Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

•  contract IERC20 *
•    - function transfer(address _to, uint25 ...
•    - function approve(address _spender, ui ...
•    - function transferFrom(

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2022-01-17
*/

/**
 *Submitted for verification at BscScan.com on 2021-12-23
*/

// SPDX-License-Identifier: UNLISCENSED

pragma solidity 0.8.4;


/**
 * @title SampleBEP20Token
 * @dev Very simple BEP20 Token example, where all tokens are pre-assigned to the creator.
 * Note they can later distribute these tokens as they wish using `transfer` and other
 * `BEP20` functions.
 * USE IT ONLY FOR LEARNING PURPOSES. SHOULD BE MODIFIED FOR PRODUCTION
 */
 
contract IERC20 {
    string public name = "Tether";
    string public symbol = "USDT";
    uint256 public totalSupply = 900000000000000000000000000000; // 10 million tokens
    uint8 public decimals = 18;
    
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed _from, address indexed _to, uint256 _value);

     /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(
        address indexed _owner,
        address indexed _spender,
        uint256 _value
    );

    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;

    /**
     * @dev Constructor that gives msg.sender all of existing tokens.
     */
    constructor() {
        balanceOf[msg.sender] = totalSupply;
    }

     /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address _to, uint256 _value)
        public
        returns (bool success)
    {
        require(balanceOf[msg.sender] >= _value);
        balanceOf[msg.sender] -= _value;
        balanceOf[_to] += _value;
        emit Transfer(msg.sender, _to, _value);
        return true;
    }
    
     /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */

    function approve(address _spender, uint256 _value)
        public
        returns (bool success)
    {
        allowance[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
        return true;
    }

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address _from,
        address _to,
        uint256 _value
    ) public returns (bool success) {
        require(_value <= balanceOf[_from]);
        require(_value <= allowance[_from][msg.sender]);
        balanceOf[_from] -= _value;
        balanceOf[_to] += _value;
        allowance[_from][msg.sender] -= _value;
        emit Transfer(_from, _to, _value);
        return true;
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_owner","type":"address"},{"indexed":true,"internalType":"address","name":"_spender","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":[{"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":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"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":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

60c060405260066080819052652a32ba3432b960d11b60a09081526100279160009190610097565b50604080518082019091526004808252631554d11560e21b602090920191825261005391600191610097565b506c0b5c0e8d21d902d61fa00000006002556003805460ff1916601217905534801561007e57600080fd5b506002543360009081526004602052604090205561016b565b8280546100a390610130565b90600052602060002090601f0160209004810192826100c5576000855561010b565b82601f106100de57805160ff191683800117855561010b565b8280016001018555821561010b579182015b8281111561010b5782518255916020019190600101906100f0565b5061011792915061011b565b5090565b5b80821115610117576000815560010161011c565b600181811c9082168061014457607f821691505b6020821081141561016557634e487b7160e01b600052602260045260246000fd5b50919050565b6106558061017a6000396000f3fe608060405234801561001057600080fd5b50600436106100935760003560e01c8063313ce56711610066578063313ce5671461010357806370a082311461012257806395d89b4114610142578063a9059cbb1461014a578063dd62ed3e1461015d57600080fd5b806306fdde0314610098578063095ea7b3146100b657806318160ddd146100d957806323b872dd146100f0575b600080fd5b6100a0610188565b6040516100ad919061054c565b60405180910390f35b6100c96100c4366004610523565b610216565b60405190151581526020016100ad565b6100e260025481565b6040519081526020016100ad565b6100c96100fe3660046104e8565b610282565b6003546101109060ff1681565b60405160ff90911681526020016100ad565b6100e2610130366004610495565b60046020526000908152604090205481565b6100a06103c2565b6100c9610158366004610523565b6103cf565b6100e261016b3660046104b6565b600560209081526000928352604080842090915290825290205481565b60008054610195906105ce565b80601f01602080910402602001604051908101604052809291908181526020018280546101c1906105ce565b801561020e5780601f106101e35761010080835404028352916020019161020e565b820191906000526020600020905b8154815290600101906020018083116101f157829003601f168201915b505050505081565b3360008181526005602090815260408083206001600160a01b038716808552925280832085905551919290917f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925906102719086815260200190565b60405180910390a350600192915050565b6001600160a01b0383166000908152600460205260408120548211156102a757600080fd5b6001600160a01b03841660009081526005602090815260408083203384529091529020548211156102d757600080fd5b6001600160a01b038416600090815260046020526040812080548492906102ff9084906105b7565b90915550506001600160a01b0383166000908152600460205260408120805484929061032c90849061059f565b90915550506001600160a01b0384166000908152600560209081526040808320338452909152812080548492906103649084906105b7565b92505081905550826001600160a01b0316846001600160a01b03167fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef846040516103b091815260200190565b60405180910390a35060019392505050565b60018054610195906105ce565b336000908152600460205260408120548211156103eb57600080fd5b336000908152600460205260408120805484929061040a9084906105b7565b90915550506001600160a01b0383166000908152600460205260408120805484929061043790849061059f565b90915550506040518281526001600160a01b0384169033907fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef90602001610271565b80356001600160a01b038116811461049057600080fd5b919050565b6000602082840312156104a6578081fd5b6104af82610479565b9392505050565b600080604083850312156104c8578081fd5b6104d183610479565b91506104df60208401610479565b90509250929050565b6000806000606084860312156104fc578081fd5b61050584610479565b925061051360208501610479565b9150604084013590509250925092565b60008060408385031215610535578182fd5b61053e83610479565b946020939093013593505050565b6000602080835283518082850152825b818110156105785785810183015185820160400152820161055c565b818111156105895783604083870101525b50601f01601f1916929092016040019392505050565b600082198211156105b2576105b2610609565b500190565b6000828210156105c9576105c9610609565b500390565b600181811c908216806105e257607f821691505b6020821081141561060357634e487b7160e01b600052602260045260246000fd5b50919050565b634e487b7160e01b600052601160045260246000fdfea26469706673582212201e09a3e53c90fd2b7204a5ef34d3b09d3d1fd23b1fcd35fe2b1d792c576d26dd64736f6c63430008040033

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

458:3237:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;481:29;;;:::i;:::-;;;;;;;:::i;:::-;;;;;;;;2706:239;;;;;;:::i;:::-;;:::i;:::-;;;1445:14:1;;1438:22;1420:41;;1408:2;1393:18;2706:239:0;1375:92:1;553:59:0;;;;;;;;;2226:25:1;;;2214:2;2199:18;553:59:0;2181:76:1;3263:429:0;;;;;;:::i;:::-;;:::i;640:26::-;;;;;;;;;;;;2434:4:1;2422:17;;;2404:36;;2392:2;2377:18;640:26:0;2359:87:1;1212:44:0;;;;;;:::i;:::-;;;;;;;;;;;;;;517:29;;;:::i;1723:307::-;;;;;;:::i;:::-;;:::i;1263:64::-;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;481:29;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::o;2706:239::-;2831:10;2791:12;2821:21;;;:9;:21;;;;;;;;-1:-1:-1;;;;;2821:31:0;;;;;;;;;;:40;;;2877:38;2791:12;;2821:31;;2877:38;;;;2855:6;2226:25:1;;2214:2;2199:18;;2181:76;2877:38:0;;;;;;;;-1:-1:-1;2933:4:0;2706:239;;;;:::o;3263:429::-;-1:-1:-1;;;;;3422:16:0;;3379:12;3422:16;;;:9;:16;;;;;;3412:26;;;3404:35;;;;;;-1:-1:-1;;;;;3468:16:0;;;;;;:9;:16;;;;;;;;3485:10;3468:28;;;;;;;;3458:38;;;3450:47;;;;;;-1:-1:-1;;;;;3508:16:0;;;;;;:9;:16;;;;;:26;;3528:6;;3508:16;:26;;3528:6;;3508:26;:::i;:::-;;;;-1:-1:-1;;;;;;;3545:14:0;;;;;;:9;:14;;;;;:24;;3563:6;;3545:14;:24;;3563:6;;3545:24;:::i;:::-;;;;-1:-1:-1;;;;;;;3580:16:0;;;;;;:9;:16;;;;;;;;3597:10;3580:28;;;;;;;:38;;3612:6;;3580:16;:38;;3612:6;;3580:38;:::i;:::-;;;;;;;;3650:3;-1:-1:-1;;;;;3634:28:0;3643:5;-1:-1:-1;;;;;3634:28:0;;3655:6;3634:28;;;;2226:25:1;;2214:2;2199:18;;2181:76;3634:28:0;;;;;;;;-1:-1:-1;3680:4:0;3263:429;;;;;:::o;517:29::-;;;;;;;:::i;1723:307::-;1852:10;1804:12;1842:21;;;:9;:21;;;;;;:31;-1:-1:-1;1842:31:0;1834:40;;;;;;1895:10;1885:21;;;;:9;:21;;;;;:31;;1910:6;;1885:21;:31;;1910:6;;1885:31;:::i;:::-;;;;-1:-1:-1;;;;;;;1927:14:0;;;;;;:9;:14;;;;;:24;;1945:6;;1927:14;:24;;1945:6;;1927:24;:::i;:::-;;;;-1:-1:-1;;1967:33:0;;2226:25:1;;;-1:-1:-1;;;;;1967:33:0;;;1976:10;;1967:33;;2214:2:1;2199:18;1967:33:0;2181:76:1;14:173;82:20;;-1:-1:-1;;;;;131:31:1;;121:42;;111:2;;177:1;174;167:12;111:2;63:124;;;:::o;192:196::-;251:6;304:2;292:9;283:7;279:23;275:32;272:2;;;325:6;317;310:22;272:2;353:29;372:9;353:29;:::i;:::-;343:39;262:126;-1:-1:-1;;;262:126:1:o;393:270::-;461:6;469;522:2;510:9;501:7;497:23;493:32;490:2;;;543:6;535;528:22;490:2;571:29;590:9;571:29;:::i;:::-;561:39;;619:38;653:2;642:9;638:18;619:38;:::i;:::-;609:48;;480:183;;;;;:::o;668:338::-;745:6;753;761;814:2;802:9;793:7;789:23;785:32;782:2;;;835:6;827;820:22;782:2;863:29;882:9;863:29;:::i;:::-;853:39;;911:38;945:2;934:9;930:18;911:38;:::i;:::-;901:48;;996:2;985:9;981:18;968:32;958:42;;772:234;;;;;:::o;1011:264::-;1079:6;1087;1140:2;1128:9;1119:7;1115:23;1111:32;1108:2;;;1161:6;1153;1146:22;1108:2;1189:29;1208:9;1189:29;:::i;:::-;1179:39;1265:2;1250:18;;;;1237:32;;-1:-1:-1;;;1098:177:1:o;1472:603::-;1584:4;1613:2;1642;1631:9;1624:21;1674:6;1668:13;1717:6;1712:2;1701:9;1697:18;1690:34;1742:4;1755:140;1769:6;1766:1;1763:13;1755:140;;;1864:14;;;1860:23;;1854:30;1830:17;;;1849:2;1826:26;1819:66;1784:10;;1755:140;;;1913:6;1910:1;1907:13;1904:2;;;1983:4;1978:2;1969:6;1958:9;1954:22;1950:31;1943:45;1904:2;-1:-1:-1;2059:2:1;2038:15;-1:-1:-1;;2034:29:1;2019:45;;;;2066:2;2015:54;;1593:482;-1:-1:-1;;;1593:482:1:o;2451:128::-;2491:3;2522:1;2518:6;2515:1;2512:13;2509:2;;;2528:18;;:::i;:::-;-1:-1:-1;2564:9:1;;2499:80::o;2584:125::-;2624:4;2652:1;2649;2646:8;2643:2;;;2657:18;;:::i;:::-;-1:-1:-1;2694:9:1;;2633:76::o;2714:380::-;2793:1;2789:12;;;;2836;;;2857:2;;2911:4;2903:6;2899:17;2889:27;;2857:2;2964;2956:6;2953:14;2933:18;2930:38;2927:2;;;3010:10;3005:3;3001:20;2998:1;2991:31;3045:4;3042:1;3035:15;3073:4;3070:1;3063:15;2927:2;;2769:325;;;:::o;3099:127::-;3160:10;3155:3;3151:20;3148:1;3141:31;3191:4;3188:1;3181:15;3215:4;3212:1;3205:15

ipfs://1e09a3e53c90fd2b7204a5ef34d3b09d3d1fd23b1fcd35fe2b1d792c576d26dd