Consensus Mechanism
Blockchain FundamentalsUpdated: October 15, 2025
Also known as: Consensus Algorithm, Consensus Protocol
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The process used by blockchain networks to agree on the validity of transactions
The process used by blockchain networks to agree on the validity of transactions (e.g., PoW, PoS).
Consensus mechanisms are the protocols that allow distributed networks to reach agreement on the state of the blockchain without a central authority. Different blockchains use different mechanisms, each with tradeoffs in security, speed, and energy efficiency.