Definition ∞ Proof-based consensus refers to a category of mechanisms used in blockchain networks to achieve agreement on the state of the distributed ledger. These systems require participants to provide cryptographic evidence or “proof” of work performed or assets held to validate transactions and add new blocks. Examples include Proof of Work (PoW) and Proof of Stake (PoS). This approach ensures network security and decentralization by incentivizing honest participation.
Context ∞ News about cryptocurrency frequently discusses proof-based consensus mechanisms, especially concerning network security, energy consumption, and scalability debates. The transition of major blockchains like Ethereum from PoW to PoS is a prominent example of such discussions. Understanding these mechanisms provides critical context for evaluating a digital asset’s underlying security model and its environmental impact. Reports often highlight the ongoing evolution and implementation of these core technologies.
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