Think of your Belief Systems uninvested balance like a brokerage cash account. You transfer funds in, use them to invest in one or more series, and transfer proceeds back out when you want. Your uninvested balance is platform-wide — deposited funds can be allocated to any series.
Getting USDC.e on Polygon
If you’re starting from fiat (dollars in a bank account), you’ll need to convert to USDC.e on the Polygon network before you can deposit. There are several paths depending on what tools you’re comfortable with.What is USDC.e?
What is USDC.e?
USDC.e (also written as USDC.e or “bridged USDC”) is the version of USDC that has been bridged from Ethereum to the Polygon network. It is the standard token used by Polymarket and, by extension, by Belief Index for all deposits, positions, and redemptions.USDC.e is distinct from native USDC on Polygon (Circle’s direct issuance). While both are pegged to $1, they are different tokens with different contract addresses. Belief Systems accepts USDC.e only.USDC.e contract address on Polygon:
0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174How to Get USDC.e
The most common path uses a centralized exchange like Coinbase, Kraken, or Binance.Buy USDC on a centralized exchange
Purchase USDC using your bank account, debit card, or wire transfer on any major exchange. Coinbase, Kraken, and Binance all support direct USDC purchases with fiat.
Withdraw USDC to your Polygon wallet
Withdraw your USDC directly to a Polygon-compatible wallet (e.g., MetaMask, Rabby, Coinbase Wallet). Many exchanges now support direct withdrawal to Polygon, which avoids Ethereum gas fees entirely.In your exchange’s withdrawal screen, select Polygon (sometimes labeled “Polygon PoS” or “MATIC”) as the destination network. Enter your wallet address and confirm.
Swap USDC to USDC.e
The USDC you receive from an exchange withdrawal to Polygon is typically native USDC, not USDC.e. You need to swap it.Go to a Polygon DEX such as QuickSwap or Uniswap (on Polygon), connect your wallet, and swap your USDC for USDC.e. The swap is 1:1 with minimal slippage since both are dollar-pegged.
You will need a small amount of POL (Polygon’s native gas token, formerly MATIC) in your wallet to pay for on-chain transactions (swaps, transfers). Gas fees on Polygon are extremely low — typically less than $0.01 per transaction. Most exchanges allow you to withdraw POL directly to Polygon, or you can use a faucet for small amounts.
Depositing to Belief Systems
Once you have USDC.e in your Polygon wallet, depositing to Belief Systems is straightforward.Get your deposit address
Your Belief Systems account has a designated deposit address on the Polygon network. This address is unique to your account and displayed in your dashboard.
Send USDC.e on Polygon
Transfer USDC.e to your deposit address from your Polygon wallet. Only USDC.e on the Polygon network is accepted.
Deposit Properties
| Property | Detail |
|---|---|
| Accepted token | USDC.e on the Polygon network (0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174) |
| Minimum deposit | Dynamic per series during alpha; subject to change |
| Speed | Credited after on-chain confirmation (typically minutes) |
| Network fees | Standard Polygon gas fees apply (typically less than $0.01) |
| Destination | Funds are credited to your platform-wide uninvested balance |
Withdrawals
How to Withdraw
Request withdrawal
Specify the USDC.e amount you wish to withdraw and provide your destination wallet address on the Polygon network.
Processing
Withdrawal requests are reviewed and processed by the operations team. This is not instant — processing may take time depending on operational schedules and security procedures.
Withdrawal Properties
| Property | Detail |
|---|---|
| Token | USDC.e on the Polygon network |
| Processing time | Variable — not instant; may take hours to days |
| Available balance | Only uninvested, unlocked funds can be withdrawn |
| Restrictions | Funds locked in pending orders are not available for withdrawal |
What Cannot Be Withdrawn
- Funds locked in pending mint orders — These are reserved until the order is processed or cancelled
- Shares — Shares must first be redeemed at a NAV window; the resulting USDC.e proceeds can then be withdrawn
- More than your available balance — The system enforces that withdrawal requests do not exceed your uninvested, unlocked balance
Converting USDC.e Back to Fiat
After withdrawing USDC.e to your wallet, you can convert back to fiat by reversing the onramp process:- Swap USDC.e to native USDC on QuickSwap or Uniswap (Polygon) if your exchange requires native USDC
- Send USDC to your exchange (Coinbase, Kraken, etc.) on the Polygon network
- Sell USDC for fiat and withdraw to your bank account
Important Considerations
This is not a bank account
This is not a bank account
Your uninvested balance is held in an operational wallet controlled by Belief Systems. It is not a bank deposit. There is no FDIC insurance, SIPC protection, or any equivalent deposit guarantee. The safety of your funds depends on the operational integrity of the custody infrastructure.
Withdrawal timing is not guaranteed
Withdrawal timing is not guaranteed
Unlike decentralized exchanges where you can withdraw instantly from your own wallet, Belief Systems processes withdrawals through a managed custody model with human approval and mandatory cooldown periods. This adds security but introduces processing time.
Funds in pending orders are locked
Funds in pending orders are locked
If you have an outstanding mint order, those funds are locked until the order is filled, partially filled, or cancelled. You can cancel a pending order to unlock your funds before the next NAV window processes.
USDC.e vs native USDC
USDC.e vs native USDC
Belief Systems only accepts USDC.e (bridged USDC, contract
0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174). Native USDC on Polygon (0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359) is a different token and will not be credited to your account if sent to your deposit address. Always verify the token contract before sending.