Proof of Work (PoW):

PoW secures a blockchain by requiring miners to solve cryptographic puzzles to validate transactions and add new blocks. Successful miners receive block rewards and transaction fees , while attempts to add invalid blocks or alter the ledger result in wasted computational resources, discouraging misconduct and supporting network security.

Proof of Stake (PoS):

PoS selects validators to create new blocks based on the amount of crypto-assets they stake. Validators earn transaction fees for honest participation, while misconduct may result in the loss of staked assets, incentivising correct behaviour and network integrity.

Byzantine-Fault-Tolerant (BFT) Mechanisms:

BFT-based mechanisms (e.g. PoA, PBFT) rely on a predefined set of known validators to confirm transactions and propose blocks. Validators may be rewarded financially or through external incentives, while malicious behaviour can lead to penalties or removal. Network security is maintained as long as a majority of validators act honestly.

No Native Consensus Mechanism:

Some tokens do not operate their own consensus mechanism and instead rely on the consensus of one or more underlying blockchain networks. Incentives depend on the token’s design, such as utility, scarcity, or governance rights.