> For the complete documentation index, see [llms.txt](https://roi-laboratories.gitbook.io/roilabs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://roi-laboratories.gitbook.io/roilabs/technology/technology-and-infrastructure/infrastructure-layers.md).

# Infrastructure Layers

**Blockchain Layer**

* ROI Labs runs natively on Ethereum and EVM-compatible chains.
* Cross-chain support planned via bridging (e.g., rETH minted on Polygon, backed by ETH locked on Ethereum).

#### **Security Layer**

* **Multi-Signature Unlocks**: Optional DAO or guardian signatures for high-value accounts.
* **Passcode/Key Binding**: Users set a lightweight **onchain passcode** or verification mechanism to unlock assets.
* **Session Locks**: Temporary locks that auto-reinforce if no unlock is executed.

#### **Utility Layer**

* Provides DeFi-facing functions such as staking, borrowing, and liquidity pooling using rTokens.
* Enables wallets to offer **yield + safety** in one package.

#### **Governance Layer**

* Powered by $ROI token.
* DAO manages parameters like fees, staking yields, supported assets, and cross-chain expansions.