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Fixed Target Root Construction #1155

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Jun 10, 2019
Merged

Fixed Target Root Construction #1155

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6 changes: 3 additions & 3 deletions specs/validator/0_beacon-chain-validator.md
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Original file line number Diff line number Diff line change
Expand Up @@ -297,11 +297,11 @@ Set `attestation_data.beacon_block_root = signing_root(head_block)`.
* Set `attestation_data.source_epoch = head_state.current_justified_epoch`.
* Set `attestation_data.source_root = head_state.current_justified_root`.
* Set `attestation_data.target_epoch = get_current_epoch(head_state)`
* Set `attestation_data.target_root = signing_root(epoch_boundary_block)` where `epoch_boundary_block` is the block at the most recent epoch boundary.
* Set `attestation_data.target_root = epoch_boundary_block_root` where `epoch_boundary_block_root` is the root of block at the most recent epoch boundary.

*Note*: `epoch_boundary_block` can be looked up in the state using:
*Note*: `epoch_boundary_block_root` can be looked up in the state using:
* Let `epoch_start_slot = get_epoch_start_slot(get_current_epoch(head_state))`.
* Let `epoch_boundary_block = head if epoch_start_slot == head_state.slot else get_block_root(state, epoch_start_slot)`.
* Let `epoch_boundary_block_root = signing_root(head_block) if epoch_start_slot == head_state.slot else get_block_root(state, epoch_start_slot)`.

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