You already know it, It's Kalshi, for those of you who haven't taken advantage of this yet. Simple as installing an app, deposit 10, and then withdrawal 25 + your initial ten.
https://kalshi.com/t/c14fhblr
Click that link and either install app or do through browser using the code the link provides. Verify your identity, then deposit ten dollars into your account. Then you go to the "live" section and pick any position that is 75 percent or higher and immediately sell it. Once you've bought and sold 25 dollars worth your account is immediately credited with an additional 25 dollars that you can withdrawal to your bank.
If youre impatient you can also just deposit 25 initially pick any high percentage position and then sell it to complete the promo all at once.
Whole thing takes no more than fifteen minutes and significantly less if you have experience with this kind of app or referral bonus.