BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20260524T082745EDT-9819AvuDIB@132.216.98.100 DTSTAMP:20260524T122745Z DESCRIPTION:Abstract\n\nThe digitization of healthcare\, driven by technolo gical advancements and the digitization of medical records\, presents both opportunities and challenges in secure and efficient medical data managem ent. Key concerns revolve around data security\, privacy\, and accessibili ty\, particularly in the centralized nature of existing systems. Blockchai n technology has emerged as a promising solution\, offering a decentralize d and transparent framework for data exchange and management. However\, th e interoperability of multiple blockchain-based healthcare networks presen ts a new challenge\, limiting their effective utilization in the healthcar e sector. Inadequate data management across different blockchain systems c an lead to duplications\, inconsistencies\, and inefficiencies\, putting p atient record privacy and security at risk. To tackle these challenges\, t his thesis proposes a novel approach by introducing blockchain tokens as a universal encrypted access system\, facilitating the seamless transfer of patients' medical data across various blockchain-based healthcare network s. Assigning a unique token to each patient addresses the issues of data f ragmentation and lack of interoperability that impede blockchain adoption in healthcare. To achieve universal access using tokens\, our solution lev erages distributed storage systems (DSS)\, employs steganography and integ rates cryptographic techniques. DSS eliminates centralized storage of sens itive medical data\, preventing a single point of failure. To protect agai nst the public nature of DSS and the NFT metadata\, steganography protects data unique identifiers and sensitive metadata\, granting access only to authorized parties. Information is further secured with a strong password when embedded within an image\, serving as an NFT image for simplified dat a retrieval during patient transitions. Cryptographic techniques secure pa ssword transfer during patient mobility across networks. Our model leverag es the mutability of NFT data to introduce 'updatable patient-specific NFT s' for accommodating dynamic medical data while using the immutability of NFT data to establish an ownership mechanism for patients that ensures pri vacy\, uniqueness\, and a trusted sharable protocol. This approach seamles sly integrates new patient records in real time on the public blockchain. To evaluate the feasibility\, a scoping study is conducted using a medical test network to explore Hyperledger blockchain capabilities in healthcare records management (HRM). Building on insights gained\, the scope expande d to two blockchain medical networks\, engaging multiple institutions in i mplementing and testing the integration of medical records on IPFS within the private blockchain network via updatable NFTs on a public blockchain. Performance analysis confirms feasibility and effectiveness and validates practical application potential.\n DTSTART:20240315T140000Z DTEND:20240315T160000Z LOCATION:Room 603\, McConnell Engineering Building\, CA\, QC\, Montreal\, H 3A 0E9\, 3480 rue University SUMMARY:PhD defence of Ghassan Al-Sumaidaee – Blockchain Tokens as Univers al Encrypted Access: A Comprehensive System for Healthcare Information Net works URL:/ece/channels/event/phd-defence-ghassan-al-sumaida ee-blockchain-tokens-universal-encrypted-access-comprehensive-system-35596 6 END:VEVENT END:VCALENDAR