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

# Deposit Funds

> How to fund your Vela account — ETH and USDC on-chain, or trust-based for other assets

## Overview

Vela supports two deposit modes depending on the asset:

| Asset        | Settlement                           |
| ------------ | ------------------------------------ |
| ETH          | On-chain (VelaSettlement.sol)        |
| USDC         | On-chain (VelaSettlement.sol, ERC20) |
| Other assets | Trust-based (beta)                   |

* **ETH** — fully on-chain via the VelaSettlement smart contract on Ethereum Sepolia. Your funds are locked in the contract, not held by Vela.
* **USDC** — fully on-chain via the VelaSettlement smart contract on Ethereum Sepolia. Requires a two-step approve + deposit flow.
* **Other assets (BTC, SOL, AVAX, etc.)** — trust-based beta deposits. Funds are credited directly to your engine balance.

## Depositing ETH (On-Chain)

1. Go to [vela.monolithsystematic.com/deposit](https://vela.monolithsystematic.com/deposit)
2. Connect your MetaMask wallet
3. Select **ETH** as the asset
4. Enter the amount and click **Deposit**
5. MetaMask will prompt you to confirm a transaction to the VelaSettlement contract
6. Once confirmed, your ETH is locked on-chain and your engine balance is credited

**Contract address:** `0xAa8E680c11a883F9bf6eb980B2D4E9D18DD25686`\
**Network:** Ethereum Sepolia (chainId: 11155111)

You can verify your deposit on [Sepolia Etherscan](https://sepolia.etherscan.io/address/0xAa8E680c11a883F9bf6eb980B2D4E9D18DD25686).

## Depositing USDC (On-Chain)

USDC deposits are settled on-chain via the VelaSettlement contract. This is a two-step process:

1. Go to [vela.monolithsystematic.com/deposit](https://vela.monolithsystematic.com/deposit)
2. Connect your MetaMask wallet
3. Select **USDC** as the asset
4. Enter the amount and click **Deposit**
5. **Step 1 — Approve:** MetaMask will prompt you to approve the VelaSettlement contract to spend your USDC. Confirm this transaction.
6. **Step 2 — Deposit:** MetaMask will prompt you to deposit the USDC into the contract. Confirm this transaction.
7. Once both transactions are mined, your USDC is locked on-chain and your engine balance is credited.

**USDC contract (Sepolia):** `0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238`\
**Get Sepolia USDC:** [faucet.circle.com](https://faucet.circle.com) — Circle's official Sepolia USDC faucet

<Note>
  If you have already approved a sufficient allowance from a previous deposit, the approval step is skipped automatically.
</Note>

## Depositing Other Assets (Trust-Based)

For BTC, SOL, AVAX, MATIC, LINK, UNI, ARB, OP, AAVE, and DOGE:

1. Go to [vela.monolithsystematic.com/deposit](https://vela.monolithsystematic.com/deposit)
2. Connect your wallet
3. Select the asset
4. Enter the amount and click **Deposit**
5. Your balance is credited immediately — no on-chain transaction required

<Warning>
  Trust-based deposits are held by Monolith Systematic LLC during the beta period. Only ETH and USDC are settled on-chain.
</Warning>

## Limits

| Limit               | Value               |
| ------------------- | ------------------- |
| Maximum deposit     | 1,000,000 per asset |
| Minimum deposit     | 0.000001            |
| Deposits per minute | 5 per wallet        |

## Beta Notice

Vela is currently in public beta on Ethereum Sepolia testnet. Do not deposit real mainnet funds.