Safe alternative: mock-USDT on testnet

1) Deploy a mock stablecoin (ERC-20) on Sepolia

MockUSDT.sol (uses OpenZeppelin; behaves like a standard token—no spoofing)

solidityCopyEdit// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract MockUSDT is ERC20, Ownable {
    constructor() ERC20("Mock USDT", "mUSDT") Ownable(msg.sender) {
        _mint(msg.sender, 1_000_000 * 10**decimals());
    }
    function mint(address to, uint256 amount) external onlyOwner {
        _mint(to, amount);
    }
}

Hardhat quick steps

1. npm init -y && npm i -D hardhat @nomicfoundation/hardhat-toolbox @openzeppelin/contracts
2. npx hardhat → “Create a JavaScript project”
3. Add a sepolia RPC + private key in hardhat.config.js.
4. Simple deploy script:

jsCopyEdit// scripts/deploy.js
const hre = require("hardhat");
async function main() {
  const MockUSDT = await hre.ethers.getContractFactory("MockUSDT");
  const musdt = await MockUSDT.deploy();
  await musdt.waitForDeployment();
  console.log("MockUSDT deployed to:", await musdt.getAddress());
}
main().catch((e)=>{console.error(e); process.exit(1);});

Run: npx hardhat run scripts/deploy.js --network sepolia

2) Send test transfers (no “flash”, just real testnet transfers)

jsCopyEdit// scripts/send.js
const { ethers } = require("hardhat");

const TOKEN = "0xYourDeployedToken";
const TO    = "0xRecipientAddress";

const abi = [
  "function transfer(address to, uint256 amount) public returns (bool)",
  "function decimals() view returns (uint8)"
];

async function main() {
  const [sender] = await ethers.getSigners();
  const t = new ethers.Contract(TOKEN, abi, sender);
  const decimals = await t.decimals();
  const amount = ethers.parseUnits("1000", decimals); // 1,000 mUSDT
  const tx = await t.transfer(TO, amount);
  console.log("Hash:", tx.hash);
  await tx.wait();
  console.log("Confirmed.");
}
main().catch(console.error);

Run: npx hardhat run scripts/send.js --network sepolia

3) (Optional) Mirror on other chains

• BSC testnet: same contract, change RPC.
• Polygon Amoy / Base Sepolia: same flow.
• Tron (Nile): use TronBox/Truffle with TRC-20 equivalent, again only on testnet.

4) Build a simple demo UI (legit, transparent)

• Frontend shows: connect wallet → enter amount → send mUSDT → display real explorer link.
• Educates users, no spoofing or expiring balances.

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