I love the take on the theme! Really fun and smart. Just so you know, on Firefox I had some issues with the text as it's not appearing (it's making weird squares) but it's working fine on Safari. 
Also, at some point the game started lagging like crazy which prevented me from paying my debt (I reached like 100k$). I think it's the multiple occurence of the numbers in the botton which must be huge at some point. I hope you can fix it so I can finish the game!
Congrats!

I thought it was well-put-together. I didn't love the viruses -- instead of feeling like an enjoyable challenge, it just sort of felt like a chore, eventually a "click on another tab and hit a snooze button" chore. I don't think I needed more than 1 or 2 levels of the virus thing, I don't think I ever used more than two charges before one came back.

I like the idea of a market and timing it, but in this case I'm not sure it added much -- given how slowly the market moved, and how often upgrades would give you big increases, it seemed like the best move was just "sell regardless".

If I ever got a virus that whistled at me like that constantly, I would get a new computer. I really liked the different virus mini-games. I would have like to be able to purchase some sort of automation for selling BTC without needing to hold the button down. I spent the majority of the game on that screen, even ignoring viruses and going mad while waiting to hit $1,000,000. I didn’t bother fully upgrading everything. I liked the exchange mechanic too, but it would have been nice to see the price changes be more meaningful. Maybe bigger swings would make me want to focus on increasing my mining capacity while the price is low on exchange and focus on selling when high. In the current state there was really no reason to wait for a better price. Overall a great game, very polished, and I enjoyed it! Nice work!