I invested a bit and:
'HIVE_MIN_PAYOUT_HBD': {'amount': '20', 'nai': '@@000000013', 'precision': 3},
Minimum payout is $0.02 for Hive as well, so it would be necessary for your votes to be worth as much (or better: $0.023 seems to be a "safe" value) to ensure the payout.
Dustsweeper is not working yet on Hive.
You know, I was thinking some more about this and I don't see how it could be possible. I routinely vote others at less than 50% and I get curation from such votes. Even on Steem where I have less voting power, I usually earn at least .004 SP/HP. I would imagine if I receive curation, then the author must also receive something.
Yes, from my understanding if you get curation, the author gets reward as well.
And it is possible that you get rewards, when you voted with less than $0.023 payout, but the sum of all votes must be >0.023 (due to my understanding). Maybe you find a comment where the sum is under this threshold (you might simply upvote one of yours, that has its payout soon, e.g. https://steempeak.com/@bil.prag/re-menerva-q8ivhm (payout in 2 days though..) or https://steempeak.com/@moeknows/re-papa-pepper-q8f5xs which has payout in 4 hours and only my vote atm.).
Then you should see the results :)
For Hive it should be the same. (e.g. https://peakd.com/hive-161465/@moeknows/re-harryq11-q8ff3i has only my vote atm and soon its payout).
(man it feels like I just stalked you and your comments.. 😇)