Compare the Transaction Finality of PoA to a Pure PoW System

Transaction finality in PoA is generally considered faster and more certain than in a pure PoW system like early Bitcoin. In PoW, finality relies on waiting for several subsequent blocks to confirm the transaction, known as deep confirmation.

PoA achieves finality upon the PoS signing phase, as the validators commit to the block. The combination reduces the probability of chain reorganization, leading to quicker economic finality.