3. Remix에서 ERC20코드 작성

ERC20이라는 프로젝트를 생성한 후 Ballot.sol의 내부 코드를 모두 지운다.

 

Portion.io: PRT Token | Address 0x6D0F5149c502faf215C89ab306ec3E50b15e2892 | Etherscan

오픈 코드를 가져와 다시 Ballot.sol에 입력한다.

/**
 *Submitted for verification at Etherscan.io on 2020-09-18
*/

pragma solidity ^0.5.0;

// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
//
// ----------------------------------------------------------------------------
contract ERC20Interface {
    function totalSupply() public view returns (uint);
    function balanceOf(address tokenOwner) public view returns (uint balance);
    function allowance(address tokenOwner, address spender) public view returns (uint remaining);
    function transfer(address to, uint tokens) public returns (bool success);
    function approve(address spender, uint tokens) public returns (bool success);
    function transferFrom(address from, address to, uint tokens) public returns (bool success);

    event Transfer(address indexed from, address indexed to, uint tokens);
    event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}

// ----------------------------------------------------------------------------
// Safe Math Library 
// ----------------------------------------------------------------------------
contract SafeMath {
    function safeAdd(uint a, uint b) public pure returns (uint c) {
        c = a + b;
        require(c >= a);
    }
    function safeSub(uint a, uint b) public pure returns (uint c) {
        require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0);
        c = a / b;
    }
}


contract PortionToken is ERC20Interface, SafeMath {
    string public name;
    string public symbol;
    uint8 public decimals; 
    
    uint256 public _totalSupply;
    
    mapping(address => uint) balances;
    mapping(address => mapping(address => uint)) allowed;
    
    /**
     * Constructor function
     *
     * Initializes contract with initial supply tokens to the creator of the contract
     */
    constructor() public {
        name = "Portion Token";
        symbol = "PRT";
        decimals = 18;
        _totalSupply = 2500000000000000000000000000;
        
        balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
    }
    
    function totalSupply() public view returns (uint) {
        return _totalSupply  - balances[address(0)];
    }
    
    function balanceOf(address tokenOwner) public view returns (uint balance) {
        return balances[tokenOwner];
    }
    
    function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
        return allowed[tokenOwner][spender];
    }
    
    function approve(address spender, uint tokens) public returns (bool success) {
        allowed[msg.sender][spender] = tokens;
        emit Approval(msg.sender, spender, tokens);
        return true;
    }
    
    function transfer(address to, uint tokens) public returns (bool success) {
        balances[msg.sender] = safeSub(balances[msg.sender], tokens);
        balances[to] = safeAdd(balances[to], tokens);
        emit Transfer(msg.sender, to, tokens);
        return true;
    }
    
    function transferFrom(address from, address to, uint tokens) public returns (bool success) {
        balances[from] = safeSub(balances[from], tokens);
        allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
        balances[to] = safeAdd(balances[to], tokens);
        emit Transfer(from, to, tokens);
        return true;
    }
}

ERC20코드가 잘 붙여졌다.

기본적으로 기능은 다 똑같으므로 일부분만 수정해보자.

contract SMU is ERC20Interface, SafeMath {
    string public name;
    string public symbol;
    uint8 public decimals; 
    
    uint256 public _totalSupply;
    
    mapping(address => uint) balances;
    mapping(address => mapping(address => uint)) allowed;
    
     constructor() public {
        name = "SangMyung Token"; //토큰명
        symbol = "SMU"; //토큰티커
        decimals = 18; //소수점자리
        _totalSupply = 2500000000000000000000000000; //발행개수
        
        balances[msg.sender] = _totalSupply; //본계좌의 잔고는 총 발행개수로
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

contract이름을 자신이 만든 컨트랙으로 바꿔주고 name과 Symbol을 바꿔준다.

---

연결해둔 Ganache 로컬서버에 올려보자.

2. 컴파일

3. 배포

Deploy를 눌러 배포를 완료한다.

pending이 잘된것을 로그로 확인이 가능하다.