Probabilistic Finality Thresholds

Probabilistic finality thresholds define the number of blocks a bridge must wait before it treats a transaction as secure and irreversible. Because probabilistic finality chains never reach a point of absolute certainty, the bridge must decide on a statistical confidence level where the risk of a reorganization is acceptably low.

If the threshold is set too low, the bridge is vulnerable to deep reorganizations; if set too high, the user experience suffers due to excessive wait times. This is a balancing act between safety and efficiency that is central to cross-chain architecture.

Different assets or transaction sizes might require different thresholds to manage the risk-reward profile appropriately. As the network environment changes, these thresholds may need to be dynamically adjusted, adding further complexity to the bridge's operational logic.

It is a critical parameter that dictates the reliability of the entire cross-chain system.