Contract 0x21be370D5312f44cB42ce377BC9b8a0cEF1A4C83 12

Contract Overview

Fantom Finance: Wrapped Fantom Token
Balance:
572,763,976.639685804150005913 FTM

FTM Value:
$198,978,205.48 (@ $0.35/FTM)

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x132e4c9af1b715271c3df0adb4f32ec5400c3cdda261932e391856435873cda2Approve385931892022-05-19 15:23:2136 secs ago0x2dc6f49277a5af0c30929576a20f265f543dddac IN  Fantom Finance: Wrapped Fantom Token0 FTM0.010395803986
0x9128ae839958dde0006a8b08c99cfac7374b1497041fe6b3e8363688c62cda5fDeposit385931552022-05-19 15:22:361 min ago0x7c17751ae1d8a65cc51752894b54bd2b7f073651 IN  Fantom Finance: Wrapped Fantom Token34,548.98063594338 FTM0.009613990008
0xa08ac6de30e0dcfa820a629a1809eaf7df35e6c0e612e29330450157278d3d00Approve385931502022-05-19 15:22:301 min ago0xab563194b2a15cbbbf7d991d162a153f736b13b7 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.010416177006
0x785949cd73ce45cf7fdfede70cd87e5f817bc08be6fcdc9d99565a93bb208ec8Deposit385931162022-05-19 15:21:552 mins ago0x2dc6f49277a5af0c30929576a20f265f543dddac IN  Fantom Finance: Wrapped Fantom Token7,000 FTM0.011003131588
0x6cf3a3295f7f19ce6cd719a27eaebef53c109c18eef00f06597c2a55aaded629Withdraw385930012022-05-19 15:19:464 mins ago0x7c17751ae1d8a65cc51752894b54bd2b7f073651 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.020333935544
0xaaa17fa833f04d9975ed1af38a7ede037e342b54e9393371c4a5642abadbd4cbWithdraw385929842022-05-19 15:19:174 mins ago0x7c17751ae1d8a65cc51752894b54bd2b7f073651 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.020333935544
0x4c90fff3a813ef6eac7002fd16a4b9eed8d35f302e5364c31c255ab01aacdaa6Withdraw385929502022-05-19 15:18:245 mins ago0x96783cfd992c23e26d3ac77673b2c2d9438a2501 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.007947070102
0xd36e594db8890f1998bcc75bd9b5658c58be27ae90956bf8102d3b2948f451e9Approve385928502022-05-19 15:16:307 mins ago0xd96d523fe259912ddf58b9744aebb2ace5d0df81 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.010678704246
0xc005585755038081360af0a07bcceabae8a4c077781abb49186af25b4e709588Approve385928272022-05-19 15:16:007 mins ago0xbbd048f7459ab98acb8f529a302fb71a7d86eae8 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.009524137571
0x0bceb739391d4aa8a0c8d2c82ffbbc96b8d5bbc0edcea12c8059ee9ae832354eApprove385928012022-05-19 15:15:298 mins ago0x981ab0d817710d8fffc5693383c00d985a3bda38 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.0096734
0x85956bba65b8cc3c9b31b9d1f7cd4fa7431b3935a30eb41347c454826c94b0f1Approve385927402022-05-19 15:14:179 mins ago0x389ef0f330bd149486d44c2171dfa5be2ba3f48d IN  Fantom Finance: Wrapped Fantom Token0 FTM0.006692303407
0x256f0e03570f805c9ecbe9c432aca1351fe9223868fe11cffa8f14b1982a3b5aDeposit385927202022-05-19 15:13:589 mins ago0x389ef0f330bd149486d44c2171dfa5be2ba3f48d IN  Fantom Finance: Wrapped Fantom Token33 FTM0.013912344
0x45f2f65d36f3e3f94c60003b6d07208136de5a1cb3f2f9c1ca7337f7fee195b3Approve385927022022-05-19 15:13:4010 mins ago0x981ab0d817710d8fffc5693383c00d985a3bda38 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.010385787765
0x7ee4d3c4e1dea6e91392e74dea2d8ce7a96fd6c1450a8d711e1dc7b18008da88Withdraw385926562022-05-19 15:12:5211 mins ago0xe6acad7265b4b7e498cb019c6f973bf1dc6abbad IN  Fantom Finance: Wrapped Fantom Token0 FTM0.010308485
0x1dabceb80247d28d9627affd75dd6ea5351ea430c9540bf8aa46537253991f91Withdraw385926392022-05-19 15:12:3411 mins ago0x4728f3ac417f40a7c3a78b107eb77b8ea6a5ed3f IN  Fantom Finance: Wrapped Fantom Token0 FTM0.007921904736
0x33c5ec35754eaac3f30b2d2105b350b59b38db9cde933efa65e432426f6dd579Transfer385926052022-05-19 15:11:5811 mins ago0x6e1110d61e205557c5e79124978389c1108cd4e1 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.032862
0x5140ba30d4f7f0ebb89eea7772c3ab94e4ab4d7ad83c7c7d8f993b52c1ad46bfWithdraw385925642022-05-19 15:10:5713 mins ago0x83652856fc0431f6f735fdb271c468d0dd41fd4c IN  Fantom Finance: Wrapped Fantom Token0 FTM0.020864787547
0xfd98f489f6e83cf7aa5430ace250884975c76ef1e7c3e09ae71e9e9c64e94555Deposit385925532022-05-19 15:10:4713 mins ago0x6e1110d61e205557c5e79124978389c1108cd4e1 IN  Fantom Finance: Wrapped Fantom Token200,000 FTM0.052777
0xd86aec272c5255dc95beb065d72d103243bacc061d305954a8a707db44edee45Withdraw385924912022-05-19 15:09:4314 mins ago0x5d102c82e0a389a62e915042550b957542c288aa IN  Fantom Finance: Wrapped Fantom Token0 FTM0.007694
0x530b44996fd3e7062dbf9422ec6e08e9e1f4487c40a6879fb2bb2cc45b30be10Approve385924782022-05-19 15:09:3114 mins ago0x9294b95b014c32a3a92db2f11c56486b74b0189c IN  Fantom Finance: Wrapped Fantom Token0 FTM0.010906460326
0xc52ac91f508d93f1c7ceec574f957c15c3f10347b74694aa415f1a70bf548c86Increase Allowan...385924632022-05-19 15:09:1614 mins ago0x99b6a44fa3d3e0d3f33464ffac5710f31c3db580 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.0047262
0x7be6a1e809eb6207fb70155f5a82381f4ef0f5be58007e368316ef8916a7aacaApprove385924322022-05-19 15:08:3815 mins ago0x4ac41fd97c843b7c3de97773143231b3971e7540 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.010562659866
0x5f25b9e03826484bb51aade290328e0407d9b7470eafb4115745e3b65d9b2f91Deposit385924282022-05-19 15:08:3515 mins ago0xb896d3e933a726c8af321f468b75e3da042b6f63 IN  Fantom Finance: Wrapped Fantom Token1.8 FTM0.010936404226
0x823bef5f96c771b45d582352de68716afbc91c4a0be40f8eec41c138daa9ea3bDeposit385923002022-05-19 15:06:1117 mins ago0x1f2066839072a339e3f2e15b4c445ab494f34e9e IN  Fantom Finance: Wrapped Fantom Token10 FTM0.00791655
0xca1dd2cce9fc85c2178e05406d09de2e3dc12b6a47b4ae9a5176c843a3838b67Deposit385922962022-05-19 15:06:0717 mins ago0x6288f2e40029f6c4a8eca6da85e109f482d4bbc8 IN  Fantom Finance: Wrapped Fantom Token100 FTM0.012063158242
[ Download CSV Export 
Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x21be7b44366f2ec1925c29fb588a3c40231add08086f2edfea107764bbbdd31a385932122022-05-19 15:23:4512 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token4,000 FTM
0xd6b5e7bfb8bd6d7b6f19e2357c5c10a57b0a45eaf0f16c2eb33b0cc1c40753a9385932092022-05-19 15:23:4017 secs ago Fantom Finance: Wrapped Fantom Token 0x477cd11433558967fa47dc5d25427a3741375acc1.937804640537680412 FTM
0x23d8d38f1f56fa7f69f6d6994aecadecb685394a28a1d7a946b22547fe30b5f3385932052022-05-19 15:23:3621 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token610 FTM
0x28e233baddaee754974d478b536d48b4ca8a90fd1cae2d60e555485fde7149a5385932032022-05-19 15:23:3423 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token90.226558158002420275 FTM
0xc15cc8c6e9f43e81929ed2d94b178532ed5c7d71c787274eb1f9aedcc03b2329385932032022-05-19 15:23:3423 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token50 FTM
0x81e04dc3dfde4946519dc42e923ef015f388e351fef46937adb0d2e986a79236385932012022-05-19 15:23:3324 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router2,677.969615021855867899 FTM
0x3a91f0640ee9ab5dd8a0f8785a8ed728367f1f095d19096d7a3f0ba8db02894d385932002022-05-19 15:23:3225 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token70.369358379878538894 FTM
0x3a91f0640ee9ab5dd8a0f8785a8ed728367f1f095d19096d7a3f0ba8db02894d385932002022-05-19 15:23:3225 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token70.369358379878538893 FTM
0x3a91f0640ee9ab5dd8a0f8785a8ed728367f1f095d19096d7a3f0ba8db02894d385932002022-05-19 15:23:3225 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router140.738716759757077787 FTM
0x856da2d8a8b365b81c1587193c1962ecc1ec24d58c0ed4af2ba6cdab1f3fdaf2385931992022-05-19 15:23:3126 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token112.490437318922414183 FTM
0x11f66de2366bf25628d42ced3086359d80461319be82ebcf017ff3ab39d7434c385931992022-05-19 15:23:3126 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token32.901 FTM
0x10db778c6c5cba29691d4a6822de0227494b91ebc3369e2a7b49e7b02ea1a2a8385931972022-05-19 15:23:2928 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token5,500 FTM
0x63b93ec68e36691fdc277b4aa6044c8dc45c9a2e56a4d65fd1cc86c408c0ee98385931932022-05-19 15:23:2532 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token572 FTM
0xd637b861e1773096c67521f55032187de34420bfad4d1784591d55214435491a385931922022-05-19 15:23:2433 secs ago Fantom Finance: Wrapped Fantom Token ProtoFi: Router1.420977029319091117 FTM
0x52f95eef8567b4e042c032a0518665fea1ebe9d4111891d1f7e5b6305824809a385931922022-05-19 15:23:2433 secs ago Fantom Finance: Wrapped Fantom Token 0x6d0176c5ea1e44b08d3dd001b0784ce42f47a3a713.334153565982712104 FTM
0x66389ba2d6f04a72557b5df6417ae48e239a87854d5ba41ad5eacfe85cc50c36385931922022-05-19 15:23:2433 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token50 FTM
0xfb5e0981c3e6bb272eee14a16a8e1431f3234f7181be7cc59c4144cfe730ad5a385931892022-05-19 15:23:2136 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token21.341685453074014766 FTM
0xfb5e0981c3e6bb272eee14a16a8e1431f3234f7181be7cc59c4144cfe730ad5a385931892022-05-19 15:23:2136 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token21.38425917263405387 FTM
0xfb5e0981c3e6bb272eee14a16a8e1431f3234f7181be7cc59c4144cfe730ad5a385931892022-05-19 15:23:2136 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router42.76851834526810774 FTM
0xb404200e6f9706c5d108f954418fb1717285bec3c9e76aad485c4e340ed31a3f385931882022-05-19 15:23:2037 secs ago 0x6d0176c5ea1e44b08d3dd001b0784ce42f47a3a7 Fantom Finance: Wrapped Fantom Token1.013501048275342037 FTM
0xaf2b490e9d21e9a6ec6676b03ed9a26b4edeba4da05563b32d260c90a2447e58385931842022-05-19 15:23:1641 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router47.368617903401960512 FTM
0x6a0444344d266edd6b9c1522bf5b4374982973fafbd5a0920606058077aac361385931832022-05-19 15:23:1641 secs ago Fantom Finance: Wrapped Fantom Token WigoSwap: Router1,361.604404081445952197 FTM
0x8088b122c7d14fe0bffaf2a1d880765ed0126ea499078026b12f58b495c6b6d5385931802022-05-19 15:23:1344 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router697.816242483643148061 FTM
0x27adf37d4279aa22c6686991eac5591d8f177814e3a27aa7d74e0b2428e04f4d385931782022-05-19 15:23:1146 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token5.992818714886839137 FTM
0xd4f2177c0048d2ef7fe6c51bc94cdf7f5c32c2df217e378c1fa7e223fdde919a385931772022-05-19 15:23:1047 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router25.250770866631743949 FTM
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Contract Source Code Verified (Exact Match)

Contract Name:
WrappedFtm

Compiler Version
v0.5.17+commit.d19bba13

Optimization Enabled:
Yes with 5000000 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at FtmScan.com on 2021-02-19
*/

pragma solidity ^0.5.0;

contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor () internal { }
    // solhint-disable-previous-line no-empty-blocks

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

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

library Roles {
    struct Role {
        mapping (address => bool) bearer;
    }

    /**
     * @dev Give an account access to this role.
     */
    function add(Role storage role, address account) internal {
        require(!has(role, account), "Roles: account already has role");
        role.bearer[account] = true;
    }

    /**
     * @dev Remove an account's access to this role.
     */
    function remove(Role storage role, address account) internal {
        require(has(role, account), "Roles: account does not have role");
        role.bearer[account] = false;
    }

    /**
     * @dev Check if an account has this role.
     * @return bool
     */
    function has(Role storage role, address account) internal view returns (bool) {
        require(account != address(0), "Roles: account is the zero address");
        return role.bearer[account];
    }
}

contract PauserRole is Context {
    using Roles for Roles.Role;

    event PauserAdded(address indexed account);
    event PauserRemoved(address indexed account);

    Roles.Role private _pausers;

    constructor () internal {
        _addPauser(_msgSender());
    }

    modifier onlyPauser() {
        require(isPauser(_msgSender()), "PauserRole: caller does not have the Pauser role");
        _;
    }

    function isPauser(address account) public view returns (bool) {
        return _pausers.has(account);
    }

    function addPauser(address account) public onlyPauser {
        _addPauser(account);
    }

    function renouncePauser() public {
        _removePauser(_msgSender());
    }

    function _addPauser(address account) internal {
        _pausers.add(account);
        emit PauserAdded(account);
    }

    function _removePauser(address account) internal {
        _pausers.remove(account);
        emit PauserRemoved(account);
    }
}

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

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

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state. Assigns the Pauser role
     * to the deployer.
     */
    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 Called by a pauser to pause, triggers stopped state.
     */
    function pause() public onlyPauser whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Called by a pauser to unpause, returns to normal state.
     */
    function unpause() public onlyPauser whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

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.
     *
     * _Available since v2.4.0._
     */
    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.
     *
     * _Available since v2.4.0._
     */
    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.
     *
     * _Available since v2.4.0._
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

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);
}

contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20};
     *
     * Requirements:
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for `sender`'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 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);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 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);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 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);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
     *
     * This is internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 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);
    }

    /**
     * @dev Destroys `amount` tokens from `account`.`amount` is then deducted
     * from the caller's allowance.
     *
     * See {_burn} and {_approve}.
     */
    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "ERC20: burn amount exceeds allowance"));
    }
}

contract ERC20Detailed is IERC20 {
    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of
     * these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name, string memory symbol, uint8 decimals) public {
        _name = name;
        _symbol = symbol;
        _decimals = decimals;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }
}

contract ERC20Pausable is ERC20, Pausable {
    function transfer(address to, uint256 value) public whenNotPaused returns (bool) {
        return super.transfer(to, value);
    }

    function transferFrom(address from, address to, uint256 value) public whenNotPaused returns (bool) {
        return super.transferFrom(from, to, value);
    }

    function approve(address spender, uint256 value) public whenNotPaused returns (bool) {
        return super.approve(spender, value);
    }

    function increaseAllowance(address spender, uint256 addedValue) public whenNotPaused returns (bool) {
        return super.increaseAllowance(spender, addedValue);
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public whenNotPaused returns (bool) {
        return super.decreaseAllowance(spender, subtractedValue);
    }
}

contract WrappedFtm is ERC20, ERC20Detailed, ERC20Pausable {
    // Error Code: No error.
    uint256 public constant ERR_NO_ERROR = 0x0;

    // Error Code: Non-zero value expected to perform the function.
    uint256 public constant ERR_INVALID_ZERO_VALUE = 0x01;

    // create instance of the wFTM token
    constructor () public ERC20Detailed("Wrapped Fantom", "WFTM", 18) {
    }

    // deposit wraps received FTM tokens as wFTM in 1:1 ratio by minting
    // the received amount of FTMs in wFTM on the sender's address.
    function deposit() public whenNotPaused payable returns (uint256) {
        // there has to be some value to be converted
        if (msg.value == 0) {
            return ERR_INVALID_ZERO_VALUE;
        }

        // we already received FTMs, mint the appropriate amount of wFTM
        _mint(msg.sender, msg.value);

        // all went well here
        return ERR_NO_ERROR;
    }

    // withdraw unwraps FTM tokens by burning specified amount
    // of wFTM from the caller address and sending the same amount
    // of FTMs back in exchange.
    function withdraw(uint256 amount) public whenNotPaused returns (uint256) {
        // there has to be some value to be converted
        if (amount == 0) {
            return ERR_INVALID_ZERO_VALUE;
        }

        // burn wFTM from the sender first to prevent re-entrance issue
        _burn(msg.sender, amount);

        // if wFTM were burned, transfer native tokens back to the sender
        msg.sender.transfer(amount);

        // all went well here
        return ERR_NO_ERROR;
    }
}

Contract Security Audit

Contract ABI

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Swarm Source

bzzr://5aa4bd727a32addbd7562837838048136c5d3570e72e58054c8b7b09443fe6ca
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Validator ID :
0 FTM

Amount Staked
0

Amount Delegated
0

Staking Total
0

Staking Start Epoch
0

Staking Start Time
0

Proof of Importance
0

Origination Score
0

Validation Score
0

Active
0

Online
0

Downtime
0 s
Address Amount claimed Rewards Created On Epoch Created On
Block Uncle Number Difficulty Gas Used Reward
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