If you already have ECC USDC in your balance, you can instantly buy SHELL directly in the Acki Nacki Wallet mobile app.
Acki Nacki Wallet app installed
ECC USDC in your balance (minimum 1 USDC)
On the main wallet screen, where your balances are displayed, tap the Exchange button button and select Buy and Sell SHELL
In the exchange screen, make sure the Buy mode is selected.
In the Select amount field, enter the amount of USDC (ecc) you want to spend on SHELL. The system will instantly show how much SHELL you'll receive.
Input rules:
Whole numbers only (1, 5, 100, etc.)
Minimum amount — 1 USDC
Cannot exceed your ECC USDC balance
Your current USDC balance is displayed at the bottom of the screen.
Example: you enter 50 USDC — the system shows you'll receive 5,000 SHELL.
After entering the amount, tap the Buy SHELL button at the bottom of the screen
A confirmation screen appears with the details:
Tap Confirm to proceed or Cancel to go back
The transaction is being processed on the blockchain.
On success, you'll see the confirmation:
Tap Close to return to the main screen. Your SHELL balance will update automatically.
When you buy SHELL, the system follows this algorithm:
Your USDC is sent to the Accumulator smart contract
The contract checks if there is SHELL available in seller queues
If sellers exist — their SHELL is transferred to you, and USDC is reserved for seller payouts
If there aren't enough sellers — the missing SHELL is created (minted) by the system
All SHELL is sent to you in a single transaction
As a buyer, it doesn't matter where the SHELL came from — you always receive exactly amount × 100 SHELL.
Buy SHELL button inactive
Amount field is empty or zero
Enter an amount greater than 0
Enter a whole number
A decimal number was entered
Insufficient USDC ecc balance
Not enough USDC ecc
Reduce the amount or top up your balance
Transaction failed. Try again
Transaction error
Try again after a few seconds
Last updated 1 month ago
