Blockchain Papers

Simon Gleeson

No abstract is available for this record.

Lin William Cong, Yizhou Xiao

No abstract is available for this record.

Christian M. Stiefmueller

No abstract is available for this record.

Dirk Otto Beerbaum, Seppo Ikäheimo, Julia M. Puaschunder, David Derichs

No abstract is available for this record.

Efstathios Papanikolaou, Jannis Angelis, Vassilis Moustakis

The significance of supply chain collaboration, communication and data exchange along with the importance of the relationships established among interconnected parties in a digital connected world, indicates the power of Distributed Ledger Technology (DLT) to transform the business model. In our study we set out to advance our understanding on how DLT impacts the business model. Since DLT is in its primitive stage of development, most studies focus into the implementation aspect of the technology and limited research has been done into the business model implications. Our research closes that knowledge gap in the literature by answering the question of “What are the secondary effects in business model that stem from DLT adoption?” Due to the inherent characteristics of the DLT, in respect to its network facet and the network effects created, we argue for a business ecosystem approach for our research. The main contributions of this paper are twofold. It presents implicit effects on business model beyond the direct trust and data openness aspects, and it also provides managers and scholars a process model for assessing how each implicit effect impacts the various business model dimensions.

Higinio Mora, Francisco A. Pujol, Mario R. Morales, Rafa Mollá-Sirvent

No abstract is available for this record.

Moutaz Haddara, Julie Norveel, M. Langseth

This paper surveys the current status of blockchain technologies integration and its potentials with enterprise systems’ (ES). The blockchain technology has received substantial attention since the recent cryptocurrency-boom. The corporate world seeks to stay on the blockchain-train by exploring how they can benefit from the evolving technology and platforms. Hence, this research explores the capabilities and potentials of blockchain technology illustrated in the extant literature and investigates how it can reinforce, and be integrated with enterprise systems through semi-structured interviews with subject matter experts. The literature and collected data were classified into four components of blockchain technologies; identity, assets, logistics, and transactions. Our main findings suggest that there is scarce literature on blockchain integration with ES. Nevertheless, there is a huge potential for this integration, specifically on the transactions, identity, and logistics dimensions. In addition, our interview results suggest that blockchains can reinforce ES by accomplishing a single source of truth, and a common environment for shared information amongst a larger scope of actors and organizations.

Roger Heines, Niclas Kannengießer, Benjamin Sturm, Reinhard Jung · 5 authors

Driven by economic advantages and the idea of disintermediation of business processes, the decentralization of technical and economic systems has become a highly discussed topic in recent years. Extant research primarily investigated the technical implementations of decentralized information systems (IS) and their use by firms in business networks. It became clear that interorganizational relationships and business functions must be transformed to enable the use of decentralized IS (e.g., those related to how firms can be involved in the design, instantiation, operation, and governance of decentralized IS). However, the impact of transforming business functions of individual firms remains largely unclear, obfuscating a comprehensive understanding of the implication of decentralized IS use on internal organizational structures of firms. In this work, we focus on the identification of challenges for firms in using distributed ledger technology (DLT as a representative for decentralized IS) and their effects on the business functions of firms.

Jan Kregel

No abstract is available for this record.

Daniel Beverungen, Sebastian Overhage, Albert Gorlick', Pascal Moerchel · 5 authors

A blockchain features an immutable, encrypted, and distributed ledger that enables transactions even if trust and trusted intermediaries are absent. Despite research on their technological properties, few papers are on record to demonstrate (a) what business scenarios blockchains can enable and (b) under which circumstances they outperform rival technologies. This shortfall of design knowledge obscures blockchains’ value proposition, its conceptual limitations, and its positioning towards rival classes of IT artifacts. We set out to design a blockchain-based IS that enables pay-per-use business models for industrial equipment—a business model that suffers from high transaction costs and complex agency dilemma caused by asymmetric information. We demonstrate how smart contracts deployed in a blockchain can level these information asymmetries. However, we also find that blockchains will only outperform rival technologies if the business scenario fulfils a set of specific properties, narrowing down the scope of application scenarios for applying blockchains substantially.

Elena Sinelnikova-Muryleva

No abstract is available for this record.

Katrin Tinn, Christophe Dubach

No abstract is available for this record.

Gabriele Kulenkampff, Martin Ockenfels, Thomas Plückebaum, Konrad Zoz · 5 authors

According to the EU policy, a future-proof broadband supply for all European households is to be achieved by 2025. There is already a wide range of fibre deployment in Europe. However, the expansion of fibre-based access networks in Europe to date has taken place mainly in large cities. In other areas, the expansion is sluggish or non-existent. As a result, a digital divide between urban and rural areas in Europe is arising. The spatial disparity in fibre roll-out is often justified by market stake holders with significant regional cost differences. In the absence of private-sector investment, government subsidy programmes are often used to improve broadband coverage. Thus, politicians have to deal with the question about the level of investment required and the spatial distribution of subsidy needs. In this paper, we will therefore investigate the question of how significant the heterogeneity in the costs of Very High Capacity (VHC) networks in Germany actually is and whether and how the costs for Very High Capacity (VHC) networks differ between urban and rural regions. In the first part of the paper, we will analyse the regional cost differences of access network areas on the basis of bottom-up calculated investment figures. In the second part of the paper, we establish statistical estimation models that explain these regional cost differences. For this purpose, we use publicly available data. As a reference value for regionally differentiated costs of Very High Capacity (VHC) access networks, we use the results of a detailed bottom-up modelling of an FTTH network carried out for the whole of Germany. The model uses georeferenced household and business location data and optimizes the access network routes along the street network in a bottom-up manner. This model allows us to determine regionally differentiated FTTH investment at the level of access areas. By matching this data with the EU-wide standardized EUROSTAT urban/rural typology classification (predominantly urban, intermediate and predominantly rural), we determine whether and to which extent significant regional cost differences can be found in Germany applying these classifications. One focus is on determining the spread of investment requirements, especially among rural areas. Based on our experience, these areas exhibit the lowest economic viability of a network roll-out and, thus, the highest need for funding. By using statistical indicators, we analyse the suitability of the EUROSTAT classification as a differentiation criterion for regional cost differences. Here, we are particularly interested in whether the areas defined as rural form a sufficiently homogeneous group, and whether they show comparable levels of required investment. Our findings confirm that the differentiation criterion used, namely EUROSTAT urban/rural typology classification, is not satisfactory in measuring regional cost differences. It cannot sufficiently account for a large share of observable differences in fibre-based access network costs. Since it is desirable to answer questions regarding the required funding for selected regions based on publicly available data, we apply regression models to identify alternative influencing factors on the basis of publicly available data, in order to better explain observable regional cost differences. Here, we find that a handful of geographical factors are capable of explaining 95% of the geographical differences in fibre investment requirements, the most relevant being the number of connection lines, the number of households per kilometre of road in built-up areas, the main road length per built-up area and the share of built-up area in relation to overall area. In the last part of the analysis, we examine whether the derived results are also meaningful in a political and regulatory context. Discussions about the necessity of promoting high-speed networks usually take place at the level of local authorities. Therefore, in a final step, we address the question whether the statistical relationships derived from the regression model at the level of access areas also apply at a higher aggregated, i.e. NUTS3, level. In summary, we show that for Germany, classifications based on subscriber density exhibit a significant spread in the investment costs of Very High Capacity (VHC) access networks, which is most pronounced in rural clusters. Statistical analyses using regression models can improve the result if geographical elements of the settlement structure are considered in the analysis.

Wei Du, Zhaoli Jia, Lei Zhu

No abstract is available for this record.

Kübra Ates, Andreas H. Glas, Michael Eßig

No abstract is available for this record.

Rolf H. Weber

No abstract is available for this record.

Jingjing Jiang, Aobo Lyu

This study aims to solve the credit problems in the supply chain commodity and currency circulation links from the perspective of the ledger, while the game model method has been adopted. The research firstly reviews the relationship between distributed ledger technology and the essential functions of currency. Then, by constructing two-agent single-period and multi-period game models in the entire supply chain, the researchers analysed the incentive mechanism and equilibrium solution of distributed nodes of Central Bank Digital Currency (CBDC). The results of this study include the incentive mechanism and optimization of distributed nodes based on licensed distributed ledger technology, which is an important issue that CBDC faces when performing currency functions. The implications of this study mainly cover the limitations of the underlying technology of the public chain and its reward mechanism in the supply chain management and provide support for the rationality of the CBDC issuance mechanism based on state-owned commercial banks, which provides a reference for the CBDC practice. The main value of the research not only serves the decision-making department of the CBDC issuance but also provides ideas on the operation mode of digital currency for the field of digital currency research.

Murdoch J. Gabbay, Arvid Jakobsson, Kristina Sojakova

Once you have invented digital money, you may need a ledger to track who owns what -- and an interface to that ledger so that users of your money can transact. On the Tezos blockchain this implies: a smart contract (distributed program), storing in its state a ledger to map owner addresses to token quantities, and standardised entrypoints to transact on accounts. A bank does a similar job -- it maps account numbers to account quantities and permits users to transact -- but in return the bank demands trust, it incurs expense to maintain a centralised server and staff, it uses a proprietary interface ... and it may speculate using your money and/or display rent-seeking behaviour. A blockchain ledger is by design decentralised, inexpensive, open, and it won't just bet your tokens on risky derivatives (unless you ask). The FA1.2 standard is an open standard for ledger-keeping smart contracts on the Tezos blockchain. Several FA1.2 implementations already exist. Or do they? Is the standard sensible and complete? Are the implementations correct? And what are they implementations \emph{of}? The FA1.2 standard is written in English, a specification language favoured by wet human brains but notorious for its incompleteness and ambiguity when rendered into dry and unforgiving code. In this paper we report on a formalisation of the FA1.2 standard as a Coq specification, and on a formal verification of three FA1.2-compliant smart contracts with respect to that specification. Errors were found and ambiguities were resolved; but also, there now exists a \emph{mathematically precise} and battle-tested specification of the FA1.2 ledger standard. We will describe FA1.2 itself, outline the structure of the Coq theories -- which in itself captures some non-trivial and novel design decisions of the development -- and review the detailed verification of the implementations.

Geoffrey Goodell, Hazem Danny Al-Nakib, Paolo Tasca

Objective : to present the new approach to perform monetary transactions with digital currency. Methods : abstract-logical, analytical methods. Results : in recent years, electronic retail payment mechanisms, especially e-commerce and card payments at the point of sale, have increasingly replaced cash in many developed countries. As a result, societies are losing a critical public retail payment option, and retail consumers are losing important rights associated with using cash. To address this concern, we propose an approach to digital currency that would allow people without banking relationships to transact electronically and privately, including both e-commerce purchases and point-of-sale purchases that are required to be cashless. The article shows the advantages of cash payments compared to non-cash ones and defines the possibility to transform these advantages into the central bank digital currencies. The disputable issues of commercial banks development under the spread of digital currencies are discussed. The architecture of digital currencies is described, including distributed ledgers technology. It was shown that, for the digital currency to function effectively, it is necessary to include the privacy of end-users into its architecture; measures to achieve that are determined. Scientific novelty : the approached proposed in the article should be used to develop the digital currencies infrastructure. It should be government-backed, privately-operated and ensure that every transaction is registered by a bank or money services business, relying upon non-custodial wallets backed by privacy-enhancing technology, such as blind signatures or zero-knowledge proofs, to ensure that transaction counterparties are not revealed. This approach can also facilitate more efficient and transparent clearing, settlement, and management of systemic risk. We argue that our system can restore and preserve the salient features of cash, including privacy, owner-custodianship, fungibility, and accessibility, while also preserving fractional reserve banking and the existing two-tiered banking system. Practical significance : the proposed approach can be applied in the practical organization of perform monetary transactions using digital currencies. The article was first published in English language by Future Internet. For more information please contact the editorial office. For original publication: Goodell G., Al-Nakib H. D., Tasca P. A Digital Currency Architecture for Privacy and Owner-Custodianship, Future Internet, 2021, 13, 130. https://doi.org/10.3390/fi13050130 Publication URL: https://www.mdpi.com/1999-5903/13/5/130

Isabela Ruiz Roque da Silva, Nizam Omar

No abstract is available for this record.

Olga Korobeynikova, Dmitry Korobeynikov, Mariya I. Kuzmina, Aleksandr V. Malofeev · 5 authors

No abstract is available for this record.

William Lehr

No abstract is available for this record.

Hugo Benedetti, Christian Caceres, Luis Álvaro Abarzúa

Abstract Utility tokens are digital currencies that serve as the only accepted means of payment for services and products provided through a blockchain-based platform. They finance the development of their product or service, reward and incentivize early adopters and network promoters, align economic incentives between supply, demand, and the marketplace, and enhance network effects among all participants. Their tokenomic design consists of the rules and regulations governing a token’s issuance, distribution, allocation, and potential destruction. The chapter describes utility tokens, compares them with other types of cryptoassets, and discusses their value creation process and role in network economics. It also reviews common tokenomic designs, discusses different regulatory approaches, and provides examples of current utility token applications in decentralized applications such as decentralized finance and virtual reality platforms (metaverses).

Chika A. Anisiuba, Obiamaka P. Egbo, Felix C. Alio, Chuka Uzoma Ifediora · 7 authors

We analyzed cryptocurrency dynamics in the global U.S. dollar–denominated market and the emerging market economies (EMEs) with a view to ascertaining whether activities in these markets are predominantly shaped by reinforcement or substitution effect. Cryptocurrencies analyzed include the Bitcoins, Ethereum, Litecoin, Steller, Bitcoin Cash, and USD Tether. The results suggest that, on average, correlation between digital assets in the cryptocurrencies’ ecosystem is positive. However, there is evidence of an outlier with respect to the USD Tether (USDT) in the global market, revealing that the USDT is negatively associated with all other cryptocurrencies. This is supported by the dynamic regression results that provided evidence of reinforcement effect in favor of the USDT in the global crypto market, thus confirming the status of the USDT as “Stablecoin” as it is pegged 1:1 to USD. In the global market context, the results also revealed that USDT/USD returns had identical outliers that could portend lesser chances of extreme gains or losses compared with suggestions of extreme gains or losses in the EMEs. Furthermore, USDT did not seem to have similar evolution in the EMEs where it had relatively marginal influence in the markets. The vector error correction (VEC) estimate showed mixed results between Altcoins in all the markets; moreover, our finding showed that reinforcement effects hold in favor of Steller (XLM) both in the Russian ruble and Indian rupee crypto markets, whereas the Chinese yuan crypto market was predominantly characterized by substitution effect in favor of Bitcoin.