Proof of Work
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Technology
Consensus
Proof of Work (PoW) is the original blockchain consensus mechanism, made famous by Bitcoin. Miners compete to solve computationally expensive puzzles to validate transactions and add blocks to the chain. The difficulty automatically adjusts to maintain consistent block times.
Proof of Stake
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Technology
Consensus
Proof of Stake (PoS) is a blockchain consensus mechanism where validators are selected to create new blocks based on the amount of cryptocurrency they stake as collateral, rather than through energy-intensive computation. It is significantly more energy-efficient than Proof of Work.