PIP-135: Paloma Mainnet Upgrade to v2.4.11 to fix WASM event swallowing

Governance
1

Proposal: PIP-135: Paloma Mainnet Upgrade to v2.4.11 to fix WASM event swallowing

Status: Proposed

Author(s): @birdlady

Type: Software Upgrade

Discussions-to: Governance - Paloma

Created: 04/07/2025

Simple Summary

The Paloma protocol had a bug that would explicitly swallow events from downstream WASM contract calls.

Abstract

The Paloma protocol had a bug that would explicitly swallow events from downstream WASM contract calls. This had the effect that the Paloma chain data provider was not able to ingest all events required for chart data for Paloma’ Got Talent.

Additionally, there was a fix for the error logs in the skyway module.

Motivation

This upgrade is required for Paloma to emit all events from WASM contract calls.

Specification Overview

The specification for this release includes

Technical Specification

Paloma

Paloma v2.4.11 upgrades include the following:
Release PR https://github.com/palomachain/paloma/releases/tag/v2.4.11

Prior to upgrade

  1. An upgrade proposal that must be submitted by anyone running a node on the network. This proposal should have the correct block height.
  2. Please use the following tool to calculate the approximate Block Height: Huginn - PalomaChain Release Window Planner
  3. This upgrade proposal is an expedited proposal and requires 1000 GRAIN or 1000000000ugrain for deposit for voting.
  4. IMPORTANT: The upgrade height is the block height where the chain halts and requires the upgrade. Allow at least one (1) day AFTER voting end time and upgrade-height for 2/3 of the network to have downloaded the new binary and prepped for the switch over to avoid/minimize downtime of the Paloma chain.
  5. The Target block height for chain halt for this proposal is 35211526 ****or approximately 04/7/2025 17:00 UTC See (Block height: 35211526)

Proposal Vote Command for CLI

palomad tx gov submit-proposal ./pip-135.json \
--gas auto \
--node=https://rpc-1.paloma.nodes.guru/ \
--chain-id tumbler \
--from <Your Paloma Address>

pip-135.json

{
    "messages": [
     {
      "@type": "/cosmos.upgrade.v1beta1.MsgSoftwareUpgrade",
      "authority": "paloma10d07y265gmmuvt4z0w9aw880jnsr700jz87xyk",
      "plan": {
       "name": "v2.4.11",
       "height": "35211526",
       "info": "",
       "upgraded_client_state": null
      }
     }
    ],
    "metadata": "ipfs://QmanJxj8fk12mPmxsyz7A6xA6bNeKXWDaWQ2gBwLBqxuk6",
    "deposit": "1000000000ugrain",
    "title": "PIP-135:  Paloma  Mainnet Upgrade to v2.4.11 to fix WASM event swallowing",
    "summary": "This Paloma v2.4.11 release includes a fix for WASM event swallowing", 
    "expedited": true
}

pip-135_metadata.json

{
 "title": "Paloma  Mainnet Upgrade to Paloma v2.4.11 to fix WASM event swallowing",
 "authors": [
  "Birdlady"
 ],
 "summary": "PIP-135:  Paloma  Mainnet Upgrade to v2.4.11 to fix WASM event swallowing"
 "details": "\"'{\\\"binaries\\\":{\\\"linux/amd64\\\":\\\"https://github.com/palomachain/paloma/releases/download/v2.4.11/paloma_Linux_x86_64.tar.gz\\\"}}'\"",
 "proposal_forum_url": "",
 "vote_option_context": "Vote YES to support running this binary to upgrade the Paloma Mainnest Network"
}

How to Vote on Proposal 196 with CLI

palomad tx gov vote 196 yes \
--chain-id tumbler \
--from <Your Paloma Address> \
--node <Your node> \
-y

How to Vote on Proposal 196 with Paloma LightNodes

# Mac & Linux
sh ~/Downloads/setup.sh vote-proposal 196 yes

# **Windows**
docker run --rm --pull=always -ti -v $env:USERPROFILE\\paloma-lightnode:/root/lightnode palomachain/lightnode-client:v2 vote-proposal 196 yes

How to check if 2/3 of the network is online after the vote is complete

curl -s localhost:26657/consensus_state | jq -r ".result.round_state.height_vote_set[0].prevotes_bit_array"

—> needs to return ≥ ~0.67 for the chain to start up again

To see which validators are online with the new binary, use GitHub - blockpane/pvtop: top-like tui for watching validator pre-votes on Tendermint chains

Rationale

Paloma now allows for governance vote to fix reference hashes for chain forks and upgrades from target chains that are unexpected. This will make Paloma more robust for handling multiple target chain changes during emergency forks.

About Paloma

Paloma wants to be the fastest relay chain in the world with the most decentralized network of validators that can attest to any transaction with the fastest possible execution. Paloma aims to make it easy for developers to control smart contracts on any Solana, Ethereum L1, L2, and L3 chain.

To learn more about Paloma, please visit https://palomachain.com

To follow the project on Github, please star the project GitHub - palomachain/paloma: The fast blockchain messenger protocol

To participate in the community, please join the Paloma Discord: Paloma