With the popularity of artificial intelligence(AI), intelligent agents are potential to positively change people's lives in every aspect. Meanwhile, blockchain technology opens a new era of value exchange with trustless security among strangers. Its decentralized architecture and cryptography based data storage pattern bring light to vast application areas with high security and scalability requirements. In this work, we provide a general solution for intelligence application development on blockchain. Specifically, we propose a novel design of a smart agent inspired by the smart contract concept in the blockchain. Based on the proposed smart agents, a system architecture composed by smart agents is built supported by blockchain, where the agent network and blockchain network is overlapped. Then, a demonstration of the proposed architecture is designed in a case where private data required to be "properly protected" in a distributed manner. The implementation of the designed system is further conducted in the Ethereum development environment, showing the effectiveness and applicability of the proposed architecture in developing a secure distributed application.
As the accounting profession is rapidly changing, faculty members are challenged with the task of incorporating emerging advances into the accounting curriculum in order to equip students for future success. There is little debate that cryptocurrency is prominent in the business world today, thus prompting attention for accounting professionals and educators is important. In this paper, we document our experiences in introducing cryptocurrencies to undergraduate financial accounting students with the goal of capturing their knowledge and measuring their perceptions of the impact digital currency holds in the current economic environment. To operationalize our research question, students were given a cryptocurrency assignment to complete outside of class and were asked a series of questions in the class period directly after the assignment was due. The results of our case study show that students became more aware of cryptocurrencies and accounting practices associated with them after their completion of this assignment and the vast majority of students found this knowledge would benefit them in their future careers.
Abstract Although double‐entry accounting has been used for more than 600 years, today’s era of disruptive technological change utilising blockchain and FinTech has led to the emergence of another promising accounting method: triple‐entry accounting. This paper explores triple‐entry accounting, from its conception to the current state of play, using three case studies. We find that: (i) in a blockchain ecosystem, for some accounts, business entities will only need to perform a single entry internally and the opposite entry will be recorded in a public shared ledger; and (ii) triple‐entry accounting is a new and a more efficient way to address fundamental trust and transparency issues that plague current accounting systems. Triple‐entry accounting with blockchain, when properly implemented, can fundamentally improve accounting.
Cryptocurrencies have embraced Twitter as a major channel of communication. Employing social network analysis and sentiment analysis, this study investigates the Twitter-mediated communication behaviors among cryptocurrencies. This study determines whether a significant association exists between cryptocurrencies' Twitter networks and their credit scores. Data were drawn from the Twitter pages of several top cryptocurrencies. The results indicate that reply-mention networks had the densest structure, that the following-follower network structure was correlated with the reply-mention structure, and that the reply-mention and co-tweet networks were positively correlated. The results also indicate that cryptocurrencies' active networking strategies affected their credit scores and more importantly, that cryptocurrencies frequently linked with fellow currencies tended to have high credit scores.
Purpose The purpose of this paper is to introduce and explore blockchain technology and its potential implementation to hospitality and tourism firms’ wide range of business operations and transactions from a technological and functional point of view. This study’s central interest is to produce novel and rigorous in-depth-review analysis and foundations for a broad discussion and outlook on the potential applications of blockchain technology benefiting hospitality and tourism research, as well as the industry as a whole. Design/methodology/approach This study identifies and proposes several potential areas of the adoption and implementation of blockchain technology to the hospitality and tourism industry, including payment and cryptocurrencies, tracking and service customization, the disintermediation of hospitality and tourism, innovative loyalty programs, smart contracts, integrated property management systems, verified rating and review systems, collaborative initiatives and due diligence and smart tourism, each of which represents fertile avenues for future research. Findings This paper provides extensive critical discussions, reviews and answers to a fundamental question: “What critical functions of Blockchain mechanisms can be implemented to the existing core operational (i.e. booking and reservation systems, guest management, etc.) and business functions (i.e. loyalty/reward programs, agent transactions, etc.) of hospitality and tourism companies?”. Research limitations/implications Future studies should specifically delve further into various angles of this “BizTech” environment based not only on business operations and competition but also on vendor and customer collaboration. Practical implications This study intends to serve as a guidance for future research, facilitate knowledge accumulation and create a new understanding and awareness in both practice and academia. One of the most important applications of blockchain in this industry would be that pertaining to direct booking, online reservation systems (i.e. airlines and online travel agencies) and check-in/out with digital identities. With industry-wide blockchain adoption, guests’ personal information can be digitally validated, saved and secured as previously established cryptographically secured codes verify one’s identity without disclosing essential personal information. Originality/value It is obvious that the hospitality and tourism industry needs urgent technological transformation, industrial innovations and new growth avenues such as the adoption of blockchain technology and systems to maintain its global market share in the future. Therefore, the implementation of blockchain systems can promote the formation of multi-center (i.e. guest operations and customer service), weakly intermediated (i.e. loyalty programs and/or review and rating systems) areas in this industry.
Purpose The purpose of this paper is to examine the institutional context of the entrepreneurial discovery of blockchain applications. Design/methodology/approach This paper draws on institutional and entrepreneurial theory to introduce the economic problem entrepreneurship in the early stages of new technologies, examines the diversity of self-governed hybrid solutions to coordinating entrepreneurial information and draws policy implications. Findings To perceive a valuable and actionable market opportunity, entrepreneurs must coordinate distributed non-price information under uncertainty with others. One potential class of transaction cost economising solution to this problem is private self-governance of information coordination within hybrids. This paper explores a diverse range of entrepreneurial hybrids coalescing around blockchain technology, with implications for innovation policy. Originality/value This paper points to the problem of how the defining of the innovation problem as either choice-theoretic or contract-theoretic changes the remit of innovation policy. Innovation policy and blockchain policy should extend beyond correcting sub-optimal investments or removing barriers to action, to incorporate how polices impact entrepreneurial choices over governance structures to coordinate information.
Sofia Terzi, Konstantinos Votis, Dimitrios Tzovaras, Ioannis Stamelos · 5 authors
The adoption of Information Communication Technologies (ICT) and Web 3.0 contributes to the e-government sector by transforming how public administrations provide advanced and innovative services to interact with citizens. Blockchain (BC) and Artificial Intelligence (AI) disruptive technologies will reshape how we live, work, and interact with government sectors and industries. This paper presents how Blockchain 3.0 and Artificial Intelligence enhance robust, secure, scalable, and authenticity provenance solutions. Two validation scenarios are analyzed to present how blockchain smart contracts and AI agents support energy and health-oriented e-government services.
The chapter focuses on an important part of contract law, namely the law of excuses, in the context of smart contracts development. Smart contracts are supposed to secure actual performance, but to be able to do so appropriately, they need to take into account the possibility that a contract party may raise a valid excuse for non-performance of his obligations. Smart contracts should be able to deal with the possibility of at least some excuses; hence, this analysis may test the suitability of smart contracts for actual contracting. The chapter provides a comparative overview of excuses and hardship, culminating in a “common core” of the rules of various jurisdictions, and investigates whether and how excuses can be dealt with in smart contracts. This analysis shows some limitations of smart contracts, which leads to a more general discussion about possibilities and limitations of smart contracts.
Valentina Gatteschi, Fabrizio Lamberti, Claudio Giovanni Demartini
Chapter 3 introduces the reader to the most relevant technological aspects of blockchain and smart contracts. Specifically, Chapter 3 presents the technological foundations blockchain and smart contracts are built upon, by providing some basic examples, which could help to grasp how this technology works. In addition, it includes an overview of existing, soon to be developed, or potential applications of blockchain and smart contracts in different fields, in order to help the reader understand how they could affect existing processes or, more in general, society.
Project Stella studies the possible use of distributed ledger technology (DLT) on financial market infrastructures (FMIs). DLT solutions have the potential to improve the safety and efficiency of existing systems, as shown by research undertaken by central banks and FMIs. Yet, balancing performance and network size with the distance between nodes, as in the case of Stella phase 1, or the flexibility of cross-ledger delivery-versus-payment (DVP) using hashed timelock contracts without connection between ledgers and liquidity efficiency, as in the case of phase 2, remains a challenge. Project Stella studies the possible use of DLT for FMIs, including large-value central bank RTGS systems. Phase 1 implemented the processing logic of the standard liquidity-saving mechanisms in a DLT environment, and the analysis found that an application could meet the performance needs of an RTGS system. There is a trade-off between DLT performance and network size or distance between nodes. DLT solutions have the potential to strengthen resiliency and reliability. In phase 2, the project team proved that cross-ledger DVP could function even without any connection between individual ledgers. Hashed timelock contracts and digital signatures would be used to achieve interoperability between ledgers, while liquidity efficiency and settlement speed may be negatively affected as a result. DLT solutions have the potential to improve safety and efficiency of existing systems adopted at FMIs, yet balancing diverse system requirements demands careful analysis and consideration. As shown by increasing research and proofs-of-concept on DLT undertaken by many central banks1 and securities exchanges in major jurisdictions, there are both opportunities and challenges for further exploration.
Mature fields of market activity are characterized by clear norms, entrenched meanings, and rigid power hierarchies that stabilize logics of action. However, how do logics of action emerge in a nascent field of market activity that lacks these types of institutions? To answer this question, I draw on theories of institutions and markets to examine the experiences of 23 adopters of the cryptocurrency Bitcoin during 2015 to 2016. Utilizing an iterative combination of correspondence analysis (CA) techniques and narrative analysis, I show how Bitcoin adoption was motivated by competing value frameworks that corresponded to different user types in the system. This resulted in the emergence novel “extra-institutional logics” that supported the growth of Bitcoin as a whole despite being centered on different visions for the future of the system. These logics provide a unique glimpse into how Bitcoin was able to survive during a period of notable instability preceding a historic market bubble. This article provides support for dynamic theories of markets and demonstrates how logics of action are tethered to the characteristics of the fields in which they emerge.
In only one decade, cryptocurrencies have witnessed significant growth, with Bitcoin being the most dominant one. They are not efficient payment methods, although they bring some benefits linked to the underlying technology they use (Blockchain). In reality, they function more as investment assets than as payment instruments and pose various risks, which are very similar to those encountered on capital markets (price volatility, fraud, market manipulation). In order to deal with these risks, regulation should apply to intermediaries who provide services in relation to cryptocurrencies, such as crypto wallets, operation of crypto exchanges and brokerage. To this end, the European legislator should consider two options. It could, on the one hand, bring cryptocurrency service providers within the scope of the existing financial services regime and thus modify MIFID II in order to include cryptocurrencies in the list of financial instruments. The European legislator could also, on the other hand, aim at creating a new appropriate and proportionate regime that draws on the existing one. Insofar as the existing regulatory framework was not designed with cryptocurrencies in mind and as some of the current rules may not be tailored to the specificities of these assets, the second option is preferable.
Creating fair, transparent and genuinely democratic modes of decentralized decision-making has been a key concern for many developers and users of blockchains. This article evaluates several popular methods of maintaining consensus and achieving decentralized decision-making on blockchain networks in order to assess the extent to which blockchains challenge the norms of the liberal-democratic order. In particular, it compares and contrasts Proof-of-Work, Proof-of-Stake and Practical Byzantine Fault Tolerance consensus mechanisms, assessing not just how they operate in a technical sense but also (and most important) the political, economic and social dimensions of these different blockchain governance strategies. This comparison highlights efforts by blockchain communities to redefine or push the bounds of democracy, as well as the challenges they have faced in their efforts to create digital democracies that do not reproduce the same economic and social inequalities present in traditional democratic systems.
Purpose The US Commodity Futures Trading Commission (CFTC), to date, has not directly addressed how liability for Commodity Exchange Act (CEA) violations involving blockchain or distributed ledger technology should be allocated among the various parties involved in the distributed ledger network, such as the network itself, persons running consensus nodes, developers building applications on the platform, and businesses and end users using such applications. This article discusses recent statements by CFTC Commissioner Brian Quintenz regarding this issue and the approach that the CFTC may take going forward. Design/methodology/approach This article examines the allocation of liability in the context of smart contracts that may violate the CEA. The article discusses how the CFTC, despite its significant focus in recent years on virtual currency and blockchain, has not addressed the issue of liability allocation directly. Recent remarks by Commissioner Quintenz may shed light on the CFTC’s future approach. Findings This article finds that liability allocation questions may become increasingly pressing as smart contracts that potentially violate the CEA proliferate, possibly exposing a broad range of parties involved in a distributed ledger network to liability. To the extent that Commissioner Quintenz’s recent remarks are indicative, the CFTC ultimately may adopt a foreseeability standard in determining liability. Practical implications Applications of distributed ledger technology (DLT) are ever-expanding, continually posing novel CFTC regulatory issues. This is especially the case with respect to smart contracts that may be subject to CFTC jurisdiction. Parties involved in such applications should be mindful of potential liability. Originality/value Practical guidance from experienced finance and derivatives lawyers with strong CFTC expertise.
With the interest and attention that the Blockchain and the Distributed Ledger Technologies (DLTs) have recently demanded, the technology is advancing at a very high rate. With investors and applications in a wide variety of fields, a lot of funding and efforts are being driven into bringing the technology to everyday use. The community and companies are coming up with new ways to collaborate, which makes the blockchain ecosystem evolve at full tilt. Consequently, this paper’s aim is to review the academic and grey literature and to provide readers with information about the evolution, benefits and challenges of the Public Distributed Ledger Technologies and to discuss the latest solutions, which are being developed for bringing decentralization closer to the mainstream. The paper reviews the Directed Acyclic Graph (DAG) structured distributed ledgers with focus on the Hedera Hashgraph, a novelty DLT bringing a unique consensus algorithm with new use-cases enabled by new cryptoeconomic mechanisms, as well as vital services, such as Solidity smart contracts and distributed file storage. Then, we are going to explore second-layer network protocols, a major topic for solving scalability issues and for decentralizing cryptocurrency exchanges. The article tries also to identify the particularities of these technologies and how they bring specific answers to the blockchain trilemma, consisting in three themes - scalability, interoperability and sustainability.
Henry Kim, Marek Laskowski, Michael Zargham, Hjalmar Turesson · 6 authors
The study of how to set up cryptocurrency incentive mechanisms and to operationalize governance is token economics. Given the $250 billion market cap for cryptocurrencies, there is compelling need to investigate this topic. In this paper, we present facets of the token engineering process for a real-life 80-person Swiss blockchain startup, Insolar. We show how Insolar used systems modeling and simulation combined with cryptocurrency expertise to design a mechanism to incentivize enterprises and individual users to use their new MainNet public blockchain network. The study showed subsidy pools that incentivize application developers to develop on the network does indeed have the desired positive effect on MainNet adoption. For a startup like Insolar whose success hinge upon how well their model incentivizes various stakeholders to participate on their MainNet network versus that of numerous alternatives, this token economics simulation analysis provides invaluable insights.
The last few years have seen the emergence of a growing academic literature on the blockchain. On one side are the supporters, who see its potential to create a true, peer-to-peer (p2p) sharing economy. On the other side are the critics, who argue that the blockchain is more likely to reproduce capitalism than to disrupt it. Using the insights generated by the critical literature on the blockchain, this paper seeks to ask new questions and provide new insights about the development of this technology and how it is likely to transform the global political economy through its capacity to enforce global property rights.
Purpose Technological developments such as blockchain seem to be the next step in a digital era and might reshape the way we do business. They are expected to have an impact on both business and society in the next few decades. This paper aims to provide general insights into blockchain technology and the extent to which it might transform the accounting system. Design/methodology/approach Analysing the previous literature, the paper provides a general overview of this phenomenon, identifying pending technical as well as non-technical issues that will have to be addressed for the full potential of blockchain technology to be embraced. The paper also proposes ways in which the information quality dimension might be improved. Findings The paper identifies the pending challenges for blockchain, such as scalability, flexibility, a suitable architecture and cybersecurity. Additionally, to integrate blockchain technology fully into a real accounting ecosystem, a consensus between regulators, auditors and other parties is needed. Originality/value A general overview of this new phenomenon, as well as a summary of how the quality of accounting information might be improved, is provided. Given that it features elements such as decentralization and transparency, blockchain certainly has the potential to improve information and accounting quality.
We design and implement Publication Chain (PubChain), a decentralized open-access publication platform built on decentralized and distributed technologies of blockchain and IPFS peer-to-peer file sharing systems. The existing publication platforms have some severe drawbacks. First, instead of promoting widespread knowledge sharing, access to publications on the platforms owned by publishers is often on a fee basis. This drawback of pay wall prevents researchers from "standing on the shoulders of giants". Moreover, the peer review process on most all existing publication platforms (including both open-access and publisher platforms) is prone to be ineffective, since there is no proper incentive to reviewers for performing high-qualified reviews. PubChain is an alternative platform to the existing publication venues aiming to address their drawbacks. No central third-party owns the contents (i.e., papers and reviews) of PubChain. Exploiting blockchain technology, we devise an elaborate incentive scheme on PubChain to incentivize key stakeholders (i.e., authors, readers and reviewers) to participate publication activities on PubChain in a substantive manner by earning credits and rewards through self-motivated interactions. We have performed simulations to investigate the robustness of our proposed incentive scheme against fraudulent publications and reviews. We also have implemented a prototype of PubChain to demonstrate its key concepts.
Nowadays, blockchain technologies based on peerto-peer networks [1] are generating a new multi-billion dollar economy that presents new challenges for humanity. This paper aims to examine blockchain technology, comment on its problems, and propose a new algorithm that will help solve some of the problems associated with the regulation of this economy and the use of cryptocurrencies as a means of payment.