ERC-20
Trading
Overview
Max Total Supply
1,000,000,000 HYB
Holders
5,728 (0.00%)
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
Balance
22,470.13626 HYBValue
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
HybridBlock
Compiler Version
v0.4.18+commit.9cf6e910
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2018-05-23 */ pragma solidity ^0.4.18; /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 { uint256 public totalSupply; string public name; string public symbol; uint8 public decimals; function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } 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 c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract HybridBlock is ERC20 { using SafeMath for uint256; // The owner of this token address public owner; // The balance in HybridBlock token that every address has mapping (address => uint256) balances; // Keeps track of allowances for particular address mapping (address => mapping (address => uint256)) public allowed; /** * The constructor for the HybridBlock token */ function HybridBlock() public { owner = 0x35118ba64fD141F43958cF9EB493F13aca976e6a; name = "Hybrid Block"; symbol = "HYB"; decimals = 18; totalSupply = 1e9 * 10 ** uint256(decimals); // Initially allocate all minted tokens to the owner balances[owner] = totalSupply; } /** * @dev Retrieves the balance of a specified address * @param _owner address The address to query the balance of. * @return A uint256 representing the amount owned by the _owner */ function balanceOf(address _owner) public view returns (uint256 balance) { return balances[_owner]; } /** * @dev Transfers tokens to a specific address * @param _to address The address to transfer tokens to * @param _value unit256 The amount to be transferred */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); // Subtract first balances[msg.sender] = balances[msg.sender].sub(_value); // Now add tokens balances[_to] = balances[_to].add(_value); // Notify that a transfer has occurred Transfer(msg.sender, _to, _value); return true; } /** * @dev Transfer on behalf of another address * @param _from address The address to send tokens from * @param _to address The address to send tokens 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]); // Decrease both the _from amount and the allowed transfer amount balances[_from] = balances[_from].sub(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); // Give _to the tokens balances[_to] = balances[_to].add(_value); // Notify that a transfer has occurred Transfer(_from, _to, _value); return true; } /** * @dev Approve sent address to spend the specified amount of tokens on * behalf of msg.sender * * See https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * for any potential security concerns * * @param _spender address The address that will spend funds * @param _value uint256 The number of tokens they are allowed to spend */ function approve(address _spender, uint256 _value) public returns (bool) { require(allowed[msg.sender][_spender] == 0); allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } /** * @dev Returns the amount a spender is allowed to spend for a particular * address * @param _owner address The address which owns the funds * @param _spender address The address which will spend the funds. * @return uint256 The number of tokens still available for the spender */ function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increases the number of tokens a spender is allowed to spend for * `msg.sender` * @param _spender address The address of the spender * @param _addedValue uint256 The amount to increase the spenders approval by */ function increaseApproval(address _spender, uint256 _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decreases the number of tokens a spender is allowed to spend for * `msg.sender` * @param _spender address The address of the spender * @param _subtractedValue uint256 The amount to decrease the spenders approval by */ function decreaseApproval(address _spender, uint256 _subtractedValue) public returns (bool) { uint _value = allowed[msg.sender][_spender]; if (_subtractedValue > _value) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = _value.sub(_subtractedValue); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } }
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":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowed","outputs":[{"name":"","type":"uint256"}],"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":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"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":"_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://642d60360acc440246621fb30dcff80d27dc81376cdee0115c8cde3717ddbb69
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