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Update finality update documentation

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Etan Kissling 2022-06-27 22:36:55 +02:00
parent 99e30328a8
commit 65cfedef22
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1 changed files with 3 additions and 2 deletions
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specs/altair/sync-protocol.md
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@ -170,8 +170,9 @@ def validate_light_client_update(store: LightClientStore,
signature_period = compute_sync_committee_period(compute_epoch_at_slot(update.signature_slot))
assert signature_period in (finalized_period, finalized_period + 1)
# Verify that the `finalized_header`, if present, actually is the finalized header saved in the
# state of the `attested_header`
# Verify that the `finality_branch`, if present, confirms `finalized_header`
# to match the finalized checkpoint root saved in the state of `attested_header`.
# Note that the genesis finalized checkpoint root is represented as a zero hash.
if not is_finality_update(update):
assert update.finalized_header == BeaconBlockHeader()
else: