Follow blockchain research across journals, conferences, and preprint repositories.
5,834 results · page 86 of 244
Christoph Gschnaidtner, Robert Dehghan, Hanna Hottenrott, Julian Schwierzy
No abstract is available for this record.
Runhuan Feng, Seongyoon Kim, Amichai Painsky
No abstract is available for this record.
Cristian Gómez, Juan M. Vara, Francisco Javier Pérez Blanco, David Granada
Smart contracts, underpinned by blockchain technology, are crucial for data modification and querying in decentralized systems. Despite their potential, mainstream adoption has been limited by the complexity of programming and lack of beginner-friendly tools. To address this, we developed SmaCly, a block-based web environment that simplifies smart contract creation through visual programming and automatic Solidity code generation. This paper discusses the initial application of SmaCly in a postgraduate course, highlighting its positive impact on learning outcomes. Findings show that SmaCly’s intuitive interface and structural templates reduce coding errors and enhance understanding of Solidity. Qualitative feedback confirms that the tool aids novice developers in mastering complex concepts and provides valuable insights for future improvements, demonstrating the effectiveness of visual programming environments in education.
Abeer Mirdad, Abdulaziz Khan, Farookh Khadeer Hussain
Blockchain technology has recently been used to provide a secure storage environment through a distributed ledger. Blockchain has increasingly been used in other sectors such as real estate and supply chains, where trust and transparency are paramount considerations. In the pharmaceutical industry, for operational efficiencies, information must be shared reliably between the various stakeholders. A significant limitation in the existing literature is the lack of work to address niche problems such as the just-in-time disposal of drugs that are close to expiry. To address this gap, we propose using blockchain technology. The architectural underpinning of the proposed system (PharmaBlock) is presented and discussed. The primary contribution of this paper is the use of an early warning system (EWS) coupled with marketplace to intelligently identify and dispose of near-expiry drugs. The EWS and marketplace are evaluated and benchmarked using an experimental setup. The result of this experimental has shown that over 90% of notifications were sent correctly and shown also more than 92% of the optimal prices were predicted correctly in PharmaBlock.
Andre Guettler, Oliver Padmaperuma
No abstract is available for this record.
Hoai-Nam Nguyen, Hoang-Anh Pham, Nguyen Huynh Tuong, Duc-Hiep Nguyen
This paper presents a Blockchain-based framework for providing Blockchain services for purposes of stability in terms of consensus protocol infrastructure and governance mechanisms and accessible auxiliary services suitable for the vast majority of current business needs, including fundamental factors such as digital identity with autonomous identity, building solutions to ensure transaction privacy with zero-knowledge proofs, and other services related to digital assets. The proposed framework helps promote digital transformation for businesses, especially small and medium enterprises with limited resources and costs, to apply Blockchain technology to their business models, increasing competitive advantages and assisting the companies in focusing on business logic while still using Blockchain technology in their functions.
David Krause
No abstract is available for this record.
Vu Nguyen Huynh Anh
Managing smart contracts in an Agile software development based on blockchain technology enables project managers to offer rules for software processes to meet the needs and expectations of stakeholders. On the one hand, smart contracts’ faster cycle time, lower fraud, and lower fees and charges have ensured that the business logic satisfies the stakeholder’s criteria. Agile approaches, on the other hand, are development processes that use incremental and iterative engineering methodologies to drive the system life cycle. Such methodologies are typically well-suited for incorporating and adapting management ideas early in the development life cycle. To reconcile both viewpoints, this work provides an organization modeling for constructing smart contracts on the blockchain utilizing organizational modeling techniques that allow all processes as well as the smart contracts management discipline in supply chain finance system development to be illustrated.
Muhammad Iqbal Birjaman, Shofi Arofatul Marits, Sebastián Herman
Islamic economics focuses on realizing Islamic ideals, rahmatan lil 'alamin, which aims to provide goodness, prosperity and well-being. Halal (Positive) and haram (negative) aspects in the realm of cryptocurrency. Based on an extensive review of 23 relevant journals, this research aims to analyze the literature and explore the implications of cryptocurrency in relation to Islamic principles. This research focuses on key variables such as compliance with Sharia, riba (usury), gharar (uncertainty), and transparency. By reviewing existing literature and considering the perspective of Islamic scholars and law, this paper aims to determine whether cryptocurrency is permitted or prohibited from an Islamic perspective. These findings will contribute to the ongoing discourse around the compatibility of cryptocurrencies with Islamic finance and ethics. This study emphasizes the importance of addressing halal and haram issues and implications in the cryptocurrency ecosystem. Ultimately, this research aims to provide insights and recommendations for scholars and practitioners in the field of Islamic finance and cryptocurrency.
Wieland Müller, Shahper Richter, Michael Leyer, Alexander Richter
Fueled by recent technological developments and reinvigorated through the hype around the Metaverse concept, virtual worlds are becoming increasingly popular as platforms for social interaction, entertainment, and commerce. This study applies transaction cost theory to explore smart contracts' potential in virtual worlds, specifically Decentraland, Sandbox, and Roblox. By assessing process costs, we gauge the feasibility and usability of these decentralized worlds in line with the Metaverse vision. Our findings indicate that the concept and implementation of smart contracts are still nascent and require enhancements from technical, organizational, and user standpoints. Our study contributes to a better understanding of smart contracts' current value in virtual worlds and points to future research directions for optimizing their use.
Bahadir Köksal, Roee Sarel
No abstract is available for this record.
Yuanli Cai, Bingqiao Luo, Qian Wang, Nuo Chen · 6 authors
The utilization of Large Language Models (LLMs) in financial trading has primarily been concentrated within the stock market, aiding in economic and financial decisions.Yet, the unique opportunities presented by the cryptocurrency market, noted for its on-chain data's transparency and the critical influence of offchain signals like news, remain largely untapped by LLMs.This work aims to bridge the gap by developing an LLM-based trading agent, CryptoTrade, which uniquely combines the analysis of on-chain and off-chain data.This approach leverages the transparency and immutability of on-chain data, as well as the timeliness and influence of off-chain signals, providing a comprehensive overview of the cryptocurrency market.CryptoTrade incorporates a reflective mechanism specifically engineered to refine its daily trading decisions by analyzing the outcomes of prior trading decisions.This research makes two significant contributions.Firstly, it broadens the applicability of LLMs to the domain of cryptocurrency trading.Secondly, it establishes a benchmark for cryptocurrency trading strategies.Through extensive experiments, CryptoTrade has demonstrated superior performance in maximizing returns compared to time-series baselines, but not compared to traditional trading signals, across various cryptocurrencies and market conditions.Our code and data are available at https://github. com/Xtra-Computing/CryptoTrade.CryptoTrade makes day-to-day trading decisions.
Carlo Gola, Valentina Cappa, Patrizio Fiorenza, Paolo Granata · 8 authors
Italian Abstract: Il lavoro affronta il tema della governance dei sistemi basati sulla tecnologia dei registri distribuiti (distributed ledged technology, DLT). Questa tecnologia consente di creare un archivio elettronico condiviso e accessibile via internet, in cui sono memorizzate le informazioni in modo sicuro e irreversibile. L’aggiornamento e la gestione del registro avvengono senza ricorrere a un ente terzo fiduciario. L’assenza di strutture organizzative e di governance tradizionali rende complessa la gestione delle DLT. Il lavoro fornisce gli strumenti per comprendere la tecnologia DLT e analizza la governance, sia per le DLT aperte (permissionless), sia per quelle ad accesso limitato (permissioned). Vengono suggeriti diversi approcci per l’applicazione di regole di governo, anche in presenza di DLT con una governance interamente algoritmica (full algorithmic governance). Si mostra che la creazione di strumenti, detti governance tokens, aventi diritti amministrativi e patrimoniali incorporati, favorisce i processi gestionali e di controllo delle DLT. Infine si descrive la struttura di governance di due DLT: Ethereum e Polkadot. English Abstract: This paper deals with the governance of systems based on distributed ledger technology (DLT). This technology enables the creation of a shared electronic archive accessible via the internet, in which information is stored in a secure and irreversible manner. The updating and management of the ledger takes place without resorting to a trusted third party. The absence of traditional organizational and governance structures makes DLT management complex. The work provides the tools to understand DLT technology and analyzes its governance, both for open (permissionless) systems and for those with limited access (permissioned). Different approaches are suggested for the application of governance rules, including for DLT with entirely algorithmic governance. The study shows that the creation of tools known as governance tokens, which incorporate administrative and property rights, facilitates the management and control processes of DLTs. Finally, the governance structure of two DLTs is described: Ethereum and Polkadot.
Ahmad Ghandour
No abstract is available for this record.
Ejike Francis Okaphor, Oforbuike Ngwuta
No abstract is available for this record.
Giuseppe Orlando
No abstract is available for this record.
Yaqiong He, Jinlin Fan, Huaiguang Wu
With the rise of blockchain technology, the security issues of smart contracts have become increasingly critical. Despite the availability of numerous smart contract vulnerability detection tools, many face challenges such as... | Find, read and cite all the research you need on Tech Science Press
Massimiliano Vatiero
Abstract Smart contracts govern transactions using the blockchain as the enforcing medium. They may be a cheaper form of governance of transactions compared to traditional contracts, the hierarchy of firms, and relational contracts. However, I argue that smart contracts do not eliminate transaction costs; rather, they can increase them, particularly when considering the issue of ex‐post efficiency‐enhancing adaptation. Thus, while smart contracts offer a new theoretical and practical way to govern transactions, they are not without challenges and limitations.
Douglas J. Cumming, Johannes Fuchs, Paul P. Momtaz
Abstract We explore the risk–return trade‐off in international regulation of cryptocurrency markets using a unique sample of regulations implemented between July 2018 and April 2023. Various regulation types have reduced risk in cryptocurrency markets while having differential impacts on raw and risk‐adjusted returns. Given the legal challenges for national jurisdictions in regulating international markets, we develop a digital asset regulatory strength index (DARSI) and study the impacts of national regulatory enforcement quality on the risk and return effects of cryptocurrency regulations. We find that strong enforcement quality, measured based on the strength of formal institutions, amplified the regulations' intended effects. The amplification effect is more pronounced for regulations announced by a financial regulator and for more liquid tokens. Consistent with the view that normative compliance‐seeking facilitates the adoption of norms, we also find that cultural uncertainty avoidance amplifies regulations' intended effects.
David Melo, Saul Eduardo Pomares Hernandez, Lil Maria Xibai Rodriguez Henriquez, Julio Cesar Perez Sansalvador
No abstract is available for this record.
Turki Ali Alghamdi, Rabiya Khalid, Nadeem Javaid
Blockchain technology originated alongside Bitcoin as a novel method of conducting financial transactions. It has garnered significant attention from both industry and academia in recent years, emerging as a prominent area of research. It is a decentralized record-keeping system that holds transactional information. The scale of a blockchain network expands according to the growth in the number of nodes and transactions, resulting in issues related to storage capacity, data processing speed, and time delay. These issues have a direct impact on the scalability of a blockchain network. Currently, scalability is one of the prominent concerns in the field of blockchain technology and an active research area. This study conducts a comprehensive survey of the scalability challenges faced by blockchain technology in several sectors. It also examines potential solutions based on consensus mechanisms, smart contracts and directed acyclic graph (DAG). It is observed that the proposed scalability solutions target enhancing system throughput, reducing costs, and improving blockchain efficiency. Therefore, we examine, compare, and evaluate the literature using these specific criteria. Moreover, a survey of existing blockchain based survey papers is presented. A comparative analysis of these survey papers is presented along with their recency score, which is determined by the number of recent publications reviewed in a survey paper. By "recent," we mean the current year (or the publication year of a survey paper) and the three years prior to it. Additionally, this paper offers an elaborate discussion on the forthcoming open research challenges and applications of blockchain.
Khalil Bryant, Yesha Yadav
This chapter explores how decentralized digital asset markets, including decentralized autonomous organizations (DAOs), are reshaping the landscape of venture capital (VC) investment. Traditional VC tools – such as governance rights, exit strategies, and downside protections – often clash with the decentralized, token-based models of crypto markets. The authors analyze the legal, financial, and structural obstacles facing VC firms, including regulatory uncertainty, limited enforceability of term sheets, and reduced applicability of conventional exit paths like initial public offerings. Despite these challenges, the chapter argues that crypto's transparency, community-driven governance and smart-contract flexibility may offer new models of investor engagement. Venture capital may be particularly well-positioned to adapt to and shape these markets, but only with significant rethinking of risk pricing, control rights and legal frameworks. The chapter concludes by identifying pathways – such as tokenization and overseas regulatory regimes – that may support more stable VC involvement in digital assets.
Jingyu Liu, X.-L. Sun, Yunfeng Xia, Yifei Yang · 6 authors
The evolution of Web 3.0 has brought decentralized governance to the forefront, with Delegated Proof-of-Stake (DPoS) mechanisms playing a pivotal role. However, bribery and collusion pose significant risks to the integrity of DPoS systems, undermining the decentralization that is fundamental to Web 3.0’s vision. This paper presents TriGuard, an enhanced governance mechanism designed to curb bribery and promote fair participation within DPoS frameworks. TriGuard integrates a tripartite evolutionary game model with incentive mechanisms tailored for voting participation, bribery reporting, and supervisory actions. Through extensive simulations and theoretical analysis, we demonstrate that TriGuard effectively increases voter engagement, strengthens supervisory oversight, and diminishes the influence of malicious actors. The proposed mechanism reduces centralization risks and enhances security, creating a more decentralized governance framework for Web 3.0 ecosystems.
Husan S. UMAROV
The prospects for the widespread introduction of decentralized finance into global financial markets are analyzed. The aim of the study is to consider the opportunities provided to users and investors by the DeFi ecosystem (decentralized finance), and the potential risks of implementing services, applications, protocols based on decentralized financial instruments in both foreign and Russian financial markets. With the help of the theoretical (analysis, synthesis, abstraction) and empirical (comparison, observation) research methods, opinions of leading domestic and foreign experts on the innovative capabilities of DeFi are presented. Based on up-to-date statistical data from the innovative dApps – DappRadar platform, analytical reviews, conference reports, public speeches and expert interviews, initiatives of the main financial regulator of the United States – The United States Securities and Exchange Commission (The United States Securities and Exchange Commission), the Commodity Futures Trading Commission (CFTC), and the Russian Financial Action Task Force (FATF) group for the development of financial measures to combat money laundering, the author emphasizes the need to implement a regulatory framework to settle the spread of decentralized finance. The resulting conclusions are the inclusion of digital assets in the “anti-money laundering” legislation of Russia, as well as a number of other measures aimed at bringing regulatory clarity to the sphere of DeFi initiatives. The main conclusion of the study highlights the difficulties in the large-scale spread of decentralized finance, which is justified by the direct impact of potential risks of using it, distributed by the author to a number of system groups. As a promising predictive model for the development of DeFi, the author proposes a safe harbor model for tokens developed by Hester Peirce. The relevance and scientific novelty of the research are justified by the possibility of using the achieved results (including in the field of analyzing initiatives recommended by large regulatory institutions in relation to uncontrolled financial markets) to introduce a transparent, open, reliable ecosystem of decentralized finance.