Blockchain Papers

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Ms. Mithuna R, Mr. Mano

The global trade finance ecosystem, long characterised by manual documentation, multi-layered intermediation, and protracted settlement cycles, is undergoing a profound structural transformation through the adoption of blockchain-based smart contracts. This article examines two principal objectives: (1) the extent to which smart contracts automate traditional trade finance processes, and (2) the degree to which they reduce systemic dependency on financial and documentary intermediaries. Drawing upon peer-reviewed scholarship, institutional reports, and empirical findings published between 2022 and 2025, the study undertakes a critical analysis of the operational, economic, legal, and societal dimensions of this technological shift. Findings indicate that while smart contracts demonstrably compress settlement cycles, reduce transaction costs, and enhance transparency, significant challenges persist concerning legal enforceability, regulatory fragmentation, and cybersecurity vulnerability. The article concludes with implications for policymakers, financial institutions, SMEs, and society at large.

Vladyslav Khvostenko, Olexander Shmatko, Yelyzaveta Sevriukova, Illia Bukatych · 6 authors

Smart contracts are key elements of decentralized financial protocols, but security incidents are usually caused not by single vulnerabilities, but by combined scenarios in which several threats interact and reinforce each other. The article proposes a synergistic graph model of threats in DeFi smart contracts, which formalizes the set of threats, their impact on information security properties (confidentiality, integrity, availability, authenticity, accountability, and auditability), and reflects the projection of compromised properties onto security domains (CS/IS/SI). The proposed approach differs in that it introduces synergistic links between threats as a separate type of edges in the graph, which allows reproducing characteristic trajectories of combined attacks and explaining the mechanisms of their implementation. In particular, a typical chain of economic attacks is shown, in which an attacker uses an instant unsecured loan to manipulate the market price, which leads to a distortion of the oracle's price data and, as a result, creates conditions for exploiting logical defects in the smart contract or abusing liquidation mechanisms. The proposed model can be used as a methodological basis for risk analysis, prioritization of smart contract audits, and planning of protective measures in DeFi ecosystems.

D. A. Artemenko, V. S. Vorobev

The article studies the role of finance control in elaborating the effective system of digital asset insurance. Special attention was paid to analyzing regulatory barriers hindering the development of crypto- currency and search for insurance solutions to minimize finance risks of digital economy. Key problems were analyzed, including fragmental nature of legal regulation, absence of unique standards in defining crypto-assets and poor coordination between national and international regulatory approaches. The focus was made on institutional problems, such as drawbacks in court practice, shortcomings in KYC/AML procedures and deficit of specialized compensation mechanisms for investors. On the basis of comparative analysis of regulatory practices in different countries the authors proposed ways to harmonize finance control, including elaboration of unique standards of digital asset insurance, working-out cross-border platforms to exchange information concerning cyber-incidents and introduction of ‘regulatory sandboxs’ to test innovation insurance products. The importance of adapting international recommendations FATF and IOSCO to specific features of decentralized finance systems was underlined. Practical significance of the research consists in advancing mechanisms, which can reduce legal uncertainty, strengthen confidence of investors and integrate crypto-insurance in the global finance infrastructure. Implementation of these steps can give an opportunity to raise sustainability of digital economy to cyber-risks and create conditions for developing insurance solutions of the new generation, such as parametric insurance and decentralized autonomous insurance organizations (DAIO).

P. P. Latkovskyi

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Le Thi Minh

Currently, climate change has become one of the most pressing issues facing the world. It affects everyone on this planet and could have serious long-term consequences for humanity if left unresolved. Carbon credit trading is one of the measures contributing to emission management. With technological development, carbon credit trading can be conducted via smart contracts. The strengths of blockchain technology, such as transparency, secure record-keeping, and decentralization, are advantages for carbon credits. However, there are still issues that need to be addressed. This article researches smart contracts as a legal tool in carbon credit trading and identifies areas for improvement.

Victor James Uko, Sharon Oluwaseun, Amarachi Nelly Charles, Emurode Williams · 5 authors

The rapid proliferation of digital technologies has profoundly reshaped the financial services sector, introducing novel service delivery models, market participants, and transactional infrastructures that challenge the foundational premises of existing regulatory frameworks. This review examines the multidimensional dynamics of digital transformation in financial services, with particular attention to the regulatory and consumer protection implications arising from the emergence of fintech ecosystems, artificial intelligence-driven financial products, decentralized finance platforms, open banking architectures, and embedded financial services. Drawing on a synthesis of contemporary academic literature, regulatory reports, and industry analyses, the review maps the evolution of digital financial services across developed and emerging economies, identifies structural gaps in regulatory capacity, and evaluates the adequacy of prevailing consumer protection mechanisms in the face of accelerating technological change. Key themes include the challenge of regulatory arbitrage, the governance of algorithmic and AI-based financial decision-making, data privacy and cybersecurity risks borne by consumers, the financial inclusion implications of digital transformation, and the emerging paradigms of regulatory technology and supervisory technology as adaptive governance tools. The review concludes by proposing a research agenda oriented toward the development of adaptive, proportionate, and technology-neutral regulatory frameworks capable of fostering innovation while safeguarding systemic stability and consumer welfare.

Kunal Sharma, Kunvar Dushyant Singh

This paper is written to evaluate and describe the legality of ‘smart contracts and DAOs. While traditional contracts provide general foundational elements which only fulfills the legal relation criteria. Application of these principles to blockchain based smart contract is very equivocal although, the concept itself provides numerous pros like technological efficiency and self-execution etc. This paper highlights the need to bridge the gap between legal doctrine and code-based execution through the development of legal framework. Furthermore, it explores the critical position of DAOs, which operate without centralized governance. By analyzing emerging global approaches and regulatory opinions, this paper highlights the essential need of innovation and compliance in this concept.

Meng Hwee NEO

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Mohd Saleem, Sohrab, Matloob Ullah Khan, Faizan Khan Sherwani

Key components of blockchain technology, DeFi represent a revolutionary advance in digital contracts and automated trades, and they are integrated into decentralized networks such as Ethereum. These self-executing contracts eliminate the need for middlemen by autonomously enforcing specified terms. This paper offers a thorough analysis of Decentralized Finance (DeFi), smart contracts, covering their underlying theories, technological foundations, wide range of applications, and ramifications in context of financial inclusion and investment. In order to clarify the workings and practical applications of such innovations, the research technique comprises a methodical evaluation of the literature, an examination of case studies, and an amalgamation of empirical data. This study evaluates their effects on efficiency, transparency, and trust in international transactions by looking at how they are revolutionizing industries like finance, and decentralized governance. It also thoroughly examines security considerations, including best practices and vulnerabilities, as well as regulatory issues and new developments.

Francisco R. Trejo-Macotela

This chapter examines the transformative role of blockchain as a foundational digital infrastructure for decentralised energy markets, assessing its capacity to enhance transparency, verifiability, and automated compliance in peer-to-peer electricity trading. It explores how distributed ledgers, smart contracts, and tokenised energy attributes may restructure established market arrangements by enabling immutable data governance and algorithmic execution of regulatory obligations. The analysis places particular emphasis on legal and institutional challenges, including data-protection requirements, cybersecurity vulnerabilities, allocation of liability, and the need for coherent regulatory alignment across jurisdictions. Drawing upon comparative international experiences, the chapter identifies governance approaches that support responsible experimentation while safeguarding consumer rights and system integrity. It ultimately argues that blockchain can foster resilient and equitable energy transitions when embedded within adaptive and normatively robust legal frameworks.

Qianyu Chen

Blockchain technology has a significant impact on smart contracts. In practice, they reflect the redistribution and organization of the rights and obligations of the contract parties, but the existing legal regulations regarding their functioning are still underdeveloped. With this regard, it is highly important to consider the legal effect of smart contracts in commercial transactions. The current research uses the methods of text-mining such as Chinese word segmentation, keyword extraction, co-occurrence network analysis, and LDA topic clustering to derive the factors that contribute to the legal effect of smart contracts in commercial transactions and then explores the relationships between those factors using association-rule mining in order to reveal the particularities of their legal effect. The experimental outcomes demonstrate that there are four critical areas of concern related to smart contracts: validity determination, transaction security, responsibility definition, and risk prevention and control. There are altogether 11 LDA topics and 33 dispute focus points of the legal effect of smart contracts in business transactions. Of them, the most significant share belongs to the disputes based on professional ethics and responsibility boundaries, which amount to 52.83 percent. The obtained result indicates that the professional ethics and the demarcation of responsibilities are very important aspects of the development of the legal effect of smart contracts.

Res. Malak Sawalha

The study aimed to highlight the importance of smart contracts in our digital age, This is achieved by exploring the possibility of finding a legal framework capable of creating a balance between the use of smart contracts on the one hand and protecting the rights of its parties on the other. The descriptive-analytical approach was adopted when analyzing legal and jurisprudential opinions on whether a smart contract is considered a real contract. One of the main conclusions reached was that a fully automated smart contract is considered a legal contract in the true sense of the word, and therefore the study recommended the need to enact international and national legislation regulating the provisions of this contract.

Purbita Das

The emergence of blockchain technology has fundamentally transformed the architecture of trust, transparency, and enforcement in legal transactions. By enabling decentralized, immutable, and cryptographically verifiable records, blockchain challenges traditional legal institutions that have historically relied on intermediaries such as courts, financial institutions, and regulatory authorities to establish trust and validate transactions. In this evolving digital ecosystem, smart contracts—self-executing agreements embedded in blockchain code—further redefine contractual relationships by automating performance, reducing transaction costs, and minimizing the need for human intervention. This article critically examines the legal implications of blockchain and smart contracts, with particular emphasis on their impact on foundational principles of contract law, mechanisms of dispute resolution, regulatory compliance, and evidentiary standards. It interrogates whether algorithmic execution can adequately substitute for legal interpretation and equitable considerations traditionally exercised by courts. Additionally, the article explores persistent challenges, including issues of enforceability, jurisdictional ambiguity in cross-border transactions, technological vulnerabilities, and the rigidity of coded agreements. While blockchain technology promises increased efficiency, transparency, and security in legal transactions, it simultaneously raises complex questions regarding legal accountability, allocation of liability, and the adaptability of existing legal frameworks. The analysis underscores that uncritical reliance on technological solutions may undermine core legal values such as fairness and justice. Accordingly, the article concludes that a hybrid legal approach—integrating technological innovation with established doctrinal safeguards and regulatory oversight—is essential for responsibly shaping the future of legal transactions in an increasingly digital society.

Froilan Delute Mobo

The integration of smart contracts in energy markets marks a transformative shift toward decentralization, automation, and enhanced transactional efficiency. As blockchain-based technologies are increasingly used to facilitate peer-to-peer energy trading, grid management, and decentralized energy exchanges, questions of legal enforceability, liability, and dispute resolution remain critical. This chapter aims to examine the foundational legal and regulatory considerations that govern smart contracts within the context of energy markets. It will explore how traditional legal principles interact with emerging technologies, including the enforceability of self-executing code under contract law, jurisdictional challenges, and the applicability of consumer protection and liability statutes. Case studies from pioneering jurisdictions such as the European Union, the United States, and select Asia-Pacific countries will be analyzed to provide comparative insights.

Leeladhar Chourasiya, Mr. Anand Jawdekar, Mr. Sanjay Patsariya, Ms. Aparajita Biswal · 7 authors

The blistering development of the decentralized technologies is transforming the conceptual and functional limits of the contemporary digital ecosystems. One of such innovations is blockchain, which is being presented as a core infrastructure of facilitating autonomous, trustless, and self-organizing systems, which has also been emphasized in recent academic conversations. The paper will examine how blockchain will be used to lay the foundations of autonomous societies where governance, economic dealings and social interactions will be implemented in the absence of a centralized force. The suggested framework is based on decentralized ledger technology, smart contracts, consensus mechanism, in order to promote transparency, security, and accountability on digital communities. The paper highlights the role of blockchain platforms (especially Ethereum-style architectures) in the development of decentralized autonomous organizations (DAOs) that serve as building blocks to bigger social organizations. Identity management, decentralized models of governance, token-based economies, and trustless interactions are some of the critical components that are analyzed. Moreover, the paper also looks at how emerging technologies such as artificial intelligence and distributed storage systems can be integrated to make autonomous environments more scalable, adaptable, and make decisions. Issues concerning scalability, regulatory limitations, interoperability, and ethical aspects are also presented and possible solutions and future research areas specified. The results indicate that blockchain infrastructure has the capacity to reinvent the social structure and provide decentralized, robust, and participative digital economies. The article is a contribution to the existing literature on next-generation sociotechnical systems and a strategic roadmap of fully autonomous digital societies development.

Milana Orujova, Zafar Cafarov, Sevinc İsmayilova, Jamila Abdurahimova · 5 authors

The integration of smart contracts into blockchain-based digital educational platforms enables radically increased transparency, security, and automation of processes: from issuing verifiable certificates and automatic course enrollment to distributing scholarships and motivating students through tokenized rewards. This article examines the theoretical foundations of smart contracts, their use, architectural solutions, and implementation, as well as a practical section with an implementation example in Solidity. These factors determined the primary objective of this work: a conceptual analysis of the integration of blockchain technologies into online educational platforms. The methodological framework is based on a comprehensive approach, including the systematization of theoretical data and a critical analysis of the implementation of decentralized ledgers in modern digital systems. Particular attention is paid to the analysis of mechanisms for ensuring the immutability of academic achievement data, thereby eliminating the possibility of diploma falsification. A model of a decentralized autonomous educational environment facilitating the development of individual learning paths is also proposed. An example of successful cases of integrating distributed ledgers into a learning management system (LMS) is provided, demonstrating a reduction in administrative costs. The conclusion, of course, summarizes the research and outlines prospects for scaling similar systems within the global educational space.

Nabeel Mahdi Althabhawi, Ra’ed Fawzi Aburoub, Rizal Rahman, Faris Kamil Hasan Mihna · 5 authors

Smart contracts raise persistent challenges regarding compliance with traditional contract formalities, including writing, signature, notarization, and in certain transactions, registration. These issues are particularly significant in high-value and public-facing transactions such as real estate, where formalities determine legal validity, evidentiary sufficiency and publicity effects. While existing scholarly work has examined these challenges from either doctrinal or technological perspectives, limited attention has been given to how the functional roles of formalities interact with blockchain architecture, practitioner perceptions and institutional legal frameworks. This study addresses this gap through a mixed-methods approach combining doctrinal legal analysis with qualitative socio-legal research based on 27 semi-structured interviews with legal professionals including attorneys, judges, and academic scholars. The analysis is grounded in a civil law framework, with particular reference to the Jordanian legal system, while references to the European Union’s eIDAS Regulation are used illustratively to demonstrate regulatory approaches to digital authentication. The findings demonstrate that blockchain-based systems can effectively support the evidentiary and attribution functions of contractual formalities through cryptographic verification, consensus mechanisms, and automated execution. However, they do not independently satisfy formalities that perform cautionary, constitutive, protective or public order function, namely notarization and registration, which remain dependent on institutional validation and legal recognition. The analysis further shows that practitioner concerns reflect not only doctrinal constraints but also institutional roles and varying levels of technical familiarity. To address these limitations, the study proposes a function-based analytical framework for evaluating smart contract formalities and identifies two complementary pathways for legal adaptation: (i) institutional integration, including registry-linkage systems and hybrid contracts; and (ii) technological adaptation, including digital authentication frameworks and legal oracles that connect on-chain execution to off-chain legal conditions. The study concludes that smart contract formalities’ challenges arise not solely from technological limitations, but from the interaction between legal doctrine, institutional structures, and system design. It advances a functional framework for aligning automation with the evidentiary, protective, and publicity functions of contractual formalities.

Ching-Hsi Tseng, Chi-June Chen, Shyan-Ming Yuan

The proliferation of digital assets has catalyzed a profound decoupling between intangible property and traditional inheritance jurisprudence. Under the existing legal framework in Taiwan, practitioners must rely on the testamentary forms prescribed in Article 1189 of the Civil Code, which are fundamentally ill equipped to handle cryptographic assets. Specifically, Notarized Wills (Article 1191) necessitate full disclosure to a notary, creating a “Privacy–Security Paradox” where revealing private keys exposes assets to misappropriation. Conversely, while Sealed Wills (Article 1192) offer confidentiality, they are plagued by risks of physical degradation and technical non-executability. This study proposes zkWill, an EVM-compatible decentralized testamentary framework designed to bridge these structural gaps. By leveraging Zero-Knowledge Proofs (ZKPs), zkWill achieves a state of “blind compliance,” verifying that a sealed will meets the statutory requirements of the Civil Code without disclosing its underlying content. The system integrates the Permit2 protocol for secure asset migration and combines AES-256 encryption with IPFS to immunize testaments against centralized storage failures. Unlike conventional services that demand custodial trust, zkWill employs decentralized oracles to trigger automated execution, ensuring legacy distribution without compromising wallet private keys. Empirical data from the Arbitrum Sepolia testnet confirms that the framework maintains constant verification efficiency and a judicially resilient audit trail, providing a paradigm that harmonizes legal pragmatism with cryptographic security for digital inheritance.

С. Чудик, Х. Ю. Тарасенко

The scientific article is devoted to a comprehensive study of the legal nature of non-fungible tokens (NFTs) as objects of civil rights under the legislation of Ukraine. The relevance of the research is обусловed by the rapid development of the NFT market, the absence of specific legislative regulation, and the necessity of adapting Ukrainian civil legislation to the challenges of the digital economy. The paper analyzes the technical nature of NFTs as a prerequisite for their proper legal qualification. It examines the functioning of blockchain technology as a distributed ledger, the minting process, the role of smart contracts in automating the performance of contractual terms, and the distinctions between the ERC-721 and ERC-1155 standards. The article substantiates a critical thesis: an NFT does not constitute the digital object itself but rather represents a digital certificate of authenticity confirming ownership of the token as a digital asset. The position of NFTs within the system of objects of civil rights of Ukraine is determined. The study demonstrates the impossibility of qualifying NFTs as “things” in the classical sense or as securities, due to the absence of issuer obligations and the absolute uniqueness (non-fungibility) of tokens, or their limited fungibility exclusively within a single series governed by a unified smart contract. The most accurate legal qualification is recognized as a combination of the concepts of a “digital thing” (Article 179¹ of the Civil Code of Ukraine) and a “secured virtual asset” within the meaning of the Law of Ukraine “On Virtual Assets” (not yet in force), as NFTs meet the criteria of an intangible asset, constitute objects of civil rights, possess economic value, and are expressed as a set of data in electronic form. It is further established that a smart contract may be regarded as a civil law agreement in relation to an NFT token. Particular emphasis is placed on the fundamental distinction between ownership of an NFT and copyright in the underlying work. It is established that the acquisition of a token does not automatically entail the transfer of economic copyright. The transfer of such rights requires the conclusion of a separate written agreement in compliance with copyright legislation. The article also analyzes international regulatory approaches to NFTs, in particular the provisions of the Markets in Crypto-Assets Regulation (MiCA) of the European Union. It is proposed to consider blockchain-based registration systems as evidence of the fact of creation of a work and the emergence of copyright. Finally, proposals are formulated for improving Ukrainian legislation in the field of NFT regulation.

S. Chudyk, Kh. Yu. Tarasenko

The scientific article is devoted to a comprehensive study of the legal nature of non-fungible tokens (NFTs) as objects of civil rights under the legislation of Ukraine. The relevance of the research is обусловed by the rapid development of the NFT market, the absence of specific legislative regulation, and the necessity of adapting Ukrainian civil legislation to the challenges of the digital economy. The paper analyzes the technical nature of NFTs as a prerequisite for their proper legal qualification. It examines the functioning of blockchain technology as a distributed ledger, the minting process, the role of smart contracts in automating the performance of contractual terms, and the distinctions between the ERC-721 and ERC-1155 standards. The article substantiates a critical thesis: an NFT does not constitute the digital object itself but rather represents a digital certificate of authenticity confirming ownership of the token as a digital asset. The position of NFTs within the system of objects of civil rights of Ukraine is determined. The study demonstrates the impossibility of qualifying NFTs as “things” in the classical sense or as securities, due to the absence of issuer obligations and the absolute uniqueness (non-fungibility) of tokens, or their limited fungibility exclusively within a single series governed by a unified smart contract. The most accurate legal qualification is recognized as a combination of the concepts of a “digital thing” (Article 179¹ of the Civil Code of Ukraine) and a “secured virtual asset” within the meaning of the Law of Ukraine “On Virtual Assets” (not yet in force), as NFTs meet the criteria of an intangible asset, constitute objects of civil rights, possess economic value, and are expressed as a set of data in electronic form. It is further established that a smart contract may be regarded as a civil law agreement in relation to an NFT token. Particular emphasis is placed on the fundamental distinction between ownership of an NFT and copyright in the underlying work. It is established that the acquisition of a token does not automatically entail the transfer of economic copyright. The transfer of such rights requires the conclusion of a separate written agreement in compliance with copyright legislation. The article also analyzes international regulatory approaches to NFTs, in particular the provisions of the Markets in Crypto-Assets Regulation (MiCA) of the European Union. It is proposed to consider blockchain-based registration systems as evidence of the fact of creation of a work and the emergence of copyright. Finally, proposals are formulated for improving Ukrainian legislation in the field of NFT regulation.

Chuan Qin, YanLing Liu

Decentralized Finance (DeFi) has emerged as one of the most transformative applications of blockchain technology, constructing a financial ecosystem that operates without traditional intermediaries through smart contracts and distributed protocols. This paper systematically reviews the research progress of DeFi in terms of technical architecture, core protocols, governance models, and application scenarios, with particular focus on analyzing key domains including lending platforms, decentralized exchanges, stablecoin mechanisms, and asset tokenization. Research indicates that although DeFi demonstrates revolutionary potential in enhancing financial inclusion and transaction efficiency, it still faces significant challenges in smart contract security, regulatory compliance, and systemic risk prevention. This paper further explores future research directions including the integration of DeFi with traditional finance, technological innovation, and real-world asset integration, providing reference for scholars, policymakers, and industry participants to understand this rapidly evolving field.

Yiwen Gao, ChangEr Liu

As a core technology of blockchain ecosystems, smart contracts are fundamentally reshaping the operational logic and commercial landscape of the digital economy. This paper systematically analyzes the current economic ecosystem of smart contracts from four dimensions: business value creation, multi-dimensional industry applications, legal and regulatory challenges, and frontier technological evolution. Research indicates that smart contracts, by reducing transaction costs and enhancing trust mechanisms, have achieved maturity in financial applications (DeFi) and are demonstrating significant enabling effects in real-economy sectors such as supply chains, healthcare, and energy internet. However, their widespread implementation still faces institutional obstacles including ambiguous jurisdictional boundaries, compatibility between code and law, and liability attribution. Looking ahead, Layer-2 scaling solutions have significantly improved cost-effectiveness, while the integration of cross-chain interoperability and AI-driven intelligent decision-making will become key trends driving the expansion of "contractability" boundaries. Smart contracts are not merely technical tools but rather institutional infrastructure driving the transformation of business models from intermediary-dominated to algorithm-autonomous paradigms.

Ömer Tuğsal Doruk

In this study, a novel theoretical framework is provided for the potential effect of smart contracts on reducing transaction costs in financial markets to increase corporate investment. The theoretical model considered in this paper is based on Williamson’s transaction cost approach and considers how an important blockchain technology such as smart contracts can induce corporate investment through its potential transaction cost reduction effect. The findings obtained show that smart contracts minimize transaction costs and increase future growth opportunities for firms to corporate investment. This study sheds new light on smart contract-based finance and its impact on business investment within the Williamson’s transaction cost framework.