A Review on Blockchain Technology

Blockchain technology has emerged as a disruptive force with the potential to revolutionize various industries by offering decentralized, secure, and transparent solutions for data management and transactions. Initially conceptualized as the underlying technology for cryptocurrencies like Bitcoin, blockchain has evolved into a versatile tool applicable across diverse domains such as finance, supply chain management, healthcare, and government services. This paper provides an overview of blockchain technology, its fundamental principles, and key components. It explores the decentralized consensus mechanisms, cryptographic techniques, and data structures that underpin blockchain networks, ensuring immutability, transparency, and integrity of recorded transactions. Furthermore, the paper examines the challenges and opportunities associated with blockchain adoption, including scalability, interoperability, regulatory concerns, and environmental impact. Through a comprehensive review of existing literature and case studies, this research elucidates the potential benefits of blockchain technology, such as increased efficiency, reduced costs, enhanced security, and improved trust among participants. Additionally, it highlights ongoing developments, innovations, and future directions in blockchain research and implementation, emphasizing the need for interdisciplinary collaboration and regulatory frameworks to realize the full potential of this transformative technology. Keywords : IOT, blockchain, cryptocurrency, smart contracts, consensus algorithms, internet of things.