> For the complete documentation index, see [llms.txt](https://docs.oneclick.fi/oneclick/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.oneclick.fi/oneclick/products/farming-vaults-and-structured-products/yield-farming-vaults-on-optimism/security-and-audits.md).

# Security and Audits

Optimism Yield Index is built on top of [dHedge SDK](https://docs.dhedge.org/dhedge-protocol), which has been audited twice by [Certik](https://www.certik.com/projects/dhedge) (2021) and [iosiro](https://iosiro.com/audits/dhedge-differential-smart-contract-audit) (2020), and has a bug bounty program with [ImmuneFi](<https://immunefi.com/bounty/dhedge >).