Blockchain-based two-level QR Code: A new era of secure data sharing

In today’s digital world, secure data sharing is of paramount importance. This research introduces a blockchain-based two-level QR code system, which provides an innovative solution for secure and efficient data management. The system is structured with two key modules: a user module, allowing controlled access to data, and an admin module, ensuring encrypted data storage and oversight. Each data entry is uniquely linked to a QR code, enabling seamless and secure information retrieval. By leveraging blockchain technology, the system establishes a decentralized and tamper-proof framework that enhances data transparency and mitigates security risks [1,2]. Advanced encryption techniques further fortify the system, safeguarding sensitive information from unauthorized access and ensuring data integrity [3]. This combination of blockchain technology and encryption creates a trustworthy and robust platform for data sharing [4]. Designed for simplicity and reliability, the system offers a user-friendly experience, setting a new benchmark for secure and reliable data management solutions.