You can win BKD, which you can exchange for any currency, by referring people to the game. The affiliate program grants a percentage of every wager made by the players you referred. Your referrals don’t need to win for you to get a commission.
You will get 0.3% of all the money wagered by your referrals. To see and claim the BKD you won by referring people, go to the sidebar on the left of the screen, click on the Affiliate tab 🤝 and then on Claim. You can convert your BKD to any currency when you claim them.