Exploring blockchain: technological foundations, applications, and security concerns

Abstract Blockchain technology is increasingly capturing the interest and adoption of numerous enterprises globally. This paper offers an extensive analysis of blockchain technology, emphasizing its evolution, classifications, underlying technologies, consensus mechanisms, architectural frameworks, and layers. It further delineates a broad spectrum of blockchain applications spanning various sectors including stock trading, healthcare, insurance, digital identity verification, data management, the Internet of Things (IoT), supply chain logistics, electoral systems, and data storage. The inherent benefits of blockchain, including decentralization, anonymity, immutability, integrity, auditability, and transparency, are driving its integration across various industries. Despite these merits, blockchain faces certain impediments that hinder its widespread acceptance among the general populace. This study categorizes these impediments into two primary domains: security issues and blockchain-specific attacks, providing an exhaustive analysis of each. Distinct from other scholarly works that concentrate on security, IoT, or cryptocurrency, this document emphasizes blockchain technology’s state-of-the-art developments and broad adoption. It specifically emphasizes applications that extend beyond digital currencies. Conclusively, the paper explores prospective avenues for future research and developmental goals within the blockchain domain.