An easy to understand, step by step explanation of Blockchain and Cryptocurrencies. Blockchain and cryptocurrency are revolutionary technologies that have the potential to transform various industries, from finance to supply chains, healthcare, and beyond. Blockchain and cryptocurrency have laid the foundation for a new decentralized era, challenging traditional systems of finance, governance, and beyond. Understanding the core principles of these technologies—decentralization, cryptography, and consensus—is key to navigating their potential and limitations.