When are SNS neurons given a maturity increase for their participation in voting on a proposal?
Let me first note that whether there are voting rewards at all in a given SNS DAO is up to each individual SNS DAO community.
The SNS is a framework that comes with code that is common to all SNS instances and that is maintained by the NNS community. But individual SNSs can customize their DAO by settings that are called the “nervous system parameters” (see here). Whether and how much voting rewards are given to governance participants is part of these rewards.
Is it one of these three dates?
I was told that the maturity is added to SNS neurons exactly 1 day after a proposal is considered settled which is exactly 4 days after the created date. is this correct? Is it possible that it is a little less than 1 day after a proposal is considered settled?
The short answer is that there is a daily event where governance looks at all proposals and processes the ones that are ready to be settled - those are all proposals for which the voting period is over.
This is why the rewards can be distributed up to one day (but also less) after the proposal deadline is over.
In more detail the values depend again on the settings of each SNS.
The proposal lifecycle is as follows (you can read more details here - even though this is about NNS proposals the high level idea is the same):
- A proposal is submitted (“created” date)
- A proposal has a voting period.
- The voting period for proposals can be chosen by each SNS, but they often start with 4 days as this is the default and can be increased up to 8 days when the proposal is controversial (“wait-for-quiet” algorithm)
- The proposal is either adopted or rejected (“decided” date)
- If the proposal is rejected it is already in a final state.
- If the proposal was adopted, it is executed ("executed date) and then it is also in a final state.
- A proposal can be decided before its voting period ends (because governance makes a decision as soon as the result cannot be turned anymore). In this case, neurons can still vote until the end of the voting period to gain rewards.
- Therefore, a proposal is only ready to be settled once the voting period is fully over. When this is the case, the proposal will be settled and rewards will be distributed in the next reward round - this happens roughly every day.
Hope this clarifies things, let me know if you still have questions!