Screenshot 1: Mint QUSDC and bring USDC onto the QIE blockchain.
This screen is divided into two parts.
Step 1: Bringing USDC to the QIE Network(Why the Bridge Is Needed)
Why the Bridge Is Needed
Before a user can mint QUSDC, it’s important to understand a core limitation of blockchains:
USDC issued by Circle does not natively exist on the QIE blockchain.
USDC is originally issued on networks such as Ethereum. Since blockchains cannot directly communicate with one another, assets must be bridged and wrapped before they can be used on a different network.
This is the same reason why:
BTC is used on Ethereum as WBTC
ETH appears on other chains as WETH
Why Wrapped USDC Is Required on QIE
To maintain a 1:1 peg with real USDC, QUSDC must be backed by actual USDC value.
Because Circle has not issued native USDC on QIE, the following process is used:
Users bridge USDC from Ethereum
The bridged asset appears on QIE as WUSDC (Wrapped USDC)
Each WUSDC represents real USDC that is locked on Ethereum
Foundation of QUSDC
This wrapped version of USDC (WUSDC) serves as the underlying collateral backing QUSDC, ensuring:
Trustless cross-chain representation
Part 1: Bridging USDC from Ethereum to QIE
Bridging USDC to QIE
In the first section of the interface, the user sees:
🔹 Bridge USDC to QIE
This step allows users to move USDC from Ethereum to the QIE network.
What Happens During Bridging
When using the bridge, the user:
Selects an amount of USDC on Ethereum
Initiates a non-custodial bridge
Receives WUSDC (Wrapped USDC) on the QIE blockchain
Key Points to Know
The bridge is non-custodial
No third party controls user funds
The process typically takes 2–5 minutes
Real USDC is locked on Ethereum
An equivalent amount of WUSDC is minted on QIE
Result of This Step
After the bridge completes:
✅ USDC value is now available on QIE
❌ QUSDC has not been minted yet
Note: This step is only required if the user does not already hold WUSDC on QIE.
Part 2: Minting (Issuing) QUSDC
Locking WUSDC as Collateral (Minting QUSDC)
Once the user has WUSDC in their QIE wallet, they move to the second section of the interface.
🔹 Lock WUSDC as Collateral
This is the step where QUSDC is issued.
What Happens During Minting
When the user locks WUSDC:
The user deposits (locks) WUSDC into a smart contract
The smart contract verifies the collateral
QUSDC is minted 1:1 and sent directly to the user’s wallet
Details Displayed in the Interface
The screen highlights the following parameters:
Collateral Ratio: 1.00 (100%)
Minting Model: Fully collateralized
Discretionary Minting: None
Third-Party Involvement: None
Trust Model & Guarantees
This entire process is:
Enforced by smart contracts
Trust-minimized by design
No centralized party can alter, override, or bypass these rules.
When Do Users Need Each Step?
Use Part 1 — Bridge — When:
The user does not have USDC or WUSDC on QIE
The user only holds USDC on Ethereum
Use Part 2 — Mint — When:
The user already has WUSDC on QIE
The user wants to mint QUSDC directly
Bridge only once. Mint anytime.
Why This Step Is Critical
This two-step design ensures that:
Every QUSDC is backed by real USDC
The 1:1 peg is cryptographically enforced
QUSDC remains fully decentralized
No centralized issuer can mint unbacked tokens
This is the core reason QUSDC can exist without native Circle-issued USDC on QIE.
Screenshot 2: Understanding Your QUSDC Position
Your Position (On-Chain Summary)
After a user locks WUSDC and mints QUSDC, the interface displays a clear summary called “Your Position.”
This section helps users understand exactly how their QUSDC is backed on-chain.
🔹 Collateral Locked
What it means:
This shows the total amount of WUSDC (Wrapped USDC on QIE) locked inside the decentralized smart contract.
WUSDC represents real USDC value
It is used as collateral to back your QUSDC
The collateral remains locked as long as QUSDC is in circulation
In simple terms:
This is the USDC value securing your QUSDC.
What it means:
This shows the total amount of QUSDC you have issued.
Because QUSDC follows a strict 1:1 backing model:
There is:
No algorithmic adjustment
🔹 Collateral Ratio (1 WUSDC = 1 QUSDC)
What it means:
This confirms that your position is:
This ratio is fixed and:
Cannot be altered by the system
Is unaffected by market conditions
🔹 Liquidation Risk: None
Why there is no liquidation risk:
Unlike lending protocols or over-collateralized stablecoins:
QUSDC does not depend on price feeds
There is no collateral volatility
There is no under-collateralization scenario
Since:
QUSDC = USDC value, locked 1:1
There is:
No risk of forced position closure
Why This Matters for Users
This position model ensures that:
Users always know exactly how their QUSDC is backed
There are no hidden risks or leverage
The system remains simple, predictable, and transparent
QUSDC Is Well-Suited For
Screenshot 3: Burning QUSDC and Off-Ramping Back to USDC
This screenshot explains how users exit QUSDC and convert it back into USDC.
Just like minting, the burn and off-ramp process is fully decentralized and smart-contract driven.
This screen is divided into two parts.
Part 1: Burning QUSDC to Release USDC on QIE
🔹 Burn QUSDC
This section is used when a user wants to:
Burn previously issued QUSDC
Unlock the USDC value backing it
When burning QUSDC, the following steps occur:
The user deposits QUSDC into the smart contract
The smart contract burns the QUSDC
The corresponding USDC value is released to the user
Because QUSDC is backed 1:1:
Result of This Step
After the burn is completed:
QUSDC is permanently removed from circulation
The user now holds USDC on the QIE blockchain
⚠️ Important:
The USDC received on QIE is still WUSDC (Wrapped USDC), which represents real USDC locked on Ethereum.
What Can Users Do After Burning QUSDC?
Once the user receives wrapped USDC on QIE, they can:
Lend or borrow in DeFi protocols
Transfer funds to other QIE users
Use USDC across the QIE ecosystem
At this point, the off-ramp from QUSDC to USDC on QIE is complete.
Part 2: Bridging USDC from QIE Back to Ethereum
🔹 Bridge WUSDC to ETH
This step is optional and only required if the user wants to:
Move USDC off the QIE blockchain
Receive native USDC on Ethereum
When bridging WUSDC back to Ethereum:
The user selects the amount of WUSDC on QIE
Initiates the non-custodial bridge
Real USDC is released on Ethereum
Timing & Trust Model
Typical completion time: 2–5 minutes
Fully smart-contract–driven
When Do Users Need Each Step?
Use Part 1 — Burn QUSDC — When:
You want USDC value on QIE
Use Part 2 — Bridge to Ethereum — When:
You want native USDC on Ethereum
You want to move funds to another ecosystem
In Simple Terms
Burn to exit QUSDC. Bridge only if you want to leave QIE.
Why This Two-Step Exit Matters
This design ensures that:
QUSDC supply always matches reserves
No unbacked tokens remain in circulation
Users retain full control over their funds
The system remains transparent and decentralized
Minting and burning follow the same trust-minimized principles, enforced entirely by smart contracts.
