Hertz is a Algorithm Based Asset (ABA) which is pegged against the USD and modified to oscillate between rising the price feed and decreasing it in a predictable manner, thus we create phases of buying and selling pressure constantly back and forth forever. The amplitude is 14%, and the period is 28 days, so the price feed should vary predictably 2% per day.
The Hertz ABA is currently 42% activated it'll likely be active within a couple weeks. A Committee global variable change request has been submitted to enable more private price feed publishers than 10.