Aren't you slightly worried that this message might come back to bite you if you ever get investigated for anything and someone goes through your social media history looking for any evidence of lawbreaking?
Why even go thru the hassle of using bitcoins? You could just exchange it with the guy on the street for pesos. Not sure about ten years ago. Right now, you can even western union money to yourself at the blue rate. I am sure you can even just pay people in USD in many cases.
If you go to downtown to the Precedential Office ("Casa Rosada") and walk just half a mile you will meet like four or five arbolitos ("little tree") per block. They are a person standing in the street chanting "Dollar, reais, exchange". They have also Euros, and probably Uruguayans pesos, and other coins, or they will know where to ask. That's in plain sight, at noon, in a mayor commercial street, a few blocks away from the President.
And if you need to exchange more money outside the official market there are cuevas ("caverns") that are just slightly hidden offices. They are in the same area.
(Most are "honest" people working in a "alternative" market, but there are also shady one that can give you fake bills or call a thief.)