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Invoice Discounting: A Blockchain-Based Approach 发票折扣:基于区块链的方法
Pub Date : 2019-10-25 DOI: 10.3389/fbloc.2019.00013
Nadia Fabrizio, E. Rossi, Andrea Martini, Dimitar Anastasovski, P. Cappello, Lorenzo Candeago, B. Lepri
Invoice discounting is a market with a double-digit potential growth rate in Europe and worldwide in the next years. The main benefit of invoice discounting is the acceleration of cash flow from customers to suppliers: suppliers get advance payments from the bank, rather than waiting for the customers to pay. Hence, thanks to the quick availability of capital, businesses can invest in expansion and growth. More specifically, one of the most relevant problems today is how to provide better and faster invoice discounting services while preventing the double spending and maintaining the risk low. The blockchain frameworks have the potential to provide the right solution and thus to revolutionize the invoice discounting process. The benefits for suppliers, customers and financial institutions are related to the increased transparency added to the whole discounting process and the following risk reduction for the banks due to the capability to enhance the entire process and to reduce the double spending. In our paper, we introduce a blockchain-based invoice discounting system, called Distributed Ledger Invoice, and we propose a novel assessment method for evaluating currently available blockchain solutions for the invoice discounting scenario. Moreover, we also discuss two main issues regarding the information accessibility and the interoperability. In particular, since blockchain is still an emerging technology interoperability is a key factor for the blockchain adoption in inter-banking processes, where different blockchains solutions might be used. In this work we propose a decoupling layer, based on the Attribute-Based Access Control language, to unify the access control to reserved information across heterogeneous blockchains.
发票折扣是未来几年在欧洲和全球具有两位数潜在增长率的市场。发票折扣的主要好处是加速了客户向供应商的现金流:供应商从银行获得预付款,而不是等待客户付款。因此,由于资金的快速可用性,企业可以投资于扩张和增长。更具体地说,今天最相关的问题之一是如何提供更好和更快的发票折扣服务,同时防止重复支出和保持低风险。区块链框架有可能提供正确的解决方案,从而彻底改变发票贴现过程。供应商、客户和金融机构的利益与整个贴现过程增加的透明度有关,并且由于有能力增强整个过程并减少双重支出,银行的风险随之降低。在我们的论文中,我们介绍了一个基于区块链的发票折扣系统,称为分布式账本发票,并提出了一种新的评估方法,用于评估目前可用的发票折扣场景的区块链解决方案。此外,我们还讨论了信息可访问性和互操作性的两个主要问题。特别是,由于区块链仍然是一种新兴技术,互操作性是在银行间流程中采用区块链的关键因素,在银行间流程中可能使用不同的区块链解决方案。在这项工作中,我们提出了一个基于属性的访问控制语言的解耦层,以统一跨异构区块链对保留信息的访问控制。
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引用次数: 6
Blockchain, a Panacea for Development Accountability? A Study of the Barriers and Enablers for Blockchain's Adoption by Development Aid Organizations 区块链是发展问责制的灵丹妙药?发展援助组织采用区块链的障碍和推动因素研究
Pub Date : 2019-10-22 DOI: 10.3389/fbloc.2019.00015
Aiste Rugeviciute, Afshin Mehrpouya
Citation: Rugeviciute A and Mehrpouya A (2019) Blockchain, a Panacea for Development Accountability? A Study of the Barriers and Enablers for Blockchain’s Adoption by Development Aid Organizations. Front. Blockchain 2:15. doi: 10.3389/fbloc.2019.00015 Blockchain, a Panacea for Development Accountability? A Study of the Barriers and Enablers for Blockchain’s Adoption by Development Aid Organizations
引用本文:Rugeviciute A和Mehrpouya A (2019) b区块链:发展问责制的灵丹妙药?发展援助组织采用区块链的障碍与推动因素研究。前面。区块链2:15。doi: 10.3389/fbloc.2019.00015区块链,发展问责制的灵丹妙药?发展援助组织采用区块链的障碍与推动因素研究
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引用次数: 17
Blockchain Technologies and Remittances: From Financial Inclusion to Correspondent Banking 区块链技术与汇款:从普惠金融到代理银行
Pub Date : 2019-10-17 DOI: 10.3389/fbloc.2019.00014
Ludovico Rella
Since their emergence, blockchain technologies have shown potential for financial inclusion and the formalization of remittances. Recently, regulators and practitioners have studied the capabilities of blockchain technologies to streamline and, potentially, replace the infrastructure underpinning cross-border payments and remittances, i.e., correspondent banking. Correspondent Banking Relationships, also called “Nostro-Vostro accounts,” are continuous bilateral arrangements that enable banks to provide services in countries where they do not directly operate. After the Global Financial Crisis, this infrastructure has undergone “de-risking,” i.e., a reduction of correspondent accounts and their concentration in fewer financial institutions, with especially detrimental effects on costs and speed of retail cross-border remittances. The existing literature has mostly focused on the point of sale of remittances, often overlooking correspondent banking. This paper, in contrast, connects remittances, blockchain technologies, and correspondent banking with the growing interest of critical social science in the significance of payment infrastructures for the constitution and configuration of money, finance, and markets. By unpacking the critical case of Ripple, this paper shows that blockchain applications to remittances focus on profits, risks, costs, interoperability, “trapped liquidity,” and “idle capital” in correspondent banking accounts, rather than on financial inclusion per se. In so doing, this paper contributes to critical social studies literature on the formalization of remittances, understood as the transformation of remittances into a market frontier. Blockchain applications are shown to foster, rather than resist, remittances formalization, and they are presently being incorporated into existing infrastructures, business models, and regulatory structures. Rather than representing radically alternative monetary systems, blockchain technologies are the latest iteration of technologies heralding frictionless capitalism. Lastly, this paper shows the tensions and ambiguities inherent to interoperability and formalization. Blockchain technologies are dynamic in a way that problematizes dichotomies such formal-informal and mainstream-alternative. Hence, rather than providing a quantitative assessment of the impact of blockchain technologies, this paper investigates the ambiguities and tensions in the political economy and imaginaries inscribed in the materiality and design of blockchain-enabled payment systems.
自出现以来,区块链技术已显示出普惠金融和汇款正规化的潜力。最近,监管机构和从业人员研究了区块链技术简化并可能取代支撑跨境支付和汇款的基础设施(即代理银行)的能力。代理银行关系,也称为“Nostro-Vostro账户”,是一种持续的双边安排,使银行能够在其不直接经营的国家提供服务。在全球金融危机之后,这种基础设施经历了“去风险”,即减少了代理账户,并将其集中在更少的金融机构中,这对零售跨境汇款的成本和速度产生了特别不利的影响。现有的文献大多集中在汇款的销售点,往往忽视了代理银行。相比之下,本文将汇款、区块链技术和代理银行与关键社会科学对支付基础设施对货币、金融和市场的构成和配置的重要性日益增长的兴趣联系起来。通过对Ripple的关键案例进行分析,本文表明,区块链在汇款方面的应用侧重于利润、风险、成本、互操作性、代理银行账户中的“被困流动性”和“闲置资本”,而不是金融包容性本身。在这样做的过程中,本文对汇款正规化的关键社会研究文献做出了贡献,理解为汇款向市场前沿的转变。区块链应用程序被证明是促进而不是抵制汇款的正规化,它们目前正在被纳入现有的基础设施、商业模式和监管结构中。区块链技术并不代表完全不同的货币体系,而是预示着无摩擦资本主义的技术的最新迭代。最后,本文展示了互操作性和形式化所固有的矛盾和歧义。区块链技术在某种程度上是动态的,它解决了正式-非正式和主流-替代等二分法的问题。因此,本文不是对区块链技术的影响进行定量评估,而是研究了政治经济中的模糊性和紧张关系,以及区块链支付系统的实质性和设计中所包含的想象。
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引用次数: 23
Opportunities and Challenges in Applying Distributed Ledger Technologies in Global Supply Chains for Social Good 分布式账本技术在社会公益全球供应链中的应用机遇与挑战
Pub Date : 2019-09-06 DOI: 10.3389/fbloc.2019.00011
Catherine Thompson
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引用次数: 2
The Ethics of Contentious Hard Forks in Blockchain Networks With Fixed Features 具有固定特征的区块链网络中有争议的硬分叉的伦理
Pub Date : 2019-08-28 DOI: 10.3389/fbloc.2019.00009
Tae Wan Kim, Ariel Zetlin-Jones
An advantage of blockchain protocols is that a decentralized community of users may each update and maintain a public ledger without the need for a trusted third party. Such modifications introduce important economic and ethical considerations that we believe have been not been considered among the community of blockchain developers. We clarify the problem and provide one implementable ethical framework that such developers could use to determine which aspects should be immutable and which should not.
区块链协议的一个优点是,一个分散的用户社区可以在不需要可信第三方的情况下更新和维护一个公共分类账。这样的修改引入了重要的经济和道德方面的考虑,我们认为b区块链开发者社区并没有考虑到这一点。我们澄清了这个问题,并提供了一个可实现的道德框架,这些开发人员可以使用它来确定哪些方面应该不可变,哪些方面不应该不可变。
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引用次数: 9
Parkchain: A Blockchain Powered Parking Solution for Smart Cities Parkchain:智能城市的区块链停车解决方案
Pub Date : 2019-08-28 DOI: 10.3389/fbloc.2019.00006
H. S. Jennath, S. Adarsh, Nikhil V. Chandran, R. Ananthan, A. Sabir, S. Asharaf
With the advances happening in the area of urbanization, with increased demand for dwellings and ever growing number of vehicles on road, finding a parking spot has become one of the major pain points for the citizens. This is mainly due to the limited parking spaces in the urban areas. To overcome this limitation, one solution is to create more parking spaces. In this work we propose a Blockchain based solution, where parking pools can be created by developing a transparent platform where individuals can rent out their unused land for a stipulated amount of time with little or no legal hassles. A non-fungible token system representing unique parking lots will be created for transparency of the entire system. This also has the added advantage of generating revenue from their otherwise unused property. Smart contracts over Blockchain enforces the contractual agreement between the participants ensuring financial transparency in the proposed system.
随着城市化进程的推进,对住房的需求不断增加,道路上的车辆越来越多,寻找停车位已成为市民的主要痛点之一。这主要是由于城市地区的停车位有限。为了克服这一限制,一个解决方案是创造更多的停车位。在这项工作中,我们提出了一个基于区块链的解决方案,通过开发一个透明的平台来创建停车池,个人可以在规定的时间内出租未使用的土地,很少或没有法律纠纷。为了提高整个系统的透明度,将创建一个代表唯一停车场的不可替代的令牌系统。这还有一个额外的好处,那就是从他们未使用的财产中获得收入。区块链上的智能合约执行参与者之间的合同协议,确保拟议系统中的财务透明度。
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引用次数: 16
Complexities of Implementation: Oxfam Australia's Experience in Piloting Blockchain 实施的复杂性:澳大利亚乐施会试点区块链的经验
Pub Date : 2019-08-28 DOI: 10.3389/fbloc.2019.00010
Joshua Hallwright, E. Carnaby
This paper describes one of Oxfam’s pilot projects exploring blockchain technology, focusing on the non-technological, institutional challenges faced by the organisation. There is an emerging literature on blockchain for social good, however, this predominantly focuses on the use cases and issues relating to applying the technology in international development projects. A gap in the literature exists regarding the non-technological aspects of blockchain projects both within the sector and more broadly. Addressing this gap is critically important as many of the promises of blockchain technology will only eventuate in their fullest when whole ecosystems are using the technology. To get there requires a transition period and it is this transition period that holds the key to success for organisations exploring the technology. This paper goes some way to addressing this gap. It does so by describing a specific case study and unpacking some of the organisational challenges associated with implementing a blockchain-based project in the international development and humanitarian sector. This has important implications for the sector as blockchain technology becomes ever more present as a tool capable of reducing inequality and addressing power imbalances. The Oxfam case study described in this paper highlights the difficulty many not-for-profits are having engaging with the technology. The lessons are drawn from a specific use case of a current pilot project using blockchain technology in a cash transfer preparedness project in a small island developing state. Although important and insightful, this paper does not focus on the specifics of the application of the technology but rather discusses the myriad non-technological challenges faced from Oxfam Australia’s perspective. These are categorised into three main areas: awareness and understanding of the technology, capacity constraints of in-house support services in providing relevant support for a nascent technology, and issues related to engaging in non-traditional partnerships. The paper concludes by recommending further areas of research and suggestions to develop practical tools and guidance to help the international development and humanitarian sector navigate this emerging technology.
本文介绍乐施会其中一个探索区块链技术的试点项目,重点介绍该组织面临的非技术和制度挑战。关于区块链用于社会公益的文献正在兴起,然而,这主要集中在与在国际发展项目中应用该技术相关的用例和问题上。在部门内和更广泛的范围内,关于区块链项目的非技术方面的文献存在差距。解决这一差距至关重要,因为区块链技术的许多承诺只有在整个生态系统都使用该技术时才能发挥最大作用。要实现这一目标需要一个过渡期,而正是这个过渡期是探索该技术的组织成功的关键。本文在一定程度上解决了这一差距。它通过描述一个具体的案例研究,并揭示与在国际发展和人道主义部门实施基于区块链的项目相关的一些组织挑战来实现这一目标。随着区块链技术作为一种能够减少不平等和解决权力失衡的工具越来越多地出现,这对该行业具有重要意义。本文中描述的乐施会案例研究强调了许多非营利组织在使用这项技术时遇到的困难。这些经验教训来自目前在一个小岛屿发展中国家的现金转移准备项目中使用区块链技术的试点项目的具体用例。虽然这篇文章很重要,也很有见地,但它并没有把重点放在技术应用的具体细节上,而是从澳大利亚乐施会的角度讨论了所面临的无数非技术挑战。这些问题被分为三个主要领域:对技术的认识和理解,内部支持服务在为新兴技术提供相关支持方面的能力限制,以及与参与非传统伙伴关系有关的问题。该报告最后提出了进一步的研究领域和建议,以开发实用工具和指导,帮助国际发展和人道主义部门驾驭这一新兴技术。
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引用次数: 9
Formal Models of Bitcoin Contracts: A Survey 比特币合约的正式模型:调查
Pub Date : 2019-08-21 DOI: 10.3389/fbloc.2019.00008
Massimo Bartoletti, R. Zunino
Although Bitcoin is mostly used as a decentralized application to transfer cryptocurrency, over the last ten years there have been several studies on how to exploit Bitcoin to execute smart contracts. These are computer protocols which allow users to exchange bitcoins according to complex pre-agreed rules. Some of these studies introduce formal models of Bitcoin contracts, which specify their behaviour in non-ambiguous terms, in some cases providing tools to automatically verify relevant contract properties. In this paper we survey the formal models proposed in the scientific literature, comparing their expressiveness and applicability in the wild.
尽管比特币主要用作转移加密货币的分散应用程序,但在过去十年中,关于如何利用比特币执行智能合约的研究已经进行了几次。这些是允许用户根据复杂的预先商定的规则交换比特币的计算机协议。其中一些研究引入了比特币合约的正式模型,这些模型以明确的方式指定了它们的行为,在某些情况下提供了自动验证相关合约属性的工具。本文综述了科学文献中提出的形式模型,比较了它们在野外的表达能力和适用性。
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引用次数: 8
An Analysis of Non-standard Transactions 非标准交易分析
Pub Date : 2019-08-13 DOI: 10.3389/fbloc.2019.00007
Stefano Bistarelli, Ivan Mercanti, Francesco Santini
In Bitcoin, the most common kind of transactions is in the form “Bob pays Alice”, and it is based on the Pay to-Public Key Hash(P2PKH) script, which are resolved by sending the public key and a digital signature created by the corresponding private key. P2PKH transactions are just one among many standard classes: a transaction is standard if it passes Bitcoin Core’s IsStandard() and IsStandardTx() tests. However, the creation of ad-hoc scripts to lock (and unlock) transactions allows for also generating non-standard transactions, which can be nevertheless broadcast and mined as well. In this work, we explore the Bitcoin block-chain with the purpose to analyze and classify standard and non-standard transactions, understanding how much the standard behaviour is respected.
在比特币中,最常见的交易形式是“鲍勃支付给爱丽丝”,它基于支付到公钥哈希(P2PKH)脚本,通过发送公钥和相应私钥创建的数字签名来解决。P2PKH交易只是众多标准类中的一种:如果交易通过了比特币核心的IsStandard()和IsStandardTx()测试,那么交易就是标准的。然而,创建临时脚本来锁定(和解锁)事务也允许生成非标准事务,这些事务也可以广播和挖掘。在这项工作中,我们探索比特币区块链,目的是分析和分类标准和非标准交易,了解标准行为在多大程度上受到尊重。
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引用次数: 16
Blockchain and Public Record Keeping: Of Temples, Prisons, and the (Re)Configuration of Power 区块链和公共记录保存:寺庙、监狱和权力的(重新)配置
Pub Date : 2019-07-12 DOI: 10.3389/fbloc.2019.00005
V. Lemieux
This paper discusses blockchain technology as a recordkeeping system, linking recordkeeping to power of authority, veneration (temples) and control (prisons) that configure and reconfigure social, economic and political relations. It discusses blockchain technology as being constructed as a mechanism to counter institutions and social actors that currently hold power, but whom are nowadays often viewed with mistrust. It explores claims for blockchain as a recordkeeping force of resistance to those powers. Using an archival theoretic analytic lens, the paper evaluates claims that blockchain technology can support the creation and preservation of trustworthy records able to serve as alternative sources of evidence of rights, entitlements and actions than that which is provided by centralized public repositories of records, such as archives and public registries. The analysis problematizes such claims, pointing to shortcomings in the design, implementation and governance of blockchain platforms that fall short of the ideal of trustworthy public recordkeeping, but suggesting that through unveiling these weaknesses, it may be possible for blockchain recordkeeping to address the ills of current, centralized approaches to public recordkeeping.
本文将区块链技术作为一种记录保存系统进行讨论,将记录保存与权力、崇拜(寺庙)和控制(监狱)联系起来,从而配置和重新配置社会、经济和政治关系。它讨论了区块链技术被构建为一种机制,以对抗目前掌握权力的机构和社会行动者,但他们现在经常被不信任。它探讨了区块链作为抵抗这些权力的记录保存力量的主张。本文使用档案理论分析的视角,评估了区块链技术可以支持创建和保存可信记录的说法,这些记录可以作为权利、权利和行动的替代证据来源,而不是由集中的公共记录存储库(如档案和公共登记处)提供的证据来源。该分析对这种说法提出了质疑,指出了区块链平台的设计、实施和治理方面的缺陷,这些缺陷达不到值得信赖的公共记录保存的理想,但建议通过揭示这些弱点,区块链记录保存有可能解决当前集中的公共记录保存方法的弊病。
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引用次数: 14
期刊
Frontiers Blockchain
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