Guarantee engine

The Guarantee Engine is a smart contract deployed on the Ethereum Mainnet (the home chain) that is responsible for issuing guarantees during challenge flows.

It is designed to remain as general as possible, managing a list of guarantee implementations that verify the correctness of settlements. The guarantee engine works in tandem with the Transciever contracts, which act as bridge adapters, ensuring compatibility across different chains.

The SafeDAO owns and governs the guarantee engine, making it the central authority for configuring and managing guarantees.