ETH Price: $3,385.61 (-1.51%)
Gas: 1 Gwei

Contract

0x7d655c57f71464B6f83811C55D84009Cd9f5221C
 
Transaction Hash
Method
Block
From
To
Value
0x21f7b72906d54da89830d4e3064302afb87d0311119476708a6893f7874f682f Donate(pending)2024-06-23 5:49:196 days ago1719121759IN
Gitcoin: Bulk Checkout
0.00057855 ETH(Pending)(Pending)
0xcf66b5742af8cb588e57bc237240763d8ac78065216b80d3d3fd6d5c5968d973 Donate(pending)2024-06-23 3:57:276 days ago1719115047IN
Gitcoin: Bulk Checkout
0.01575 ETH(Pending)(Pending)
0x323b71337536035ea585eef1f0530b09ba6aa357fbc48b1a1a11b821fe5d2af6 Donate(pending)2024-06-23 3:39:076 days ago1719113947IN
Gitcoin: Bulk Checkout
0.0006825 ETH(Pending)(Pending)
Donate201453562024-06-22 6:08:237 days ago1719036503IN
Gitcoin: Bulk Checkout
0 ETH0.000163192
Donate201008942024-06-16 0:53:4713 days ago1718499227IN
Gitcoin: Bulk Checkout
0.0063 ETH0.000418412.99275364
Donate198501832024-05-11 23:50:4748 days ago1715471447IN
Gitcoin: Bulk Checkout
0.00077643 ETH0.000160132.61670607
Donate198500912024-05-11 23:32:1148 days ago1715470331IN
Gitcoin: Bulk Checkout
0.00078015 ETH0.000164462.68736654
Donate198500912024-05-11 23:32:1148 days ago1715470331IN
Gitcoin: Bulk Checkout
0.0007875 ETH0.00016472.69126925
Donate198500262024-05-11 23:19:1148 days ago1715469551IN
Gitcoin: Bulk Checkout
0.000798 ETH0.000165882.71057305
Donate198500262024-05-11 23:19:1148 days ago1715469551IN
Gitcoin: Bulk Checkout
0.00080535 ETH0.000167952.74439006
Donate198500262024-05-11 23:19:1148 days ago1715469551IN
Gitcoin: Bulk Checkout
0.00079542 ETH0.00016852.75283984
Donate198498782024-05-11 22:49:2348 days ago1715467763IN
Gitcoin: Bulk Checkout
0.000777 ETH0.000171522.8027244
Donate198496792024-05-11 22:09:2348 days ago1715465363IN
Gitcoin: Bulk Checkout
0.00078272 ETH0.000175322.8643343
Donate198496792024-05-11 22:09:2348 days ago1715465363IN
Gitcoin: Bulk Checkout
0.0007875 ETH0.000177712.90381707
Donate198496792024-05-11 22:09:2348 days ago1715465363IN
Gitcoin: Bulk Checkout
0.000819 ETH0.000177712.90383219
Donate198493262024-05-11 20:58:1148 days ago1715461091IN
Gitcoin: Bulk Checkout
0.0007875 ETH0.000183593
Donate198370252024-05-10 3:42:5950 days ago1715312579IN
Gitcoin: Bulk Checkout
0.0008085 ETH0.000183593
Donate197523882024-04-28 7:40:4762 days ago1714290047IN
Gitcoin: Bulk Checkout
0.0005544 ETH0.000382945.88994933
Donate197429422024-04-26 23:57:2363 days ago1714175843IN
Gitcoin: Bulk Checkout
0.000507 ETH0.000207875.20638684
Donate197285722024-04-24 23:41:3565 days ago1714002095IN
Gitcoin: Bulk Checkout
0.00056385 ETH0.000412546.74108762
Donate197153912024-04-23 3:24:3567 days ago1713842675IN
Gitcoin: Bulk Checkout
0.0005544 ETH0.000450896.93517414
Donate196999292024-04-20 23:33:1169 days ago1713655991IN
Gitcoin: Bulk Checkout
0.0005775 ETH0.000427946.58096641
Donate196948752024-04-20 6:35:2370 days ago1713594923IN
Gitcoin: Bulk Checkout
0.000507 ETH0.000288337.22178261
Transfer191397972024-02-02 9:23:47147 days ago1706865827IN
Gitcoin: Bulk Checkout
0.00061578 ETH0.0003870918.43311727
Donate191162502024-01-30 2:08:59151 days ago1706580539IN
Gitcoin: Bulk Checkout
0.0105 ETH0.0011205518.31
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Latest 25 internal transactions (View All)

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Parent Transaction Hash Block From To Value
201008942024-06-16 0:53:4713 days ago1718499227
Gitcoin: Bulk Checkout
0.0003 ETH
201008942024-06-16 0:53:4713 days ago1718499227
Gitcoin: Bulk Checkout
0.001 ETH
201008942024-06-16 0:53:4713 days ago1718499227
Gitcoin: Bulk Checkout
0.001 ETH
201008942024-06-16 0:53:4713 days ago1718499227
Gitcoin: Bulk Checkout
0.001 ETH
201008942024-06-16 0:53:4713 days ago1718499227
Gitcoin: Bulk Checkout
0.001 ETH
201008942024-06-16 0:53:4713 days ago1718499227
Gitcoin: Bulk Checkout
0.001 ETH
201008942024-06-16 0:53:4713 days ago1718499227
Gitcoin: Bulk Checkout
0.001 ETH
198501832024-05-11 23:50:4748 days ago1715471447
Gitcoin: Bulk Checkout
0.00003697 ETH
198501832024-05-11 23:50:4748 days ago1715471447
Gitcoin: Bulk Checkout
0.00073946 ETH
198500912024-05-11 23:32:1148 days ago1715470331
Gitcoin: Bulk Checkout
0.00003715 ETH
198500912024-05-11 23:32:1148 days ago1715470331
Gitcoin: Bulk Checkout
0.000743 ETH
198500912024-05-11 23:32:1148 days ago1715470331
Gitcoin: Bulk Checkout
0.0000375 ETH
198500912024-05-11 23:32:1148 days ago1715470331
Gitcoin: Bulk Checkout
0.00075 ETH
198500262024-05-11 23:19:1148 days ago1715469551
Gitcoin: Bulk Checkout
0.000038 ETH
198500262024-05-11 23:19:1148 days ago1715469551
Gitcoin: Bulk Checkout
0.00076 ETH
198500262024-05-11 23:19:1148 days ago1715469551
Gitcoin: Bulk Checkout
0.00003835 ETH
198500262024-05-11 23:19:1148 days ago1715469551
Gitcoin: Bulk Checkout
0.000767 ETH
198500262024-05-11 23:19:1148 days ago1715469551
Gitcoin: Bulk Checkout
0.00003787 ETH
198500262024-05-11 23:19:1148 days ago1715469551
Gitcoin: Bulk Checkout
0.00075754 ETH
198498782024-05-11 22:49:2348 days ago1715467763
Gitcoin: Bulk Checkout
0.000037 ETH
198498782024-05-11 22:49:2348 days ago1715467763
Gitcoin: Bulk Checkout
0.00074 ETH
198496792024-05-11 22:09:2348 days ago1715465363
Gitcoin: Bulk Checkout
0.00003727 ETH
198496792024-05-11 22:09:2348 days ago1715465363
Gitcoin: Bulk Checkout
0.00074545 ETH
198496792024-05-11 22:09:2348 days ago1715465363
Gitcoin: Bulk Checkout
0.0000375 ETH
198496792024-05-11 22:09:2348 days ago1715465363
Gitcoin: Bulk Checkout
0.00075 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
BulkCheckout

Compiler Version
v0.6.7+commit.b8d736ae

Optimization Enabled:
No with 200 runs

Other Settings:
petersburg EvmVersion, GNU GPLv3 license

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2020-06-11
*/

pragma solidity ^0.6.2;
pragma experimental ABIEncoderV2;


contract ReentrancyGuard {
  bool private _notEntered;

  constructor() internal {
    // Storing an initial non-zero value makes deployment a bit more
    // expensive, but in exchange the refund on every call to nonReentrant
    // will be lower in amount. Since refunds are capped to a percetange of
    // the total transaction's gas, it is best to keep them low in cases
    // like this one, to increase the likelihood of the full refund coming
    // into effect.
    _notEntered = true;
  }

  /**
   * @dev Prevents a contract from calling itself, directly or indirectly.
   * Calling a `nonReentrant` function from another `nonReentrant`
   * function is not supported. It is possible to prevent this from happening
   * by making the `nonReentrant` function external, and make it call a
   * `private` function that does the actual work.
   */
  modifier nonReentrant() {
    // On the first call to nonReentrant, _notEntered will be true
    require(_notEntered, "ReentrancyGuard: reentrant call");

    // Any calls to nonReentrant after this point will fail
    _notEntered = false;

    _;

    // By storing the original value once again, a refund is triggered (see
    // https://eips.ethereum.org/EIPS/eip-2200)
    _notEntered = true;
  }
}


contract Context {
  // Empty internal constructor, to prevent people from mistakenly deploying
  // an instance of this contract, which should be used via inheritance.
  constructor() internal {}

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

  function _msgData() internal virtual view returns (bytes memory) {
    this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
    return msg.data;
  }
}


contract Pausable is Context {
  /**
   * @dev Emitted when the pause is triggered by `account`.
   */
  event Paused(address account);

  /**
   * @dev Emitted when the pause is lifted by `account`.
   */
  event Unpaused(address account);

  bool private _paused;

  /**
   * @dev Initializes the contract in unpaused state.
   */
  constructor() internal {
    _paused = false;
  }

  /**
   * @dev Returns true if the contract is paused, and false otherwise.
   */
  function paused() public view returns (bool) {
    return _paused;
  }

  /**
   * @dev Modifier to make a function callable only when the contract is not paused.
   */
  modifier whenNotPaused() {
    require(!_paused, "Pausable: paused");
    _;
  }

  /**
   * @dev Modifier to make a function callable only when the contract is paused.
   */
  modifier whenPaused() {
    require(_paused, "Pausable: not paused");
    _;
  }

  /**
   * @dev Triggers stopped state.
   */
  function _pause() internal virtual whenNotPaused {
    _paused = true;
    emit Paused(_msgSender());
  }

  /**
   * @dev Returns to normal state.
   */
  function _unpause() internal virtual whenPaused {
    _paused = false;
    emit Unpaused(_msgSender());
  }
}


contract Ownable is Context {
  address private _owner;

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

  /**
   * @dev Initializes the contract setting the deployer as the initial owner.
   */
  constructor() internal {
    address msgSender = _msgSender();
    _owner = msgSender;
    emit OwnershipTransferred(address(0), msgSender);
  }

  /**
   * @dev Returns the address of the current owner.
   */
  function owner() public view returns (address) {
    return _owner;
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(_owner == _msgSender(), "Ownable: caller is not the owner");
    _;
  }

  /**
   * @dev Leaves the contract without owner. It will not be possible to call
   * `onlyOwner` functions anymore. Can only be called by the current owner.
   *
   * NOTE: Renouncing ownership will leave the contract without an owner,
   * thereby removing any functionality that is only available to the owner.
   */
  function renounceOwnership() public virtual onlyOwner {
    emit OwnershipTransferred(_owner, address(0));
    _owner = address(0);
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`).
   * Can only be called by the current owner.
   */
  function transferOwnership(address newOwner) public virtual onlyOwner {
    require(newOwner != address(0), "Ownable: new owner is the zero address");
    emit OwnershipTransferred(_owner, newOwner);
    _owner = newOwner;
  }
}


interface IERC20 {
  /**
   * @dev Returns the amount of tokens in existence.
   */
  function totalSupply() external view returns (uint256);

  /**
   * @dev Returns the amount of tokens owned by `account`.
   */
  function balanceOf(address account) external view returns (uint256);

  /**
   * @dev Moves `amount` tokens from the caller's account to `recipient`.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transfer(address recipient, uint256 amount) external returns (bool);

  /**
   * @dev Returns the remaining number of tokens that `spender` will be
   * allowed to spend on behalf of `owner` through {transferFrom}. This is
   * zero by default.
   *
   * This value changes when {approve} or {transferFrom} are called.
   */
  function allowance(address owner, address spender) external view returns (uint256);

  /**
   * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * IMPORTANT: 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
   *
   * Emits an {Approval} event.
   */
  function approve(address spender, uint256 amount) external returns (bool);

  /**
   * @dev Moves `amount` tokens from `sender` to `recipient` using the
   * allowance mechanism. `amount` is then deducted from the caller's
   * allowance.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transferFrom(
    address sender,
    address recipient,
    uint256 amount
  ) external returns (bool);

  /**
   * @dev Emitted when `value` tokens are moved from one account (`from`) to
   * another (`to`).
   *
   * Note that `value` may be zero.
   */
  event Transfer(address indexed from, address indexed to, uint256 value);

  /**
   * @dev Emitted when the allowance of a `spender` for an `owner` is set by
   * a call to {approve}. `value` is the new allowance.
   */
  event Approval(address indexed owner, address indexed spender, uint256 value);
}


library Address {
  /**
   * @dev Returns true if `account` is a contract.
   *
   * [IMPORTANT]
   * ====
   * It is unsafe to assume that an address for which this function returns
   * false is an externally-owned account (EOA) and not a contract.
   *
   * Among others, `isContract` will return false for the following
   * types of addresses:
   *
   *  - an externally-owned account
   *  - a contract in construction
   *  - an address where a contract will be created
   *  - an address where a contract lived, but was destroyed
   * ====
   */
  function isContract(address account) internal view returns (bool) {
    // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
    // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
    // for accounts without code, i.e. `keccak256('')`
    bytes32 codehash;
    bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
    // solhint-disable-next-line no-inline-assembly
    assembly {
      codehash := extcodehash(account)
    }
    return (codehash != accountHash && codehash != 0x0);
  }

  /**
   * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
   * `recipient`, forwarding all available gas and reverting on errors.
   *
   * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
   * of certain opcodes, possibly making contracts go over the 2300 gas limit
   * imposed by `transfer`, making them unable to receive funds via
   * `transfer`. {sendValue} removes this limitation.
   *
   * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
   *
   * IMPORTANT: because control is transferred to `recipient`, care must be
   * taken to not create reentrancy vulnerabilities. Consider using
   * {ReentrancyGuard} or the
   * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
   */
  function sendValue(address payable recipient, uint256 amount) internal {
    require(address(this).balance >= amount, "Address: insufficient balance");

    // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
    (bool success, ) = recipient.call{value: amount}("");
    require(success, "Address: unable to send value, recipient may have reverted");
  }
}


library SafeMath {
  /**
   * @dev Returns the addition of two unsigned integers, reverting on
   * overflow.
   *
   * Counterpart to Solidity's `+` operator.
   *
   * Requirements:
   * - Addition cannot overflow.
   */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a, "SafeMath: addition overflow");

    return c;
  }

  /**
   * @dev Returns the subtraction of two unsigned integers, reverting on
   * overflow (when the result is negative).
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   * - Subtraction cannot overflow.
   */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    return sub(a, b, "SafeMath: subtraction overflow");
  }

  /**
   * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
   * overflow (when the result is negative).
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   * - Subtraction cannot overflow.
   */
  function sub(
    uint256 a,
    uint256 b,
    string memory errorMessage
  ) internal pure returns (uint256) {
    require(b <= a, errorMessage);
    uint256 c = a - b;

    return c;
  }

  /**
   * @dev Returns the multiplication of two unsigned integers, reverting on
   * overflow.
   *
   * Counterpart to Solidity's `*` operator.
   *
   * Requirements:
   * - Multiplication cannot overflow.
   */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
    if (a == 0) {
      return 0;
    }

    uint256 c = a * b;
    require(c / a == b, "SafeMath: multiplication overflow");

    return c;
  }

  /**
   * @dev Returns the integer division of two unsigned integers. Reverts on
   * division by zero. The result is rounded towards zero.
   *
   * Counterpart to Solidity's `/` operator. Note: this function uses a
   * `revert` opcode (which leaves remaining gas untouched) while Solidity
   * uses an invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    return div(a, b, "SafeMath: division by zero");
  }

  /**
   * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
   * division by zero. The result is rounded towards zero.
   *
   * Counterpart to Solidity's `/` operator. Note: this function uses a
   * `revert` opcode (which leaves remaining gas untouched) while Solidity
   * uses an invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function div(
    uint256 a,
    uint256 b,
    string memory errorMessage
  ) internal pure returns (uint256) {
    // Solidity only automatically asserts when dividing by 0
    require(b > 0, errorMessage);
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold

    return c;
  }

  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * Reverts when dividing by zero.
   *
   * Counterpart to Solidity's `%` operator. This function uses a `revert`
   * opcode (which leaves remaining gas untouched) while Solidity uses an
   * invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function mod(uint256 a, uint256 b) internal pure returns (uint256) {
    return mod(a, b, "SafeMath: modulo by zero");
  }

  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * Reverts with custom message when dividing by zero.
   *
   * Counterpart to Solidity's `%` operator. This function uses a `revert`
   * opcode (which leaves remaining gas untouched) while Solidity uses an
   * invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function mod(
    uint256 a,
    uint256 b,
    string memory errorMessage
  ) internal pure returns (uint256) {
    require(b != 0, errorMessage);
    return a % b;
  }
}


library SafeERC20 {
  using SafeMath for uint256;
  using Address for address;

  function safeTransfer(
    IERC20 token,
    address to,
    uint256 value
  ) internal {
    _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
  }

  function safeTransferFrom(
    IERC20 token,
    address from,
    address to,
    uint256 value
  ) internal {
    _callOptionalReturn(
      token,
      abi.encodeWithSelector(token.transferFrom.selector, from, to, value)
    );
  }

  function safeApprove(
    IERC20 token,
    address spender,
    uint256 value
  ) internal {
    // safeApprove should only be called when setting an initial allowance,
    // or when resetting it to zero. To increase and decrease it, use
    // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
    // solhint-disable-next-line max-line-length
    require(
      (value == 0) || (token.allowance(address(this), spender) == 0),
      "SafeERC20: approve from non-zero to non-zero allowance"
    );
    _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
  }

  function safeIncreaseAllowance(
    IERC20 token,
    address spender,
    uint256 value
  ) internal {
    uint256 newAllowance = token.allowance(address(this), spender).add(value);
    _callOptionalReturn(
      token,
      abi.encodeWithSelector(token.approve.selector, spender, newAllowance)
    );
  }

  function safeDecreaseAllowance(
    IERC20 token,
    address spender,
    uint256 value
  ) internal {
    uint256 newAllowance = token.allowance(address(this), spender).sub(
      value,
      "SafeERC20: decreased allowance below zero"
    );
    _callOptionalReturn(
      token,
      abi.encodeWithSelector(token.approve.selector, spender, newAllowance)
    );
  }

  /**
   * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
   * on the return value: the return value is optional (but if data is returned, it must not be false).
   * @param token The token targeted by the call.
   * @param data The call data (encoded using abi.encode or one of its variants).
   */
  function _callOptionalReturn(IERC20 token, bytes memory data) private {
    // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
    // we're implementing it ourselves.

    // A Solidity high level call has three parts:
    //  1. The target address is checked to verify it contains contract code
    //  2. The call itself is made, and success asserted
    //  3. The return value is decoded, which in turn checks the size of the returned data.
    // solhint-disable-next-line max-line-length
    require(address(token).isContract(), "SafeERC20: call to non-contract");

    // solhint-disable-next-line avoid-low-level-calls
    (bool success, bytes memory returndata) = address(token).call(data);
    require(success, "SafeERC20: low-level call failed");

    if (returndata.length > 0) {
      // Return data is optional
      // solhint-disable-next-line max-line-length
      require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }
  }
}


contract BulkCheckout is Ownable, Pausable, ReentrancyGuard {
  using Address for address payable;
  using SafeMath for uint256;
  /**
   * @notice Placeholder token address for ETH donations. This address is used in various other
   * projects as a stand-in for ETH
   */
  address constant ETH_TOKEN_PLACHOLDER = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

  /**
   * @notice Required parameters for each donation
   */
  struct Donation {
    address token; // address of the token to donate
    uint256 amount; // amount of tokens to donate
    address payable dest; // grant address
  }

  /**
   * @dev Emitted on each donation
   */
  event DonationSent(
    address indexed token,
    uint256 indexed amount,
    address dest,
    address indexed donor
  );

  /**
   * @dev Emitted when a token or ETH is withdrawn from the contract
   */
  event TokenWithdrawn(address indexed token, uint256 indexed amount, address indexed dest);

  /**
   * @notice Bulk gitcoin grant donations
   * @dev We assume all token approvals were already executed
   * @param _donations Array of donation structs
   */
  function donate(Donation[] calldata _donations) external payable nonReentrant whenNotPaused {
    // We track total ETH donations to ensure msg.value is exactly correct
    uint256 _ethDonationTotal = 0;

    for (uint256 i = 0; i < _donations.length; i++) {
      emit DonationSent(_donations[i].token, _donations[i].amount, _donations[i].dest, msg.sender);
      if (_donations[i].token != ETH_TOKEN_PLACHOLDER) {
        // Token donation
        // This method throws on failure, so there is no return value to check
        SafeERC20.safeTransferFrom(
          IERC20(_donations[i].token),
          msg.sender,
          _donations[i].dest,
          _donations[i].amount
        );
      } else {
        // ETH donation
        // See comments in Address.sol for why we use sendValue over transer
        _donations[i].dest.sendValue(_donations[i].amount);
        _ethDonationTotal = _ethDonationTotal.add(_donations[i].amount);
      }
    }

    // Revert if the wrong amount of ETH was sent
    require(msg.value == _ethDonationTotal, "BulkCheckout: Too much ETH sent");
  }

  /**
   * @notice Transfers all tokens of the input adress to the recipient. This is
   * useful tokens are accidentally sent to this contrasct
   * @param _tokenAddress address of token to send
   * @param _dest destination address to send tokens to
   */
  function withdrawToken(address _tokenAddress, address _dest) external onlyOwner {
    uint256 _balance = IERC20(_tokenAddress).balanceOf(address(this));
    emit TokenWithdrawn(_tokenAddress, _balance, _dest);
    SafeERC20.safeTransfer(IERC20(_tokenAddress), _dest, _balance);
  }

  /**
   * @notice Transfers all Ether to the specified address
   * @param _dest destination address to send ETH to
   */
  function withdrawEther(address payable _dest) external onlyOwner {
    uint256 _balance = address(this).balance;
    emit TokenWithdrawn(ETH_TOKEN_PLACHOLDER, _balance, _dest);
    _dest.sendValue(_balance);
  }

  /**
   * @notice Pause contract
   */
  function pause() external onlyOwner whenNotPaused {
    _pause();
  }

  /**
   * @notice Unpause contract
   */
  function unpause() external onlyOwner whenPaused {
    _unpause();
  }
}

Contract Security Audit

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":true,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"address","name":"dest","type":"address"},{"indexed":true,"internalType":"address","name":"donor","type":"address"}],"name":"DonationSent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":true,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"address","name":"dest","type":"address"}],"name":"TokenWithdrawn","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address payable","name":"dest","type":"address"}],"internalType":"struct BulkCheckout.Donation[]","name":"_donations","type":"tuple[]"}],"name":"donate","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"_dest","type":"address"}],"name":"withdrawEther","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_tokenAddress","type":"address"},{"internalType":"address","name":"_dest","type":"address"}],"name":"withdrawToken","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Swarm Source

ipfs://1aa95ec7b148b25af45f5c3ecaf32ee2f125bd4548561d1563ecb9b13e33c4cc

Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Validator Index Block Amount
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Transaction Hash Block Value Eth2 PubKey Valid
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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.