v12.0.0

📣 Summary

v12.0.0 is the new stable mainnet release of the mezod chain client software.

This is a maintenance release rolling out various improvements and fixes.

⚠️ This release incurs a mandatory upgrade of all Mezo Mainnet nodes that must occur on block 10885900 (ETA Tuesday, August 4th, around 14:00 UTC). Upgrading the node before the mentioned block will cause a failure.

📝 Changelog

• Improve test coverage for geth upgrade by @tomaszslabon in #698
• Bump testnet validators and mainnet RPC to v11.0.0 by @lukasz-zimnoch in #700
• Monitor liquidation-bot balance on Mezo in production by @r-czajkowski in #703
• Bump iavl to v1.2.8 for upstream bugfixes by @lukasz-zimnoch in #702
• Enable go-ethereum metrics collection when --metrics is set by @lukasz-zimnoch in #704
• Monitor earn-bot wallet balance on Mezo and Ethereum by @lukasz-zimnoch in #705
• Monitor earn-bot bridge fee runs by @lukasz-zimnoch in #706
• Fix Grafana crash loop: pin image tag and raise memory limit by @lukasz-zimnoch in #707
• Bump testnet validators and mainnet RPC to v11.0.1 by @lukasz-zimnoch in #709
• Bump mezod chart to 12.1.0 for shutdown grace period by @lukasz-zimnoch in #710
• Adding config setup for Safety Buffer by @dimpar in #654
• Add incident report for July 2026 LevelDB corruption by @lukasz-zimnoch in #711
• Add NEW Pyth price pusher Kubernetes manifests by @dimpar in #713
• Remove equities price feeds from Pyth pusher by @dimpar in #714
• Bound and validate eth_getProof storage keys by @lukasz-zimnoch in #715
• Bump cosmos-sdk from v0.50.10 to v0.50.15 by @lukasz-zimnoch in #716
• Raise JSON-RPC logs filter address cap on testnet nodes by @lukasz-zimnoch in #717
• Align StateDB account existence with go-ethereum by @lukasz-zimnoch in #719
• Make EVM trace query tracers and timeout configurable by @tomaszslabon in #718
• Add v12.0.0 planned upgrade with chain halt by @lukasz-zimnoch in #720

Full Changelog: v11.0.1...v12.0.0

⚙️ Node setup

For guidance around node setup, please refer to the Validator Kit repository.

🔐 Signatures

We're providing two pieces of information for node providers and other interested parties:

• The Docker image sha256sum
• The Linux binary archive sha256 sum

Both hashes are signed by the development team and verifiable on Keybase. Our Keybase usernames are all associated our GitHub usernames.

Docker image

• Image: mezo/mezod:v12.0.0.
• sha256 sum: sha256:4a193d7ede7aa525c28d2e43ccbbfa4c6fc754e7e8781ed01f6a5f2840655a8b

Signatures from the development team (verify these in the Keybase app):

• @lukasz-zimnoch
  BEGIN KEYBASE SALTPACK SIGNED MESSAGE. kXR7VktZdyH7rvq v5weRa0zk90sDpX wIX07Cfy2Yz31Xq 8mliRvTpoVIDeBV VZiP1JZd9Zzoiqn RUAHDbukSaBKp3B AIKe9ocnxXQ2fZb DIpm805q45lS7RD qP6Ddr0cQQ6o9Q8 cSAvWq09EApLo6R GOYdJ6tlAQdcpZX YDoHrrwOJqmxRqy WCu8HzNYCn1XJuS 2HY9VioarwUfMqK 3X36ACeuKry4uD3 RIbMUvyp9WSIGIt 4L2j32Jmu68nls2 I5s63UL33HbY6Ww qY1QKTLHKj4. END KEYBASE SALTPACK SIGNED MESSAGE.

• @tomaszslabon
  BEGIN KEYBASE SALTPACK SIGNED MESSAGE. kXR7VktZdyH7rvq v5weRa0zk7xdHzK Gm9BtmKb2FhcVia 1x14PuUuG7fVaLE jQhGdMxCf7m4Fx1 wmssLe2XMriQTaz EnLE80dTjNexu3P iYL7fGoOeO7iXnI x8koGnusvrLEUXC ILuRYjlwSJN12au GUzstjIeX5rnoa3 270DMjMAJVmvZD5 XlzpcKxFG4KF0WK EZ6oZhJF63wdsBA zqNXeCeuKry4uD3 RIbMUvyp9WSIGIt 4L2j32Jmu68nls2 I5s63UL33HbY6Ww qY1QKTLHKj4. END KEYBASE SALTPACK SIGNED MESSAGE.

Linux binary

• Archive: linux-amd64.tar.gz (see Assets section)
• sha256 sum: 8e145b1df5b411f6a10de53daed038b91f43835fe0d0e397e30fa508ed890957 linux-amd64.tar.gz

Signatures from the development team (verify these in the Keybase app):

• @lukasz-zimnoch
  BEGIN KEYBASE SALTPACK SIGNED MESSAGE. kXR7VktZdyH7rvq v5weRa0zk90sDpX wIX07Cfy2Yz31Xq 8mliRvTpoVIDeBV VZiP1JZd9ZsiuH2 okFUFAXUapjqyhn 4mWnUor4qwrJx5p UD9YH6CwBPB0ObP kXedF1fo5PdBZbM 1Q0VFWAH94AaoSN zdnJbTH2sDLsw4r 4HXiFVJPPRKIw45 YXZFEyTL4FOcKgP 4HqLR7GfCuej6Uq BT9HhCBZUUiLafB TPox7rGdwQYR6fk lvpqccLsMLWVNr6 HjB0fa80aDwIf0g 9CyW21iN8DHDSuK ZhHCx21GLCaxru. END KEYBASE SALTPACK SIGNED MESSAGE.

• @tomaszslabon
  BEGIN KEYBASE SALTPACK SIGNED MESSAGE. kXR7VktZdyH7rvq v5weRa0zk7xdHzK Gm9BtmKb2FhcVia 1x14PuUuG7fVaLE jQhGdMxCf82ejDu RHFbxqhuJ2ygGRw MtKkzoZN0sOuQr1 6VybggFErCSZGrB qfI4HRHynM1PJUo CKPFfZbYHbIcMTI cVC0aUtBPxufqQV LRZJCCmOjiMxR1K Mcgos6HSqeOK7jw DgsMCaQ29Eck1Ff LERaHCBZUUiLafB TPox7rGdwQYR6fk lvpqccLsMLWVNr6 HjB0fa80aDwIf0g 9CyW21iN8DHDSuK ZhHCx21GLCaxru. END KEYBASE SALTPACK SIGNED MESSAGE.