Follow blockchain research across journals, conferences, and preprint repositories.
1,173 results · page 19 of 49
Simón Fernández-Vázquez, Rafael Rosillo, Paolo Priore, Javier Puente
No abstract is available for this record.
Puneet Gill, Indrani Ray, Alireza Lotfi Takami, Mahesh Tripunitara
No abstract is available for this record.
Abdelatif Hafid, Abdelhakim Hafid, Abdelhakim Hafid, Abdelhakim Hafid · 5 authors
No abstract is available for this record.
Archana Jain, Chinmay Jain, Karolina Krystyniak
We study the determinants of transaction fees in the Bitcoin and Ethereum blockchains, particularly focusing on the recent Merge – Ethereum's transition from a Proof-of-Work to a Proof-of-Stake consensus mechanism. Using multivariate regression analysis, we find that blockchain fees in USD increase with network congestion, measured by the mempool count, in a non-linear manner as hypothesized by Huberman, Leshno, and Moallemi (2021). Additionally, the fees are positively influenced by the respective native currency's returns over the past six months. The Merge resulted in a fee reduction for both Bitcoin and Ethereum blockchains.
Yu Gong, Tianyu Zhang, Peiwu Dong, Xiangfeng Chen · 5 authors
This paper presents a multiple case study analysis on how blockchain technology (BCT) has been adopted in organisations to support supply chain finance (SCF) based on secondary data. Findings from the multiple case analysis indicate that BCT can cope with challenges in traditional SCF, including financing range, financing cost, financing efficiency, and risk management. Before the implementation of the BCT, multiple parties’ decision on jointly operating the blockchain-based SCF platform enables them to take full advantage of their inherent resources and blockchain characteristics. Also, both the BCT and enterprises need internal and external adjustments, which are interrelated. The unexpected issues may emerge from the pilot stage, but the adjustments are still involved in the previous stages, leading to a feedback loop from the pilot stage to the redefining/restructuring stage. To realise large-scale implementation of blockchain-based SCF solutions, more stakeholders need to be motivated to adopt the BCT, and new laws and regulations should be developed to promote the BCT adoption. Based on these findings and by applying innovation adoption theory, an overall implementation framework is proposed to provide a meaningful guidance for organisations to adopt BCT in SCF.
Rita Maria Difrancesco, Purushottam Meena, Gopal Kumar
No abstract is available for this record.
Dnyaneshwar Jivanrao Ghode, Vinod Yadav, Rakesh Jain, Gunjan Soni
Purpose In the era of digitization, blockchain technology (BCT) has gained huge attraction in a variety of business processes including operations and supply chains (SC) of different industrial sectors. This paper aims that the adoption of BCT in SC enables the industries to integrate the stakeholders and its distinct features enhance the performance of SC. Design/methodology/approach An attempt is made to develop a BCT platform a pilot case of bearing-SC and identify the challenges and their solutions in the integration of BCT with SC. Moreover, the impact of BCT on measures of SC performance is also studied. Findings The results show enhanced transparency in the transactions, better security of the data, diminished latency period for transfer of information, improved traceability of the bearing, reduced time for payment transfer process and decreased nonvalue-added activities. Ultimately, overall trust of the customer can be improved by the integration of BCT in bearing-SC. Originality/value In the same way, BCT can be applied to SC of other components to assure the product quality to the end-users.
Paolo Bottoni, Claudio Di Ciccio, Remo Pareschi, Domenico Tortola · 6 authors
Smart contracts show a high potential to make supply chain management strategies epochally leap towards higher levels of productivity, not only in the functioning of production processes but also in terms of product innovation and overall economic returns. This article illustrates the principle of Income Sharing as a highly performing economic strategy for supply chains with a natural implementation in blockchain smart contracts. It proposes a blockchain-based architecture that uses smart contracts to implement various algorithmic versions of the Income Sharing principle among companies participating in a supply chain. The formation of the total income and its consequent redistribution are calculated taking into account the role of the technological platform automating these procedures, which therefore becomes a party to the inter-company business project of a supply chain in the alternative roles, as feasible in business practice, of Blockchain-as-a-Service and Blockchain-as-a-Partner. The approach is implemented on Hyperledger Fabric, the most widespread platform for private and consortium blockchains. We compare and justify this design choice with the alternative given by public blockchains, with specific attention to Ethereum.
Xiao Wen Lu, Youssef Tliche, Mohammadali Vosooghidizaji, Atour Taghipour
New technology and revolution in digital tools can be considered as the enablers to promote the performance of the global supply chain by integrating the actors. Among these technologies is the blockchain, first and foremost a technology for storing and transmitting information. This technology offers high standards of transparency and security in a decentralized environment. More concretely, the blockchain allows its users—connected in a network—to share data without an intermediary. The cryptocurrencies are new electronic currencies that use blockchain technology to transfer the ownership of cryptos between their different owners. The application of blockchains in cryptocurrency reduces the risk of sharing information and simplifies transaction processing thanks to the secured decentralized environment. The objective of this chapter is to provide a literature review that synthesizes the knowledge of using the blockchains in cryptocurrency. The results of the review can be used by academics and practitioners.
Weihua Liu, Xinyu Liu, Xiaoran Shi, Jiahe Hou · 6 authors
No abstract is available for this record.
Xiang Li, Qing Liu, Shiqing Wu, Zehong Cao · 5 authors
No abstract is available for this record.
Ahmed Afif Monrat, Olov Schelén, Karl Andersson
Blockchain technology has been generating great interest by a variety of industry sectors. Realizing the strength of blockchain technology beyond its successful application in the cryptocurrency arena, researchers have been evaluating and using blockchain for applications such as supply chain management, the energy industry, health sectors, and much more. Some of the features include smart contracts, decentralization, consensus, immutable distributed ledgers, cryptographic hashing, and digital signatures. There are multiple types of blockchain and different consensus models. However, it is often a significant undertaking to determine if an application requires a blockchain. What kind of blockchain and consensus model is best suited for a given scenario? This paper addresses this challenge by evaluating different blockchain solutions along with the consensus models to determine the applicability for different use cases. We propose a guideline and applicability analysis framework (AAF) to determine whether an application needs a blockchain solution or not. The AAF is divided into 6 domains, 11 subdomains, and 45 controls. It is designed to ingest detailed user requirements to perform a weighted evaluation that is built on mathematical constructs to determine the scenario in which a blockchain-based solution is appropriate. Moreover, this article also includes an example of evaluating applicability through AAF with the help of a use-case scenario.
Reza Lotfi, Mohsen Rajabzadeh, Abolfazl Zamani, Mohammad Sadra Rajabi
No abstract is available for this record.
Xiaofeng Zhang, Li Ling
The supply chain plays an important role in daily life, and its traceability ensures product quality and safety. Therefore, an efficient and reliable solution to improve supply chain traceability is urgently needed. Because of its advantages of being decentralized, tamper-proof, and transparent, the emerging blockchain technology should address the problems of unreliable data and low tracking efficiency in traditional traceability systems. This paper explores blockchain-based supply chain traceability solutions, reviews recent research, and identifies challenges. First, the basics of blockchain are introduced, and the traditional traceability model and stakeholder needs are described. Then, the existing publications and enterprise applications are reviewed and analyzed in detail. Using blockchain is found to bring many benefits. It is also found that the current academic solutions are mostly based on mainstream blockchain platforms and lack specific and comprehensive evaluation. Finally, challenges and future research questions are discussed. Future research could focus on designing targeted consensus mechanisms, designing appropriate access control, the role of regulators in the supply chain, etc. This review shows that blockchain has great potential to address traceability issues, but many challenges remain.
Bengang Gong, Huaimiao Zhang, Yiling Gao, Zhi Liu
No abstract is available for this record.
Mahdi Arabian, Mazyar Ghadiri Nejad, Reza Vatankhah Barenji
No abstract is available for this record.
Ye Gao, Hongwei Gao, Xiao Han, Fanjun Yao
No abstract is available for this record.
Rajesh Kumar Singh, Ruchi Mishra, Shivam Gupta, Archana A. Mukherjee
No abstract is available for this record.
Mahmoud Ashraf, Islam Ali
Disruption risks may arise in a project-based supply chain due to the involvement of various actors, e.g. suppliers and transport service providers, along the chain besides its decentralised structure. This paper addresses monitoring the project completion time estimates at different stages of a project lifetime through tracking package ownership transfer events. We track the ownership transfer events by employing blockchain technology and smart contracts. Blockchain technology offers data security and builds trust along the supply chain. Consequently, a blockchain-enabled tracking system for package ownership transfer enhances real-time monitoring of project completion time estimates. In addition, this paper uses a simulation-based approach to quantify the acquired benefits from a real-time blockchain-enabled traceability system in a project-based supply chain. The proposed approach considers a straightforward supply chain consisting of two parties. Our proposed approach examines multiple disruption scenarios to assess the impact of blockchain technology integration on the project completion time estimates accuracy. The results show, for all scenarios, the superior performance of the blockchain-enabled traceability system compared to the baseline model with limited tracking of ownership transfer events.
Agya Pathak, Sameer Shrivastava, Palempati Harsha Vardhini, Abhinay Meka · 7 authors
The coronavirus pandemic caused global health and economic disruption of an unknown scale. Several issues with the pharmaceutical supply chain such as the counterfeiting of drugs came to light in these dire times. While continual efforts are being applied in order to effectively treat and annihilate the coronavirus, so are the efforts of supply chains to prepare for patient care in case of a recurrence. The requirement of superior quality medicines has sky rocketed, subsequently, so has the influx of counterfeited drugs. The security of the pharmaceutical supply chain is unquestionably necessary due to the large scale increase in demand for drugs. Tampering of the supply chain is not easily detectable when unethical practices are suspected currently. A radical and innovative method that contains the potential to overcome the challenges of securing the pharmaceutical supply chain is the blockchain technology. So, our proposed solution amalgamates blockchain technology into the drug supply chain to make it tamper-proof. This study proposes a system that harnesses blockchain's properties to ensure supply of safe and traceable pharmaceuticals from end to end. The smart contracts designed have been deployed on a local blockchain using Ganache. Results of our experimentation indicate with certainty that not only is this solution feasible but it is more secure than the present day scenario of the pharmaceutical supply chain.
Aswini Yadlapalli, Shams Rahman, Pinapala Gopal
Purpose The aim of the research is to identify and prioritise the implementation challenges of blockchain technology and suggests ways for its implementation in supply chains. Design/methodology/approach Underlined by the technology, organisational, and external environment model, a conceptual framework with four challenge categories and sixteen challenges is proposed. Data collected from three stakeholder groups with experience in the implementation of blockchain technology in India is analysed by employing an analytical hierarchy process method-based case study. Further, a criticality–effort matrix analysis is performed to group challenges and suggest ways for implementation. Findings The analysis revels that all stakeholders perceive complexity challenge associated with the technology, organisational structure, and external environment, and issues of compatibility with existing systems, software, and business practices to be high on the criticality and effort scales, which thus require meticulous planning to manage. Likewise, top-management support issues related to insufficient understanding of how technology fits with the organisation’s policy and benefits offered by the technology requires high effort to address this challenge. Research limitations/implications The results were obtained by focusing on the Indian context and therefore may not apply to other nations’ contexts. Practical implications By investigating the challenges that the developers, consultants, and client organisations need to address, this study assists managers in developing plans to facilitate coordination among these organisations for successful blockchain implementation. Originality/value To the authors’ knowledge this study is the first to identify and prioritise the challenges from the perspectives of multiple stakeholder groups with experience in blockchain technology implementation.
Yongjian Li, Ting Chen
Purpose The advantages of blockchain technology are being widely discussed by academics, the business community and government, because blockchain can promote data sharing, optimise business processes, reduce operation costs, improve collaborative efficiency and build credible systems. The supply chain is becoming a key area for the application of blockchain technology. However, few studies have discussed the effect of such emerging technologies on the supply chain in depth. Therefore, this paper aims to analyse how blockchain empowers supply chain and promotes supply chain management. Design/methodology/approach Based on a review of relevant literature and blockchain applications in practice, this paper analyses the development and research status of blockchain technologies. In addition, considering the different operational processes within the supply chain, the authors discuss the opportunities and challenges of blockchain technologies, such as the transparency of supply, intelligent manufacturing, the security of logistics, the platformisation of sales and the ecology of governance. Findings The authors find that information sharing, information traceability and trust establishment are the key categories of research achievements and applications of supply chain management. The central issues for blockchain researchers are the authenticity of transaction data, the traceability of long supply chains and the establishment of trust for all participants. Originality/value From the practical and theoretical perspectives, this paper shows the development of blockchain technologies to clarify the challenges, opportunities and prospects. This paper elucidates and facilitates the development of emerging interdisciplinary research and the practice of supply chain.
Yutong Bai, Yang Liu, Wee Meng Yeo
As an emerging information technology, blockchain has aroused extensive discussions around the world and been suggested as a solution to address current issues in supply chain finance (SCF). The Chinese government also attaches great importance to this technology, and many Chinese state-owned enterprises have invested in establishing their own blockchain research and development centres. However, there is a lack of studies on identifying challenges when deploying this technology; theoretical framework and conceptual exposition are also scarcely seen. Therefore, the aim of this study is to investigate the challenges and obstacles in the adoption of blockchain technology in SCF. An exploratory case study of a Chinese state-owned enterprise was conducted to build up an initial conceptual framework. Semi-structured interview was applied to collect data from the case firm's employees, top management, and technical specialists. The results of the analysis indicate that in the adoption of blockchain technology, there are technological, operational, and other challenges. From a technological perspective, framework identification, cross-chain interoperability, and data governance are major barriers; whereas, from an operational perspective, the new business process and transformation in the entire supply chain are identified as challenges. Besides, other obstacles such as the elimination of jobs and regulatory issues are also not neglectable. This study contributes to research on blockchain and supply chains by shedding light on the challenges of blockchain adoption through an exploratory case study of a Chinese state-owned enterprise. A conceptual framework was generated as a basis for future research, and the findings also provide insights for companies that may or are planning to adopt blockchain technology.
Yuan Huang, Rong Wang, Xiangping Chen, Xiaocong Zhou · 5 authors
Developers may not understand the Gas mechanism of Ethereum, so many smart contracts consume a lot of unnecessary Gas. To address this issue, existing studies have proposed several methods to optimize the code of the contracts to reduce Gas consumption. To verify the effectiveness, most of the methods deploy a private chain to make verification. However, a more reasonable way is to employ the real transactions on Ethereum to trigger the contracts before and after optimization, and then compare the Gas consumption. To achieve this goal, we proposed a method, GOV, to estimate the Gas consumption of the optimized contract by using the real transactions on Ethereum. Our method enables the optimized contract to follow the execution path of the contract before optimization, thus solving the problem of inconsistent execution paths before and after optimization. A preliminary evaluation shows that GOV can effectively estimate the Gas consumption of optimized contract.