Blockchain Consensus Mechanisms are protocols or algorithms used to achieve agreement among multiple nodes in a distributed network on the validity and ordering of transactions recorded in a blockchain ledger. Popular consensus mechanisms include Proof of Work (PoW), Proof of Stake (PoS), Delegated Proof of Stake (DPoS), Practical Byzantine Fault Tolerance (PBFT), and Proof of Authority (PoA). Each consensus mechanism has its own advantages, trade-offs, and security properties, influencing factors such as decentralization, scalability, energy consumption, and transaction finality in blockchain networks.
