Hi, @pervitin -

Are curation rewards calculated using the same algorithm as on Steem? If not, how?

Yes, curation rewards are calculated using the same algorithm as Steem.

Is there an early upvoting penalty window? If yes, is it linear and how many minutes long is it?

This is a good question. I believe it follows the same function as Steem in terms "upvote window" penatly time. I'll reach out to a few folks to get clarifiction on this and ping you on this thread.

Does powering down take five weeks and you get your coins in five equal installments once per week?

Correct. You will get in 5 installments over 5 weeks.

Good questions.