Good read, but I was left a little unclear on where the 15%, 10%, and 5% bonuses come into the…
Gautam Desai
1

If you invested during 15% bonus period with BTC and it is worth 607 USD now it will be counted as 607 * 1.15 = 698.05 USD.

If you invested 1 BTC during 15% bonus it is exactly same as if you invested 1.15 BTC when there was 0% bonus.