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Merge pull request #746 from ethereum/min-time-to-exit 

Cannot exit until 2048 epochs (#675 item 21) [redo]
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Danny Ryan 2019-03-11 10:04:06 -06:00 committed by GitHub
parent 2c7c48a4e0 9c2d34d876
commit 8ca303efc5
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1 changed files with 4 additions and 1 deletions
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specs/core/0_beacon-chain.md
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@ -229,8 +229,9 @@ Code snippets appearing in `this style` are to be interpreted as Python code.
| `MIN_SEED_LOOKAHEAD` | `2**0` (= 1) | epochs | 6.4 minutes | | `MIN_SEED_LOOKAHEAD` | `2**0` (= 1) | epochs | 6.4 minutes |
| `ACTIVATION_EXIT_DELAY` | `2**2` (= 4) | epochs | 25.6 minutes | | `ACTIVATION_EXIT_DELAY` | `2**2` (= 4) | epochs | 25.6 minutes |
| `EPOCHS_PER_ETH1_VOTING_PERIOD` | `2**4` (= 16) | epochs | ~1.7 hours | | `EPOCHS_PER_ETH1_VOTING_PERIOD` | `2**4` (= 16) | epochs | ~1.7 hours |
| `SLOTS_PER_HISTORICAL_ROOT` | `2**13` (= 8,192) | slots | ~13 hours | | `SLOTS_PER_HISTORICAL_ROOT` | `2**13` (= 8,192) | slots | ~13 hours |
| `MIN_VALIDATOR_WITHDRAWABILITY_DELAY` | `2**8` (= 256) | epochs | ~27 hours | | `MIN_VALIDATOR_WITHDRAWABILITY_DELAY` | `2**8` (= 256) | epochs | ~27 hours |
| `PERSISTENT_COMMITTEE_PERIOD` | `2**11` (= 2,048) | epochs | 9 days |
### State list lengths ### State list lengths
@ -2465,6 +2466,8 @@ def process_voluntary_exit(state: BeaconState, exit: VoluntaryExit) -> None:
assert validator.initiated_exit is False assert validator.initiated_exit is False
# Exits must specify an epoch when they become valid; they are not valid before then # Exits must specify an epoch when they become valid; they are not valid before then
assert get_current_epoch(state) >= exit.epoch assert get_current_epoch(state) >= exit.epoch
# Must have been in the validator set long enough
assert get_current_epoch(state) - validator.activation_epoch >= PERSISTENT_COMMITTEE_PERIOD
# Verify signature # Verify signature
assert bls_verify( assert bls_verify(
pubkey=validator.pubkey, pubkey=validator.pubkey,