What is that vertical jump in the profit line that occurred on the 12th, 15th, and 16th?
Someone losing a lot of bitcoins with just a few rolls of the dice.
Lots of people use martingale betting on the site. They start by betting a very small amount relative to the bankroll they have available, and double their bet until they win. So long as they win one roll before the doubling gets out of hand, they are guaranteed a small profit. This happens over and over, with the player taking a small profit from the site very reliably, and the siite profits gradually go down. This is balanced by players not using martingale betting, who gradually lose due to the house edge.
Eventually the martingale players hit 10 or 15 or whatever losses in a row, and lose their entire bankroll. This shows up as a vertical jump in the profit chart.
Apparently this style of betting is particularly common when people play with Bitcoin, and I'm not sure why.
Here's a typical profit/loss chart of a single martingale player. Thousands of small wins followed by a catastrophic loss that wipes out all previous wins:
Add a whole bunch of similar looking charts together and you get something like the site profit chart...
