ZeUSD Token

Overview

ZeUSD is an upgradeable ERC-20 token that serves as the core stable asset of the ZeUSD protocol. It incorporates advanced features like blacklisting, role-based access control, and cross-chain compatibility through Layer Zero.

Key Features

1. Token Configuration

• Name: ZeUSD

• Symbol: ZeUSD

• Decimals: 6

• Implementation: ERC-20 Upgradeable

2. Access Control System

• DEFAULT_ADMIN_ROLE (Owner): Controls administrative functions

• ADMIN_ROLE (Admin): Manages operational features.

• Router: Exclusive minting privileges

3. Security Features

Blacklist System

• Prevents malicious actors from using the token

• Administrators can add/remove addresses

• Affects transfers and approvals

mapping(address => bool) private _blacklist;

function setBlacklistStatus(address account, bool status) external onlyRole(ADMIN_ROLE) {
    _blacklist[account] = status;
    emit Blacklisted(account, status);
}

Router Control

• Only authorized router can mint/burn tokens

• Prevents unauthorized token creation

• Ensures protocol integrity

modifier onlyRouter() {
    require(msg.sender == router, "Only router can call");
    _;
}

Core Functions

Minting

function mint(address to, uint256 amount) external onlyRouter {
    _mint(to, amount);
}

• Called exclusively by router

• Creates new tokens based on collateral

• Emits Transfer event

Burning

function burn(uint256 amount) external onlyRouter {
    _burn(msg.sender, amount);
}

function burnFrom(address account, uint256 amount) external onlyRouter {
    _spendAllowance(account, msg.sender, amount);
    _burn(account, amount);
}

• Destroys tokens when collateral is redeemed

• Requires approval for burnFrom

• Updates total supply