PIP-153: Update the Last Observed Nonce on Optimism

Governance
1

Proposal: PIP-153: Update the Last Observed Nonce on Optimism

Status: Proposed

Author(s): @BoweryKing

Type: Other

Discussions-to: https://forum.palomachain.com/c/governance/6

Created: 08/14/2025

Simple Summary

Due to validators failing to attest to Skyway Batches that check for nonce increment on Compass on Optimism, we must reset the nonce via governance. We expect PIP-152 to resolve this issue with duplicate batches on the target chain.

Abstract

Due to validators failing to attest to Skyway Batches that check for nonce increment on Compass on Optimism, we must reset the nonce via governance. This is a proposal to update the lastObservedNonce height to the most recent height observed in the pending transactions to allow pigeons to relay again on Optimism.

Motivation

Updating the lastObservedNonce Data in is required to restart the skyway message relaying on Optimism.

Technical Specification

We identify the lastObservedNonce by checking Compass on Optimism for the last recorded nonce here:

Compass Analyzed: https://docs.palomachain.com/guide/resources/networks.html#mainnet

Optimism Compass Event Logs:

https://optimistic.etherscan.io/address/0xa41886cFA7f2d8cE8Dc15670DDD25eD890822856#events

Chain New Nonce
Optimism 793

Proposal Vote Command for CLI

palomad tx gov submit-proposal ./pip-153.json \\
--gas auto \\
--node=<Your node> \\
--chain-id tumbler \\
--from <Your Paloma Address>

Arbtirum

pip-153.json

{
 "messages": [
  {
   "@type": "/palomachain.paloma.skyway.MsgNonceOverrideProposal",
   "metadata": {
    "creator": "paloma10d07y265gmmuvt4z0w9aw880jnsr700jz87xyk",
    "signers": ["paloma10d07y265gmmuvt4z0w9aw880jnsr700jz87xyk"]
   },
   "chain_reference_id": "Optimism-main",
   "nonce": "793"
  }
 ],
 "metadata": "ipfs://QmQe525acBbVWHZ7JHFN5bXGWvxZjQC1tnjmLFWzb56XzQ",
 "deposit": "1000000000ugrain",
 "title": "PIP-153: Update the last observed nonce on Optimism",
 "summary": "Update last observed nonce on Optimism to restart skyway messages.",
 "expedited": true
}

pip-153_metadata.json

{
 "title": "PIP-153: Update the last observed nonce on Optimism",
 "authors": ["BoweryKing"],
 "summary": "PIP-153: Update the last observed nonce on Optimism.",
 "details": "Update last observed nonce on Optimism to restart skyway messages",
 "proposal_forum_url": "<https://forum.palomachain.com/c/governance/6>",
 "vote_option_context": "Vote YES to update the last observed nonce height"
}

How to Vote on Proposal 216 with CLI

palomad tx gov vote 216 yes \\
--chain-id tumbler \\
--from <Your Paloma Address> \\
--node <Your node> \\
-y

How to Vote on Proposal 216 with Paloma LightNodes

# Mac & Linux
sh ~/Downloads/setup.sh vote-proposal 216 yes

# **Windows**
docker run --rm --pull=always -ti -v $env:USERPROFILE\\\\paloma-lightnode:/root/lightnode palomachain/lightnode-client:v2 vote-proposal 216 yes

Rationale

Due to validators failing to attest to Skyway Batches that check for nonce increment on Compass on Optimism, we must reset the nonce via governance. We expect PIP-153 to resolve this issue with batches being duplicated on the target chain..

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

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