Blockchain Papers

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6 papersLast indexed Aug 31, 2026
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Dec 1, 2025·Revista da FUNDARTE
0 cites
A OBRA DE ARTE NO METAVERSO COMO TOKEN NÃO FUNGÍVEL

Neide Judith Faria de Oliveira, Francisco Carneiro da Silva Filho

A pesquisa discute o uso da tecnologia NFT (Non-Fungible Tokens) no mercado de arte, considerando a exclusividade dessas obras. As NFTs permitem exibição em galerias virtuais no Metaverso, associadas ao blockchain, tanto como ativos físicos quanto intangíveis (propriedade intelectual). A tecnologia reforça noções de herança e propriedade, mas enfrenta desafios como altos custos, falta de regulamentação, consumo de energia e direitos autorais. A pesquisa explora as potencialidades dessa tecnologia e a necessidade de procedimentos claros para garantir transações justas e transparentes no mercado artístico.

Open access
Blockchain Technology Applications and Security
Art History and Market Analysis
Healthcare Regulation
Original source
Apr 29, 2025·Alexandria Engineering Journal
13 cites
A decentralized and privacy-preserving framework for electronic health records using blockchain

Saad Alahmari, Amal Alshardan, Fahd N. Al‐Wesabi, Shaymaa E. Sorour · 8 authors

As healthcare services have become increasingly digitized, Electronic Health Records (EHRs) have become widely adopted, providing seamless data exchange among providers. Conventional EHRs, however, are extremely vulnerable to cyber threats because patients' sensitive data is centralized and transmitted electronically. The paper proposes a decentralized, privacy-preserving framework for managing EHRs on blockchains in order to address these security and privacy concerns. Using cryptographic techniques, such as homomorphic encryption and zero-knowledge proofs, the proposed system enhances security and ensures data integrity. Additionally, the model facilitates scalable, efficient, and secure access to patient records through the integration of cloud-based storage and blockchain. Using smart contracts, we also ensure compliance with healthcare regulations by regulating access control and authentication. As a result of performance evaluations, the proposed approach is demonstrated to be feasible, and the advantages it offers in terms of security, privacy, and efficiency are highlighted.

Open access
Blockchain Technology Applications and Security
IoT and Edge/Fog Computing
Privacy-Preserving Technologies in Data
Original source
Apr 1, 2025·Journal of Medical Regulation
0 cites
Regulatory Considerations of Non-Fungible Tokens in Healthcare

Angela Hemesath, William M. Tian, Bryce W. Polascik, Suzanna Joseph · 10 authors

Purpose:. To combine the perspectives of health and commercialization experts on the ethical and regulatory needs for non-fungible token (NFT) implementation in healthcare.Design:. PerspectiveMethods:. For a multidisciplinary perspective by an interdisciplinary group, current event articles and research articles were interpreted and assessed.Results:. Health data has become fragmented and disorganized, resulting in poor accessibility, increased administrative costs, and integrity vulnerability. Healthcare is uniquely suited to adopt blockchain and NFT technology as potential solutions. The incorporation of blockchain technology may offer multiple improvements in data-sharing through consensus, tokenization, and decentralization. However, the current regulatory infrastructure to support blockchain is poorly defined.Conclusions:. Healthcare NFTs would revolutionize patient control over their health data and promote more ethical transparency of data ownership while also reducing administrative security costs. However, blockchain poses unprecedented requirements of healthcare regulation within the unique realms of patient privacy and data ownership. Large-scale implementation of blockchain cannot be achieved without regulatory collaboration.

Open access
Pharmaceutical Economics and Policy
Health Systems, Economic Evaluations, Quality of Life
Quality and Safety in Healthcare
Original source
Oct 30, 2024·International Journal of Computational and Experimental Science and Engineering
14 cites
A Scalable, Secure, and Efficient Framework for Sharing Electronic Health Records Using Permissioned Blockchain Technology

P. Vinayasree, A. Mallikarjuna Reddy

This paper presents a scalable, secure blockchain-based healthcare system architecture that efficiently manages large patient datasets. DHTs and Skip Lists enable efficient data access, while DPoS and PBFT facilitate parallel transaction processing. Adaptive filters, Radix Trees extended by Merkle Trees, and an immutable blockchain ledger secured by Tendermint consensus ensure data integrity and protection against evolving threats. Threshold Cryptography secures consensus participant selection, and Bulletproofs verify transactions, complying with healthcare regulations. ChaCha20, a symmetric stream cipher, encrypts sensitive data, enhancing performance across devices. ABAC manages access rights, ensuring fine-grained control over data accessibility. This architecture offers a comprehensive, efficient, and secure solution for healthcare data management in blockchain environments.

Open access
Blockchain Technology Applications and Security
Original source
Jan 1, 2008·Arca - Repositório Institucional da Fiocruz
0 cites
Primary care and financing: challenges for the decentralization of health

Adenilda Maria Siqueira de Andrade, Alberice Maria Mendes, Cristiane S. Miguel Cabral de Vasconcelos, Maria Eliza da Mota Reinaux Paes Barreto

O Brasil vem redefinindo o perfil do seu sistema de saúde, reformulando papéis e funções de saúde pública na tentativa de construir responsabilidades locais. Este panorama originou um novo arranjo para o sistema municipal de saúde no qual busca-se a integralidade das ações de saúde a partir da dinâmica do financiamento. Trata-se de um estudo descritivo de base bibliográfica e documental. O estudo apresenta uma revisão sobre o processo da descentralização administrativa/financeira na saúde, sua repercussão no fortalecimento da atenção básica tendo a estratégia saúde da família como elemento propulsor da forte expansão observada nesse componente da atenção à saúde, bem como as conseqüências da descentralização na gestão dos trabalhadores de saúde. Discute o papel das Normas Operacionais do SUS, em especial da Norma Operacional Básica - NOB/96 com a implantação do Piso da Atenção Básica (PAB) como referencial para a ampliação dos investimentos na atenção básica, o papel relevante da Lei de Responsabilidade Fiscal que além de impor limites aos gastos, também estabelece diretrizes para a elaboração, execução e avaliação do orçamento público, e o Pacto pela Saúde firmado entre as três esferas de governo com a atenção voltada para os princípios e diretrizes articulados e integrados nos Pactos pela Vida, em Defesa do SUS e de Gestão. Destaca-se o forte papel indutor do nível federal de gestão do SUS, que através de mecanismos de financiamento reordena as ações e serviços de saúde no nível local

Open access
Health, Nursing, Elderly Care
Public Health in Brazil
Healthcare Regulation
Original source