-of-stake (DPoS) mechanisms. KEYWORDS In this paper, we address the issue of centralization in the consen- Blockchain; Consensus Protocol; Decentralization sus protocol. To this end, we first define ¹m; ε; δº-decentralization as a state satisfying that 1) there are at least m participants running 1 INTRODUCTION a node, and 2) the ratio between the total resource power of nodes Traditional currencies have a centralized structure, and thus there run by the richest and the δ-th percentile participants is less than exist several problems such as a single point of failure and corrup- or equal to 1 + ε. Therefore, when m is sufficiently large, and ε and tion. For example, the global financial crisis in 2008 was aggravated δ are 0, ¹m; ε; δº-decentralization represents full decentralization, by the flawed policies of banks that eventually led to many bank which is an ideal state. -
Blockchain Security
CO 445H BLOCKCHAIN SECURITY Dr. Benjamin Livshits Apps Stealing Your Data 2 What are they doing with this data? We don’t know what is happening with this data once it is collected. It’s conceivable that this information could be analysed alongside other collections of data to provide insights into a person’s identity, online activity, or even political beliefs. Cambridge Analytica and other dodgy behavioural modification companies taught us this. The fact is we don’t know what is happening to the data that is being exfiltrated in this way. And in most cases we are not even aware this is taking place. The only reason we know about this collection of data-stealing apps is because security researcher, Patrick Wardle told us. Sudo Security Group’s GuardianApp claims another set of dodgy privacy eroding iOS apps, while Malwarebytes has yet another list of bad actors. http://www.applemust.com/how-to-stop-mac-and-ios-apps-stealing-your-data/ From Malwarebytes 3 https://objective-see.com/blog/blog_0x37.html Did You Just Steal My Browser History!? 4 Adware Doctor Stealing Browsing History 5 https://vimeo.com/288626963 Blockchain without the Hype 6 Distributed ledgers and blockchain specifically are about establishing distributed trust How can a community of individuals agree on the state of the world – or just the state of a database – without the risk of outside control or censorship Doing this with open-source code and cryptography turns out to be a difficult problem Distributed Trust 7 A blockchain is a decentralized, distributed and public -
How to Sell Ethereum Classic on Robinhood
1 How to Sell Ethereum Classic on Robinhood Update [06-07-2021] This widget shows the number of times this symbol reached a new low price for specific periods, from the past 5-Days to the past 20-Years. Included are the Open, High, Low, Last,Change, Change and Volume figures. When looking at the Periods in the Price Performance table, the 5-Day through 2-Year periods are based on daily data, the 3-Year and 5-Year periods are based on weekly data, and the 10-Year and 20-Year periods are based on monthly data. I need to give payment ETH address to my customers for deposit ETH their accounts. You can t export the xpub directly from a ledger nano s with the default bitcoin or ethereum apps. I want to use a HD ETH wallet for this and I am using Ledger Nano S now. If Ledger support HD, How can I export XPub. But you can construct an xpub using the data you can extract from the ledger. Positively Correlated Currencies. 50-day, 100-day and 200-day moving averages are among the most commonly used indicators to identify important resistance and support levels. Some charts will use hollow and filled candlestick bodies instead of colors to represent the same thing. The Maker Protocol MakerDAO s Multi-Collateral Dai MCD System. At a technical level, smart contracts manage each type of vote. Additionally, because exchanges and blockchain projects can integrate the DSR into their own platforms, it presents new opportunities for cryptocurrency traders, entrepreneurs, and established businesses to increase their Dai savings and Dai operating capital.