> ## Documentation Index
> Fetch the complete documentation index at: https://docs.opersa.company/llms.txt
> Use this file to discover all available pages before exploring further.

# Contracts

> The OperSa contracts deployed on Robinhood Chain testnet.

Everything on OperSa settles through a small set of contracts on Robinhood Chain testnet. They are public, and you can inspect any of them in the explorer.

## Deployed addresses

| Contract          | Address                                      |
| ----------------- | -------------------------------------------- |
| Test USDC (tUSDC) | `0x9de1d21ef148a01b92cf89e2abf198863565f8ae` |
| Exchange          | `0xd3f004c534fabbdccc025d68fd457578c1b502fa` |
| Names             | `0xdad3d50cc4cb1d8a848a977ff3d8a3eb7c8b1976` |

<Note>
  These are testnet deployments. tUSDC is a test token with no monetary value.
</Note>

## What each one does

<CardGroup cols={2}>
  <Card title="Test USDC" icon="coins">
    The trading currency on OperSa. The faucet mints exactly 10,000 tUSDC per wallet, one time only. There is no open mint, so no one can flood the market with balance and manipulate it.
  </Card>

  <Card title="Exchange" icon="arrows-left-right">
    The core contract. It holds positions, settles trades, tracks profit and loss in on-chain units, runs recurring buys on schedule, and records referral attribution.
  </Card>

  <Card title="Names" icon="signature">
    Maps wallets to clean usernames, so your profile and referral links read as a name instead of a raw address.
  </Card>
</CardGroup>

## Design choices worth knowing

<CardGroup cols={2}>
  <Card title="A one-time faucet" icon="shield-halved">
    Capping the faucet at a single 10,000 tUSDC claim per wallet is deliberate. It keeps the playing field level and stops anyone from minting their way to market control.
  </Card>

  <Card title="Exact on-chain profit and loss" icon="calculator">
    Positions and profit and loss are tracked in on-chain units, so your numbers are precise and independently verifiable rather than rounded off in the interface.
  </Card>

  <Card title="On-chain recurring buys" icon="calendar-check">
    Recurring buys are enforced by the contract, not by a background job you have to trust.
  </Card>

  <Card title="On-chain referrals" icon="user-plus">
    Referral attribution lives in the contract, so the credit for bringing in a trader cannot quietly change.
  </Card>
</CardGroup>

<Card title="Explore the chain" icon="link" href="https://explorer.testnet.chain.robinhood.com">
  Open the Robinhood Chain testnet explorer.
</Card>