WHAT IS BLOCKCHAIN

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Imagine a super-secure digital notebook that everyone can use and trust, where transactions are recorded and locked in a way that no one can mess with them. That's blockchain! It's like a high-tech chain of information blocks, managed by lots of people all over the place, so there's no one in charge. This incredible system, backed by secret codes, is not just for tech wizards – it's what makes cryptocurrencies like Bitcoin safe and reliable for everyday use.