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Blockchain
What is Blockchain? Blockchain is a type of digital record system where information is stored in blocks. These blocks are connected in a chain, making it very safe and secure. It is shared across many computers, so no single person controls it. How Does It Work? When a transaction (like sending money) happens, it is checked by many computers. Once approved, it is added to a block. This block joins the chain of previous blocks. After it is added, no one can change it. This makes the system trustworthy. Key Features Decentralized – No central control. Secure – Protected by strong coding. Transparent – Everyone in the network can see it. Permanent – Data cannot be erased or changed. Uses of Blockchain Bitcoin and other cryptocurrencies Tracking goods in supply chains Online voting systems Health records Smart contracts
