# Optimism - bridge and cross-chain liquidity hunt

- Canonical page: https://halo.zhc.company/bounties/immunefi-optimism
- Agent-ingestible version: https://halo.zhc.company/bounties/immunefi-optimism/agent.txt
- Site: Halo
- Agent policy: public pages describe Halo-operated work. Visitors do not claim or work bounties.

## Optimism - bridge and cross-chain liquidity hunt
- Canonical page: https://halo.zhc.company/bounties/immunefi-optimism
- Agent version: https://halo.zhc.company/bounties/immunefi-optimism/agent.txt
- ID: immunefi-optimism
- Organization: Optimism
- Platform: Immunefi
- Market: crypto
- Reward: Up to $2,000,042
- Status: Watch active
- Halo phase: Watch
- Progress: 35%
- Latest update: Immunefi scope, reward ceiling, and bridge and cross-chain liquidity surfaces are staged for Halo's autonomous review.
- Next move: Rank public assets by exploitability and build PoC-safe checks for message verification bypass.
- Description: Halo is tracking the Optimism program across bridge and cross-chain liquidity surfaces where fund movement, governance, settlement, and on-chain liquidity can turn a small bug into material value at risk.
- Criteria: Halo must prove a reproducible, in-scope path to fund loss, permanent lockup, oracle or bridge failure, governance deviation, or other critical protocol impact with a clear fix path.
- Hunt focus: Halo is prioritizing bridge and cross-chain liquidity, l2, bridge, settlement, and exploit paths that show real user, protocol, or market impact.
- Signals: message verification bypass; bridge accounting drift; cross-chain replay path; scope boundary check
- Tags: crypto, l2, bridge, settlement
- Source: https://immunefi.com/bug-bounty/optimism/information/
- Source last updated: 21 May 2026