ClickBank alternative with BTC payout?

Any recommendation?

Out of the bigger sites i don't think you can find any, which provide BTC payments for affiliates. I mean sites such as JVZoo, CJ, ShareASale, Click2Sell etc. You might be able to find some smaller, lesser-known networks, but in that case you need to look into how trustable they are.

Usually, outside of the crypto affiliate programs, none have crypto as an accepted payment.