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Add validation description for LightClientBootstrap + Update #306

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Jun 3, 2024
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Add validation description for LightClientBootstrap + Update #306

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16 changes: 16 additions & 0 deletions beacon-chain/beacon-network.md
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Expand Up @@ -250,4 +250,20 @@ random gossip.

#### Validation

##### LightClientBootstrap

While still light client syncing a node SHOULD only allow to store an offered `LightClientBootstrap` that it knows to be canonical.
That is, a bootstrap which it can verify as it maps to a known trusted-block-root.
E.g. trusted-block-root(s) provided through client config or pre-loaded in the client.

Once a node is light client synced, it can verify a new `LightClientBootstrap` and then store and re-gossip it on successful verification.

##### LightClientUpdate

While still light client syncing a node SHOULD NOT store any offered `LightClientUpdate`. It SHOULD retrieve the updates required to sync and store those when verified.

Once a node is light client synced, it can verify a new `LightClientUpdate` and then store and re-gossip it on successful verification.

##### LightClientFinalityUpdate & LightClientOptimisticUpdate

Validating `LightClientFinalityUpdate` and `LightClientOptimisticUpdate` follows the gossip domain(gossipsub) [consensus specs](https://github.com/ethereum/consensus-specs/blob/dev/specs/altair/light-client/p2p-interface.md#the-gossip-domain-gossipsub).
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