The Native Settlement Layer for AI Economy

UUSD is a decentralized stablecoin designed as the foundational settlement infrastructure for the emerging AI economy. It enables both humans and AI agents to participate equally in economic activities through a permissionless, peer-to-peer payment system.

• ERC-20 Compatible - Standard token interface with 18 decimals
• Upgradeable - Transparent proxy pattern for future improvements
• Multi-Role Access Control
  • Owner: Full control, unlimited mint/burn
  • Admin: Freeze/unfreeze accounts, pause/unpause
  • Minter: Mint with allowance limits
• EIP-2612 Permit - Gasless approvals via signatures
• EIP-3009 - Transfer and receive with authorization
• Batch Transfers - Up to 200 transfers in one transaction
• Freeze & Pause - Security controls for compliance
• Multi-Chain - Same address across all EVM chains

Deployed using CREATE2 for deterministic addresses across all EVM-compatible chains:

• BSC Testnet
• BSC Mainnet
• Ethereum
• Base

• Foundry
• Node.js >= 18

git clone https://github.com/uusdai/uusd.git
cd uusd
forge install

forge build

forge test

All 40 tests should pass:

[PASS] test_Name()
[PASS] test_Symbol()
[PASS] test_Decimals()
[PASS] test_OwnerMint()
[PASS] test_OwnerBurn()
[PASS] test_TransferWithAuthorization()
... (40 tests total)

1. Configure .env:

PRIVATE_KEY=0x...
BSC_RPC_URL=https://bsc-dataseed.binance.org/
BSCSCAN_API_KEY=...
DEPLOY_SALT=0x00000000000000000000000000000000000000000000000000000000000be4b0

2. Deploy with CREATE2 (vanity address):

source .env
forge script script/DeployWithFactory.s.sol:DeployWithFactory \
  --rpc-url $BSC_RPC_URL \
  --broadcast \
  --verify

• Whitepaper (PDF)
• Genesis Document (BitcoinTalk)

• Two-step ownership transfer (Ownable2Step)
• Frozen accounts cannot send, receive, or spend allowances
• Pause halts all transfers, mints, and burns
• Storage gap reserved for upgrade safety

┌─────────────────────────────────────────────────┐
│           TransparentUpgradeableProxy           │
│         0x61a10...a10000 (UUSD Token)           │
├─────────────────────────────────────────────────┤
│                                                 │
│  ┌───────────────┐      ┌──────────────────┐   │
│  │  ProxyAdmin   │      │  Implementation  │   │
│  │  0x2D49CB...  │─────▶│  0xA4f44c...     │   │
│  └───────────────┘      └──────────────────┘   │
│         │                        │              │
│         ▼                        ▼              │
│   Owner Control           UUSD Logic            │
│   (Upgrades)         (ERC20 + Extensions)       │
│                                                 │
└─────────────────────────────────────────────────┘

MIT License - see LICENSE

• Website: https://uusd.ai
• Whitepaper: PDF | BitcoinTalk
• Twitter: @UUSDai
• Telegram: UUSD_ai