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Contract

0xD8DEaEdd223a2150612C5C6F33609be89d553d9B
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Transfer131187182021-08-29 6:16:461182 days ago1630217806IN
0xD8DEaEdd...89d553d9B
0 ETH0.0033757464.00000145
Transfer121124812021-03-26 4:37:111338 days ago1616733431IN
0xD8DEaEdd...89d553d9B
0 ETH0.0042122100
Transfer119109902021-02-23 3:54:381369 days ago1614052478IN
0xD8DEaEdd...89d553d9B
0 ETH0.01936435339.00000145
Transfer118460292021-02-13 3:56:181379 days ago1613188578IN
0xD8DEaEdd...89d553d9B
0 ETH0.00359947165.00000145
Transfer116917542021-01-20 10:33:531403 days ago1611138833IN
0xD8DEaEdd...89d553d9B
0 ETH0.003368880
Transfer116427662021-01-12 22:03:001410 days ago1610488980IN
0xD8DEaEdd...89d553d9B
0 ETH0.0019370646.00000145
Transfer116276692021-01-10 14:29:511413 days ago1610288991IN
0xD8DEaEdd...89d553d9B
0 ETH0.0027983949
Transfer116253482021-01-10 6:08:281413 days ago1610258908IN
0xD8DEaEdd...89d553d9B
0 ETH0.0044564578
Transfer116253122021-01-10 6:01:131413 days ago1610258473IN
0xD8DEaEdd...89d553d9B
0 ETH0.0029709652.00000145
Transfer116239292021-01-10 0:53:271413 days ago1610240007IN
0xD8DEaEdd...89d553d9B
0 ETH0.0024837859.00000145
Transfer116040692021-01-06 23:33:541416 days ago1609976034IN
0xD8DEaEdd...89d553d9B
0 ETH0.0022318353.00000145
Transfer115763112021-01-02 17:23:111421 days ago1609608191IN
0xD8DEaEdd...89d553d9B
0 ETH0.0046321110.00000112
Transfer115733162021-01-02 6:18:271421 days ago1609568307IN
0xD8DEaEdd...89d553d9B
0 ETH0.001328431.555
Transfer115484732020-12-29 10:49:001425 days ago1609238940IN
0xD8DEaEdd...89d553d9B
0 ETH0.0034951383
Transfer115481812020-12-29 9:44:581425 days ago1609235098IN
0xD8DEaEdd...89d553d9B
0 ETH0.0049124986
Transfer115462332020-12-29 2:29:191425 days ago1609208959IN
0xD8DEaEdd...89d553d9B
0 ETH0.0026108262.00000145
Transfer115335342020-12-27 3:59:191427 days ago1609041559IN
0xD8DEaEdd...89d553d9B
0 ETH0.0023574856.00000145
Transfer115170542020-12-24 15:13:201430 days ago1608822800IN
0xD8DEaEdd...89d553d9B
0 ETH0.0018102143.00000134
Transfer115093342020-12-23 10:44:481431 days ago1608720288IN
0xD8DEaEdd...89d553d9B
0 ETH0.004211100.00000145
Transfer114868482020-12-20 0:04:471434 days ago1608422687IN
0xD8DEaEdd...89d553d9B
0 ETH0.0012211929
Transfer114798072020-12-18 22:11:331435 days ago1608329493IN
0xD8DEaEdd...89d553d9B
0 ETH0.0016675539.6
Transfer114693032020-12-17 7:35:301437 days ago1608190530IN
0xD8DEaEdd...89d553d9B
0 ETH0.00509531121.00000145
Transfer114485852020-12-14 3:14:411440 days ago1607915681IN
0xD8DEaEdd...89d553d9B
0 ETH0.0012564222.00000145
Transfer114447992020-12-13 12:51:261441 days ago1607863886IN
0xD8DEaEdd...89d553d9B
0 ETH0.0006737616.00000145
Transfer114119822020-12-08 11:51:391446 days ago1607428299IN
0xD8DEaEdd...89d553d9B
0 ETH0.0021903452
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Contract Source Code Verified (Exact Match)

Contract Name:
STD

Compiler Version
v0.5.11+commit.c082d0b4

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion, None license
/**
 *Submitted for verification at Etherscan.io on 2019-11-28
*/

pragma solidity >=0.4.22 <0.6.0;

interface tokenRecipient { 
    function receiveApproval(address _from, uint256 _value, address _token, bytes calldata _extraData) external; 
}

contract STD {
    // Public variables of the token
    string public name;
    string public symbol;
    uint8 public decimals = 18;
    // 18 decimals is the strongly suggested default, avoid changing it
    uint256 public totalSupply;

    // This creates an array with all balances
    mapping (address => uint256) public balanceOf;
    mapping (address => mapping (address => uint256)) public allowance;

    // This generates a public event on the blockchain that will notify clients
    event Transfer(address indexed from, address indexed to, uint256 value);
    
    // This generates a public event on the blockchain that will notify clients
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);

    // This notifies clients about the amount burnt
    event Burn(address indexed from, uint256 value);

    /**
     * Constructor function
     *
     * Initializes contract with initial supply tokens to the creator of the contract
     */
    constructor(
        uint256 initialSupply,
        string memory tokenName,
        string memory tokenSymbol
    ) public {
        totalSupply = initialSupply * 10 ** uint256(decimals);  // Update total supply with the decimal amount
        balanceOf[msg.sender] = totalSupply;                // Give the creator all initial tokens
        name = tokenName;                                   // Set the name for display purposes
        symbol = tokenSymbol;                               // Set the symbol for display purposes
    }

    /**
     * Internal transfer, only can be called by this contract
     */
    function _transfer(address _from, address _to, uint _value) internal {
        // Prevent transfer to 0x0 address. Use burn() instead
        require(_to != address(0x0));
        // Check if the sender has enough
        require(balanceOf[_from] >= _value);
        // Check for overflows
        require(balanceOf[_to] + _value >= balanceOf[_to]);
        // Save this for an assertion in the future
        uint previousBalances = balanceOf[_from] + balanceOf[_to];
        // Subtract from the sender
        balanceOf[_from] -= _value;
        // Add the same to the recipient
        balanceOf[_to] += _value;
        emit Transfer(_from, _to, _value);
        // Asserts are used to use static analysis to find bugs in your code. They should never fail
        assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
    }

    /**
     * Transfer tokens
     *
     * Send `_value` tokens to `_to` from your account
     *
     * @param _to The address of the recipient
     * @param _value the amount to send
     */
    function transfer(address _to, uint256 _value) public returns (bool success) {
        _transfer(msg.sender, _to, _value);
        return true;
    }

    /**
     * Transfer tokens from other address
     *
     * Send `_value` tokens to `_to` on behalf of `_from`
     *
     * @param _from The address of the sender
     * @param _to The address of the recipient
     * @param _value the amount to send
     */
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
        require(_value <= allowance[_from][msg.sender]);     // Check allowance
        allowance[_from][msg.sender] -= _value;
        _transfer(_from, _to, _value);
        return true;
    }

    /**
     * Set allowance for other address
     *
     * Allows `_spender` to spend no more than `_value` tokens on your behalf
     *
     * @param _spender The address authorized to spend
     * @param _value the max amount they can spend
     */
    function approve(address _spender, uint256 _value) public
        returns (bool success) {
        require((_value == 0) || (allowance[msg.sender][_spender] == 0));
        allowance[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
        return true;
    }

    /**
     * Set allowance for other address and notify
     *
     * Allows `_spender` to spend no more than `_value` tokens on your behalf, and then ping the contract about it
     *
     * @param _spender The address authorized to spend
     * @param _value the max amount they can spend
     * @param _extraData some extra information to send to the approved contract
     */
    function approveAndCall(address _spender, uint256 _value, bytes memory _extraData)
        public
        returns (bool success) {
        tokenRecipient spender = tokenRecipient(_spender);
        if (approve(_spender, _value)) {
            spender.receiveApproval(msg.sender, _value, address(this), _extraData);
            return true;
        }
    }

}

Contract Security Audit

Contract ABI

[{"constant":true,"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"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"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"},{"internalType":"bytes","name":"_extraData","type":"bytes"}],"name":"approveAndCall","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"initialSupply","type":"uint256"},{"internalType":"string","name":"tokenName","type":"string"},{"internalType":"string","name":"tokenSymbol","type":"string"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"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"},{"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":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Burn","type":"event"}]

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Deployed Bytecode

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000000000000000000000000000000000000011e1a300000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000007535444636f696e0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000035354440000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : initialSupply (uint256): 300000000
Arg [1] : tokenName (string): STDcoin
Arg [2] : tokenSymbol (string): STD

-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000011e1a300
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000007
Arg [4] : 535444636f696e00000000000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [6] : 5354440000000000000000000000000000000000000000000000000000000000


Deployed Bytecode Sourcemap

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Swarm Source

bzzr://791fc69a07d885d17bb0d38970f61a868af0c5cdfa1a256afae81cac20531b3a

Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Transaction Hash Block Value Eth2 PubKey Valid
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.