The SDR was created in 1969 as a virtual currency and an international reserve asset. Its value, set every day, is determined by a basket of currencies comprising the U.S. dollar (41.9 percent), the euro (37.4 percent), pound sterling (11.3 percent), and yen (9.4 percent).
Why don't they launch an SDR currency ?
The SDR was created in 1969 as a virtual currency and an international reserve asset. Its value, set every day, is determined by a basket of currencies comprising the U.S. dollar (41.9 percent), the euro (37.4 percent), pound sterling (11.3 percent), and yen (9.4 percent).
https://www.weforum.org/agenda/2015/11/what-is-the-imfs-currency-basket/