sedhu-orbitx

// SPDX-License-Identifier: MIT
// Compatible with OpenZeppelin Contracts ^5.5.0
pragma solidity ^0.8.27;

import {AccessControlUpgradeable} from "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
import {Initializable} from "@openzeppelin/contracts/proxy/utils/Initializable.sol";
import {PausableUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/PausableUpgradeable.sol";
import {UUPSUpgradeable} from "@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.sol";

contract TransactionRegistry is Initializable, PausableUpgradeable, AccessControlUpgradeable, UUPSUpgradeable {

sedhu-orbitx

import { Options } from "@layerzerolabs/lz-v2-utilities";
import { ethers, parseUnits, zeroPadValue } from "ethers";
import { TronWeb } from "tronweb";
import {
  MessagingFee,
  OFT_ABI,
  SendParam
} from "./abis";
import {

sedhu-orbitx

import { Options } from "@layerzerolabs/lz-v2-utilities";
import { ethers, MaxUint256, parseEther, parseUnits, zeroPadValue } from "ethers";
import { LAYERZERO_EIDS, USDT0_CONTRACTS } from "./constants";

const MAX_UINT256 = MaxUint256;

// Helper function to calculate minimum amount with slippage
function calculateMinAmount(amountLD: bigint, slippageBps: number): bigint {

sedhu-orbitx

/**
 * USDT0 Contract Addresses and Configuration
 * Based on official USDT0 documentation: https://docs.usdt0.to/technical-documentation/developer
 */

// LayerZero Endpoint IDs (EID)
export const LAYERZERO_EIDS = {
  ETHEREUM: 30101,
  ARBITRUM: 30110,
  POLYGON: 30109,

sedhu-orbitx

/**
 * Composed MultiHop Transfer Implementation following tron-exmaple.ts pattern
 * Handles single-transaction multi-hop transfers: Tron → Arbitrum → Polygon
 * Uses composed message pattern for seamless multi-hop transfers
 * Uses TronWeb for Tron operations and ethers.js for EVM chains
 *
 * Based on LayerZero UI Bridge SDK pattern and USDT0 documentation
 */