If you hold shares in the bbqBTCN or bbqUSDT0 vaults on Corn, you can withdraw them by calling the vault contract directly on Cornscan. Oku no longer hosts a frontend for these vaults; the on-chain redeem flow is what you use.
You can also check your position on the Earn page of the Corn Chain App to confirm your share balance before you start.
Vault contract addresses
Vault | Returns | Token contract on Cornscan |
bbqBTCN | wBTCN | |
bbqUSDT0 | USD₮0 |
Prerequisites
Your wallet connected to Corn — see Connecting your wallet to Corn.
A small amount of BTCN for gas.
Step 1 — Get your exact share balance
Go to the Read Contract tab for your vault:
Find the
balanceOffunction.Enter your wallet address.
Click Query.
Copy the full number that's returned. That's your share balance in raw units (18 decimals).
Important: copy the exact number — don't type it manually. Off-by-one in the decimals will leave dust behind or revert the transaction.
Step 2 — Open the Write Contract page
Click Connect Wallet and confirm you're on the Corn network.
Step 3 — Call redeem
Find and expand the redeem function. Fill in three fields:
Field | What to enter |
| The exact number you copied from |
| Your wallet address (where the underlying token will be sent). |
| Your wallet address (same as receiver). |
Click Write / Send Transaction and confirm in your wallet.
Step 4 — Bridge the proceeds
After the transaction confirms, your wallet receives:
wBTCN (from bbqBTCN) — unwrap to native BTCN first, then bridge. See wBTCN: unwrap to BTCN first.
USD₮0 (from bbqUSDT0) — bridge directly via the Corn Bridge app. See Bridging via the Corn Bridge app.
Why redeem and not withdraw?
redeem— you specify the shares to burn and receive the corresponding underlying. This is what we use because you know your exact share balance.withdraw— you specify an exact underlying amount to receive. Trickier because the share-to-underlying exchange rate moves with each block (interest accrues). An incorrect amount reverts.
Help
If redeem reverts with "insufficient liquidity," wait a short time and retry — vault liquidity can fluctuate as underlying markets settle. For any other revert, ping us in the Corn Discord with the transaction hash.