Hope this one can answer the question above:
How does the interest paid by BTC 2x work?
Maximiliano Carjuzaa, the CEO, explained more about it at @NoSoySatoshi podcast.
Hit the link below and watch the complete explanation:
https://youtu.be/d7kWscVFTKk am still a bit confused, it is a too short explanation for me, but it is better. I will wait for the written version.