You can check the “Coffee with milk index made by Bloomberg” https://www.bloomberg.com/features/2016-venezuela-cafe-con-leche-index/
Government “set” the prices of some goods and what happens is that they set the price is under the production cost. But now people just don’t care, price is set at 90 BsS. per kilo (which is around 45 usd cents) none wants to sell at that price, people is selling it at around 700 Bs. (3 USD) and nothing happens.
Government ordered all the banks to show your balance in petro cryptocurrency as well (Government cryptocurrency), if you have 3600 BsS. (15 USD) in your account it will show 1 Petro. Even BBVA and Citibank had to do this.
You can check the 24h volume here http://dolarbeta.com/ and the last week volumen using Coindance