> For the complete documentation index, see [llms.txt](https://docs.unitindex.org/theunit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.unitindex.org/theunit/unit-etf/contracts.md).

# Contracts

UNIT enables any human to generate TINU, crypto’s first indexed flatcoin backed by crypto collateral, providing both market growth potential and security. Explore how the system works.

## The UNIT Smart Contract Modules System

<figure><picture><source srcset="/files/drz3bHSsHDLWU6dfMiYE" media="(prefers-color-scheme: dark)"><img src="/files/mduOjMgI4ntSnJczrrkG" alt=""></picture><figcaption><p>UNIT System Diagram</p></figcaption></figure>