| Algorithm | Finality | Reorgs | Fork choice |
|---|---|---|---|
Nakamoto (eg. PoW Ethereum / Bitcoin) | None | Frequent | Longest chain |
GASPER (eg. PoS ethereum) | Every 2-epochs (~12 min) | Very occasional | Chain with strongest support after last finalized block |
Tendermint | Single block (~1-10s) | Never | Only finalized blocks |