@tanyeeping23

Proof of Work (PoW), Proof of Stake (PoS), Delegated Proof of Stake (DPoS), and Practical Byzantine Fault Tolerance (PBFT) are prominent blockchain consensus mechanisms. PoW, used by Bitcoin, relies on computational power to solve cryptographic puzzles, ensuring security but consuming significant energy. PoS, as in Ethereum 2.0, selects validators based on staked assets, reducing energy use but risking centralization. DPoS, like in EOS, involves elected delegates voting on behalf of stakeholders, enhancing scalability but potentially compromising decentralization. PBFT, suited for permissioned blockchains, achieves consensus through voting rounds, offering high efficiency and fault tolerance but requiring trust in a limited set of nodes. Each mechanism balances security, scalability, and decentralization differently.

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