The CME CF Ether-Dollar Reference Rate (ETHUSD_RR) is a once a day benchmark index price for Ether that aggregates trade data from multiple Ether-USD markets operated by major cryptocurrency exchanges that conform to the CME CF Constituent Exchange Criteria. Calculated every day since its launch on 14th May 2018, it is the most trusted source for Ether pricing and the pre-eminent price benchmark for Ether risk settlement being a Registered Benchmark under UK BMR. The Ether-Dollar Reference Rate is the settlement index for contracts listed by Crypto Facilities MTF.