Once a sufficient volume of debt instruments at different maturities exists, the market itself can be expected to develop derivative instruments based on them. Moreover, it should not be too difficult for international institutions, working with private banks, to foster the establishment of a clearing arrangement for private SDR deposits.
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.