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Update docs (paritytech#2242)
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bkontur authored and serban300 committed Apr 9, 2024
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12 changes: 6 additions & 6 deletions bridges/docs/polkadot-kusama-bridge-overview.md
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Expand Up @@ -24,9 +24,9 @@ You won't be able to directly use bridge hub transactions to send XCM messages o
to use other parachains transactions, which will use HRMP to deliver messages to the Bridge Hub. The Bridge Hub will
just queue these messages in its outbound lane, which is dedicated to deliver messages between two parachains.

Our first planned bridge will connect the Polkadot' AssetHub and Kusama' AssetHub. Bridge between those two
parachains would allow AssetHubPolkadot accounts to hold wrapped KSM tokens and AssetHubKusama accounts to hold wrapped DOT
tokens.
Our first planned bridge will connect the Polkadot and Kusama Asset Hubs. A bridge between those two
parachains would allow Asset Hub Polkadot accounts to hold wrapped KSM tokens and Asset Hub Kusama
accounts to hold wrapped DOT tokens.

For that bridge (pair of parachains under different consensus systems) we'll be using the lane 00000000. Later,
when other parachains will join the bridge, they will be using other lanes for their messages.
Expand Down Expand Up @@ -93,13 +93,13 @@ Obviously, there should be someone who is paying relayer rewards. We want bridge
can't use fees for rewards. Instead, the parachains using the bridge, use sovereign accounts on both sides
of the bridge to cover relayer rewards.

Bridged Parachains will have sovereign accounts at bridge hubs. For example, the AssetHubKusama (Kusama Parachain) will
have an account at the Polkadot Bridge Hub. The AssetHubPolkadot (Polkadot Parachain) will have an account at the Kusama
Bridged Parachains will have sovereign accounts at bridge hubs. For example, the Kusama Asset Hub will
have an account at the Polkadot Bridge Hub. The Polkadot Asset Hub will have an account at the Kusama
Bridge Hub. The sovereign accounts are used as a source of funds when the relayer is calling the
`pallet_bridge_relayers::claim_rewards`.

Since messages lane is only used by the pair of parachains, there's no collision between different bridges. E.g.
AssetHubKusama will only reward relayers that are delivering messages from AssetHubKusama. The AssetHubKusama sovereign account
Kusama Asset Hub will only reward relayers that are delivering messages from Kusama Asset Hub. The Kusama Asset Hub sovereign account
is not used to cover rewards of bridging with some other Polkadot Parachain.

### Multiple Relayers and Rewards
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26 changes: 13 additions & 13 deletions bridges/docs/polkadot-kusama-bridge.html
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Expand Up @@ -16,41 +16,41 @@ <h1>Polkadot &lt;&gt; Kusama Bridge</h1>
</p>
<p>
In our architecture, the lane that is used to relay messages over the bridge is determined by
the XCM source and destinations. So e.g. bridge between AssetHubPolkadot and AssetHubKusama (and opposite direction)
the XCM source and destinations. So e.g. bridge between Asset Hubs Polkadot and Kusama (and opposite direction)
will use the lane 00000000, bridge between some other Polkadot Parachain and some other Kusama Parachain
will use the lane 00000001 and so on.
</p>
<div class="mermaid">
flowchart LR
subgraph Polkadot Consensus
polkadot(((Polkadot)))
statemint(((Statemint)))
asset_hub_polkadot(((Polkadot Asset Hub)))
polkadot_bh(((Polkadot Bridge Hub)))

polkadot---statemint
polkadot---asset_hub_polkadot
polkadot---polkadot_bh

statemint-->|Send Message Using HRMP|polkadot_bh
asset_hub_polkadot-->|Send Message Using HRMP|polkadot_bh

polkadot_bh-->|Send Message Using HRMP|statemint
statemint-->|Dispatch the Message|statemint
polkadot_bh-->|Send Message Using HRMP|asset_hub_polkadot
asset_hub_polkadot-->|Dispatch the Message|asset_hub_polkadot
end
subgraph Kusama Consensus
kusama_bh(((Kusama Bridge Hub)))
statemine(((Statemine)))
asset_hub_kusama(((Kusama Asset Hub)))
kusama(((Kusama)))

kusama---statemine
kusama---asset_hub_kusama
kusama---kusama_bh

kusama_bh-->|Send Message Using HRMP|statemine
statemine-->|Dispatch the Message|statemine
kusama_bh-->|Send Message Using HRMP|asset_hub_kusama
asset_hub_kusama-->|Dispatch the Message|asset_hub_kusama

statemine-->|Send Message Using HRMP|kusama_bh
asset_hub_kusama-->|Send Message Using HRMP|kusama_bh
end

polkadot_bh&lt;===&gt;|Message is relayed to the Bridged Chain using lane 00000000|kusama_bh

linkStyle 2 stroke:red
linkStyle 7 stroke:red
linkStyle 8 stroke:red
Expand All @@ -64,4 +64,4 @@ <h1>Polkadot &lt;&gt; Kusama Bridge</h1>
mermaid.initialize({ startOnLoad: true });
</script>
</body>
</html>
</html>
4 changes: 2 additions & 2 deletions bridges/modules/messages/README.md
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Expand Up @@ -33,8 +33,8 @@ is the runtime developer who defines what message lane and message mean for this

In our [Kusama<>Polkadot bridge](../../docs/polkadot-kusama-bridge-overview.md) we are using lane
as a channel of communication between two parachains of different relay chains. For example, lane
`[0, 0, 0, 0]` is used for AssetHubPolkadot <> AssetHubKusama communications. Other lanes may be used to bridge
another parachains.
`[0, 0, 0, 0]` is used for Polkadot <> Kusama Asset Hub communications. Other lanes may be used to
bridge other parachains.

## Message Workflow

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