ERC-20
Overview
Max Total Supply
50,000,000 ECOEC
Holders
7,748
Total Transfers
-
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
EcoEarthCoin
Compiler Version
v0.4.25+commit.59dbf8f1
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2018-09-20 */ pragma solidity 0.4.25; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { // Gas optimization: this is cheaper than asserting 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; } /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * https://github.com/ethereum/EIPs/issues/20 * Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is ERC20 { using SafeMath for uint256; mapping (address => mapping (address => uint256)) internal allowed; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev Total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev Transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * 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 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { require((_value == 0) || (allowed[msg.sender][_spender] == 0)); allowed[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 in 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 _extraData) public returns (bool success) { tokenRecipient spender = tokenRecipient(_spender); if (approve(_spender, _value)) { spender.receiveApproval(msg.sender, _value, this, _extraData); return true; } } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval(address _spender, uint256 _addedValue) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval(address _spender, uint256 _subtractedValue) public returns (bool) { uint256 oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } /** * @title SimpleToken * @dev Very simple ERC20 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 * `StandardToken` functions. */ contract EcoEarthCoin is StandardToken { string public constant name = "EcoEarthCoin"; // solium-disable-line uppercase string public constant symbol = "ECOEC"; // solium-disable-line uppercase uint8 public constant decimals = 18; // solium-disable-line uppercase uint256 public constant INITIAL_SUPPLY = 50000000 * (10 ** uint256(decimals)); constructor() public { totalSupply_ = INITIAL_SUPPLY; balances[0x7A30d16B3088b9B3c7cab22ca25860eb22d0e4f1] = INITIAL_SUPPLY; emit Transfer(address(0), 0x7A30d16B3088b9B3c7cab22ca25860eb22d0e4f1, INITIAL_SUPPLY); } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"INITIAL_SUPPLY","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"},{"name":"_extraData","type":"bytes"}],"name":"approveAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]
Contract Creation Code
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Deployed Bytecode
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Swarm Source
bzzr://a7c8510cee8e43bbadbe70f8e4f14ad1805168cdb56d202ab567850cf34189a0
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