The Gold Standard  

.. but afraid to ask, is here. That is a IMF fact sheet on Special Drawing Rights (SDR). An interesting excerpt from this factsheet
A proposal for a special one-time allocation of SDRs was approved by the IMF’s Board of Governors in September 1997 through the proposed Fourth Amendment of the Articles of Agreement. This allocation would double [...]

China’s central bank governor posted a note on the web site of the People’s Bank of China proposing a new global reserve currency. The key points are here:

They may either fail to adequately meet the demand of a growing global economy for liquidity as they try to ease inflation pressures at home, or create excess [...]