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eth2.0-specs
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add flag for validate state root

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Danny Ryan 2019-05-13 16:53:28 -04:00
parent a0a2aa90de
commit 5ba90d68e1
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1 changed files with 4 additions and 2 deletions
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6
specs/core/0_beacon-chain.md
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@ -1220,11 +1220,14 @@ Let `genesis_block = BeaconBlock(state_root=hash_tree_root(genesis_state))`.
The post-state corresponding to a pre-state `state` and a block `block` is defined as `state_transition(state, block)`. State transitions that trigger an unhandled excpetion (e.g. a failed `assert` or an out-of-range list access) are considered invalid.
```python
def state_transition(state: BeaconState, block: BeaconBlock) -> BeaconState:
def state_transition(state: BeaconState, block: BeaconBlock, validate_state_root: bool=False) -> BeaconState:
# Process slots (including those with no blocks) since block
process_slots(state, block.slot)
# Process block
process_block(state, block)
# Validate state root if received from external source
if validate_state_root:
process_state_root(state, block)
# Return post-state
return state
```
@ -1579,7 +1582,6 @@ def process_block(state: BeaconState, block: BeaconBlock) -> None:
process_randao(state, block.body)
process_eth1_data(state, block.body)
process_operations(state, block.body)
# process_state_root(state, block)
```
#### Block header