How Do ‘Byzantine Fault Tolerance’ (BFT) Consensus Mechanisms Offer Stronger Finality?
BFT mechanisms, common in PoS systems, achieve absolute finality because they require a supermajority (often two-thirds) of honest validators to explicitly agree on the block order. Once a block is finalized, it is mathematically impossible to revert without slashing the stake of the two-thirds majority, making reversal economically prohibitive and offering a stronger, deterministic form of finality than PoW's probabilistic finality.
Glossar
Honest Validators
Integrity ⎊ Honest validators are network participants in Proof of Stake or similar consensus systems who faithfully follow the protocol rules, accurately validate transactions, and contribute to network security.
Absolute Finality
Settlement ⎊ Absolute finality, within cryptocurrency systems, denotes the irreversible confirmation of a transaction on a distributed ledger, eliminating the possibility of reversal or alteration.