Between a host and a guest wagering system: for pari-mutuel wagering the guest receives and the host passes current dividends for active pools; for fixed odds wagering with dynamic prices the guest receives and the host passes current odds, payouts and prices whenever they change; and the host passes every change of event status to the guest, including withdrawn or reinstated selections, altered start times, markets opened or closed, results entered, modified or confirmed and events cancelled.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.