How Does the ‘Supermajority’ Concept Work in PoS Finality?
In PoS, deterministic finality is achieved when a supermajority, typically two-thirds of the total staked value, votes to attest to a block. Once this threshold is reached, the block is finalized and cannot be reversed without slashing the stake of the two-thirds of validators who attested to it, making reversal economically prohibitive.
Glossar
Deterministic Finality
Consensus ⎊ Deterministic finality, within distributed ledger technology, signifies an irreversible state achieved through a consensus mechanism, eliminating probabilistic finality inherent in systems relying on confirmations.
Supermajority
Decision ⎊ The requirement for a supermajority dictates the minimum necessary level of agreement among stakeholders or validators to enact a critical protocol change or confirm a block.