ETH Price: $2,559.88 (-1.96%)

Contract

0xE9ced91b72F71d02c14e1de998662Ec9bF8273aE
 

Overview

ETH Balance

0.0075 ETH

Eth Value

$19.20 (@ $2,559.88/ETH)

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Send ERC20Differ...171309962023-04-26 14:27:59524 days ago1682519279IN
0xE9ced91b...9bF8273aE
0.0075 ETH0.0305653643.23480076
Send Native Toke...169553792023-04-01 16:07:23548 days ago1680365243IN
0xE9ced91b...9bF8273aE
4.8 ETH0.0025263243.28194622
Send Native Toke...169485112023-03-31 16:57:35549 days ago1680281855IN
0xE9ced91b...9bF8273aE
2.265 ETH0.0027967833.13373232
Send Native Toke...169152822023-03-27 0:52:47554 days ago1679878367IN
0xE9ced91b...9bF8273aE
0.185 ETH0.000715214.25143737
Send Native Toke...169008082023-03-25 0:06:11556 days ago1679702771IN
0xE9ced91b...9bF8273aE
3.2 ETH0.000791916.53000909
Send Native Toke...168782042023-03-21 19:52:59559 days ago1679428379IN
0xE9ced91b...9bF8273aE
2.585 ETH0.0013585818.61158148
Send Native Toke...168659392023-03-20 2:33:47561 days ago1679279627IN
0xE9ced91b...9bF8273aE
0.825 ETH0.0006335812.62492149
Send Native Toke...168495062023-03-17 19:08:35563 days ago1679080115IN
0xE9ced91b...9bF8273aE
2.5 ETH0.0122429936.49657226
Send Native Toke...168341222023-03-15 15:16:11565 days ago1678893371IN
0xE9ced91b...9bF8273aE
0.32 ETH0.0016103233.61352042
Send Native Toke...167915432023-03-09 15:29:23571 days ago1678375763IN
0xE9ced91b...9bF8273aE
0.32 ETH0.0010283427.46280722
Send Native Toke...167838622023-03-08 13:33:59573 days ago1678282439IN
0xE9ced91b...9bF8273aE
0.325 ETH0.0012512920.31420673
Send Native Toke...167784202023-03-07 19:12:59573 days ago1678216379IN
0xE9ced91b...9bF8273aE
2.42 ETH0.0023174737.62316206
Send Native Toke...167733522023-03-07 2:06:23574 days ago1678154783IN
0xE9ced91b...9bF8273aE
1.76 ETH0.001584331.56930357
Send Native Toke...167645852023-03-05 20:31:47575 days ago1678048307IN
0xE9ced91b...9bF8273aE
4.8 ETH0.0017410429.82826427
Send Native Toke...167481912023-03-03 13:10:47578 days ago1677849047IN
0xE9ced91b...9bF8273aE
1.76 ETH0.0011154922.22770031
Send Native Toke...167436832023-03-02 21:57:59578 days ago1677794279IN
0xE9ced91b...9bF8273aE
10.58 ETH0.0020391721.27841029
Send Native Toke...167269882023-02-28 13:35:23581 days ago1677591323IN
0xE9ced91b...9bF8273aE
10.265 ETH0.0040818428.8506115
Send Native Toke...167136752023-02-26 16:45:11582 days ago1677429911IN
0xE9ced91b...9bF8273aE
1.785 ETH0.0013317421.62027341
Send Native Toke...166984262023-02-24 13:15:59585 days ago1677244559IN
0xE9ced91b...9bF8273aE
3.2 ETH0.0015403832.15356007
Send Native Toke...166842982023-02-22 13:32:23587 days ago1677072743IN
0xE9ced91b...9bF8273aE
1.785 ETH0.0020645233.52315477
Send Native Toke...166699872023-02-20 13:14:47589 days ago1676898887IN
0xE9ced91b...9bF8273aE
1.785 ETH0.0026440142.92436301
Send Native Toke...166486422023-02-17 13:10:59592 days ago1676639459IN
0xE9ced91b...9bF8273aE
2.5 ETH0.0080600324.02709727
Send Native Toke...166343582023-02-15 13:12:23594 days ago1676466743IN
0xE9ced91b...9bF8273aE
0.32 ETH0.0018391938.39101093
Send Native Toke...165842852023-02-08 13:13:47601 days ago1675862027IN
0xE9ced91b...9bF8273aE
0.325 ETH0.001674327.1816323
Send Native Toke...165700452023-02-06 13:28:23603 days ago1675690103IN
0xE9ced91b...9bF8273aE
3.36 ETH0.0012023519.51968067
View all transactions

Latest 25 internal transactions (View All)

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Parent Transaction Hash Block From To
169553792023-04-01 16:07:23548 days ago1680365243
0xE9ced91b...9bF8273aE
1.6 ETH
169553792023-04-01 16:07:23548 days ago1680365243
0xE9ced91b...9bF8273aE
1.6 ETH
169553792023-04-01 16:07:23548 days ago1680365243
0xE9ced91b...9bF8273aE
1.6 ETH
169485112023-03-31 16:57:35549 days ago1680281855
0xE9ced91b...9bF8273aE
0.025 ETH
169485112023-03-31 16:57:35549 days ago1680281855
0xE9ced91b...9bF8273aE
0.16 ETH
169485112023-03-31 16:57:35549 days ago1680281855
0xE9ced91b...9bF8273aE
0.16 ETH
169485112023-03-31 16:57:35549 days ago1680281855
0xE9ced91b...9bF8273aE
0.32 ETH
169485112023-03-31 16:57:35549 days ago1680281855
0xE9ced91b...9bF8273aE
1.6 ETH
169152822023-03-27 0:52:47554 days ago1679878367
0xE9ced91b...9bF8273aE
0.025 ETH
169152822023-03-27 0:52:47554 days ago1679878367
0xE9ced91b...9bF8273aE
0.16 ETH
169008082023-03-25 0:06:11556 days ago1679702771
0xE9ced91b...9bF8273aE
1.6 ETH
169008082023-03-25 0:06:11556 days ago1679702771
0xE9ced91b...9bF8273aE
1.6 ETH
168782042023-03-21 19:52:59559 days ago1679428379
0xE9ced91b...9bF8273aE
0.8 ETH
168782042023-03-21 19:52:59559 days ago1679428379
0xE9ced91b...9bF8273aE
0.025 ETH
168782042023-03-21 19:52:59559 days ago1679428379
0xE9ced91b...9bF8273aE
0.16 ETH
168782042023-03-21 19:52:59559 days ago1679428379
0xE9ced91b...9bF8273aE
1.6 ETH
168659392023-03-20 2:33:47561 days ago1679279627
0xE9ced91b...9bF8273aE
0.8 ETH
168659392023-03-20 2:33:47561 days ago1679279627
0xE9ced91b...9bF8273aE
0.025 ETH
168495062023-03-17 19:08:35563 days ago1679080115
0xE9ced91b...9bF8273aE
0.075 ETH
168495062023-03-17 19:08:35563 days ago1679080115
0xE9ced91b...9bF8273aE
0.075 ETH
168495062023-03-17 19:08:35563 days ago1679080115
0xE9ced91b...9bF8273aE
0.075 ETH
168495062023-03-17 19:08:35563 days ago1679080115
0xE9ced91b...9bF8273aE
0.05 ETH
168495062023-03-17 19:08:35563 days ago1679080115
0xE9ced91b...9bF8273aE
0.05 ETH
168495062023-03-17 19:08:35563 days ago1679080115
0xE9ced91b...9bF8273aE
0.05 ETH
168495062023-03-17 19:08:35563 days ago1679080115
0xE9ced91b...9bF8273aE
0.05 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
MetaSender

Compiler Version
v0.8.17+commit.8df45f5f

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
File 1 of 8 : MetaSender.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/interfaces/IERC20.sol";
import "@openzeppelin/contracts/interfaces/IERC721.sol";

/// @title Metasender Protocol a MULTI-TRANSFER project
/// @notice A protocol to send bulk of Transaction compatible with ERC20 and ERC721

contract MetaSender is Ownable {

    /**************************************************************/
    /****************** PALCO MEMBERS and FEEs ********************/

    //// @notice PALCO members ( free Transactions )
    mapping(address => bool) public PALCO;

    //// @notice cost per transaction
    uint256 public txFee = 0.0075 ether;

    //// @notice cost to become a PALCO Member
    uint256 public PALCOPass = 1 ether;

    /**************************************************************/
    /*************************** EVENTS ***************************/

    /// @param  newPALCOMember address of the new PALCO member
    event NewPALCOMember( address newPALCOMember );

    /// @param  addressToRemove address of a PALCO member
    event RemoveToPALCO( address addressToRemove );

    /// @param  newPALCOPass value of new transaction Fee
    event SetPALCOPass( uint256 newPALCOPass );

    /// @param  newTxFee value of new transaction Fee
    event SetTxFee( uint256 newTxFee );

    /// @param  from address of the user
    /// @param  amount transferred amount
    event LogNativeTokenBulkTransfer( address from, uint256 amount);

    /// @param  contractAddress token contract address
    /// @param  amount transferred amount
    event LogTokenBulkTransfer( address contractAddress, uint amount);

    /// @param  contractAddress token contract address
    /// @param  amount withdraw amount
    event WithDrawERC20( address contractAddress, uint256 amount );

    /// @param  owner owner address
    /// @param  amount withdrawn value
    event WithdrawTxFee( address owner, uint256 amount );

    constructor() {

        PALCO[msg.sender] = true;

    }

    /**************************************************************/
    /************************ SET AND GET *************************/

    //// @notice it returns true if a user is on the palco
    //// @param _address the address of the required user
    function isOnPALCO( address _address) public view returns (bool) {

        return PALCO[ _address ];

    }

    //// @notice it adds a new PALCO member
    //// @param _address the address of the new PALCO Member
    function addToPALCO( address _address) external payable {

        require(msg.value >= PALCOPass, "Can't add: Value must be equal or superior of current PALCO fee");

        require( !PALCO[_address] , "Can't add: The address is already a PALCO member");

        PALCO[_address] = true;

        emit NewPALCOMember( _address );

    }

    //// @notice it remove a PALCO Member only owner can access
    //// @param _address address of PALCO Member
    function removeToPALCO( address _address) onlyOwner external {

        require( PALCO[_address], "Can't Delete: User not exist");

        delete PALCO[_address];

        emit RemoveToPALCO( _address );
        
    }

    //// @notice change PALCO membership cost
    //// @param _newTxFee the new PALCO membership cost
    function setPALCOPass( uint256 _newPALCOPass ) onlyOwner external  {

        PALCOPass = _newPALCOPass;

        emit SetPALCOPass( _newPALCOPass );
        
    }

    //// @notice change the Transaction cost
    //// @param _newTxFee the new Transaction cost
    function setTxFee( uint256 _newTxFee ) onlyOwner external  {

        txFee = _newTxFee;

        emit SetTxFee( _newTxFee );

    }

    //// @notice returns total value of passed amount array
    //// @param _value a array with transfer amounts
    function getTotalValue(uint256[] memory _value) private pure returns (uint256) {

        uint256 _amount;

        for (uint256 i = 0; i < _value.length; i++) {

            _amount += _value[i];

        }

        require(_amount > 0);

        return _amount;

    }

    //// @notice returns the required transfer Bulk cost
    //// @param _value the initial value
    //// @param _requiredValue value depending of transaction fee
    function getTransactionCost( uint256 _value, uint256 _requiredValue) private view returns(uint256) {

        uint remainingValue = _value;

        if ( isOnPALCO( msg.sender )) require( remainingValue >= _requiredValue, "Invalid Value: The value is less than required");

        else {

            require( remainingValue >= _requiredValue + txFee, "Invalid Value: The value is less than required");

            remainingValue -= txFee;

        }

        return remainingValue;

    }

    /*************************************************************/
    /*************** MULTI-TRANSFER FUNCTIONS ********************/

    //// @notice ETH MULTI-TRANSFER transactions with same value
    //// @param _to array of receiver addresses
    //// @param _value amount to transfer
    function sendNativeTokenSameValue(address[] memory _to, uint256 _value) external payable{

        require(_to.length <= 255, "Invalid Arguments: Max 255 transactions by batch");

        uint256 totalValue = _to.length * _value;

        uint256 remainingValue = getTransactionCost( msg.value, totalValue );

        for (uint256 i = 0; i < _to.length; i++) {

            remainingValue -= _value;

            require(payable(_to[i]).send(_value), "Transfer failed");

        }

        if (remainingValue > 0) payable(msg.sender).transfer(remainingValue);

        emit LogNativeTokenBulkTransfer( msg.sender, totalValue );

    }

    //// @notice ETH MULTI-TRANSFER transaction with different value
    //// @param _to array of receiver addresses
    //// @param _value array of amounts to transfer
    function sendNativeTokenDifferentValue( address[] memory _to, uint256[] memory _value) external payable {

        require( _to.length == _value.length, "Invalid Arguments: Addresses and values must be equal" );

        require( _to.length <= 255, "Invalid Arguments: Max 255 transactions by batch" );

        uint256 totalValue = getTotalValue( _value );

        uint256 remainingValue = getTransactionCost( msg.value, totalValue );

        for (uint256 i = 0; i < _to.length; i++) {

            remainingValue -= _value[i];

            require( payable(_to[i]).send(_value[i]), "Transfer failed" );

        }

        if (remainingValue > 0) payable(msg.sender).transfer(remainingValue);

        emit LogNativeTokenBulkTransfer( msg.sender, totalValue);
    }

    //// @notice MULTI-TRANSFER ERC20 Tokens with different value
    //// @param _contractAddress Token contract address
    //// @param _to array of receiver addresses
    //// @param _value amount to transfer
    function sendERC20SameValue( address _contractAddress, address[] memory _to, uint256 _value) payable external{

        require( _to.length <= 255, "Invalid Arguments: Max 255 transactions by batch" );

        getTransactionCost( msg.value, 0);

        IERC20 Token = IERC20(_contractAddress);

        for(uint256 i = 0; i < _to.length; i++){

            require(Token.transferFrom(msg.sender, _to[i], _value), 'Transfer failed');

        }

        emit LogTokenBulkTransfer( _contractAddress, _to.length * _value);

    }

    //// @notice MULTI-TRANSFER ERC20 Tokens with different value
    //// @param _contractAddress Token contract address
    //// @param _to array of receiver addresses
    //// @param _value array of amounts to transfer
    function sendERC20DifferentValue( address _contractAddress, address[] memory _to, uint256[] memory _value) payable external{

        require( _to.length == _value.length, "Invalid Arguments: Addresses and values must be equal" );

        require( _to.length <= 255, "Invalid Arguments: Max 255 transactions by batch" );

        getTransactionCost( msg.value, 0);

        IERC20 Token = IERC20(_contractAddress);

        for(uint256 i = 0; i < _to.length; i++){

            require(Token.transferFrom(msg.sender, _to[i], _value[i]), 'Transfer failed');

        }

        emit LogTokenBulkTransfer( _contractAddress, getTotalValue(_value));

    }

    //// @notice MULTI-TRANSFER ERC721 Tokens with different value
    //// @param _contractAddress Token contract address
    //// @param _to array of receiver addresses
    //// @param _tokenId array of token Ids to transfer
    function sendERC721( address _contractAddress, address[] memory _to, uint256[] memory _tokenId) payable external{

        require( _to.length == _tokenId.length, "Invalid Arguments: Addresses and values must be equal" );

        require( _to.length <= 255, "Invalid Arguments: Max 255 transactions by batch" );

        getTransactionCost( msg.value, 0);

        IERC721 Token = IERC721(_contractAddress);

        for(uint256 i = 0; i < _to.length; i++){

            Token.transferFrom(msg.sender, _to[i], _tokenId[i]);
            
        }

        emit LogTokenBulkTransfer( _contractAddress, _tokenId.length );

    }

    /**************************************************************/
    /********************* WITHDRAW FUNCTIONS *********************/

    //// @notice withdraw a ERC20 tokens
    //// @param _address token contract address
    function withDrawERC20( address _address ) onlyOwner external  {

        IERC20 Token = IERC20( _address );

        uint256 balance = Token.balanceOf(address(this));

        require(balance > 0, "Can't withDraw: insufficient founds");

        Token.transfer(owner(), balance);

        emit WithDrawERC20( _address, balance );

    } 

    //// @notice withdraw Fees and memberships
    function withdrawTxFee() onlyOwner external{

        uint256 balance = address(this).balance;

        require(balance > 0, "Can't withDraw: insufficient founds");

        payable(owner()).transfer(balance);

        emit WithdrawTxFee( owner(), balance );

    }

}

File 2 of 8 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract 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() {
        _transferOwnership(_msgSender());
    }

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

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        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 {
        _transferOwnership(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");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 3 of 8 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/IERC20.sol";

File 4 of 8 : IERC721.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC721.sol)

pragma solidity ^0.8.0;

import "../token/ERC721/IERC721.sol";

File 5 of 8 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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);

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

File 6 of 8 : IERC721.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

File 7 of 8 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

File 8 of 8 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

Settings
{
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"LogNativeTokenBulkTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"contractAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"LogTokenBulkTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newPALCOMember","type":"address"}],"name":"NewPALCOMember","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":"addressToRemove","type":"address"}],"name":"RemoveToPALCO","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newPALCOPass","type":"uint256"}],"name":"SetPALCOPass","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newTxFee","type":"uint256"}],"name":"SetTxFee","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"contractAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"WithDrawERC20","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"WithdrawTxFee","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"PALCO","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PALCOPass","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"addToPALCO","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"isOnPALCO","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"removeToPALCO","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_contractAddress","type":"address"},{"internalType":"address[]","name":"_to","type":"address[]"},{"internalType":"uint256[]","name":"_value","type":"uint256[]"}],"name":"sendERC20DifferentValue","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_contractAddress","type":"address"},{"internalType":"address[]","name":"_to","type":"address[]"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"sendERC20SameValue","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_contractAddress","type":"address"},{"internalType":"address[]","name":"_to","type":"address[]"},{"internalType":"uint256[]","name":"_tokenId","type":"uint256[]"}],"name":"sendERC721","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_to","type":"address[]"},{"internalType":"uint256[]","name":"_value","type":"uint256[]"}],"name":"sendNativeTokenDifferentValue","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_to","type":"address[]"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"sendNativeTokenSameValue","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newPALCOPass","type":"uint256"}],"name":"setPALCOPass","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newTxFee","type":"uint256"}],"name":"setTxFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"txFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"withDrawERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawTxFee","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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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.