Address Contract Partially Verified
Address
0x509A38b7a1cC0dcd83Aa9d06214663D9eC7c7F4a
Balance
0 ETH
Nonce
1
Code Size
5072 bytes
Creator
0xd0967161...255D at tx 0x452e91b1...0733de
Indexed Transactions
0
Contract Bytecode
5072 bytes
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Verified Source Code Partial Match
Compiler: v0.4.18+commit.9cf6e910
Optimization: No
BlocksquareToken.sol 245 lines
pragma solidity ^0.4.18;
/*********************/
/* Blocksquare Token */
/*********************/
library SafeMath {
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 owned {
address public owner;
function owned() public{
owner = msg.sender;
}
modifier onlyOwner {
assert(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) public onlyOwner {
owner = newOwner;
}
}
/************************/
/* STANDARD ERC20 TOKEN */
/************************/
contract ERC20Token {
/** Functions needed to be implemented by ERC20 standard **/
function totalSupply() public constant returns (uint256 _totalSupply);
function balanceOf(address _owner) public constant returns (uint256 _balance);
function transfer(address _to, uint256 _amount) public returns (bool _success);
function transferFrom(address _from, address _to, uint256 _amount) public returns (bool _success);
function approve(address _spender, uint256 _amount) public returns (bool _success);
function allowance(address _owner, address _spender) public constant returns (uint256 _remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _amount);
event Approval(address indexed _owner, address indexed _spender, uint256 _amount);
}
/************************************/
/* BLOCKSQUARE TOKEN IMPLEMENTATION */
/************************************/
contract BlocksquareToken is ERC20Token, owned {
using SafeMath for uint256;
/* Public variables */
string public name = "BlocksquareToken";
string public symbol = "BST";
uint8 public decimals = 18;
bool public tokenFrozen;
/* Private variables */
uint256 supply;
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowances;
mapping (address => bool) allowedToMint;
/* Events */
event TokenFrozen(bool _frozen, string _reason);
event Mint(address indexed _to, uint256 _value);
/**
* Constructor function
*
* Initializes contract.
**/
function BlocksquareToken() public {
tokenFrozen = true;
}
/**
* Internal transfer function.
**/
function _transfer(address _from, address _to, uint256 _amount) private {
require(_to != 0x0);
require(_to != address(this));
require(balances[_from] >= _amount);
balances[_to] = balances[_to].add(_amount);
balances[_from] = balances[_from].sub(_amount);
Transfer(_from, _to, _amount);
}
/**
* Transfer token
*
* Send '_amount' tokens to '_to' from your address.
*
* @param _to Address of recipient.
* @param _amount Amount to send.
* @return Whether the transfer was successful or not.
**/
function transfer(address _to, uint256 _amount) public returns (bool _success) {
require(!tokenFrozen);
_transfer(msg.sender, _to, _amount);
return true;
}
/**
* Set allowance
*
* Allows '_spender' to spend '_amount' tokens from your address
*
* @param _spender Address of spender.
* @param _amount Max amount allowed to spend.
* @return Whether the approve was successful or not.
**/
function approve(address _spender, uint256 _amount) public returns (bool _success) {
allowances[msg.sender][_spender] = _amount;
Approval(msg.sender, _spender, _amount);
return true;
}
/**
*Transfer token from
*
* Send '_amount' token from address '_from' to address '_to'
*
* @param _from Address of sender.
* @param _to Address of recipient.
* @param _amount Amount of token to send.
* @return Whether the transfer was successful or not.
**/
function transferFrom(address _from, address _to, uint256 _amount) public returns (bool _success) {
require(_amount <= allowances[_from][msg.sender]);
require(!tokenFrozen);
_transfer(_from, _to, _amount);
allowances[_from][msg.sender] = allowances[_from][msg.sender].sub(_amount);
return true;
}
/**
* Mint Tokens
*
* Adds _amount of tokens to _atAddress
*
* @param _atAddress Adds tokens to address
* @param _amount Amount of tokens to add
**/
function mintTokens(address _atAddress, uint256 _amount) public {
require(allowedToMint[msg.sender]);
require(balances[_atAddress].add(_amount) > balances[_atAddress]);
require((supply.add(_amount)) <= 100000000 * 10**18);
supply = supply.add(_amount);
balances[_atAddress] = balances[_atAddress].add(_amount);
Mint(_atAddress, _amount);
Transfer(0x0, _atAddress, _amount);
}
/**
* Change freeze
*
* Changes status of frozen because of '_reason'
*
* @param _reason Reason for freezing or unfreezing token
**/
function changeFreezeTransaction(string _reason) public onlyOwner {
tokenFrozen = !tokenFrozen;
TokenFrozen(tokenFrozen, _reason);
}
/**
* Change mint address
*
* Changes the address to mint
*
* @param _addressToMint Address of new minter
**/
function changeAllowanceToMint(address _addressToMint) public onlyOwner {
allowedToMint[_addressToMint] = !allowedToMint[_addressToMint];
}
/**
* Get allowance
*
* @return Return amount allowed to spend from '_owner' by '_spender'
**/
function allowance(address _owner, address _spender) public constant returns (uint256 _remaining) {
return allowances[_owner][_spender];
}
/**
* Total amount of token
*
* @return Total amount of token
**/
function totalSupply() public constant returns (uint256 _totalSupply) {
return supply;
}
/**
* Balance of address
*
* Check balance of '_owner'
*
* @param _owner Address
* @return Amount of token in possession
**/
function balanceOf(address _owner) public constant returns (uint256 _balance) {
return balances[_owner];
}
/**
* Address allowed to mint
*
* Checks if '_address' is allowed to mint
*
* @param _address Address
* @return Allowance to mint
**/
function isAllowedToMint(address _address) public constant returns (bool _allowed) {
return allowedToMint[_address];
}
/** Revert if someone sends ether to this contract **/
function () public {
revert();
}
/**
* This part is here only for testing and will not be included into final version
**/
/**
function killContract() onlyOwner{
selfdestruct(msg.sender);
}
**/
}
Read Contract
allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
decimals 0x313ce567 → uint8
isAllowedToMint 0x4813d8a6 → bool
name 0x06fdde03 → string
owner 0x8da5cb5b → address
symbol 0x95d89b41 → string
tokenFrozen 0xafc361bc → bool
totalSupply 0x18160ddd → uint256
Write Contract 7 functions
These functions modify contract state and require a wallet transaction to execute.
approve 0x095ea7b3
address _spender
uint256 _amount
returns: bool
changeAllowanceToMint 0xa69eae7c
address _addressToMint
changeFreezeTransaction 0x74dfcabc
string _reason
mintTokens 0xf0dda65c
address _atAddress
uint256 _amount
transfer 0xa9059cbb
address _to
uint256 _amount
returns: bool
transferFrom 0x23b872dd
address _from
address _to
uint256 _amount
returns: bool
transferOwnership 0xf2fde38b
address newOwner
Token Balances (3)
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