A useful way to think about it: all miners validate, but not every validating node mines. Many nodes simply verify and relay data without ever trying to produce a block. So in PoW, validating is the broad activity, and mining is the specific job of creating new blocks.
The protocol then selects validators to propose new blocks or to attest that a block is valid. In PoS blockchains, selection is not based on computing power. Instead, it usually combines randomness with the size of the stake, so a larger stake can mean a higher chance of being chosen to validate a block.
In PoS, a validator that does its job correctly earns rewards, often from newly issued tokens and a share of transaction fees. The system also has penalties.
Proof-of-work blockchains use a different incentive model: miners earn block rewards and fees, but there is no staked collateral to slash. An inefficient or dishonest miner is naturally penalized by the high cost of mining: if a miner breaks the rules, the rest of the network simply rejects its blocks, so it loses the energy and money it spent with nothing to show for it.
Running a validator can require technical setup and a significant amount of tokens. For that reason, many proof-of-stake networks let smaller holders delegate their tokens to an existing validator instead.
The holder keeps ownership of their tokens while helping the validator secure the network, and they typically share in the rewards. This makes it possible to take part in securing a blockchain without running the hardware yourself.
Just as proof-of-stake lets small holders delegate to a validator, proof-of-work has its own way for smaller participants to take part: mining pools. Mining on a large network alone is difficult, because a single miner with limited computing power has a very low chance of being the one to add the next block and earn the reward.
A mining pool solves this by letting many miners combine their computing power and work together. When the pool succeeds in adding a block, the reward is shared among the participants in proportion to the work each contributed. This gives individual miners smaller but steadier payouts, instead of rarely, if ever, winning a full block reward on their own.
The term 'difficulty bomb' denotes the increase in mining difficulty in Ethereum, as part of its migration ...
The sum of coins awarded by the blockchain protocol to cryptocurrency miners for each successfully mined an...
A mechanism to punish malicious behavior in blockchains that use the Proof of Stake (PoS) consensus mechanism.
Binance Academy Editorial