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clarifying comment on call to get_ancestor in on_block

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Danny Ryan 2020-01-22 14:31:23 -07:00
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specs/phase0/fork-choice.md
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@ -283,7 +283,7 @@ def on_block(store: Store, signed_block: SignedBeaconBlock) -> None:
# Check that block is later than the finalized epoch slot (optimization to reduce calls to get_ancestor)
finalized_slot = compute_start_slot_at_epoch(store.finalized_checkpoint.epoch)
assert block.slot > finalized_slot
# Check block is a descendant of the finalized block
# Check block is a descendant of the finalized block at the checkpoint finalized slot
assert get_ancestor(store, hash_tree_root(block), finalized_slot) == store.finalized_checkpoint.root
# Check the block is valid and compute the post-state