Differential Fuzzing

Differential Fuzzing involves running two or more implementations of the same protocol with the same inputs and comparing their outputs. If the outputs differ, it indicates a potential bug in one of the implementations.

This is an excellent technique for verifying that a new version of a contract or a cross-chain bridge behaves exactly like the original. In financial derivatives, where multiple implementations of a pricing model might exist, this helps ensure consistency and correctness.

It is a powerful way to catch subtle logic errors that might otherwise go unnoticed. It relies on the existence of multiple versions or implementations.

It is a highly effective comparative analysis tool. It provides a reliable check against unintended behavior.