I’ve just started working on a parametric model for Bitcoin-backed lending.

The goal is to define key variables: if you want to withdraw an “X” value each year, how much “Y” Bitcoin would be required to refinance that annually—based on dynamic parameters.

At first glance, it looks sustainable. After 20 years, you’d only need to part with a fraction of the Bitcoin you lived off.

I’ll share the details once I’ve finalized and double-checked the key numbers.

The assumptions I’m using:

– 7% annual USD inflation

– LTV increasing from 40% to 65%

– Bitcoin interest rates declining from 11% to 3.5% by 2045

What do you think, @jackmallers?