ETH Price: $2,998.95 (+2.58%)
Gas: 8 Gwei

Contract

0x3136eF851592aCf49CA4C825131E364170FA32b3
 
Transaction Hash
Method
Block
From
To
Value
0xbabdf4f935d34b4f29c4d456fc06de64b6d1b98301672f84867a6fef18340e2fTransfer(pending)2024-05-02 19:08:041 hrs ago1714676884IN
CoinFi: COFI Token
0 ETH(Pending)(Pending)
0x5b185fd03ac29d33fe17d6ecb08e61134bc9d1be393b39c2d82b91eb0851bb60Transfer(pending)2024-05-02 19:04:201 hr ago1714676660IN
CoinFi: COFI Token
0 ETH(Pending)(Pending)
Transfer196481002024-04-13 17:20:5919 days ago1713028859IN
CoinFi: COFI Token
0 ETH0.001119622.45586925
Approve196022072024-04-07 7:03:5925 days ago1712473439IN
CoinFi: COFI Token
0 ETH0.0002611510.00011632
Transfer195549872024-03-31 16:13:4732 days ago1711901627IN
CoinFi: COFI Token
0 ETH0.0007380122.68728432
Approve194821492024-03-21 9:28:4742 days ago1711013327IN
CoinFi: COFI Token
0 ETH0.0013749529.79518967
Approve194820892024-03-21 9:16:1142 days ago1711012571IN
CoinFi: COFI Token
0 ETH0.0013878430.10565717
Approve194037152024-03-10 9:10:4753 days ago1710061847IN
CoinFi: COFI Token
0 ETH0.0014525155.62006269
Transfer193092282024-02-26 4:01:2366 days ago1708920083IN
CoinFi: COFI Token
0 ETH0.0012394124.86490186
Approve192643202024-02-19 21:01:5972 days ago1708376519IN
CoinFi: COFI Token
0 ETH0.0030181365.47081366
Transfer192087552024-02-12 1:44:4780 days ago1707702287IN
CoinFi: COFI Token
0 ETH0.0012877725.82875725
Transfer191781752024-02-07 18:43:1185 days ago1707331391IN
CoinFi: COFI Token
0 ETH0.0032108758.84815816
Approve191230602024-01-31 1:00:1192 days ago1706662811IN
CoinFi: COFI Token
0 ETH0.0013647429.41323988
Transfer190835482024-01-25 12:12:3598 days ago1706184755IN
CoinFi: COFI Token
0 ETH0.001573731.57894242
Approve188563792023-12-24 15:00:47130 days ago1703430047IN
CoinFi: COFI Token
0 ETH0.0012699127.5475638
Transfer188502942023-12-23 18:27:47131 days ago1703356067IN
CoinFi: COFI Token
0 ETH0.0010567421.18996722
Transfer187754982023-12-13 6:34:35141 days ago1702449275IN
CoinFi: COFI Token
0 ETH0.0026003747.58583385
Transfer186612522023-11-27 6:38:59157 days ago1701067139IN
CoinFi: COFI Token
0 ETH0.000760623.21885635
Transfer186596632023-11-27 1:18:23157 days ago1701047903IN
CoinFi: COFI Token
0 ETH0.001744131.90947994
Transfer186059372023-11-19 12:44:47165 days ago1700397887IN
CoinFi: COFI Token
0 ETH0.0007475115
Transfer185563782023-11-12 14:18:35172 days ago1699798715IN
CoinFi: COFI Token
0 ETH0.0023391442.8054983
Transfer185185912023-11-07 7:29:23177 days ago1699342163IN
CoinFi: COFI Token
0 ETH0.0016886630.89506198
Transfer184958722023-11-04 3:02:11180 days ago1699066931IN
CoinFi: COFI Token
0 ETH0.0007054414.14576838
Transfer183694922023-10-17 10:27:11198 days ago1697538431IN
CoinFi: COFI Token
0 ETH0.000337266.766202
Approve183547222023-10-15 8:55:23200 days ago1697360123IN
CoinFi: COFI Token
0 ETH0.000162746.23200608
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Contract Source Code Verified (Exact Match)

Contract Name:
CoinFiToken

Compiler Version
v0.4.19+commit.c4cbbb05

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2018-01-27
*/

pragma solidity ^0.4.18;


/**
 * https://github.com/OpenZeppelin/zeppelin-solidity/blob/master/contracts/math/SafeMath.sol
 * https://github.com/OpenZeppelin/zeppelin-solidity/commit/49b42e86963df7192e7024e0e5bd30fa9d7ccbef
 * @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) {
    if (a == 0) {
      return 0;
    }
    uint256 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 c;
  }

  /**
  * @dev Substracts 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) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}


/**
 * https://raw.githubusercontent.com/OpenZeppelin/zeppelin-solidity/master/contracts/token/ERC20/ERC20Basic.sol
 * https://github.com/OpenZeppelin/zeppelin-solidity/commit/370e6a882aef6b9600949594d3a3e4854260d51e
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  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);
}


/**
 * https://raw.githubusercontent.com/OpenZeppelin/zeppelin-solidity/master/contracts/token/ERC20/ERC20.sol
 * https://github.com/OpenZeppelin/zeppelin-solidity/commit/c5d66183abcb63a90a2528b8333b2b17067629fc
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  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 Approval(address indexed owner, address indexed spender, uint256 value);
}


/**
 * https://raw.githubusercontent.com/OpenZeppelin/zeppelin-solidity/master/contracts/token/ERC20/SafeERC20.sol
 * https://github.com/OpenZeppelin/zeppelin-solidity/commit/b67856c69d3536f28d51b75b270dfff79343bf93
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure.
 * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
  function safeTransfer(ERC20Basic token, address to, uint256 value) internal {
    assert(token.transfer(to, value));
  }

  function safeTransferFrom(ERC20 token, address from, address to, uint256 value) internal {
    assert(token.transferFrom(from, to, value));
  }

  function safeApprove(ERC20 token, address spender, uint256 value) internal {
    assert(token.approve(spender, value));
  }
}


/**
 * https://raw.githubusercontent.com/OpenZeppelin/zeppelin-solidity/master/contracts/token/ERC20/BasicToken.sol
 * https://github.com/OpenZeppelin/zeppelin-solidity/commit/c5d66183abcb63a90a2528b8333b2b17067629fc
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  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]);

    // SafeMath.sub will throw if there is not enough balance.
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    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 balance) {
    return balances[_owner];
  }
}


/**
 * https://raw.githubusercontent.com/OpenZeppelin/zeppelin-solidity/master/contracts/token/ERC20/StandardToken.sol
 * https://github.com/OpenZeppelin/zeppelin-solidity/commit/c5d66183abcb63a90a2528b8333b2b17067629fc
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, BasicToken {

  mapping (address => mapping (address => uint256)) internal allowed;


  /**
   * @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);
    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) {
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
    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, uint _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 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, uint _subtractedValue) public returns (bool) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }
}


/**
 * https://raw.githubusercontent.com/OpenZeppelin/zeppelin-solidity/master/contracts/ownership/Ownable.sol
 * https://github.com/OpenZeppelin/zeppelin-solidity/commit/e60aee61f20d25bffa0a1f651247810a8bc8a660
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
  address public owner;


  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);


  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  function Ownable() public {
    owner = msg.sender;
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }

  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) public onlyOwner {
    require(newOwner != address(0));
    OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }
}


/**
 * https://raw.githubusercontent.com/OpenZeppelin/zeppelin-solidity/master/contracts/token/ERC20/TokenVesting.sol
 * https://github.com/OpenZeppelin/zeppelin-solidity/commit/c5d66183abcb63a90a2528b8333b2b17067629fc
 * @title TokenVesting
 * @dev A token holder contract that can release its token balance gradually like a
 * typical vesting scheme, with a cliff and vesting period. Optionally revocable by the
 * owner.
 */
contract TokenVesting is Ownable {
  using SafeMath for uint256;
  using SafeERC20 for ERC20Basic;

  event Released(uint256 amount);
  event Revoked();

  // beneficiary of tokens after they are released
  address public beneficiary;

  uint256 public cliff;
  uint256 public start;
  uint256 public duration;

  bool public revocable;

  mapping (address => uint256) public released;
  mapping (address => bool) public revoked;

  /**
   * @dev Creates a vesting contract that vests its balance of any ERC20 token to the
   * _beneficiary, gradually in a linear fashion until _start + _duration. By then all
   * of the balance will have vested.
   * @param _beneficiary address of the beneficiary to whom vested tokens are transferred
   * @param _cliff duration in seconds of the cliff in which tokens will begin to vest
   * @param _duration duration in seconds of the period in which the tokens will vest
   * @param _revocable whether the vesting is revocable or not
   */
  function TokenVesting(address _beneficiary, uint256 _start, uint256 _cliff, uint256 _duration, bool _revocable) public {
    require(_beneficiary != address(0));
    require(_cliff <= _duration);

    beneficiary = _beneficiary;
    revocable = _revocable;
    duration = _duration;
    cliff = _start.add(_cliff);
    start = _start;
  }

  /**
   * @notice Transfers vested tokens to beneficiary.
   * @param token ERC20 token which is being vested
   */
  function release(ERC20Basic token) public {
    uint256 unreleased = releasableAmount(token);

    require(unreleased > 0);

    released[token] = released[token].add(unreleased);

    token.safeTransfer(beneficiary, unreleased);

    Released(unreleased);
  }

  /**
   * @notice Allows the owner to revoke the vesting. Tokens already vested
   * remain in the contract, the rest are returned to the owner.
   * @param token ERC20 token which is being vested
   */
  function revoke(ERC20Basic token) public onlyOwner {
    require(revocable);
    require(!revoked[token]);

    uint256 balance = token.balanceOf(this);

    uint256 unreleased = releasableAmount(token);
    uint256 refund = balance.sub(unreleased);

    revoked[token] = true;

    token.safeTransfer(owner, refund);

    Revoked();
  }

  /**
   * @dev Calculates the amount that has already vested but hasn't been released yet.
   * @param token ERC20 token which is being vested
   */
  function releasableAmount(ERC20Basic token) public view returns (uint256) {
    return vestedAmount(token).sub(released[token]);
  }

  /**
   * @dev Calculates the amount that has already vested.
   * @param token ERC20 token which is being vested
   */
  function vestedAmount(ERC20Basic token) public view returns (uint256) {
    uint256 currentBalance = token.balanceOf(this);
    uint256 totalBalance = currentBalance.add(released[token]);

    if (now < cliff) {
      return 0;
    } else if (now >= start.add(duration) || revoked[token]) {
      return totalBalance;
    } else {
      return totalBalance.mul(now.sub(start)).div(duration);
    }
  }
}


contract CoinFiToken is StandardToken, Ownable {
    string public constant name = "CoinFi";
    string public constant symbol = "COFI";
    uint8 public constant decimals = 18;

    // 300 million tokens minted
    uint256 public constant INITIAL_SUPPLY = 300000000 * (10 ** uint256(decimals));

    // Indicates whether token transfer is enabled
    bool public transferEnabled = false;

    // Specifies airdrop contract address which can transfer tokens before unlock
    address public airdropAddress;

    modifier onlyWhenTransferEnabled() {
        if (!transferEnabled) {
            require(msg.sender == owner || msg.sender == airdropAddress);
        }
        _;
    }

    function CoinFiToken() public {
        totalSupply_ = INITIAL_SUPPLY;
        balances[msg.sender] = INITIAL_SUPPLY;
        Transfer(0x0, msg.sender, INITIAL_SUPPLY);
    }

    /**
     * Enables everyone to start transferring their tokens.
     * This can only be called by the token owner.
     */
    function enableTransfer() external onlyOwner {
        transferEnabled = true;
    }

    /**
     * Disables the ability to transfer tokens except by owner.
     * This can only be called by the token owner.
     */
    function disableTransfer() external onlyOwner {
        transferEnabled = false;
    }

    /**
     * Sets the airdrop contract address which is allowed to transfer before unlock.
     * This can only be called by the token owner.
     */
    function setAirdropAddress(address _airdropAddress) external onlyOwner {
        airdropAddress = _airdropAddress;
    }

    /**
     * Overrides the ERC20Basic transfer() function to only allow token transfers after enableTransfer() is called.
     */
    function transfer(address _to, uint256 _value) public onlyWhenTransferEnabled returns (bool) {
        return super.transfer(_to, _value);
    }

    /**
     * Overrides the ERC20Basic transferFrom() function to only allow token transfers after enableTransfer() is called.
     */
    function transferFrom(address _from, address _to, uint256 _value) public onlyWhenTransferEnabled returns (bool) {
        return super.transferFrom(_from, _to, _value);
    }
}


contract CoinFiAirdrop is Ownable {
    uint256 public constant AIRDROP_AMOUNT = 500 * (10**18);

    // Actual token instance to airdrop
    ERC20 public token;

    function CoinFiAirdrop(ERC20 _token) public {
        token = _token;
    }

    function sendAirdrop(address[] airdropRecipients, bool allowDuplicates) external onlyOwner {
        require(airdropRecipients.length > 0);

        for (uint i = 0; i < airdropRecipients.length; i++) {
            if (token.balanceOf(airdropRecipients[i]) == 0 || allowDuplicates) {
                token.transferFrom(owner, airdropRecipients[i], AIRDROP_AMOUNT);
            }
        }
    }
}

Contract Security Audit

Contract ABI

[{"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":true,"inputs":[],"name":"transferEnabled","outputs":[{"name":"","type":"bool"}],"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":"airdropAddress","outputs":[{"name":"","type":"address"}],"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":"_airdropAddress","type":"address"}],"name":"setAirdropAddress","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"disableTransfer","outputs":[],"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"},{"constant":false,"inputs":[],"name":"enableTransfer","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","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"},{"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"}]

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Deployed Bytecode

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