Banca de DEFESA: VITOR GONÇALEZ LINDBERGH

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : VITOR GONÇALEZ LINDBERGH
DATE: 28/08/2025
TIME: 14:00
LOCAL: Video conferência - Google Meet: meet.google.com/nmu-zwud-grv
TITLE:

Engineering a Permissioned Blockchain Architecture for Cross-Institutional EHR Sharing

KEY WORDS:

Blockchain; Healthcare; Electronic Health Records (EHR); Data Sharing; Data Security; Hyperledger Fabric.

PAGES: 85
BIG AREA: Ciências Exatas e da Terra
AREA: Ciência da Computação
SUMMARY:

The healthcare industry faces critical challenges in managing Electronic Health

Records (EHRs), particularly regarding data security, interoperability, and patient privacy.

Traditional centralized systems often lead to fragmented data storage, vulnerabilities, and

inefficiencies that compromise care and integrity. This dissertation explores how blockchain

technology—leveraging decentralization, immutability, and transparency—can enhance se-

cure and interoperable EHR management. A systematic mapping study of 35 peer-reviewed

papers from Scopus highlighted blockchain’s potential to improve interoperability, security,

and patient control, while also identifying ongoing concerns with scalability, privacy, and

regulatory compliance. In response, this work proposes a blockchain-based architecture

that defines clear functional and non-functional requirements focused on security, interop-

erability, and consent management. The solution integrates smart contracts, consensus

mechanisms, and a permissioned blockchain network to enable robust, auditable data

exchange across healthcare institutions. A proof-of-concept (PoC) built using Hyperledger

Fabric demonstrates secure EHR transactions, fine-grained access control, and patient-

driven consent management. The PoC was validated against defined Quality of Service

(QoS) metrics, confirming technical feasibility and alignment with system goals. This

research contributes a viable architectural approach for secure and efficient EHR sharing

and lays the foundation for future work on scalability, infrastructure integration, and

regulatory alignment.

COMMITTEE MEMBERS:
Presidente - 2180207 - ITAMIR DE MORAIS BARROCA FILHO
Interno - 1874895 - RAMON DOS REIS FONTES
Externo à Instituição - DIEGO DA SILVA PEREIRA - IFRN