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Jul 16, 2025
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remove base from u16 #1695

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6 changes: 3 additions & 3 deletions pages/notices/upgrade-16.mdx
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Expand Up @@ -22,7 +22,7 @@ This page outlines important changes related to Upgrade 16 for chain operators a

<Callout type="info">
The Upgrade 16 protocol upgrade on the **Sepolia** Superchain will be executed on **Wed, Jul 09, 2025**, and the **Mainnet** Superchain will be activated on **Thu, Jul 24, 2025**.
The upgrade will be executed on the following chains: `OP`, `Soneium`, `Ink`, `Base`, `Unichain`, `Mode`, `Zora`, `Arena Z`, `Swell`, `World Chain`, and `Metal`.
The upgrade will be executed on the following chains: `OP`, `Soneium`, `Ink`, `Unichain`, `Mode`, `Zora`, `Arena Z`, `Swell`, `World Chain`, and `Metal`.
Execution times may vary depending on the current state of each chain.
</Callout>

Expand All @@ -46,7 +46,7 @@ Chain operators must complete the following 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.

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).
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`, `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).

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).

Expand All @@ -63,7 +63,7 @@ Chains running permissionless fault proofs will need to deploy new dispute game

The absolute prestate is generated with the [op-program/v1.6.1-rc.1](https://github.com/ethereum-optimism/optimism/tree/op-program/v1.6.1-rc.1). You can use this new absolute prestate `0x03eb07101fbdeaf3f04d9fb76526362c1eea2824e4c6e970bdb19675b72e4fc8` for the following chains:

* Mainnet and Sepolia: `OP`, `Soneium`, `Ink`, `Base`, `Unichain`, `Mode`, `Zora`, `Arena Z`, `Swell`, `World Chain`, and `Metal`
* Mainnet and Sepolia: `OP`, `Soneium`, `Ink`, `Unichain`, `Mode`, `Zora`, `Arena Z`, `Swell`, `World Chain`, and `Metal`

You can verify this absolute prestate by running the following [command](https://github.com/ethereum-optimism/optimism/blob/d6fb90dd489e39efa206b55200766ccc075c1d9b/Makefile#L130-L132) in the root of the monorepo on the `op-program/v1.6.1-rc.1` tag:

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