Ways could also be found to connect the private and the official SDR market (something that did not exist in the case of the ECU), either by easing the legal restrictions on the use of official SDRs or through an institution acting as a clearinghouse.
6  BIS Review 55/2010  In order to facilitate the transition to an SDR-based system, it may in any case be necessary to set up at the IMF SDR-denominated reserve accounts where members could deposit their currency reserves and obtain in exchange SDR deposits, as suggested by Governor Zhou.