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Update 0_beacon-chain.md

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Justin 2019-06-29 22:52:01 +01:00 committed by GitHub
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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``. Generate a seed for the given ``epoch``.
""" """
return hash( return hash(
get_randao_mix(state, Epoch(epoch + EPOCHS_PER_HISTORICAL_VECTOR - MIN_SEED_LOOKAHEAD)) + # avoid underflow 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))) + hash_tree_root(List[ValidatorIndex, VALIDATOR_REGISTRY_LIMIT](get_active_validator_indices(state, epoch))) +
int_to_bytes(epoch, length=32) int_to_bytes(epoch, length=32)
) )