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1 address found via
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Method
Block
From
To
Approve243790162026-02-03 21:29:4713 hrs ago1770154187IN
OptionRoom: Old ROOM Token
0 ETH0.000121672.6326253
Approve243768302026-02-03 14:08:4720 hrs ago1770127727IN
OptionRoom: Old ROOM Token
0 ETH0.000098892.13974401
Approve243760432026-02-03 11:30:5923 hrs ago1770118259IN
OptionRoom: Old ROOM Token
0 ETH0.000005720.23674943
Approve243729282026-02-03 1:03:3533 hrs ago1770080615IN
OptionRoom: Old ROOM Token
0 ETH0.000098052.12203367
Approve243575372026-01-31 21:27:593 days ago1769894879IN
OptionRoom: Old ROOM Token
0 ETH0.000144993.13717756
Approve243121622026-01-25 13:35:479 days ago1769348147IN
OptionRoom: Old ROOM Token
0 ETH0.000001890.04071955
Approve242933052026-01-22 22:27:2312 days ago1769120843IN
OptionRoom: Old ROOM Token
0 ETH0.000094882.05303995
Approve242866542026-01-22 0:09:2313 days ago1769040563IN
OptionRoom: Old ROOM Token
0 ETH0.000002590.05619351
Approve242797012026-01-21 0:53:3514 days ago1768956815IN
OptionRoom: Old ROOM Token
0 ETH0.00009582.07346388
Approve242708292026-01-19 19:11:3515 days ago1768849895IN
OptionRoom: Old ROOM Token
0 ETH0.000094842.05214108
Approve242674542026-01-19 7:54:3516 days ago1768809275IN
OptionRoom: Old ROOM Token
0 ETH0.000001380.02976557
Approve242597522026-01-18 6:09:1117 days ago1768716551IN
OptionRoom: Old ROOM Token
0 ETH0.000000760.02906763
Approve242583442026-01-18 1:27:1117 days ago1768699631IN
OptionRoom: Old ROOM Token
0 ETH0.000001120.04635767
Approve242472792026-01-16 12:26:2318 days ago1768566383IN
OptionRoom: Old ROOM Token
0 ETH0.000002830.06137447
Approve242449302026-01-16 4:35:1119 days ago1768538111IN
OptionRoom: Old ROOM Token
0 ETH0.000025171.04043171
Approve242379422026-01-15 5:12:2320 days ago1768453943IN
OptionRoom: Old ROOM Token
0 ETH0.00000320.06944624
Approve242283942026-01-13 21:14:2321 days ago1768338863IN
OptionRoom: Old ROOM Token
0 ETH0.000005010.10852514
Transfer242059352026-01-10 17:57:2324 days ago1768067843IN
OptionRoom: Old ROOM Token
0 ETH0.000102271.97880038
Transfer242058332026-01-10 17:36:3524 days ago1768066595IN
OptionRoom: Old ROOM Token
0 ETH0.00008561.82489061
Approve241990382026-01-09 18:52:2325 days ago1767984743IN
OptionRoom: Old ROOM Token
0 ETH0.000001310.05428393
Approve241968552026-01-09 11:34:1125 days ago1767958451IN
OptionRoom: Old ROOM Token
0 ETH0.000001510.03288093
Approve241795062026-01-07 1:25:5928 days ago1767749159IN
OptionRoom: Old ROOM Token
0 ETH0.000006150.13326495
Transfer241498892026-01-02 22:17:4732 days ago1767392267IN
OptionRoom: Old ROOM Token
0 ETH0.000051031.08819821
Transfer241202252025-12-29 18:55:2336 days ago1767034523IN
OptionRoom: Old ROOM Token
0 ETH0.00005151.09792283
Transfer241197892025-12-29 17:27:4736 days ago1767029267IN
OptionRoom: Old ROOM Token
0 ETH0.000098452.09897136
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-117967152021-02-05 14:11:481824 days ago1612534308
OptionRoom: Old ROOM Token
0.13 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
RoomToken

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license
/**
 *Submitted for verification at Etherscan.io on 2021-01-27
*/

/**
 *Submitted for verification at Etherscan.io on 2021-01-26
*/

pragma solidity ^0.5.16;

interface IERC20 {
    function totalSupply() external view returns (uint);
    function balanceOf(address account) external view returns (uint);
    function transfer(address recipient, uint amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint);
    function approve(address spender, uint amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint amount) external returns (bool);
	event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
}

library SafeMath {
    
    function add(uint a, uint b) internal pure returns (uint) {
        uint c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }
    
    function sub(uint a, uint b) internal pure returns (uint) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }
    
    function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
        require(b <= a, errorMessage);
        uint c = a - b;

        return c;
    }
    
    function mul(uint a, uint b) internal pure returns (uint) {
        if (a == 0) {
            return 0;
        }

        uint c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }
    
    function div(uint a, uint b) internal pure returns (uint) {
        return div(a, b, "SafeMath: division by zero");
    }
    
    function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, errorMessage);
        uint c = a / b;

        return c;
    }
}


contract Context {
    constructor () internal { }
    // solhint-disable-previous-line no-empty-blocks

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }
}

contract ERC20 is Context, IERC20 {
    using SafeMath for uint;

    mapping (address => uint) private _balances;

    mapping (address => mapping (address => uint)) private _allowances;

    uint private _totalSupply;
    function totalSupply() public view returns (uint) {
        return _totalSupply;
    }
    
    function balanceOf(address account) public view returns (uint) {
        return _balances[account];
    }
    
    function transfer(address recipient, uint amount) public returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }
    
    function allowance(address owner, address spender) public view returns (uint) {
        return _allowances[owner][spender];
    }
    
    function approve(address spender, uint amount) public returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
    
    function transferFrom(address sender, address recipient, uint amount) public returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }
    
    function increaseAllowance(address spender, uint addedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }
    
    function decreaseAllowance(address spender, uint subtractedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }
    
    function _transfer(address sender, address recipient, uint amount) internal {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }
    
    function _mint(address account, uint amount) internal {
        require(account != address(0), "ERC20: mint to the zero address");

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }
    
    function _burn(address account, uint amount) internal {
        require(account != address(0), "ERC20: burn from the zero address");

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }
    
    function _approve(address owner, address spender, uint amount) internal {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
}

contract ERC20Detailed is ERC20 {
    string private _name;
    string private _symbol;
    uint8 private _decimals;

    constructor (string memory name, string memory symbol, uint8 decimals) public {
        _name = name;
        _symbol = symbol;
        _decimals = decimals;
    }
    function name() public view returns (string memory) {
        return _name;
    }
    function symbol() public view returns (string memory) {
        return _symbol;
    }
    function decimals() public view returns (uint8) {
        return _decimals;
    }
}

contract RoomToken is ERC20Detailed {
  
  constructor () public ERC20Detailed("OptionRoom Token", "ROOM", 18) {
      // mint 100,000,000 tokens with 18 decimals and send them to token deployer
      // mint function is internal and can not be called after deployment
      _mint(msg.sender,100000000e18 ); 
  }

}

Contract Security Audit

Contract ABI

API
[{"inputs":[],"payable":false,"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"},{"constant":true,"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","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":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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Swarm Source

bzzr://33906ff8c5fd45638073d3923b63968c0ed5ef2ceb990836803aacdc014a4db6

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
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OVERVIEW

OptionRoom is a user-governed Oracle and forecast protocol built on Polkadot.

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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.