The huge debt profile of Nigerian government dictates the need to look for alternative means of financing. This paper explored how the Nigerian government can increase its revenue through block chain technology and crypto currency. The study adopted a qualitative research approach by reviewing related literatures. The study concluded that even though crypto currency was not recognized as legal tender in Nigeria, the government can take advantage of the emerging and growing market of crypto currency by taxing it, this study recognized the fact that Nigeria government just enacted an act imposing 10% capital gain tax on digital assets including crypto currency, the government can still do better. It therefore recommended that Nigeria government should adopt the USA model of taxing crypto currency whereby not only capital gain tax would be charged, but also income tax and value added tax; thereby increasing the total revenue generated from this avenue.
Priyanka. A. Kadam, Swaroop V. Suryakar, Nishant R. Wagh, Vaibhav B. Kale · 5 authors
The rapid digitization of information sharing and document exchange in various sectors, including healthcare, finance, and governmental services, has underscored the critical need for robust security mechanisms. Traditional methods often fall short in ensuring the confidentiality, integrity, and availability of shared documents, leading to vulnerabilities in data privacy and security. This research paper introduces a groundbreaking approach to secure document exchange by leveraging the inherent properties of blockchain technology. Through a comprehensive analysis, we explore how blockchain's decentralized nature, cryptographic security, and immutability can be harnessed to create a secure and efficient platform for information sharing. We begin by delineating the current challenges in document exchange systems, such as susceptibility to cyber-attacks, fraud, and unauthorized access. Subsequently, we propose a blockchain-based framework that addresses these issues by enabling transparent and tamper-proof transactions, ensuring data integrity, and facilitating secure access control. Our methodology includes the development of a prototype system that employs smart contracts for automating and securing document exchange processes. Through rigorous testing and evaluation, we demonstrate the system's ability to withstand various security threats, including data breaches and interception attacks.
Kevin Werbach, Primavera De Filippi, Joshua Tan, Gina Pieters
Blockchain Governance in the Wild 2 Our work differs from the existing literature in three significant ways. Firstly, there has been very little comparative work among different blockchain networks or communities-what exists generally focuses only on Bitcoin and Ethereum at most. Secondly, this is not a theoretical study of potential successes or failures: We instead survey practical implementations, and governance development plans of specific projects. Finally, we do not examine only the governance decisions encoded on-chain. Our work expands to consider social norms, informal practices, and institutional governing entities associated with the project outside of the code. We believe this paper is the first to formally document and highlight the importance of informal governance structures within blockchain projects.
The project titled “Rise Together: A Crowdfunding platform” introduces a groundbreaking Crowdfunding Platform on the Ethereum blockchain, revolutionizing traditional fundraising models. Leveraging smart contracts for seamless automation and execution of campaigns, the platform ensures transparency, security, and efficiency. Ethereum's decentralization eliminates intermediaries, reducing costs, and enhancing accessibility. Key features include a user-friendly interface, contribution tracking, and real time campaign monitoring. Utilizing Ether as the native cryptocurrency streamlines contributions, offering a secure and standardized means of support. Positioned at the intersection of blockchain and fundraising, this project contributes to the evolution of decentralized finance, showcasing Ethereum's potential for secure, inclusive, and innovative crowdfunding. Key Words: Rise Together, Crowdfunding, Blockchain, Smart Contract, Transparency, Decentralization, Wallet Integration.
This article aims to find out the validity of the Civil Code smart contact. It is hoped that the results of this research can be used by parties, especially people who have started carrying out transaction and contract activities using blockchain technology in the form of smart contracts. This research method uses normative law, the use of legal materials includes primary and secondary legal materials, through data collection techniques in the form of literature studies. A conceptual approach and a statutory approach were used in this research. The data analysis technique used is a deductive data analysis technique using the syllogism method. The validity of an agreement is assessed based on an understanding of article 1313 and the main elements of the validity of an agreement based on article 1320 along with the principle of freedom of contract in article 1338 of the Civil Code. It is necessary to understand that smart contracts are required to fulfill the terms of the agreement in their implementation
The development of digital technologies that increase the security of payments and improve settle-ments is one of the main tasks facing regulators in the financial sector. The main reason for the in-creased attention to distributed ledger technology in the financial sector is the expectation that it will eliminate a number of problems and limitations inherent in the currently used methods of storing, ac-counting and transmitting financial information. The authors consider the advantages of the distribut-ed ledger technology in the implementation of financial transactions
Payment systems have seen a rapid change in the digital age, transforming how people and organizations perform financial transactions. An in-depth examination of the major advancements in payment systems in the digital age is provided in this research paper, with a particular emphasis on mobile payments, contactless technologies, and the prospective effects of cryptocurrencies on conventional payment methods. The study examines existing studies, new technological developments, and the implications for consumers and financial institutions. This article seeks to shed light on the potential future of digital payments by exploring the advantages and difficulties of these new payment systems
Juraj Fabuš, Iveta Kremeňová, Natália Stalmašeková, Terézia Kvasnicová-Galovičová
This article explores the significance of Bitcoin halving events within the cryptocurrency ecosystem and their impact on market dynamics. While the existing literature addresses the periods before and after Bitcoin halving, as well as financial bubbles, there is an absence of forecasting regarding Bitcoin price in the time after halving. To address this gap and provide predictions of Bitcoin price development, we conducted a rigorous analysis of past halving events in 2012, 2016, and 2020, focusing on Bitcoin price behaviour before and after each occurrence. What interests us is not only the change in the price level of Bitcoins (top and bottom), but also when this turn occurs. Through synthesizing data and trends from previous events, this article aims to uncover patterns and insights that illuminate the impact of Bitcoin halving on market dynamics and sustainability, movement of the price level, the peaks reached, and price troughs. Our approach involved employing methods such as RSI, MACD, and regression analysis. We looked for the relationship between the price of Bitcoin (top and bottom) and the number of days after the halving. We have uncovered a mathematical model, according to which the next peak will be reached 19 months (in November 2025) and the trough 31 months after Bitcoin halving 2024 (in November 2026). Looking towards the future, this study estimates predictions and expectations for the upcoming Bitcoin halving. These discoveries significantly enhance our understanding of Bitcoin’s trajectory and its implications for the finance cryptocurrency market. By offering novel insights into cryptocurrency market dynamics, this study contributes to advancing knowledge in the field and provides valuable information for cryptocurrency markets, investors, and stakeholders.
In recent years, blockchain technology has attracted substantial interest for its capability to transform supply chain management and finance. This paper employs evolutionary game theory to investigate the application of blockchain in mitigating financial risks within supply chains, taking into account the technology’s maturity and the risk preferences of financial institutions. By modeling interactions among financial institutions, small and medium enterprises (SMEs), and core enterprises within the accounts receivable financing framework, this study evaluates blockchain’s impact on their decision-making and its efficacy in risk reduction. Our findings suggest the transformative potential of blockchain in mitigating financial risks, solving information asymmetry, and enhancing collaboration between financial entities and SMEs. Additionally, we integrate smart contracts into supply chain finance, proposing pragmatic procedures for their deployment in real-world contexts. Via a detailed examination of blockchain’s maturity and financial institutions’ risk preferences, this research demonstrates the primary determinants of strategic decisions in supply chain finance and underscores how blockchain technology fosters system stability using risk mitigation. Our innovative contribution lies in the design of smart contracts for the ARF process, rooted in blockchain’s core attributes of security, transparency, and immutability, thereby ensuring efficient operation and cost reduction in supply chain finance.
Blockchain can be used to improve microfinance management in several ways. This can help reduce the costs of microfinance by eliminating the need for intermediaries such as banks and credit bureaus and increase transparency in the microfinance sector by making all transactions visible to everyone. stakeholders. This can help reduce fraud and build trust. Blockchain technology can also be used to improve access to finance for people living in poverty by making it easier for them to obtain loans and other financial services and to increase financial inclusion by providing people living in poverty a safe and reliable way to obtain funds, store and manage their money. Indeed, the blockchain is a secure, transparent and immutable distributed ledger. This means that data stored on a blockchain cannot be modified or deleted and is accessible to all network participants. Blockchain technology has the potential to revolutionize a wide range of industries, including finance, supply chain management, healthcare and voting. This makes blockchain a valuable tool for microfinance institutions, as it can help improve the efficiency and accuracy of their data management processes. For example, blockchain can be used to track loan repayments, manage customer information, and prevent fraud. This study aims to demonstrate that blockchain has the potential to revolutionize the microfinance sector by improving the transparency and accountability of microfinance institutions, given that all transactions on a blockchain are public and cannot be modified. This means borrowers and lenders can be confident that their transactions are recorded accurately and that there is no risk of fraud. Overall, blockchain technology has the potential to significantly improve information management in microfinance institutions. This can lead to increased efficiency, accuracy, transparency and accountability in microcredit management. Keywords: Microcredit, blockchain, security, transparency, decentralization, credit.
The data economy has arisen in most developed countries. Instruments and tools to extract knowledge and value from large collections of data are now available and enable new industries, business models, and jobs. However, the current data market is asymmetric and prevents companies from competing fairly. On the one hand, only very specialized digital organizations can manage complex data technologies such as Artificial Intelligence and obtain great benefits from third-party data at a very reduced cost. On the other hand, datasets are produced by regular companies as valueless sub-products that assume great costs. These companies have no mechanisms to negotiate a fair distribution of the benefits derived from their industrial data, which are often transferred for free. Therefore, new digital data-driven marketplaces must be enabled to facilitate fair data trading among all industrial agents. In this paper, we propose a blockchain-enabled solution to monetize industrial data. Industries can upload their data to an Inter-Planetary File System (IPFS) using a web interface, where the data are randomized through a privacy-preserving algorithm. In parallel, a blockchain network creates a Non-Fungible Token (NFT) to represent the dataset. So, only the NFT owner can obtain the required seed to derandomize and extract all data from the IPFS. Data trading is then represented by NFT trading and is based on fungible tokens, so it is easier to adapt prices to the real economy. Auctions and purchases are also managed through a common web interface. Experimental validation based on a pilot deployment is conducted. The results show a significant improvement in the data transactions and quality of experience of industrial agents.
Blockchain technology is increasingly being recognized for its pivotal role in enhancing security, immutability, and transparency across government sectors, notably in land registration (LR) processes. This research emphasizes the need for contextually adapted blockchain technology solutions, particularly in resource-constrained and culturally diverse settings. Utilizing the elaborated action design research method, this study presents a Hyperledger-based blockchain technology system tailored for Sudan’s LR, addressing technical challenges, evaluation frameworks, privacy measures, and deployment strategies. This system not only facilitates secure and transparent land transactions from planning to certificate issuance, but also integrates the management of land sales, significantly reducing the need for intermediaries. By providing a detailed exploration of the system’s goals, technical hurdles, and practical deployment insights, this research contributes valuable knowledge to the implementation of blockchain technology in LR, with findings that are applicable to similar contexts globally. This study underscores the importance of customizing blockchain solutions to meet the unique requirements of different environments, thereby advancing digital government in resource-constrained settings.
This study investigates cryptocurrency knowledge, risk perception, and investment strategies among İstanbul Provincial Health Directorate employees. Analyzing data from 399 participants using the Cryptocurrency investment Trust Scale, which is developed by Ozyesil and Tembelo (2023), results indicate limited cryptocurrency awareness, moderate risk perception, and conservative investment tendencies. While most participants have heard of cryptocurrency, their understanding remains shalloyv, perceiving it as high-risk and favoring traditional financial instruments. The study emphasizes the necessity of educational initiatives and regulatory frameworks to facilitate safe and compliant cryptocurrency usage within the healthcare sector.
Cryptocurrency, a decentralized frame of computerized cash, has picked up ubiquity around the world. In any case, its broad selection has brought consideration to noteworthy security concerns. This paper presents a exhaustive examination of cryptocurrency security, distinguishing key challenges and proposing arrangements to support the security of advanced assets. The paper starts by talking about the foundational innovation of cryptocurrencies, specifically blockchain, which offers straightforwardness and unchanging nature but is defenceless to assaults such as 51% assaults and double-spending. It at that point digs into security dangers related with cryptocurrency capacity and trade stages, counting wallet vulnerabilities and hacking incidents. Current security best hones, such as multi-signature wallets and cold storage solutions, are analysed, alongside rising innovations like zero-knowledge proofs and homomorphic encryption. Furthermore, the part of administrative systems in advancing cryptocurrency security is investigated, highlighting the require for a adjusted approach that energizes advancement whereas securing investors. In conclusion, guaranteeing the security of cryptocurrencies is basic for cultivating believe and widespread adoption. By tending to vulnerabilities and executing vigorous security measures, partners can relieve dangers and open the complete potential of advanced monetary forms. This paper contributes profitable experiences to the continuous discourse on cryptocurrency security and recommends roads for future inquire about in this energetic field.
Bugs in smart contracts may have devastating effects as they tend to cause financial loss. According to a recent study, accounting bugs are the most common kind of bugs in smart contracts that are beyond automated tools during pre-deployment auditing. The reason lies in that these bugs are usually in the core business logic and hence contract-specific. They are analogous to functional bugs in traditional software, which are largely beyond automated bug finding tools whose effectiveness hinges on uniform and machine checkable characteristics of bugs. It was also reported that accounting bugs are the second-most difficult to find through manual auditing, due to the need of understanding underlying business models. We observe that a large part of business logic in smart contracts can be modeled by a few primitive operations like those in a bank, such as deposit, withdraw, loan, and pay-off, or by their combinations. The properties of these operations can be clearly defined and checked by an abstract type system that models high-order information such as token units, scaling factors, and financial types. We hence develop a novel type propagation and checking system with the aim of identifying accounting bugs. Our evaluation on a large set of 57 existing accounting bugs in 29 real-world projects shows that 58% of the accounting bugs are type errors. Our system catches 87.9% of these type errors. In addition, applying our technique to auditing a large project in a very recent auditing contest has yielded the identification of 6 zero-day accounting bugs with 4 leading to direct fund loss.
The advent of cryptocurrencies and blockchain technology has sparked a revolutionary Shift in the financial sector. This study sets out on a wide-ranging investigation to understand the nuanced dynamics, repercussions, and potential future paths of this shifting environment in the UK and USA. The primary goals of the research are to examine how cryptocurrencies affect financial markets and conventional banking systems; to examine how blockchain technology might be used in the financial sector; to assess policy and regulatory considerations; and to predict and plan for the future. This research digs into how cryptocurrencies have revolutionized the banking and finance sectors. Analysis of adoption rates, market volatility, and integration methods sheds light on the changing position of cryptocurrencies in investment portfolios, reconfiguration of asset classes, and coping mechanisms of conventional financial institutions. When looking at the financial sector as a whole, the transformational potential of blockchain technology becomes clear. The advent of DeFi, smart contracts, and asset tokenization offers new prospects to improve financial transactions, increase transparency, and broaden participation in the investment market. The research analyzes cryptocurrencies and blockchain technology from a policy and regulatory perspective. The delicate balancing act between stimulating innovation and guaranteeing consumer protection, market integrity, and financial stability is highlighted by a comparison of the regulatory methods adopted in the United Kingdom and United States, as well as proposals from international organizations. The research identifies potential future paths for these technologies and their implications. Opportunities and challenges that will influence the future of finance emerge, with a focus on central bank digital currencies (CBDCs), sustainable blockchain solutions, and interdisciplinary collaborations. As this deep dive comes to a close, the transformational power of cryptocurrencies and blockchain technology is highlighted. It sheds light on the forces that are altering the structures of the world’s financial markets, conventional banking structures, and regulatory frameworks. The findings and critical assessment stress the need for well-considered choices, ethical innovation, and interdisciplinary cooperation in order to succeed in an ever-changing environment. To further democratize access, improve transparency, and reshape the economic fabric of our planet, the future of finance resides at the confluence of tradition and innovation, where cryptocurrencies and blockchain technology exist. Cryptocurrency adoption has catalyzed changes in consumer behavior and investment patterns. While some view digital currencies as speculative assets, others embrace them as alternative forms of money and store of value. This diversity of perspectives underscores the need for a nuanced understanding of cryptocurrency adoption and its implications for financial systems. The significance of this study lies in its contribution to our understanding of the evolving relationship between cryptocurrency adoption and financial innovation. By elucidating the drivers, challenges, and implications of this phenomenon, policymakers, industry stakeholders, and researchers can make informed decisions to harness the transformative potential of digital currencies while mitigating associated risks. Cryptocurrency adoption and the financial innovations it has spurred are transforming the way we think about money and financial services. While challenges remain, the potential benefits of a more decentralized, efficient, and inclusive financial system are significant. As the technology matures, regulatory frameworks adapt, and user confidence grows, cryptocurrency adoption is likely tocontinue its upward trajectory. Cryptocurrency adoption and its associated financial innovations have the potential to usher in a paradigm shift in the way we manage and exchange value.
Abstract: This chapter explores the profound impact of Artificial Intelligence (AI) on the future of finance, focusing on its transformative effects across cryptocurrency, financial technology (FinTech), and broader economic outlooks. It delves into the integration of AI with blockchain to revolutionize cryptocurrency markets, enhance security, and innovative trading strategies. In the realm of FinTech, the chapter examines how AI-driven services such as robo-advisors and personalized banking are reshaping customer experiences and expanding financial inclusion. Additionally, it addresses AI's role in regulatory compliance, streamlining processes through RegTech, and ensuring adherence to financial regulations. The discussion extends to economic forecasting, where AI's predictive capabilities offer nuanced insights into market trends, inflation rates, and labor dynamics, contributing to informed policy-making and strategic investment planning. Challenges such as data privacy, security, and ethical considerations in AI deployment are critically analyzed to highlight the need for robust frameworks that ensure responsible use. The chapter concludes by emphasizing the collaborative effort required among technologists, financial experts, and policymakers to harness AI's potential responsibly, advocating for adaptive strategies that balance innovation with ethical considerations, thereby shaping a future where finance is more efficient, secure, and inclusive. Keywords: Artificial Intelligence (AI),Future of Finance,Cryptocurrency Innovations,Financial Technology (FinTech),Economic Forecasting,Blockchain Technology,Robo-Advisors,Regulatory Technology (RegTech),Data Privacy in Finance,Algorithmic Trading,Financial Inclusion,Economic Trends Prediction,Ethical AI Use,Financial Security Measures and Investment Strategy.
Through two qualitative case studies we explore the role of a fintech and a big bank in shaping trust expectations of blockchain use in mainstream financial markets. Drawing on Zucker's theory of trust we explore adaptations to the original blockchain made by these actors, and show how such changes may impact trust expectations from blockchain use. Our analysis identifies a blockchain innovation trajectory involving the co-evolution between technological changes and trust expectations as it moves from supporting cryptocurrency exchanges to mainstream business settings. Furthermore, we show that fintech startups and established big banks align their strategies with the widespread generalization and acceptance of blockchain as a sector-wide information infrastructure and position themselves in co-dependent relationships within the emerging blockchain marketplace. Industry practitioners may gain insights on how to best navigate this innovation space.
Smart contracts are widely applied in financial delegation contracts to address contract fraud. The smart contract delegation contract signing mechanism (DCSM-SC) effectively tackles fraud risks arising from information and interest asymmetry. However, in dealing with financial contracts, a formalized analysis method is necessary.
Equity crowdfunding via the Internet is a new channel of raising fund for startups. It features low walls to entry, low cost, and high speed, and therefore encourages invention. In recent times, equity crowdfunding in India has endured some developments. still, some problems remain unsolved in practice. Blockchain is a decentralized and distributed tally technology to ensure data security, transparency, and integrity. Because it cannot be tampered, the technology is supposed to have great eventuality in the finance assiduity. This study examines current problems in the practice of equity crowdfunding in India. Grounded on the analysis of the characteristics of blockchain technology, this study further explores its practical operations in crowdfunding. Blockchain technology is a secure, effective, low- cost result for the enrolment of stocks and shares of a establishment financed by crowdfunding. First, a vendor initiates a request for ensuring a product, then the interested lenders participate in a project Key Words: Blockchain, crowdfunding, Fundraising, Project Registration and Transaction, Voting of Shareholders, Ethereum, Smart Contracts
Smart contracts promise automation, transparency, and reduced transaction costs, yet their deployment on distributed ledgers exposes deep legal fault lines that traditional doctrinal tools only partially address. This paper synthesizes contract, property, data-protection, consumer, and financial-regulatory dimensions to map the principal legal challenges that arise when code becomes performance. We distinguish “smart legal contracts” (where code implements an enforceable legal agreement) from purely automated, code-only arrangements, and we explain why, despite technical self-execution, contract law, remedies, and regulatory oversight remain indispensable. We analyze enforceability and interpretation (e.g., the “reasonable coder” question), formation and consent, jurisdiction and choice-of-law in borderless networks, immutability versus legal rectification, oracle risk and attribution of liability, consumer-protection/unfair terms, AML/KYC overlays, evidentiary issues, and property/transfer rules for on-chain assets. Recent instruments—such as the EU Data Act’s essential requirements for smart contracts used in data-sharing, the UK Law Commission’s guidance on smart legal contracts, the UKJT’s Digital Dispute Resolution Rules, UNCITRAL model laws, and the U.S. UCC Article 12 on controllable electronic records—are reshaping the legal terrain but do not eliminate foundational questions. To organize this complexity, we propose a simple Legal Risk Salience Index (LRSI) that scores likelihood and impact for ten recurring risk families; the index is a transparent, replicable rubric for counsel and product teams to prioritize mitigations. We conclude with actionable recommendations—layering natural-language wrappers, robust governance and kill-switch design consistent with statutory requirements, explicit choice-of-law and dispute-resolution clauses (including on-chain arbitration), and defensible oracle strategies—along with scope and limitations of the analysis. The result is a practitioner-oriented map of where code and law still talk past each other—and how to bring them into better alignment.
The development of financial technology has given rise to a new class of asset known as cryptocurrency, which has presented a significant potential for study. Forecasting cryptocurrency prices is challenging because of their dynamic and volatile nature. There are hundreds of different cryptocurrencies in circulation today. With prospects in peer-to-peer payments, remittance, e-commerce and retail, and media & entertainment, the cryptocurrency business appears to have a bright future. From 2019 to2024, the worldwide cryptocurrency industry is anticipated to expand at a 32% CAGR. The distributed ledger technology's immutability and transparency, the rise in remittances from poor nations, shifting monetary laws, and a sharp rise in venture capital investments are the main factors propelling this market's growth. We created a short-term prediction (between five and thirty days) for the cryptocurrencies using the ARIMA model. When it came to predicting cryptocurrency time series, we discovered that the suggested method outperformed the ARIMA-ARFIMA models in both periods of gradual rising (falling) and transition dynamics (change of trend). Index Terms: digital currency,cryptocurrency, and ARIMA model.
BACKGROUND The benefits of smart contracts (SCs) for sustainable health care are a relatively recent topic that has gathered attention given its relationship with trust and the advantages of decentralization, immutability, and traceability introduced in health care. Nevertheless, more studies need to explore the role of SCs in this sector based on the frameworks propounded in the literature that reflect business logic that has been customized, automatized, and prioritized, as well as system trust. This study addressed this lacuna. OBJECTIVE This study aimed to provide a comprehensive understanding of SCs in health care based on reviewing the frameworks propounded in the literature. METHODS A structured literature review was performed based on the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) principles. One database—Web of Science (WoS)—was selected to avoid bias generated by database differences and data wrangling. A quantitative assessment of the studies based on machine learning and data reduction methodologies was complemented with a qualitative, in-depth, detailed review of the frameworks propounded in the literature. RESULTS A total of 70 studies, which constituted 18.7% (70/374) of the studies on this subject, met the selection criteria and were analyzed. A multiple correspondence analysis—with 74.44% of the inertia—produced 3 factors describing the advances in the topic. Two of them referred to the leading roles of SCs: (1) health care process enhancement and (2) assurance of patients’ privacy protection. The first role included 6 themes, and the second one included 3 themes. The third factor encompassed the technical features that improve system efficiency. The in-depth review of these 3 factors and the identification of stakeholders allowed us to characterize the system trust in health care SCs. We assessed the risk of coverage bias, and good percentages of overlap were obtained—66% (49/74) of PubMed articles were also in WoS, and 88.3% (181/205) of WoS articles also appeared in Scopus. CONCLUSIONS This comprehensive review allows us to understand the relevance of SCs and the potentiality of their use in patient-centric health care that considers more than technical aspects. It also provides insights for further research based on specific stakeholders, locations, and behaviors.
To govern smart contracts running on Ethereum, multiple Ethereum Request for Comment (ERC) standards have been developed, each containing a set of rules to guide the behaviors of smart contracts. Violating the ERC rules could cause serious security issues and financial loss, signifying the importance of verifying smart contracts follow ERCs. Today's practices of such verification are to either manually audit each single contract or use expert-developed, limited-scope program-analysis tools, both of which are far from being effective in identifying ERC rule violations. This paper presents a tool named AuditGPT that leverages large language models (LLMs) to automatically and comprehensively verify ERC rules against smart contracts. To build AuditGPT, we first conduct an empirical study on 222 ERC rules specified in four popular ERCs to understand their content, their security impacts, their specification in natural language, and their implementation in Solidity. Guided by the study, we construct AuditGPT by separating the large, complex auditing process into small, manageable tasks and design prompts specialized for each ERC rule type to enhance LLMs' auditing performance. In the evaluation, AuditGPT successfully pinpoints 418 ERC rule violations and only reports 18 false positives, showcasing its effectiveness and accuracy. Moreover, AuditGPT beats an auditing service provided by security experts in effectiveness, accuracy, and cost, demonstrating its advancement over state-of-the-art smart-contract auditing practices.