56 lines
2.6 KiB
HTML
56 lines
2.6 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width">
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<title>Parachains Finality Relay</title>
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</head>
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<body>
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<h1>Parachains Finality Relay</h1>
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<p>
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Source Relay Chain is running GRANDPA Finality Gadget. Source Parachain is a parachain of the Source
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Relay Chain. Bridge GRANDPA finality pallet is deployed at Target Chain runtime and is "connected"
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to the Source Relay Chain. Bridge Parachains finality pallet is deployed at Target Chain and is
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configured to track the Source Parachain. GRANDPA Relayer is configured to relay Source Relay Chain
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finality to Target Chain. Parachains Relayer is configured to relay Source Parachain headers finality
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to Target Chain.
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</p>
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<div class="mermaid">
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sequenceDiagram
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participant Source Parachain
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participant Source Relay Chain
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participant GRANDPA Relayer
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participant Parachains Relayer
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participant Target Chain
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Note left of Source Parachain: Best: 125
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Note left of Source Relay Chain: Finalized: 500, Best Parachain at Finalized: 120
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Note right of Target Chain: Best Relay: 480, Best Parachain: 110
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Source Parachain ->> Source Parachain: Import Block 126
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Source Parachain ->> Source Relay Chain: Receives the Parachain block 126
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Source Relay Chain ->> Source Relay Chain: Import block 501
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Source Relay Chain ->> Source Relay Chain: Finalize block 501
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Note left of Source Relay Chain: Finalized: 501, Best Parachain at Finalized: 126
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Source Relay Chain ->> Parachains Relayer: notes new Source Parachain Block 126
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Note left of Parachains Relayer: can't relay Source Parachain Block 126, because it requires at least Source Relay Block 501 at Target Chain
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Source Relay Chain ->> Source Relay Chain: Import block 502
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Source Relay Chain ->> Source Relay Chain: Finalize block 502
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Source Relay Chain ->> GRANDPA Relayer: read GRANDPA Finality Proof of Block 502
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GRANDPA Relayer ->> Target Chain: submit GRANDPA Finality Proof of Block 502
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Note right of Target Chain: Best Relay: 502, Best Parachain: 110
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Target Chain ->> Parachains Relayer: notes finalized Source Relay Block 502 at Target Chain
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Source Relay Chain ->> Parachains Relayer: read Parachain Finality Proof at Relay Block 502
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Parachains Relayer ->> Target Chain: submit Parachain Finality Proof at Relay Block 502
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Note right of Target Chain: Best Relay: 502, Best Parachain: 126
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</div>
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<script src="https://cdn.jsdelivr.net/npm/mermaid@8.8.4/dist/mermaid.min.js"></script>
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<script>mermaid.initialize({startOnLoad: true})</script>
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</body>
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</html>
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