Log in to the xReserve UI

Open the onboarding flow

After login, the user lands on an empty state page and can start onboarding by clicking the yellow Onboard button.

Choose whether to enable pre-approval

The confirmation popup includes a checkbox to enable Pre-approval for the Party ID. Pre-approval authorizes the xReserve system to mint all incoming deposits for the user’s Party ID automatically. This choice is not permanent and can be changed in the future.

• Pre-approval enabled
• Pre-approval disabled

All future deposits for this Party ID are minted automatically, based on the delegated authority given to xReserve.

The user must manually click Mint for each new deposit attestation before USDC is created on the Canton Network.

Submit the request and wait for approval

After the user clicks Confirm Onboard, a success popup appears in the lower-left corner.

The application operator typically approves the request within about one minute. Once approved, the landing page shows balances and transactions for the onboarded Party ID.

Open the Settings page

Click the profile icon in the top-right corner and select Settings. The first option is Remove account (offboard).

Confirm offboarding

Click the red Offboard button, then confirm the action in the popup.

After confirmation, the Party ID is offboarded and can no longer use xReserve until it is onboarded again.

Select the target environment

By default, the UI opens in Mainnet. To switch to Testnet, use the settings gear in the top-right corner.

Connect a wallet

Enter deposit details

Provide the following information:

• Amount (USDC): the amount to send to Circle’s xReserve contract.
• Canton recipient Party ID: the Party ID that will receive the minted USDC on the Canton Network.

The Party ID entered here should match the Party ID that was onboarded.

Review and confirm the deposit

Click Deposit, review the confirmation popup carefully, and approve the transactions in the connected wallet.

Two wallet transactions must be approved after confirming the popup.

Wait for L1 finality

Wait for the deposit attestation to appear

Process the attestation

What happens next depends on whether pre-approval is enabled for the Party ID.

• Pre-approval enabled
• Pre-approval disabled

The deposit attestation is actioned automatically and the USDC is minted without manual user interaction.

The user must manually click Mint to mint the pending deposits as USDC on the Canton Network.

Clicking Mint processes all pending deposit attestations in one action.

Verify updated holdings

Once minting completes, the user’s holdings update on the xReserve UI.

View the holding in the DA Registry UI

The new USDC holding amount is also visible in the DA Registry UI under Registry -> Holdings.

Start the withdrawal request

On the landing page, click Withdraw next to the user’s USDC holdings.

Populate the withdrawal form

The first popup asks for the destination network, recipient address, and amount.

• Network: the destination L1 network.
• Recipient: the recipient address on the destination network.
• Amount: the USDC amount to withdraw.
• Fee checkbox: whether Circle’s flat withdrawal fee is included in the entered amount or added on top.

The amount supports up to 6 decimal places and cannot exceed the user’s available USDC holding.

Review the withdrawal details

Click Review to open the confirmation popup and validate the withdrawal before submission.

Confirm the withdrawal

Click Confirm Withdraw. The specified amount is burned on the Canton Network and the user sees a success banner.

Track processing status

While the request is being processed, it appears in the xReserve transaction history.

Turn pre-approval on or off from the landing page

Use the pre-approval toggle on the landing page.

Confirm the change

A confirmation popup appears. After confirmation, a success banner is shown.

Verify the updated state

The landing page reflects the new pre-approval setting after the update is applied.