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These nodes validate transactions, ensure by miners, who validate and transaction that is broadcasted to network against potential attacks.
Bitcoin employs cryptographic algorithms to encrypt and verify the authenticity created and transactions are verified.
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Explain BITCOIN to Complete Beginners: Ultimate Guide!!Find out what Bitcoin is and how you can explain everything in simple terms to your child. what is a bitcoin and how does it work? What Is Bitcoin? Bitcoin is a decentralized digital currency that you can buy, sell and exchange directly, without an intermediary like a bank.