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Clarify where LC proofs are rooted #3065

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Oct 28, 2022
Merged

Clarify where LC proofs are rooted #3065

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20 changes: 10 additions & 10 deletions specs/altair/light-client/sync-protocol.md
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Original file line number Diff line number Diff line change
Expand Up @@ -77,9 +77,9 @@ Additional documents describe how the light client sync protocol can be used:

```python
class LightClientBootstrap(Container):
# The requested beacon block header
# Header matching the requested beacon block root
header: BeaconBlockHeader
# Current sync committee corresponding to `header`
# Current sync committee corresponding to `header.state_root`
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current_sync_committee: SyncCommittee
current_sync_committee_branch: Vector[Bytes32, floorlog2(CURRENT_SYNC_COMMITTEE_INDEX)]
```
Expand All @@ -88,12 +88,12 @@ class LightClientBootstrap(Container):

```python
class LightClientUpdate(Container):
# The beacon block header that is attested to by the sync committee
# Header attested to by the sync committee
attested_header: BeaconBlockHeader
# Next sync committee corresponding to `attested_header`
# Next sync committee corresponding to `attested_header.state_root`
next_sync_committee: SyncCommittee
next_sync_committee_branch: Vector[Bytes32, floorlog2(NEXT_SYNC_COMMITTEE_INDEX)]
# The finalized beacon block header attested to by Merkle branch
# Finalized header corresponding to `attested_header.state_root`
finalized_header: BeaconBlockHeader
finality_branch: Vector[Bytes32, floorlog2(FINALIZED_ROOT_INDEX)]
# Sync committee aggregate signature
Expand All @@ -106,9 +106,9 @@ class LightClientUpdate(Container):

```python
class LightClientFinalityUpdate(Container):
# The beacon block header that is attested to by the sync committee
# Header attested to by the sync committee
attested_header: BeaconBlockHeader
# The finalized beacon block header attested to by Merkle branch
# Finalized header corresponding to `attested_header.state_root`
finalized_header: BeaconBlockHeader
finality_branch: Vector[Bytes32, floorlog2(FINALIZED_ROOT_INDEX)]
# Sync committee aggregate signature
Expand All @@ -121,7 +121,7 @@ class LightClientFinalityUpdate(Container):

```python
class LightClientOptimisticUpdate(Container):
# The beacon block header that is attested to by the sync committee
# Header attested to by the sync committee
attested_header: BeaconBlockHeader
# Sync committee aggregate signature
sync_aggregate: SyncAggregate
Expand All @@ -134,9 +134,9 @@ class LightClientOptimisticUpdate(Container):
```python
@dataclass
class LightClientStore(object):
# Beacon block header that is finalized
# Header that is finalized
finalized_header: BeaconBlockHeader
# Sync committees corresponding to the header
# Sync committees corresponding to the finalized header
current_sync_committee: SyncCommittee
next_sync_committee: SyncCommittee
# Best available header to switch finalized head to if we see nothing else
Expand Down