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[reward-fixes] ffg rewards fix time since finality calculation. crosslink rewards fix cycle in question

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Danny Ryan 2018-09-25 08:27:54 -05:00
parent 5bc73d2051
commit 8b9eb6fa0e
1 changed files with 2 additions and 2 deletions
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specs/casper_sharding_v2.1.md
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@ -378,7 +378,7 @@ Let `time_since_finality = block.slot_number - last_finalized_slot`, and let `B`
For each slot `S` in the range `last_state_recalc - CYCLE_LENGTH ... last_state_recalc - 1`:
* Let `total_participated_deposits` be the total balance of validators that voted for the correct hash in slot `S` (ie. the hash that actually is the hash of the block at that slot in the current chain); note that in the normal case, every validator will be in one of the `CYCLE_LENGTH` slots following the slot and so can vote for a hash in slot `S`. If `time_since_finality <= 2 * CYCLE_LENGTH`, then adjust participating and non-participating validators' balances as follows:
* Let `total_participated_deposits` be the total balance of validators that voted for the correct hash in slot `S` (ie. the hash that actually is the hash of the block at that slot in the current chain); note that in the normal case, every validator will be in one of the `CYCLE_LENGTH` slots following the slot and so can vote for a hash in slot `S`. If `time_since_finality <= 3 * CYCLE_LENGTH`, then adjust participating and non-participating validators' balances as follows:
* Participating validators gain `B // reward_quotient * (2 * total_participated_deposits - total_deposits) // total_deposits` (note: this may be negative)
* Nonparticipating validators lose `B // reward_quotient`
* Otherwise, adjust as follows:
@ -387,7 +387,7 @@ For each slot `S` in the range `last_state_recalc - CYCLE_LENGTH ... last_state_
#### Balance recalculations related to crosslink rewards
For each shard S for which a crosslink committee exists in this epoch, let V be the corresponding validator set. Let `B` be the balance of any given validator whose balance we are adjusting, not including any balance changes from this round of state recalculation. For each S, V do the following:
For each shard S for which a crosslink committee exists in the cycle prior to the most recent cycle (`last_state_recalc - CYCLE_LENGTH ... last_state_recalc - 1`), let V be the corresponding validator set. Let `B` be the balance of any given validator whose balance we are adjusting, not including any balance changes from this round of state recalculation. For each S, V do the following:
* Let `total_v_deposits` be the total balance of V, and `total_participated_v_deposits` be the total balance of the subset of V that participated (note: it's always true that `total_participated_v_deposits <= total_v_deposits`)
* Let `time_since_last_confirmation` be `block.slot_number - crosslink_records[S].slot`