Cryptocurrency Open Innovation Payment System: Comparative Analysis of Existing Cryptocurrencies
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CASP) Software-Only, Ledger Agnostic, Platform Agnostic, Crypto Agile Bank-Grade Security for Crypto Assets
Protect Your Crypto Assets with Unbound’s Crypto Assets Security Platform (CASP) Software-Only, Ledger Agnostic, Platform Agnostic, Crypto Agile Bank-Grade Security for Crypto Assets Mathematically proven security Cryptography is one of the foundational security elements used by guarantee – the key material never organizations to protect sensitive data, transactions, services and identities. exists in the clear throughout its At the core of any cryptography implementation is the management of lifecycle including creation, in-use cryptographic keys and their protection from compromise and misuse. and at-rest With crypto assets, the protection of private keys is top priority, since the Any currency, any ledger, any private key is used to sign each transaction. It is therefore mandatory platform, any client to keep the key secure – not only from compromise, but also from any Programmatically derived malicious usage – as it takes only one fraudulent transaction (i.e. a single sign addresses (BIP 32/44) that are operation, to empty a wallet). cryptographically protected Backed by proven mathematical guarantees of security, Unbound’s Crypto Stronger and more flexible than Asset Security Platform (CASP) provides its customers with a software-only multi-signature – ledger-agnostic support of flexible quorum security platform that is as safe as hardware. With CASP, one can fully manage structures, any number of human the keys’ lifecycle, define cryptographically-based approval policies, while and/or servers, internal and supporting any currency, any ledger, any platform and any client type. external, that are required to sign a transaction Any Currency, Any Ledger, Any Platform Infinite scalability – easily scale capacity when and where it is Traditionally, securing the keys and secrets that guard the organizations’ most needed valuable assets required the use of dedicated hardware, such as hardware Intuitive and easy to use SDK – security modules (HSMs) and smartcards. -
Linking Wallets and Deanonymizing Transactions in the Ripple Network
Proceedings on Privacy Enhancing Technologies ; 2016 (4):436–453 Pedro Moreno-Sanchez*, Muhammad Bilal Zafar, and Aniket Kate* Listening to Whispers of Ripple: Linking Wallets and Deanonymizing Transactions in the Ripple Network Abstract: The decentralized I owe you (IOU) transac- 1 Introduction tion network Ripple is gaining prominence as a fast, low- cost and efficient method for performing same and cross- In recent years, we have observed a rather unexpected currency payments. Ripple keeps track of IOU credit its growth of IOU transaction networks such as Ripple [36, users have granted to their business partners or friends, 40]. Its pseudonymous nature, ability to perform multi- and settles transactions between two connected Ripple currency transactions across the globe in a matter of wallets by appropriately changing credit values on the seconds, and potential to monetize everything [15] re- connecting paths. Similar to cryptocurrencies such as gardless of jurisdiction have been pivotal to their suc- Bitcoin, while the ownership of the wallets is implicitly cess so far. In a transaction network [54, 55, 59] such as pseudonymous in Ripple, IOU credit links and transac- Ripple [10], users express trust in each other in terms tion flows between wallets are publicly available in an on- of I Owe You (IOU) credit they are willing to extend line ledger. In this paper, we present the first thorough each other. This online approach allows transactions in study that analyzes this globally visible log and charac- fiat money, cryptocurrencies (e.g., bitcoin1) and user- terizes the privacy issues with the current Ripple net- defined currencies, and improves on some of the cur- work. -
GJR-GARCH Volatility Modeling Under NIG and ANN for Predicting Top Cryptocurrencies
Journal of Risk and Financial Management Article GJR-GARCH Volatility Modeling under NIG and ANN for Predicting Top Cryptocurrencies Fahad Mostafa 1,* , Pritam Saha 2, Mohammad Rafiqul Islam 3 and Nguyet Nguyen 4,* 1 Department of Mathematics and Statistics, Texas Tech University, Lubbock, TX 79409, USA 2 Rawls College of Business, Texas Tech University, Lubbock, TX 79409, USA; [email protected] 3 Department of Mathematics, Florida State University, Tallahassee, FL 32306, USA; [email protected] 4 Department of Mathematics and Statistics, Youngstown State University, Youngstown, OH 44555, USA * Correspondence: [email protected] (F.M.); [email protected] (N.N.) Abstract: Cryptocurrencies are currently traded worldwide, with hundreds of different currencies in existence and even more on the way. This study implements some statistical and machine learning approaches for cryptocurrency investments. First, we implement GJR-GARCH over the GARCH model to estimate the volatility of ten popular cryptocurrencies based on market capitalization: Bitcoin, Bitcoin Cash, Bitcoin SV, Chainlink, EOS, Ethereum, Litecoin, TETHER, Tezos, and XRP. Then, we use Monte Carlo simulations to generate the conditional variance of the cryptocurrencies using the GJR-GARCH model, and calculate the value at risk (VaR) of the simulations. We also estimate the tail-risk using VaR backtesting. Finally, we use an artificial neural network (ANN) for predicting the prices of the ten cryptocurrencies. The graphical analysis and mean square errors (MSEs) from the ANN models confirmed that the predicted prices are close to the market prices. For some cryptocurrencies, the ANN models perform better than traditional ARIMA models. Citation: Mostafa, Fahad, Pritam Saha, Mohammad Rafiqul Islam, and Keywords: artificial neural network; cryptocurrency; GJR-GARCH; NIG; Monte Carlo simulation; Nguyet Nguyen. -
OCC Interpretive Letter 1174: DLT and Stable Coins
OCC interpretive letter 1174: DLT and stable coins Author: Ousmène Jacques Mandeng, Senior Advisor, Blockchain and Multiparty Systems, Accenture Table of Contents OCC interpretive letter 1174: DLT and stable coins .................................................. 2 OCC’s position on DLT and stable coins ................................................................. 2 DLT-platforms .......................................................................................................... 3 Tokens ..................................................................................................................... 4 Stable coins ............................................................................................................. 4 Token payments ...................................................................................................... 5 Token networks ....................................................................................................... 5 Bank balance sheet tokenization ............................................................................ 6 Next steps ................................................................................................................. 7 Copyright © 2021 Accenture. All rights reserved. 1 United States OCC interpretive letter 1174: DLT and stable coins The United States Office of the Comptroller of the Currency (OCC), a federal supervisor of national banks and cooperative banks, issued new general guidance about stable coins and distributed ledger technology (DLT) -
Defending Against Malicious Reorgs in Tezos Proof-Of-Stake
Defending Against Malicious Reorgs in Tezos Proof-of-Stake Michael Neuder Daniel J. Moroz Harvard University Harvard University [email protected] [email protected] Rithvik Rao David C. Parkes Harvard University Harvard University [email protected] [email protected] ABSTRACT Conference on Advances in Financial Technologies (AFT ’20), October 21– Blockchains are intended to be immutable, so an attacker who is 23, 2020, New York, NY, USA. ACM, New York, NY, USA , 13 pages. https: //doi.org/10.1145/3419614.3423265 able to delete transactions through a chain reorganization (a ma- licious reorg) can perform a profitable double-spend attack. We study the rate at which an attacker can execute reorgs in the Tezos 1 INTRODUCTION Proof-of-Stake protocol. As an example, an attacker with 40% of the Blockchains are designed to be immutable in order to protect against staking power is able to execute a 20-block malicious reorg at an attackers who seek to delete transactions through chain reorga- average rate of once per day, and the attack probability increases nizations (malicious reorgs). Any attacker who causes a reorg of super-linearly as the staking power grows beyond 40%. Moreover, the chain could double-spend transactions, meaning they commit an attacker of the Tezos protocol knows in advance when an at- a transaction to the chain, receive some goods in exchange, and tack opportunity will arise, and can use this knowledge to arrange then delete the transaction, effectively robbing their counterparty. transactions to double-spend. We show that in particular cases, the Nakamoto [15] demonstrated that, in a Proof-of-Work (PoW) setting, Tezos protocol can be adjusted to protect against deep reorgs. -
Review Articles
review articles DOI:10.1145/3372115 system is designed to achieve common Software weaknesses in cryptocurrencies security goals: transaction integrity and availability in a highly distributed sys- create unique challenges in responsible tem whose participants are incentiv- revelations. ized to cooperate.38 Users interact with the cryptocurrency system via software BY RAINER BÖHME, LISA ECKEY, TYLER MOORE, “wallets” that manage the cryptograph- NEHA NARULA, TIM RUFFING, AND AVIV ZOHAR ic keys associated with the coins of the user. These wallets can reside on a local client machine or be managed by an online service provider. In these appli- cations, authenticating users and Responsible maintaining confidentiality of crypto- graphic key material are the central se- curity goals. Exchanges facilitate trade Vulnerability between cryptocurrencies and between cryptocurrencies and traditional forms of money. Wallets broadcast cryptocur- Disclosure in rency transactions to a network of nodes, which then relay transactions to miners, who in turn validate and group Cryptocurrencies them together into blocks that are ap- pended to the blockchain. Not all cryptocurrency applications revolve around payments. Some crypto- currencies, most notably Ethereum, support “smart contracts” in which general-purpose code can be executed with integrity assurances and recorded DESPITE THE FOCUS on operating in adversarial on the distributed ledger. An explosion of token systems has appeared, in environments, cryptocurrencies have suffered a litany which particular functionality is ex- of security and privacy problems. Sometimes, these pressed and run on top of a cryptocur- rency.12 Here, the promise is that busi- issues are resolved without much fanfare following ness logic can be specified in the smart a disclosure by the individual who found the hole. -
Governance in Decentralized Networks
Governance in decentralized networks Risto Karjalainen* May 21, 2020 Abstract. Effective, legitimate and transparent governance is paramount for the long-term viability of decentralized networks. If the aim is to design such a governance model, it is useful to be aware of the history of decision making paradigms and the relevant previous research. Towards such ends, this paper is a survey of different governance models, the thinking behind such models, and new tools and structures which are made possible by decentralized blockchain technology. Governance mechanisms in the wider civil society are reviewed, including structures and processes in private and non-profit governance, open-source development, and self-managed organisations. The alternative ways to aggregate preferences, resolve conflicts, and manage resources in the decentralized space are explored, including the possibility of encoding governance rules as automatically executed computer programs where humans or other entities interact via a protocol. Keywords: Blockchain technology, decentralization, decentralized autonomous organizations, distributed ledger technology, governance, peer-to-peer networks, smart contracts. 1. Introduction This paper is a survey of governance models in decentralized networks, and specifically in networks which make use of blockchain technology. There are good reasons why governance in decentralized networks is a topic of considerable interest at present. Some of these reasons are ideological. We live in an era where detailed information about private individuals is being collected and traded, in many cases without the knowledge or consent of the individuals involved. Decentralized technology is seen as a tool which can help protect people against invasions of privacy. Decentralization can also be viewed as a reaction against the overreach by state and industry. -
Gold Standard for Passive Income on the Blockchain
Anchor: Gold Standard for Passive Income on the Blockchain Nicholas Platias, Eui Joon Lee, Marco Di Maggio June 2020 Abstract Despite the proliferation of financial products, DeFi has yet to produce a savings product simple and safe enough to gain mass adoption. The price volatility of most cryptoassets makes staking unfit for the vast majority of consumers. On the other end of the spectrum, the cyclical nature of stablecoin interest rates on DeFi staples like Maker and Compound makes those protocols ill-suited for a household savings product. To address this pressing need we introduce Anchor, a savings protocol on the Terra blockchain that offers yield powered by block rewards of major Proof-of-Stake blockchains. Anchor offers a principal-protected stablecoin savings product that pays depositors a stable interest rate. It achieves this by stabilizing the deposit interest rate with block rewards accruing to assets that are used to borrow stablecoins. Anchor will thus offer DeFi’s benchmark interest rate, determined by the yield of the PoS blockchains with highest demand. Ultimately, we envision Anchor to become the gold standard for passive income on the blockchain. 1 Introduction In the past few years we have witnessed explosive growth in Decentralized Finance (DeFi). We have seen the launch of a wide range of financial applications covering a broad range of use cases, including collateralized lending (Compound), decentralized ex- changes (Uniswap) and prediction markets (Augur). Despite early success and a robust influx of brains and capital, DeFi has yet to produce a simple and convenient savings product with broad appeal outside the world of crypto natives. -
Can Ethereum Classic Reach 1000 Dollars Update [06-07-2021] 42 Loss in the Last 24 Hours
1 Can Ethereum Classic Reach 1000 Dollars Update [06-07-2021] 42 loss in the last 24 hours. At that time Bitcoin reached its all-time high of 20,000 and so did Ethereum ETH which surpassed 1,000. 000 to reach 1; Tezos XTZ is priced at 2. In the unlikely event of a significant change for the worst, we expect the Bitcoin price to continue appreciating. ERC-721 started as a EIP draft written by dete and first came to life in the CryptoKitties project by Axiom Zen. ERC-721 A CLASS OF UNIQUE TOKENS. It does not mandate a standard for token metadata or restrict adding supplemental functions. Think of them like rare, one-of-a-kind collectables. The Standard. Institutions are mandating that they invest in clean green technologies and that s what ethereum is becoming, she said. Unlike bitcoin s so-called proof of work, which rewards miners who are competing against each other to use computers and energy to record and confirm transactions on its blockchain, ethereum plans to adopt the more efficient proof of stake model, which chooses a block validator at random based on how much ether it controls. Kaspar explained her thesis Friday on Yahoo Finance Live, citing new updates coming to the cryptocurrency s network later this year. 42 loss in the last 24 hours. At that time Bitcoin reached its all-time high of 20,000 and so did Ethereum ETH which surpassed 1,000. 000 to reach 1; Tezos XTZ is priced at 2. In the unlikely event of a significant change for the worst, we expect the Bitcoin price to continue appreciating. -
Coinbase Explores Crypto ETF (9/6) Coinbase Spoke to Asset Manager Blackrock About Creating a Crypto ETF, Business Insider Reports
Crypto Week in Review (9/1-9/7) Goldman Sachs CFO Denies Crypto Strategy Shift (9/6) GS CFO Marty Chavez addressed claims from an unsubstantiated report earlier this week that the firm may be delaying previous plans to open a crypto trading desk, calling the report “fake news”. Coinbase Explores Crypto ETF (9/6) Coinbase spoke to asset manager BlackRock about creating a crypto ETF, Business Insider reports. While the current status of the discussions is unclear, BlackRock is said to have “no interest in being a crypto fund issuer,” and SEC approval in the near term remains uncertain. Looking ahead, the Wednesday confirmation of Trump nominee Elad Roisman has the potential to tip the scales towards a more favorable cryptoasset approach. Twitter CEO Comments on Blockchain (9/5) Twitter CEO Jack Dorsey, speaking in a congressional hearing, indicated that blockchain technology could prove useful for “distributed trust and distributed enforcement.” The platform, given its struggles with how best to address fraud, harassment, and other misuse, could be a prime testing ground for decentralized identity solutions. Ripio Facilitates Peer-to-Peer Loans (9/5) Ripio began to facilitate blockchain powered peer-to-peer loans, available to wallet users in Argentina, Mexico, and Brazil. The loans, which utilize the Ripple Credit Network (RCN) token, are funded in RCN and dispensed to users in fiat through a network of local partners. Since all details of the loan and payments are recorded on the Ethereum blockchain, the solution could contribute to wider access to credit for the unbanked. IBM’s Payment Protocol Out of Beta (9/4) Blockchain World Wire, a global blockchain based payments network by IBM, is out of beta, CoinDesk reports. -
A Survey on Volatility Fluctuations in the Decentralized Cryptocurrency Financial Assets
Journal of Risk and Financial Management Review A Survey on Volatility Fluctuations in the Decentralized Cryptocurrency Financial Assets Nikolaos A. Kyriazis Department of Economics, University of Thessaly, 38333 Volos, Greece; [email protected] Abstract: This study is an integrated survey of GARCH methodologies applications on 67 empirical papers that focus on cryptocurrencies. More sophisticated GARCH models are found to better explain the fluctuations in the volatility of cryptocurrencies. The main characteristics and the optimal approaches for modeling returns and volatility of cryptocurrencies are under scrutiny. Moreover, emphasis is placed on interconnectedness and hedging and/or diversifying abilities, measurement of profit-making and risk, efficiency and herding behavior. This leads to fruitful results and sheds light on a broad spectrum of aspects. In-depth analysis is provided of the speculative character of digital currencies and the possibility of improvement of the risk–return trade-off in investors’ portfolios. Overall, it is found that the inclusion of Bitcoin in portfolios with conventional assets could significantly improve the risk–return trade-off of investors’ decisions. Results on whether Bitcoin resembles gold are split. The same is true about whether Bitcoins volatility presents larger reactions to positive or negative shocks. Cryptocurrency markets are found not to be efficient. This study provides a roadmap for researchers and investors as well as authorities. Keywords: decentralized cryptocurrency; Bitcoin; survey; volatility modelling Citation: Kyriazis, Nikolaos A. 2021. A Survey on Volatility Fluctuations in the Decentralized Cryptocurrency Financial Assets. Journal of Risk and 1. Introduction Financial Management 14: 293. The continuing evolution of cryptocurrency markets and exchanges during the last few https://doi.org/10.3390/jrfm years has aroused sparkling interest amid academic researchers, monetary policymakers, 14070293 regulators, investors and the financial press. -
Distributed Self-Government in Protocol Communities an Introduction and Index of Examples
SUBSCRIBE NOW AND RECEIVE CRISIS AND LEVIATHAN* FREE! “The Independent Review is a sparkling effervescence of views and insights on economics, history, and politics for people who don’t mind having their minds bent and blistered with high entropy ideas.” —GEORGE GILDER, bestselling author, Wealth and Poverty, Knowledge and Power, and Microcosm Subscribe to The Independent Review and receive a free book of your choice* such as the 25th Anniversary Edition of Crisis and Leviathan: Critical Episodes in the Growth of American Government, by Founding Editor Robert Higgs. This quarterly journal, guided by co-editors Christopher J. Coyne, and Michael C. Munger, and Robert M. Whaples offers leading-edge insights on today’s most critical issues in economics, healthcare, education, law, history, political science, philosophy, and sociology. Thought-provoking and educational, The Independent Review is blazing the way toward informed debate! Student? Educator? Journalist? Business or civic leader? Engaged citizen? This journal is for YOU! *Order today for more FREE book options Perfect for students or anyone on the go! The Independent Review is available on mobile devices or tablets: iOS devices, Amazon Kindle Fire, or Android through Magzter. INDEPENDENT INSTITUTE, 100 SWAN WAY, OAKLAND, CA 94621 • 800-927-8733 • [email protected] PROMO CODE IRA1703 Distributed Self-Government in Protocol Communities An Introduction and Index of Examples F TOM W. BELL e live in exciting times for governance. Large and powerful institutions used to come in only a few standardized types, such as nation-states and W commercial corporations. But the advent of distributed organizations, built on computer code and fueled by digital cash, has supercharged the evolution of social coordination systems.