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Merge pull request #1221 from ethereum/ralexstokes-patch-3 

Clarify `get_randao_mix` accessor
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Danny Ryan 2019-06-29 16:57:33 -05:00 committed by GitHub
parent 34ad123a46 2a2bd72425
commit aec971928b
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specs/core/0_beacon-chain.md
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@ -786,7 +786,7 @@ def generate_seed(state: BeaconState,
Generate a seed for the given ``epoch``.
"""
return hash(
get_randao_mix(state, Epoch(epoch + EPOCHS_PER_HISTORICAL_VECTOR - MIN_SEED_LOOKAHEAD)) +
get_randao_mix(state, Epoch(epoch + EPOCHS_PER_HISTORICAL_VECTOR - MIN_SEED_LOOKAHEAD)) + # Avoid underflow
hash_tree_root(List[ValidatorIndex, VALIDATOR_REGISTRY_LIMIT](get_active_validator_indices(state, epoch))) +
int_to_bytes(epoch, length=32)
)