Blockchain technology stands out as a pioneer in the digital transformation. Among its fundamental principles are distributed structure, immutability, and reliability. This digital ledger represents a continuously growing chain of data organized in packets called information blocks that are interconnected. Blockchain has various applications, not only in securing and transparently recording transactions for cryptocurrencies but also in numerous sectors. One of the most well-known applications of blockchain is in cryptocurrencies. Facilitating the transfer of digital assets like Bitcoin has significantly contributed to the popularity of this technology. However, blockchain is not confined to the financial sector; it is revolutionizing industries such as healthcare, logistics, energy, and more. This article will delve into the fundamental features of blockchain, how it operates, and its applications across different sectors. With its distributed structure ensuring reliability and the immutability feature preventing data manipulation, blockchain has the potential to make business processes more transparent and efficient. Blockchain continues to shape the future of the digital world.