Blockchain Papers

Bhupendra sahu

No abstract is available for this record.

Igor Calzada

No abstract is available for this record.

Anna Visvizi, Igor Calzada, Krzysztof Kozłowski, Orlando Troisi

No abstract is available for this record.

Poornachandra Sarang, Leena Nadkar

No abstract is available for this record.

Shuyan Cao

No abstract is available for this record.

Maia Pisaniuc

In 2016, the World Economic Forum recognized blockchain technology as one of the ten most important emerging technologies. Prior to this recognition, The Economist published articles about the "trust machine," introducing this remarkable technology to a wider audience. In order to understand the progress of blockchain technology and its current state, it is essential for countries to research these issues in relation to their economies. It is important to distinguish between theoretical blockchain applications and their commercial applications to assess the potential disruption of existing business models by blockchain technology. This article presents the European initiative in applying this technology and estimates the Moldovan economy's preparedness in this regard. To achieve this, we have set the following objectives: describing the principles and directions of the EU Blockchain/Web3 Strategy; conducting a comparative analysis of the level of innovation in the Moldovan economy with two EU member states; estimating the potential for future use of these technologies, and outlining the necessary skills and abilities. This research is relevant because it identifies the actions that the Moldovan economy must take to achieve a level of innovation and economic progress on par with the EU.

Ashley Chenn

No abstract is available for this record.

Hora, Harneesh Singh, Sahani, Rahul, Suthar, Aryan, Rizwan Khan, Sahil

<i>We present a decentralized NFT (Non-Fungible Token) marketplace built on the Ethereum blockchain. The platform allows users to mint, buy, and sell unique digital assets (e.g., art, collectibles) using Solidity smart contracts and a Web3-enabled frontend. All ownership records are stored on-chain for transparency and immutability, while large media data (images, metadata) are stored off-chain using IPFS. Users connect their wallets (e.g., MetaMask) via a React interface using Ethers.js, enabling peer-to-peer transactions without intermediaries. Key features include real-time transaction updates via blockchain event listeners and gas-optimized contract design. Security is enforced through standard libraries and audit practices to prevent common exploits (e.g., reentrancy, overflow). Performance evaluations show reasonable gas costs per transaction, demonstrating feasibility on Ethereum’s current throughput. Future work includes expanding cross-chain support and enhanced scalability.</i>

Chiara Vandoni, Guido Perboli

No abstract is available for this record.

Irma Imamović, Jasna Imamović

No abstract is available for this record.

Benhaça, Nadia

Cette recherche interroge les mutations du champ artistique à l’ère numérique à travers l’émergence des NFTs comme dispositifs de circulation, de légitimation et de monétisation. S’appuyant sur une analyse de contenu (X, Reddit) et une enquête par questionnaire (artistes et institutions), il examine dans quelle mesure ces technologies participent à une désintermédiation réelle ou tendent à reconduire, sous d’autres formes, les logiques de pouvoir, de hiérarchisation et de sélection caractéristiques au champ de l’art traditionnel. L’étude explore les tensions entre les promesses d’autonomie portées par le Web3 et les configurations concrètes observées dans un écosystème structuré par des plateformes, des algorithmes et des logiques économiques variables.

Freeman Jackson

No abstract is available for this record.

Christos Karapapas, Iakovos Pittaras, George C. Polyzos, Constantinos Patsakis

The InterPlanetary File System~(IPFS) offers a decentralized approach to file storage and sharing, promising resilience and efficiency while also realizing the Web3 paradigm. Simultaneously, the offered anonymity raises significant questions about potential misuse. In this study, we explore methods that malicious actors can exploit IPFS to upload and disseminate harmful content while remaining anonymous. We evaluate the role of pinning services and public gateways, identifying their capabilities and limitations in maintaining content availability. Using scripts, we systematically test the behavior of these services by uploading malicious files. Our analysis reveals that pinning services and public gateways lack mechanisms to assess or restrict the propagation of malicious content.

S. Gheisari, Jaime Osvaldo Salas, Semih Yumuşak, George Konstantinidis

This paper presents MINiDM, a novel negotiation framework designed for decentralised data marketplaces. MINiDM enables AI-driven agents to negotiate complex, multi-issue data-sharing agreements while ensuring compliance with legal and ethical standards such as GDPR. The framework combines game-theoretic strategies, formal policy languages and vocabularies (ODRL and DPV), and a lightweight multi-agent commitment protocol to automate fair transactions without relying on central authorities or blockchain- based contracts. Experimental results demonstrate that MINiDM outperforms existing protocols in terms of agreement rate, fairness, and negotiation efficiency, offering a promising direction for secure and autonomous data trading in Web3 ecosystems.

Richard Yifan Zhou

No abstract is available for this record.

Aaron M. Lane

This chapter provides an analysis of legal mechanisms to addressing fraud and scams involving cryptocurrency, drawing on both practical legal experience and the new comparative economics. Although illicit transactions account for a small portion of total cryptocurrency transaction volumes, individuals incur significant private losses and there are unique enforcement challenges in the Web3 ecosystem. The prevalent legal approach to addressing cryptocurrency-based fraud is though public enforcement mechanisms. This chapter argues that in some circumstances private law and civil litigation mechanisms can offer a more efficient mechanism for addressing cryptocurrency-based fraud with tools to identify perpetrators, tailored legal claims, and secure assets. The chapter concludes by making recommendations to enhance these private law remedies.

Paulo Caetano da Silva, Djalma Oliveira Costa Filho, Daniel Jose Diaz, José Alan da Silva Teixeira

Blockchain has received a lot of attention for multiple use cases and applications since the first works emerged about 15 years ago, with its use targeting cryptocurrencies. During this period, a wide variety of platforms (e.g. Ethereum, Hyperledger, and others web3 Blockchain platforms), tools, programming languages and other resources such as smart contracts were proposed. With the aim of better understanding the use of smart contracts in Blockchain-based systems, this article presents a systematic review of the literature on Blockchain application architectures that make use of smart contracts, applied in different areas. It is expected to bring together approaches for the design and implementation of smart contracts on the Blockchain.

Furrer Andreas, Wulf A. Kaal

No abstract is available for this record.

Olayimika Oyebanji

No abstract is available for this record.

Robin G. Qiu

No abstract is available for this record.

Helena Rong, David Dam

No abstract is available for this record.

Peter Hoffmann

No abstract is available for this record.

Robin G. Qiu

No abstract is available for this record.

Igor Calzada

This chapter positions political geography as a critical lens through which to investigate the rise of cyberlibertarian post-Westphalianism—a phenomenon shaped by Web3 infrastructures, GenAI systems, and decentralized techno-politics. Building on sustained fieldwork in Silicon Valley since August 2022 and prior research, the chapter interrogates how libertarian ideologies embedded in Web3 are reconfiguring notions of sovereignty, governance, and socioeconomic coordination. It compares three paradigmatic formations: Network States (Srinivasan), rooted in crypto-libertarianism; Network Sovereignties (De Filippi), grounded in commons-based governance; and Algorithmic Nations (Calzada), emphasizing cultural self-determination and data sovereignty. Engaging with critical voices such as Jarrad Hope and David Golumbia, the chapter reveals the ideological tensions at the core of cyberlibertarianism, particularly its propensity to reinforce elitism and obscure structural inequalities. It argues that while decentralization promises new affordances for digital citizenship, it risks consolidating power in technocratic enclaves unless governed through pluralistic and inclusive frameworks. Drawing on theories of innovation systems and AI economics, the chapter calls for hybrid governance models that prioritize solidarity, transparency, and institutional reflexivity. Ultimately, it proposes that political geography must play a central role in reimagining post-Westphalian digital orders that are democratic, accountable, and socially just.