Economic Finality

A practical finality guarantee where reversing a confirmed transaction would require an attacker to forfeit or spend more economic value (staked tokens, mining hardware) than the value of the transaction itself. Unlike absolute cryptographic finality, economic finality is probabilistic and depends on the cost of attack relative to the value at stake. In Proof of Stake systems, economic finality is achieved when enough staked capital backs the confirmed state that slashing penalties make reversal economically irrational.