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Explicitly parent_root check in state transition #647

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Explicitly parent_root check in state transition #647

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5 changes: 5 additions & 0 deletions specs/core/0_beacon-chain.md
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Expand Up @@ -117,6 +117,7 @@
- [Block roots](#block-roots)
- [Per-block processing](#per-block-processing)
- [Slot](#slot-1)
- [Parent root](#parent-root)
- [Proposer signature](#proposer-signature)
- [RANDAO](#randao)
- [Eth1 data](#eth1-data)
Expand Down Expand Up @@ -1652,6 +1653,10 @@ Below are the processing steps that happen at every `block`.

* Verify that `block.slot == state.slot`.

#### Parent root

* Verify that `block.parent_root == get_block_root(state, block.slot - 1)`.

#### Proposer signature

* Let `block_without_signature_root` be the `hash_tree_root` of `block` where `block.signature` is set to `EMPTY_SIGNATURE`.
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