Exploring Blockchain Technology: Applications and Insights Across Multiple Fields

Blockchain is a digital recording technology where each block contains encrypted data linked to previous blocks, forming an immutable and transparent sequence. This review systematically analyzes the applications and evolution of blockchain technology across multiple sectors from 2021–2023. peer-reviewed articles focused on key areas such as finance, healthcare, energy, and supply chain management. The findings highlight blockchain's transformative potential, including its ability to enhance security through encryption and decentralization, improve trust and data integrity, and eliminate intermediaries, enabling faster transactions and cost reduction. However, challenges such as scalability issues, high energy consumption in cryptocurrency mining, privacy concerns due to the immutability of records, and the need for regulatory adaptation remain significant barriers to widespread adoption. This review provides a comprehensive overview of blockchain's opportunities and limitations, offering valuable insights for researchers and practitioners aiming to leverage this technology in various fields.