A monitor contract is a specific type of smart contract designed to oversee and manage the execution of other contracts or transactions on a blockchain. Its main role is to ensure compliance and enforce rules set by those primary contracts.Typically, a monitor contract continuously observes the state and behavior of other contracts. It can trigger certain actions if predefined conditions are met, such as alerting users to issues or automatically executing corrective measures.These contracts are useful for maintaining the integrity and security of decentralized applications. By providing oversight, they help prevent fraud, mismanagement, and other potential problems that could arise from autonomous contract execution.In essence, monitor contracts serve as a safeguard. They enhance the reliability of blockchain systems by ensuring that all activities align with established protocols and expectations. This added layer of oversight can build user trust and promote overall system stability.