Introduction Blockchain is a modern digital technology that allows data to be stored and shared in a secure, transparent, and decentralized manner. It has gained global attention due to its role in cryptocurrencies, but blockchain technology is much broader and is used in many industries such as finance, healthcare, supply chain, and digital security. What Is Blockchain? Blockchain is a distributed digital ledger that records transactions across multiple computers in a network. Instead of storing data in a single central location, blockchain stores information in blocks that are linked together in a chronological chain. Each block contains transaction data, a timestamp, and a cryptographic link to the previous block. How Blockchain Works When a transaction is created, it is verified by multiple participants (called nodes) in the network. Once verified, the transaction is grouped with others into a block. This block is then added to the existing blockchain, making the data permanen...
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