📢 Announcement: Sepolia l2geth node Upgrade

Scroll is conducting Euclid Upgrade on Sepolia for lower gas fee, throughput, zkvm, and more. This upgrade is big so will be conducted in two phases.

Details:
- Phase-1: Tuesday, Mar 11 2025, 08:00 UTC
- Phase-2: Thursday, Mar 13 2025, 08:00 UTC
- Duration: Approximately 2 hours

Suggested actions for partners:
- If you are hosting a node, please follow the node migration guide to spin off a new node.
- Understand the impact from the partner notes.

Scroll Sepolia Euclid Phase-1 Upgrade

The upgrade will happen at timestamp 1741680000 (Tue Mar 11 2025 08:00:00 GMT+0000), around 30 minutes from now.

See the node release notes for more details. https://github.com/scroll-tech/go-ethereum/releases/tag/scroll-v5.8.23

Scroll Sepolia Euclid Phase-1 Upgrade has been completed and verified.

Scroll Sepolia Euclid Phase-2 Upgrade

The upgrade will happen at timestamp 1741852800 (Thu Mar 13 2025 08:00:00 GMT+0000), around 30 minutes from now.

See the node release notes for more details. https://github.com/scroll-tech/go-ethereum/releases/tag/scroll-v5.8.23

A hotfix release for Scroll Sepolia nodes has been published. This release fixes the "batch hash mismatch" error: https://github.com/scroll-tech/go-ethereum/releases/tag/scroll-v5.8.25

Scroll Sepolia Euclid Phase-2 Upgrade has been completed and verified.

During the upgrade, we had to publish a new l2geth release to adopt a recent bugfix in the DA decoder module. Apart from this, the upgrade happened with no other issues.

Dapps/indexers should test their system's compatibility with Euclid on Scroll Sepolia. For questions and assistance, please reach out on Discord. https://discord.com/channels/853955156100907018/1280768286124146732

📢 Announcement: Euclid Upgrade on Mainnet

Scroll is conducting Euclid Upgrade on Mainnet for lower gas fee, throughput, zkvm, and more. This upgrade is big so will be conducted in two phases.

Details:
- Phase-1: Wednesday, Apr 16 2025, 15:00 UTC
- Phase-2: Tuesday, Apr 22 2025, 07:00 UTC
- Duration: Approximate 4 hours
- Note: finalization will be delayed at most 24 hours during phase-1 upgrade.

Suggested actions for partners:
- If you are hosting a node, please follow the node migration guide to spin off a new node.
- Understand the impact from the partner notes.

Scroll Mainnet Euclid Phase-1 Upgrade

The upgrade will happen at timestamp 1744815600 (Wed April 16th 2025 15:00:00 GMT+0000), around 8 hours from now.

The node will be on v5.8.38 after the upgrade.

The Security Council has verified and finalized the MPT transition. This concludes phase-1 of the Euclid upgrade. Batch finalization and withdrawal processing will resume now.

Scroll Mainnet Euclid Phase-2 Upgrade

The upgrade will happen at timestamp 1745305200 (Tue Apr 22 2025 07:00:00 GMT+0000), in around 1 hour from now. The recommended node version remains v5.8.38 (same as phase-1).

The first Euclid Phase-2 bundle has been proven and finalized on Ethereum. This concludes the Euclid upgrade.

Scroll Mainnet Security Upgrade

Scroll has completed an upgrade to address security issues identified in the Euclid release. The upgrade was executed via transaction 0x783703d4e94de48edb75261149a540cbf7abb7ef077865c11080e622a508ab86 on April 25, 2025, at 07:06:59 AM UTC. The recommended node version remains v5.8.38.
This upgrade was approved by the Security Council through this multisig transaction.