This seems to be going towards the system which soviet union used. The official
rate is an illusion created by the government while actual market exchange is
basically illegal:
The Soviet Union officially valued the ruble in the planned economy at an
average of 0.74 руб per USD ... However, as the ruble was not internationally
exchangeable and as Soviet citizens could not legally own foreign currency,
rubles changed hands in the black market at an average of 4.14 руб per
dollar in the same period
The Soviet Union officially valued the ruble in the planned economy at an average of 0.74 руб per USD ... However, as the ruble was not internationally exchangeable and as Soviet citizens could not legally own foreign currency, rubles changed hands in the black market at an average of 4.14 руб per dollar in the same period
https://en.wikipedia.org/wiki/Soviet_ruble#Exchange_rates