Robonomics platform runs on Ethereum network and enables robots to offer their services, so all transactions are executed in the Ethereum network.

When the coordinated supply and demand for service delivery by CPS (Robot) appears in the communication channels, lighthouses send a transaction for creating a contract liability. It includes technical and economic parameters of both parties’ agreement. As a result of service implementation and its verification by observation network lighthouses finalize the liability. Thus, we get two transactions in Ethereum blockchain: one for creation and another one for implementation of the CPS liability.

So if the robot coudn't provide a user with a service, a liability contract cannot be finalized.

CPS services’ users being interested in control over implementation of liabilities accepted by machines with the help of commission fees stimulate observation networks to analyze operation logs appearing during the implementation of behavioral model by CPS.