IJLTEMAS International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS) IJLTEMAS 2278-2540 IJLTEMAS 593 10.51583/IJLTEMAS.2026.151000074 Cybersecurity Design and Development of a Blockchain-Based Wallet Application: Transforming Traditional Financial Markets into a Secure, Transparent, and Scalable Transaction Platform Ahmadi Fraidon Department of Information Technology, Faculty of Computer Science, Kabul University, Kunduz, Afghanistan Afghanistan Professor Sayed Abid Sadat Assistant Department of Information Technology, Faculty of Computer Science, Kabul University, Takhar, Afghanistan Afghanistan Alem Saviz Abdul Department of Information Technology, Faculty of Computer Science, Kabul University, Samangan, Afghanistan Afghanistan 15 10 865 885 18 10 2026 23 10 2026 07 11 2026 Blockchain Technology Distributed Ledger Technology (DLT) Decentralized Finance (DeFi) Design Science Research (DSR) Smart Contracts Cryptographic Wallet Peer-to-Peer Architecture. Abstract

While blockchain technology promises to resolve the inherent vulnerabilities, opacity, and inefficiencies of traditional financial systems, practical integration remains a significant challenge. This paper presents the design, development, and evaluation of a decentralized, blockchain-based wallet application tailored for modern financial markets. Guided by Design Science Research (DSR) principles, this study employs Agile development and Test-Driven Development (TDD) methodologies to iteratively design, implement, and validate the proposed artifact. The resulting system introduces a hybrid architecture that balances cryptographic decentralization with operational efficiency. Specifically, the network utilizes a role-gated Proof-of-Work (PoW) consensus mechanism featuring a dynamic difficulty adjustment algorithm to ensure stable, secure on-chain block generation among authorized nodes. To facilitate rapid peer-to-peer communication, the architecture implements a scalable Publish/Subscribe (PubSub) protocol powered by Redis. Furthermore, the system uniquely integrates an off-chain MongoDB caching schema to offload read-heavy user interface queries without compromising the cryptographic integrity of the distributed ledger. Empirical simulations confirm that synthesizing these networking and cryptographic components mitigates traditional transaction vulnerabilities and provides a highly available, transparent, and secure alternative for digital asset management.

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