Pleasure! We loved the beauty of the word and the meaning behind it. "Actual cost" slots so nicely into the Bitcoin value proposition and the perception of the fiat inflation ponzi.

We're starting with a reward of 20 sats when a learner completes a Path (a course). No ads. We'll be building a subscription model so learners can pay a certain amount in dollars each month for special content, personalized Paths, a sat reward multiplier etc. For data, just a phone number at sign-up.