> ## Documentation Index
> Fetch the complete documentation index at: https://v3.docs.derive.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Contracts

> On-chain contract addresses for the Derive v3 testnet (Sepolia) deployment.

The on-chain contracts for the Derive v3 **testnet** deployment on **Ethereum
Sepolia**. These are the settlement and custody contracts your own wallet
interacts with for deposits, withdrawals, and the L1 escape hatch.

**Chain ID:** `11155111`

<Note>
  For the **signing** constants — `ACTION_TYPEHASH`, the EIP-712 domain, and the
  per-action module addresses — see [Action
  signing](/authentication/action-signing).
</Note>

## `ACTION_MANAGER`

```text theme={null}
0x1b4f369b585D40a27F66775844FC265151f278A4
```

The L1 action inbox. Your own wallet calls this settlement contract to submit
on-chain actions — most importantly **direct (self-custody) deposits**, which
create your account and its first subaccount. See [Depositing](/getting-started/depositing).

## `VAPP`

```text theme={null}
0x806A2f83d5E01a5526629c1A5FB4A4AAc60bc393
```

The zk-vApp settlement contract. It anchors the protocol's on-chain state root
and verifies the validity (zero-knowledge) proofs that settle every state
transition — the root of custody and settlement for the deployment.

## `WITHDRAWAL_OUTBOX`

```text theme={null}
0x55B1A897E2ecbb4489218E961C64f3E6b1F0f988
```

The L1 withdrawal outbox. Finalized withdrawals — and the **escape-hatch** exit
if the operator goes offline — are claimed here; payouts are pulled from the spot
vault through this contract.

## `SPOT_VAULT`

```text theme={null}
0xB20790d63f648feA1A23948CDF1B8769DF78a173
```

The ERC-20 escrow vault. It custodies the actual spot tokens backing on-protocol
balances: deposits land here, and withdrawals are paid out from it
(`SpotVault.withdraw` → `IERC20.transfer`).

<Info>
  Mainnet contract addresses are not published in this repository — read them
  from the mainnet deployment.
</Info>


## Related topics

- [Programmatic Onboarding](/getting-started/depositing.md)
- [Action Signing](/authentication/action-signing.md)
- [DevEx improvements](/migrating/v3-improvements.md)