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Update 0_beacon-chain.md

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Justin 2019-03-08 18:13:05 +01:00 committed by GitHub
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specs/core/0_beacon-chain.md
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@ -34,6 +34,7 @@
- [`BeaconBlockHeader`](#beaconblockheader) - [`BeaconBlockHeader`](#beaconblockheader)
- [`Validator`](#validator) - [`Validator`](#validator)
- [`PendingAttestation`](#pendingattestation) - [`PendingAttestation`](#pendingattestation)
- [`HistoricalBatch`](#historicalbatch)
- [Beacon transactions](#beacon-transactions) - [Beacon transactions](#beacon-transactions)
- [`ProposerSlashing`](#proposerslashing) - [`ProposerSlashing`](#proposerslashing)
- [`AttesterSlashing`](#attesterslashing) - [`AttesterSlashing`](#attesterslashing)
@ -452,6 +453,17 @@ The types are defined topologically to aid in facilitating an executable version
} }
``` ```
#### `HistoricalBatch`
```python
{
// Block roots
'block_roots': ['bytes32', SLOTS_PER_HISTORICAL_ROOT],
// State roots
'state_roots': ['bytes32', SLOTS_PER_HISTORICAL_ROOT],
}
```
### Beacon transactions ### Beacon transactions
#### `ProposerSlashing` #### `ProposerSlashing`
@ -2191,7 +2203,11 @@ def finish_epoch_update(state: BeaconState) -> None:
state.latest_randao_mixes[next_epoch % LATEST_RANDAO_MIXES_LENGTH] = get_randao_mix(state, current_epoch) state.latest_randao_mixes[next_epoch % LATEST_RANDAO_MIXES_LENGTH] = get_randao_mix(state, current_epoch)
# Set historical root accumulator # Set historical root accumulator
if next_epoch % (SLOTS_PER_HISTORICAL_ROOT // SLOTS_PER_EPOCH) == 0: if next_epoch % (SLOTS_PER_HISTORICAL_ROOT // SLOTS_PER_EPOCH) == 0:
state.historical_roots.append(hash_tree_root(state.latest_block_roots + state.latest_state_roots)) historical_batch = HistoricalBatch(
block_roots=state.latest_block_roots,
state_roots=state.latest_state_roots,
)
state.historical_roots.append(hash_tree_root(historical_batch))
# Rotate current/previous epoch attestations # Rotate current/previous epoch attestations
state.previous_epoch_attestations = state.current_epoch_attestations state.previous_epoch_attestations = state.current_epoch_attestations
state.current_epoch_attestations = [] state.current_epoch_attestations = []