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feat(node/service): Delay sequencer's view of L1 chain#2568
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Pull Request Overview
This PR implements a confirmation-delayed provider for the sequencer's L1 origin selector to prevent selecting L1 origins too close to the chain tip, reducing reorganization-related issues.
- Introduces
DelayedL1OriginSelectorProviderthat wraps the existing provider and delays block-by-number requests based on a configurable confirmation depth - Adds L1 head tracking to the sequencer context to enable the delay logic
- Updates sequencer configuration to include the L1 confirmation delay parameter
Reviewed Changes
Copilot reviewed 7 out of 8 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
crates/node/service/src/service/core.rs |
Adds L1 head receiver to sequencer context |
crates/node/service/src/lib.rs |
Exports new DelayedL1OriginSelectorProvider type |
crates/node/service/src/actors/sequencer/origin_selector.rs |
Implements the delayed provider with confirmation depth logic |
crates/node/service/src/actors/sequencer/mod.rs |
Exports the new delayed provider type |
crates/node/service/src/actors/sequencer/config.rs |
Adds L1 confirmation delay configuration field |
crates/node/service/src/actors/sequencer/actor.rs |
Updates sequencer to use delayed provider and handle new configuration |
crates/node/service/src/actors/mod.rs |
Re-exports the delayed provider type |
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refcell
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Jul 28, 2025
refcell
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Jul 28, 2025
refcell
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Jul 28, 2025
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This doesn't update the derivation pipeline's view of the l1 chain though like the issue suggests right?
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Yeah not yet. Just for the sequencer. The L1 conf depth in the derivation pipeline will be split into a separate ticket. |
theochap
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Dec 10, 2025
## Overview Adds the confirmation-delayed provider for the sequencer's L1 origin selector. This provider holds a reference to the L1 chain's head, and delays any block-by-number requests by a configurable amount. This prevents the sequencer from selecting an origin too close to the tip of the chain, resulting in fewer L1 origin selections that are reorganized out. closes op-rs/kona#2401
theochap
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Jan 14, 2026
## Overview Adds the confirmation-delayed provider for the sequencer's L1 origin selector. This provider holds a reference to the L1 chain's head, and delays any block-by-number requests by a configurable amount. This prevents the sequencer from selecting an origin too close to the tip of the chain, resulting in fewer L1 origin selections that are reorganized out. closes #2401
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Overview
Adds the confirmation-delayed provider for the sequencer's L1 origin selector. This provider holds a reference to the L1 chain's head, and delays any block-by-number requests by a configurable amount. This prevents the sequencer from selecting an origin too close to the tip of the chain, resulting in fewer L1 origin selections that are reorganized out.
closes #2401