Consensus mechanisms are all known as the fundamental which is right behind the blockchain technology which is built after ensuring that all participants in a distributed network agree on that of an established state of the ledger that runs without the interest of the central authority. These mechanisms maintain security, integrity, and decentralization while preventing issues like double spending and fraud.
Across the this ledger known as the onsensus Mechanisms has the following mechanisms which includes the likes of Proof of Work (PoW) which is the mechanism that the first cryptocurrency Bitcoin run on and as as the Ethereum (before Ethereum 2.0)
Also in line with the mechanism involves the Proof of Stake (PoS) which is the mechanism that makes use of which is the Ethereum 2.0, which accommodates the likes of Cardano, Solana in it's kinds of operation
Which involves the likes of different validators that focus on staking which involves (lock up) their cryptocurrency to participate in block creation.
Within this space involves the likes of Delegated Proof, Proof of Authority (PoA) and as much as Proof of Burn (PoB) alongside with Proof of Elapsed Time (PoET)
With the likes of Hybrid Consensus Mechanisms, therefore the mechanisms are necessary for that of blockchain security and functionality.
