Blockchain technology is revolutionizing the way data is stored, shared, and secured across industries. Initially developed as the foundation for Bitcoin, blockchain has evolved beyond cryptocurrencies, offering a decentralized and tamper-proof system that enhances security, transparency, and efficiency. From finance and supply chains to healthcare and voting systems, blockchain is shaping the future of digital transactions. What is Blockchain? Blockchain is a decentralized and distributed ledger that securely and transparently records transactions across numerous computers. Unlike traditional databases controlled by a single entity, blockchain relies on a network of nodes that validate and store transactions, ensuring data integrity and preventing fraud. Each block in a blockchain contains: Transaction Data: Information related to payments, contracts, or records. Cryptographic Hash: A unique identifier for the block. Previous Block Hash: A link to the previous block, forming a con...