There is actually a really cool website that lets you make Bids/Asks for BTC to Bolivares Fuertes (BsF). Called SurBitcoin.
https://surbitcoin.comIt says you can connect your Venezuelan bank account if you have one.
The problem is, not that many people have bank accounts and the minimum wage is set at 15,051.15 Venezuelan bolivars (VEF 15,051.15) per month.
According to dolartoday which is the internet website for the black market rate that dollars are going for in Venezuela. That's about $14 FOR THE MONTH.
A lot of the people live in third world conditions and this has only been exacerbated by the Chavista regime. The Maduro Presidency being the worst part.
I do believe it's legal. Those miners were probably arrested on mad eup charges just so the intelligence services could steal their BTC. The government is made up of nothing but thugs at this point. Straight up. Every libertarian conspiracy you've ever heard about government is almost asssuredly true in Venezuela. Price controls, censorship of media, political incarceration, government abuse and over reach. Corruption on all levels.
The interesting thing is that if you do have Bolivares, you could buy BTC at a huge discount. At current prices on SurBitcoin, you could buy BTC at the equivalent of $435. Everything is cheaper there by our standards but in theirs it's incredibly expensive. It's really sad.