Bitcoin

In Bitcoin Miner, the first currency you're going to farm is Bitcoin. The better and more cards you have, the more bitcoin you'll be getting per second.

However, it always is halved, and you also have to remember -35% commission. Normally, your server's Bitcoin exchange will be approximately from the minimum of 4500 - 5500, unless someone will change it by buying the change rate product. Also it matters how long the server has been running for, so afking the game on a server will increase the rate, there is no known max rate (not counting change rate gamepass).

Minimum rate for exchanging is 4500, and maximum is 100000000. However, changing rate costs 550 Robux. You can exchange your bitcoin into cash in the Exchanger. The worst card will give you 0.00004 BPS (Halved, -35% being 0.000013 BPS), while the best one giving 4,300,000 BPS (Halved, -35% being 2,795,000). Most of the things you can buy are by cash, only a small minority is bought by SCash.

Bitcoin is the most stable and best currency currently to work on, Solaris is very new and can be used if you have plenty of money.