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U16 contract upgrades #1661

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Auto-fix: Update breadcrumbs, spelling dictionary and other automated…
bradleycamacho Jun 13, 2025
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Add opcm info
bradleycamacho Jun 13, 2025
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Add correct OPCM links
bradleycamacho Jun 13, 2025
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9 changes: 8 additions & 1 deletion pages/notices/upgrade-16.mdx
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Expand Up @@ -24,7 +24,7 @@ This page outlines important changes related to Upgrade 16 for chain operators a

Upgrade 16 contains these main changes:

* **Interop-Ready smart contracts**: Interoperability is critical to realizing the Superchain as a unified network of OP Chains. This upgrade begins the rollout of foundational interoperability features by updating the `OptimismPortal` to handle future cross-chain messaging safely and extensibly. This upgrade does not turn on interop yet.
* **Interop-Ready smart contracts**: Interoperability is critical to realizing the Superchain as a unified network of OP Chains. This upgrade begins the rollout of foundational interoperability features by updating the `OptimismPortal` to handle future cross-chain messaging safely and extensibly. Although Upgrade 16 does not turn interop on, it includes all of the smart contract changes required to support the interop launch date.
* **Stage 1 updates**: Modifications to meet [L2Beat's updated Stage 1 requirements](https://forum.l2beat.com/t/stages-update-a-high-level-guiding-principle-for-stage-1/338) from January 2025, including removal of `DeputyGuardianModule` and updates to `DeputyPauseModule`.
* **Go 1.23 Support in Cannon**: Updates to Cannon to support Go 1.23, allowing OP Stack to benefit from upstream go-ethereum changes.
* **Max gas limit increase**: Update to `MAX_GAS_LIMIT` from 200m to 500m gas after improvements to OP Stack infrastructure and the Cannon proof system.
Expand All @@ -41,8 +41,15 @@ Chain operators must complete two tasks:

Chain operators should be aware that Upgrade 16 involves a one-time invalidation of all existing withdrawal proofs. Users who have proven withdrawals can either finalize withdrawals prior to the activation of Upgrade 16 or will be required to re-prove these withdrawals after the upgrade activates.

### Implementation

If this proposal is accepted, multisig ceremonies will be coordinated to execute upgrade transactions. The following transactions will be executed on the respective chains: `OP`, `Soneium`, `Ink`, `Base`, `Unichain`, `Mode`, `Zora`, `Arena Z`, `Swell`, `World Chain`, and `Metal ` on both Mainnet and Sepolia. Depending on the current state of the chain the execution times will vary. If your Optimism governed chain is not in this list, please reach out to OP Labs Solutions Engineering to coordinate your upgrade. These upgrade tasks will be prepared in the [superchain-ops repo](https://github.com/ethereum-optimism/superchain-ops/tree/main/src/improvements/tasks).

This upgrade will be executed using a newly deployed OP Contracts Manger instance which brings these OP Stack chains to op-contracts/v4.0.0.
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⚠️ Potential issue

Typo in "Manger"
Correct "OP Contracts Manger" to "OP Contracts Manager" and add a comma for clarity:

- This upgrade will be executed using a newly deployed OP Contracts Manger instance which brings these OP Stack chains to op-contracts/v4.0.0.
+ This upgrade will be executed using a newly deployed OP Contracts Manager instance, which brings these OP Stack chains to op-contracts/v4.0.0.
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
This upgrade will be executed using a newly deployed OP Contracts Manger instance which brings these OP Stack chains to op-contracts/v4.0.0.
This upgrade will be executed using a newly deployed OP Contracts Manager instance, which brings these OP Stack chains to op-contracts/v4.0.0.
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🪛 LanguageTool

[uncategorized] ~48-~48: Possible missing comma found.
Context: ...ng a newly deployed OP Contracts Manger instance which brings these OP Stack chains to o...

(AI_HYDRA_LEO_MISSING_COMMA)

🤖 Prompt for AI Agents 
In pages/notices/upgrade-16.mdx at line 48, correct the typo "OP Contracts
Manger" to "OP Contracts Manager" and add a comma after "instance" to improve
clarity in the sentence.


* The OPCM source code for this release is available at [release op-contracts/v4.0.0-rc.7](https://github.com/ethereum-optimism/optimism/releases/tag/op-contracts%2Fv4.0.0-rc.7)
* This deployment address for this OPCM is [available in the superchain-registry:](https://github.com/ethereum-optimism/superchain-registry/blob/c072b5e4447af38f327cf819c2d1315094166547/validation/standard/standard-versions-mainnet.toml#L22) [0x4fefd0c327d08143be8037c45f8a29fa0d711e50](https://etherscan.io/address/0x4fefd0c327d08143be8037c45f8a29fa0d711e50)

The tentative execution dates of these upgrades tasks can be tracked in our [release board](https://github.com/orgs/ethereum-optimism/projects/117/views/12).

### For permissionless fault proof enabled chains
Expand Down