# Overlayer > Overlayer is a non-custodial protocol that turns stablecoins into overlaid assets: the same stable exposure, with opt-in on-chain yield. Overlayer doesn't change what stablecoins are — it changes how stable capital behaves. Overlaid assets (T+, C+, G+, GH+) are minted 1:1 against their underlying stablecoin (USDT, USDC, USDG, GHO). Base overlaid assets are non-rebasing and remain usable across DeFi; yield exposure activates only through staking and depends on realized on-chain returns. Mint and redeem are instant and fully on-chain, with no off-chain execution and no leverage. ## Docs - [Documentation](https://docs.overlayer.fi/): protocol mechanics, contracts, and integration guides. - [Whitepaper](https://docs.overlayer.fi/wp.pdf): full protocol design and economic model. - [FAQ](https://docs.overlayer.fi/resources/faq): common questions about overlaid assets, yield, and redemption. ## Security - [Audits](https://docs.overlayer.fi/resources/audits): index of completed smart contract audits. - [Beosin audit](https://beosin.com/audits/Overlayer_202510201605.pdf): smart contract audit report. - [Hacken audit](https://hacken.io/audits/overlayer/sca-overlayer-wrap-feb2026/): smart contract audit report. - [HackenProof program](https://hackenproof.com/audit-programs/overlayer-sc-dualdefense-audit): ongoing bug bounty program. - [Risks and mitigations](https://docs.overlayer.fi/security/risks_and_mitigations): known risk surface and how it is addressed. ## App - [Overlayer App](https://app.overlayer.fi): mint, redeem, and stake overlaid assets on mainnet. - [Earn](https://docs.overlayer.fi/campaigns/phase_0): current rewards campaign. ## Optional - [Blog](https://blog.overlayer.fi/): protocol updates and research notes. - [GitHub](https://github.com/Overlayerfi): open-source repositories. - [Media kit](https://docs.overlayer.fi/resources/media-kit): logos and brand assets. - [Regulatory overview](https://docs.overlayer.fi/legal/regulatory_overview): regulatory positioning. - [Terms of use](https://docs.overlayer.fi/legal/terms_of_use) - [Privacy policy](https://docs.overlayer.fi/legal/privacy_policy)