> For the complete documentation index, see [llms.txt](https://docs.rfy.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rfy.finance/resources/contract-addresses.md).

# Contract Addresses

The following are the current Blackbox deployments. Both vaults use USDT as their deposit token.

| Network          | Chain ID | Vault contract                               | Deposit token                                                          |
| ---------------- | -------: | -------------------------------------------- | ---------------------------------------------------------------------- |
| Ethereum Mainnet |      `1` | `0xb15e63222be05b1128609a5ce6ebb549632687ec` | <p>USDT<br><code>0xdAC17F958D2ee523a2206206994597C13D831ec7</code></p> |
| Arbitrum One     |  `42161` | `0xe2d73dd71757d988971ffa947c887f1201ead28a` | <p>USDT<br><code>0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9</code></p> |

{% columns %}
{% column width="50%" %}

### Ethereum

[Open the Ethereum Blackbox vault](https://rfy.finance/vault/1/0xb15e63222be05b1128609a5ce6ebb549632687ec)
{% endcolumn %}

{% column width="50%" %}

### Arbitrum

[Open the Arbitrum Blackbox vault](https://rfy.finance/vault/42161/0xe2d73dd71757d988971ffa947c887f1201ead28a)
{% endcolumn %}
{% endcolumns %}

{% hint style="warning" %}
Verify the network, vault contract, and deposit-token address before approving USDT or depositing. Do not rely on historical addresses, search results, or unofficial links.
{% endhint %}

### Blackbox architecture

Blackbox uses the same core vault contracts as RFY's other vaults. It does not introduce a separate Blackbox-specific contract system.

For contract implementation details, see [Trader Integration](/resources/trader-integration.md). For audit context, see [Audits](/security/audits.md).


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.rfy.finance/resources/contract-addresses.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.