How can Proof of Work prevent double-spending on the blockchain?

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Double-spending is a problem that plagues digital currencies. It means that someone can spend the same coins twice, undermining the trust and security of the system. How can blockchain technology prevent this from happening? One of the key features of blockchain is the use of proof of work (PoW), a mechanism that ensures that only valid transactions are added to the ledger. In this article, you will learn how PoW works and why it is effective against double-spending attacks.

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