Then, MDC will set this arbitration as a pending case and wait for the Maker to provide the Target Tx for 0.5-3 hours (This function can be aggregated in the Maker's client, so the Maker will not miss it). If Maker can provide a correct Target Tx, MDC will get the validity proof from EBC and know the Target Tx matches the Source Tx. MDC will close this arbitration and show the Target Tx to Sender. But, if Maker cannot provide the relevant Target Tx after 0.5-3 hours, Sender can apply the withdrawal and then go to the next step.