Technical Specifications of TRC-20 Tokens: A Deep Dive into TRON’s Token Standard

Implementing a basic example of a TRC-20 token on the TRON blockchain involves creating a smart contract using Solidity, compiling it to generate the bytecode, and deploying it onto the TRON network. Below is a simplified example to get you started:

Solidity Smart Contract Example

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface TRC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract TRC20Token is TRC20 {
    string public name = "Example TRC20 Token";
    string public symbol = "ETRC";
    uint8 public decimals = 18;
    uint256 private _totalSupply;
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    constructor(uint256 initialSupply) {
        _totalSupply = initialSupply * (10 ** decimals);
        _balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    function totalSupply() external view override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) external view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) external override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) external view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) external override returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
        _transfer(sender, recipient, amount);
        uint256 currentAllowance = _allowances[sender][msg.sender];
        require(currentAllowance >= amount, "TRC20: transfer amount exceeds allowance");
        _approve(sender, msg.sender, currentAllowance - amount);
        return true;
    }

    function _transfer(address sender, address recipient, uint256 amount) internal {
        require(sender != address(0), "TRC20: transfer from the zero address");
        require(recipient != address(0), "TRC20: transfer to the zero address");

        _balances[sender] -= amount;
        _balances[recipient] += amount;
        emit Transfer(sender, recipient, amount);
    }

    function _approve(address owner, address spender, uint256 amount) internal {
        require(owner != address(0), "TRC20: approve from the zero address");
        require(spender != address(0), "TRC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
}