> For the complete documentation index, see [llms.txt](https://docs.coti.io/coti-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coti.io/coti-documentation/privacy-on-avalanche/networks.md).

# Networks

Privacy on Avalanche spans **two domains**:

1. **Avalanche Fuji C-Chain** — where your dApp contracts, assets (paid in **AVAX**), and the local **Inbox** live.
2. **COTI Testnet** — where private computation runs via the **MPC executor** and the COTI-side **Inbox**.

The pages below list network parameters and deployed contract addresses for the current Fuji ↔ COTI Testnet pairing. Addresses can change after redeploys; treat [`@coti-io/pod-sdk`](https://github.com/coti-io/coti-sdk-pod) / [`@coti-io/coti-contracts`](https://github.com/coti-io/coti-contracts) and your environment config as the live source of truth when building against a specific release.

| Network                                                                           | Chain ID  | Role                                               |
| --------------------------------------------------------------------------------- | --------- | -------------------------------------------------- |
| [Avalanche Fuji](/coti-documentation/privacy-on-avalanche/networks/fuji.md)       | `43113`   | **Host chain** — dApp + Inbox (native token: AVAX) |
| [COTI Testnet](/coti-documentation/privacy-on-avalanche/networks/coti-testnet.md) | `7082400` | **Private execution** — MPC executor + COTI Inbox  |

The shared CREATE3 **Inbox** address is the same on every supported PoD chain:

`0x3b8B70819f27e0438cBcE7f31894f799da52648F`

**Quick links for Fuji builders**

* RPC: `https://api.avax-test.network/ext/bc/C/rpc`
* Explorer: [testnet.snowscan.xyz](https://testnet.snowscan.xyz)
* Solidity preset: `PodUserFuji`
* SDK constant: `FUJI_DEFAULT_INBOX_ADDRESS`

Start here if you need wallet + faucet + Hardhat/Foundry first: [**Getting started on Avalanche Fuji (Day 0)**](/coti-documentation/privacy-on-avalanche/getting-started-fuji.md).

For general COTI chain RPC and faucet details (not PoD-specific), see the top-level [Networks](/coti-documentation/networks.md) section.


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