Who is miners in smart contracts

Question

In bitcoin, miner verifies transactions, hash the block and provide proof of work. In ethereum there is no proof of work, so what will miners do? Is node who calls function is miner?

Answer 1

Proof of work is used as a consensus algorithm in bitcoin. Ethereum and Hyperldger have different consensus
algorithm.

In Ethereum, the consensus algorithm is Proof of Stake and miners validate the ethereum.

In Hyperledger, the consenses algorithm is PBFT and the peers will call the smart contract.