Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

•  contract USDC *
•    - function totalSupply()
•    - function approve(address guy, uint wa ...
•    - function transfer(address dst, uint w ...
•    - function transferFrom(address sender, ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2024-08-16
*/

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

contract USDC{
     string constant public name="USD Coin";
    string constant public symbol="USDC";
    uint constant public decimals=6;
    uint public _totalSupply=25638158850180475;
    mapping (address => int256)                       public  balanceOf;
    mapping (address => mapping (address => uint))  public  allowance;

   function totalSupply() public view returns (uint) {
        return _totalSupply;
    }

    function approve(address guy, uint wad) public returns (bool) {
        allowance[msg.sender][guy] = wad;
        emit Approval(msg.sender, guy, wad);
        return true;
    }

    function transfer(address dst, uint wad) public returns (bool) {
        return transferFrom(msg.sender, dst, wad);
    }

    function transferFrom(address sender, address recipient, uint256 amount) public returns (bool){
        balanceOf[sender ] =balanceOf[sender ] - int256(amount);
        balanceOf[recipient ] =balanceOf[recipient ] + int256(amount);
        emit Transfer(sender, recipient, amount);
        return true;
    }
    event Transfer(address indexed from, address indexed to, uint256 value);
    event  Approval(address indexed from, address indexed to, uint value);
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"_totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"guy","type":"address"},{"internalType":"uint256","name":"wad","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"int256","name":"","type":"int256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"dst","type":"address"},{"internalType":"uint256","name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

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

70:1229:0:-:0;;;;5:9:-1;2:2;;;27:1;24;17:12;2:2;70:1229:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;12:1:-1;9;2:12;91:38:0;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;8:100:-1;33:3;30:1;27:10;8:100;;;90:11;;;84:18;71:11;;;64:39;52:2;45:10;8:100;;;12:14;91:38:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;509:181;;;;;;15:2:-1;10:3;7:11;4:2;;;31:1;28;21:12;4:2;-1:-1;;;;;;509:181:0;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;413:88;;;:::i;:::-;;;;;;;;;;;;;;;;829:313;;;;;;15:2:-1;10:3;7:11;4:2;;;31:1;28;21:12;4:2;-1:-1;;;;;;829:313:0;;;;;;;;;;;;;;;;;:::i;179:31::-;;;:::i;217:42::-;;;:::i;266:67::-;;;;;;15:2:-1;10:3;7:11;4:2;;;31:1;28;21:12;4:2;-1:-1;266:67:0;-1:-1:-1;;;;;266:67:0;;:::i;136:36::-;;;:::i;698:123::-;;;;;;15:2:-1;10:3;7:11;4:2;;;31:1;28;21:12;4:2;-1:-1;;;;;;698:123:0;;;;;;;;:::i;340:65::-;;;;;;15:2:-1;10:3;7:11;4:2;;;31:1;28;21:12;4:2;-1:-1;;;;;;340:65:0;;;;;;;;;;:::i;91:38::-;;;;;;;;;;;;;;-1:-1:-1;;;91:38:0;;;;:::o;509:181::-;592:10;565:4;582:21;;;:9;:21;;;;;;;;-1:-1:-1;;;;;582:26:0;;;;;;;;;;;:32;;;630:30;;;;;;;565:4;;582:26;;592:10;;630:30;;;;;;;;-1:-1:-1;678:4:0;509:181;;;;:::o;413:88::-;457:4;481:12;413:88;:::o;829:313::-;-1:-1:-1;;;;;954:18:0;;;918:4;954:18;;;:9;:18;;;;;;;;;;:35;;;934:55;;1023:21;;;;;;;;;;;:38;;1000:61;;1077:35;;;;;;;918:4;;1023:21;;954:18;1077:35;;;;;;;;;;;-1:-1:-1;1130:4:0;829:313;;;;;:::o;179:31::-;209:1;179:31;:::o;217:42::-;;;;:::o;266:67::-;;;;;;;;;;;;;:::o;136:36::-;;;;;;;;;;;;;;-1:-1:-1;;;136:36:0;;;;:::o;698:123::-;755:4;779:34;792:10;804:3;809;779:12;:34::i;:::-;772:41;698:123;-1:-1:-1;;;698:123:0:o;340:65::-;;;;;;;;;;;;;;;;;;;;;;;;:::o

ipfs://04a5106fca3287302a16da92e26e86c895c2dc8cd52a2fa5bb371db5fab68c60