# \[CONSTITUTIONAL\] AIP: ArbOS Version 50 Dia

**URL:** <https://forum.arbitrum.foundation/t/constitutional-aip-arbos-version-50-dia/29835>\
**Category:** Finalized AIPs\
**Tags:** proposal\
**Created:** [August 19, 2025, 5:23pm UTC](https://forum.arbitrum.foundation/t/constitutional-aip-arbos-version-50-dia/29835 "2025-08-19T17:23:09Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![krst](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.arbitrum.foundation/krst/32/1357_2.png) [@krst](https://forum.arbitrum.foundation/u/krst)\
**Post date:** [September 4, 2025, 2:55pm UTC](https://forum.arbitrum.foundation/t/constitutional-aip-arbos-version-50-dia/29835/15 "2025-09-04T14:55:50Z")

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The following reflects the views of L2BEAT’s governance team, composed of @krst, @Sinkas, and @Manugotsuka, and it’s based on their combined research, fact-checking, and ideation.

We’re voting FOR the proposal.

As we’ve done with previous technical proposals, we asked L2BEAT’s research team to review the proposed upgrade and ensure that the changes are sensible. Since there were no major issues pointed out by our research team, we’re voting in favor.

One thing that caught our eye while reviewing was that we got a different hash:

```auto
docker run --rm --entrypoint cat nitro-node-dev-v50-alpha1 \\
target/machines/latest/module-root.txt

```

0x8aba3a51bf280d38b4612a329c11f753cc2b2db2d6a5638ca83b07b485c6fbc8

where it should be:

0x28cfd8d81613ce4ebe750e77bfd95d6d95d4f53240488095a11c1ad3a494fa82

> **[Release Consensus V50 Alpha 1 · OffchainLabs/nitro](https://github.com/OffchainLabs/nitro/releases/tag/consensus-v50-alpha.1)**
>
> This release signifies a WASM fraud proof consensus version, and is not a good version to run a node on
> WAVM Module Root: 0x28cfd8d81613ce4ebe750e77bfd95d6d95d4f53240488095a11c1ad3a494fa82
> This is ...

But, given this is a pre-release and not the binding onchain executable, it’s not a blocker to our vote. We do commit to reviewing the calldata of the onchain proposal when the time comes to ensure that it aligns with the described changes.

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