How Does Proof of Work Secure Blockchains?

Proof of Work (PoW) is the original consensus mechanism that powers Bitcoin, but how does it actually keep the network secure? This video explores the surprising ways PoW uses computational puzzles to prevent fraud and maintain trust in a decentralized system. You'll learn why solving these puzzles is so energy-intensive and how this mechanism ensures that no single party can dominate the network. By the end, you'll understand why PoW was groundbreaking and the trade-offs it involves for security and energy efficiency.

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