What it is
Optimism runs a continuous bug bounty programme on Immunefi, open to any security researcher with no application or invitation needed. It has been live since 14 January 2022 and is listed on Immunefi's index of active programmes.
What it pays
Maximum payout is 2,000,042 USD. Rewards are published per asset type
Blockchain/DLT
- Critical: up to 2,000,042 USD
- High: 15,000 to 50,000 USD
- Medium: 1,000 to 15,000 USD
Smart Contract
- Critical: up to 2,000,042 USD
- High: 15,000 to 50,000 USD
- Medium: 1,000 to 15,000 USD
Websites and Applications
- Critical: 5,000 to 50,000 USD
- High: 5,000 USD flat
KYC is required before a reward is released.
Scope
33 assets are in scope. The programme page carries the full asset list, severity definitions and submission rules, and was last updated on 27 July 2026.