A dynamic spectrum arbitrage (DSA) system may include a dynamic spectrum policy controller (DPC) and a dynamic spectrum controller (DSC) that together dynamically manage the allocation and use of resources (e.g., spectrum resources) across different networks. The DSC and DPC may be configured communicate using a DSAAP protocol, component, or communication message. For example, the DSC may be configured to receive a list of resources that are available for bidding via a communication link to DPC using a DSAAP protocol, generate a bid request message to bid on a resource in the received list of resources, and send the bid request message to the DPC. The DPC may receive the bid request message from the DSC, determine whether the bid request message is valid, determine whether the DSC is a winner bidder, and sending a bid won message to the DSC via the communication link using a DSAAP protocol.