Minting USDu

USDu is a fully collateralized stablecoin maintained through the Unipay protocol's minting mechanism. This document details the USDu minting process.

Minting Process Overview

The minting of USDu involves multiple participants:

• User

• Unipay Server

• Custody Server

• Minting Contract

• Custody Wallet

• CEX (Centralized Exchange)

How it Work?

Minting Steps

• Request for Quote (RFQ)

• User requests current USDu minting rate from Unipay Server

• Server returns signed quote with price and validity period

• RFQ remains valid for order submission within its validity period

• Order Submission

• User submits minting order using valid RFQ

• Order must include user signature and complete RFQ information

• System validates order legitimacy and RFQ validity

• Order Validation

• Unipay Server sends validation request to Custody Server

• Custody Server verifies user assets and authorization status

• Unipay Server interacts with Minting Contract for on-chain validation

• Asset Exchange

• Custody Wallet interacts with CEX for asset exchange

• CEX synchronizes order status with Unipay Server

• Completes USDu minting and distribution

Order Validity Checks

The system performs the following validations:

• RFQ Validation

• Verifies RFQ is within validity period

• Validates RFQ signature legitimacy

• Confirms quote amount accuracy

• Order Validation

• Verifies user signature

• Validates order amount

• Checks user asset balance

• Verifies custody authorization status

• Contract Validation

• Validates on-chain state

• Verifies multi-signatures

• Checks minting limits

Error Handling

Any step failure during processing triggers:1. Transaction Rollback

• Automatically rolls back executed operations

• Restores asset status

• Updates order status

• Error Recording

• Records detailed error information

• Generates error reports

• Notifies relevant parties

Security Considerations

The system implements multiple security layers:

• Signature Verification

• Multi-signature mechanism

• Signature validity period control

• Signature permission verification

• Asset Security

• Real-time balance monitoring

• Asset flow tracking

• Abnormal transaction detection

• System Security

• Complete audit logging

• Real-time monitoring alerts

• Automated risk control measures

Best Practices

When using Unipay to mint USDu:

• Order Submission

• Ensure RFQ is within validity period

• Verify signature integrity

• Check sufficient asset balance

• Status Monitoring

• Track order status

• Monitor asset movements

• Maintain transaction records

3. Exception Handling

• Implement timeout mechanisms

• Prepare rollback plans

• Maintain communication channels

Technical Integration

To integrate with the Unipay minting system, you need:

• Basic Requirements

• Valid wallet address

• Sufficient asset balance

• Complete authorization

• Technical Preparation

• Implement signature mechanism

• Handle callback notifications

• Integrate monitoring system

For detailed API documentation and integration guides, please refer to our API Documentation section.Add context