Contract 0x21be370d5312f44cb42ce377bc9b8a0cef1a4c83 12

Contract Overview

Fantom Finance: Wrapped Fantom Token
Balance:
590,614,411.941981230398465951 FTM

FTM Value:
$205,720,703.47 (@ $0.35/FTM)

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xaf72e18beba6376d422d8716f3a052b9dccd3490f6455f8b256df538118456bfWithdraw384856282022-05-18 3:47:343 mins ago0xf7aff8e3ffee3dfa001a85af07c197f60dfb3e7d IN  Fantom Finance: Wrapped Fantom Token0 FTM0.0368516
0x32ecea67619058255596994d22d1628821c7c61692106b2cdb98d228f93dbb09Increase Allowan...384855602022-05-18 3:46:164 mins ago0x8506f1ef8467d82dcf6a31969faee8539892fba1 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.029459076297
0x5f67507b30aec4528de63ad4b8e787b69d12d0c8023b58b6fba6eb77be137de8Deposit384855102022-05-18 3:45:215 mins ago0x8506f1ef8467d82dcf6a31969faee8539892fba1 IN  Fantom Finance: Wrapped Fantom Token11.1712876046607 FTM0.031967502765
0xd53b12920527361f602f286a86b4f69a37127dbd312840d82c9c1fbf5453f276Withdraw384855092022-05-18 3:45:205 mins ago0xe5d4fb304a37926e04831b22fc6afe931557c883 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.017038828647
0xff24ccc2dc8de7e8f8245d9ed11e99c6e5b5f04cded3171f6e3e6a0ecb9aee2cWithdraw384855062022-05-18 3:45:165 mins ago0xe5d4fb304a37926e04831b22fc6afe931557c883 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.023071365376
0xff6dee0110f10c922235cb080b1f4882a37cfec615696808eec2a88862b6354fDeposit384853482022-05-18 3:42:148 mins ago0x4306dd0c18b58e34e587003841d736a449392d49 IN  Fantom Finance: Wrapped Fantom Token106.309959267662741 FTM0.02140380678
0x441f1337d6832e07bcabd9769a143597b75d573153e40e1a30ffd169e0e5bce5Deposit384851722022-05-18 3:39:0011 mins ago0x83652856fc0431f6f735fdb271c468d0dd41fd4c IN  Fantom Finance: Wrapped Fantom Token9,999.932951881388 FTM0.052822130479
0xbfc246f0caa529915fcd89cf2a0b177267d68103298cedd0c639213fe7518fb9Deposit384851542022-05-18 3:38:4311 mins ago0x7c17751ae1d8a65cc51752894b54bd2b7f073651 IN  Fantom Finance: Wrapped Fantom Token46,991.711841594257661 FTM0.035766331875
0x988078d0611af98717f56281e03199448040f4a74cefb1aa746dad210438c570Deposit384851182022-05-18 3:38:0012 mins ago0xedb7523277d041ffea5a736fb2149c13dafce815 IN  Fantom Finance: Wrapped Fantom Token2,000 FTM0.034828773896
0x85caf745caf9fc17e1c3a73b037e042e0a22b824fcbfb9250598c1bf44497c1fTransfer384844962022-05-18 3:26:2524 mins ago0xd130df752480351baf5e73ffa12cc5d245a879af IN  Fantom Finance: Wrapped Fantom Token0 FTM0.076972
0x50469d6ad9e2db2549c38a1e7d17cdd9e30d79209eb9c7562783e94a7574ddcdApprove384844202022-05-18 3:24:4825 mins ago0xb9de72595b0ee934c326b391dfc28c1acd28a445 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.035680005149
0xc470024b6a9cafad2f0233318ea6ea7c43a0b84aad53272f54455e8d16551639Withdraw384843912022-05-18 3:24:1026 mins ago0x7a70ea21e80747d5fe7d95e4001dc2d492d3ceee IN  Fantom Finance: Wrapped Fantom Token0 FTM0.043809382896
0x6a2c30ba9383f24e92c6a5c969f12c4140959e1c749ce0ef88d4309a7d9772daWithdraw384841572022-05-18 3:17:1233 mins ago0x16c5d7862f5e42b578c5b86bdf1f3887fdc0f412 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.025629024115
0xd65cdac2578a8e09d079ac511f65d78f90be00ef66021277226f3c66e857ef56Deposit384841442022-05-18 3:17:0033 mins ago0x7c17751ae1d8a65cc51752894b54bd2b7f073651 IN  Fantom Finance: Wrapped Fantom Token51,108.545411565390095 FTM0.042828788271
0xfacbb4104530e254f4b7d692f8a01be16d7a628988bef3c80ec29c958064d815Withdraw384841272022-05-18 3:16:4034 mins ago0xc75811a2ec36214ec940190b7336a689dad9ff7b IN  Fantom Finance: Wrapped Fantom Token0 FTM0.025635610313
0x603458d86f8014c290393f8940d6e4c8fa3a892c27e4aa0f911be1e51fae071bDeposit384841192022-05-18 3:16:3034 mins ago0x83652856fc0431f6f735fdb271c468d0dd41fd4c IN  Fantom Finance: Wrapped Fantom Token9,999.628525103064 FTM0.05704811861
0xf9b1c63d334044cff7a5a5f492f12f7bf9496f587baa6b66d1acadedd400e6d2Withdraw384840752022-05-18 3:15:3435 mins ago0xda795c81d90b2d146e083d66bcce81d02202e1bb IN  Fantom Finance: Wrapped Fantom Token0 FTM0.027354309914
0xaed21c1ede0e946b67e5147723e66ca9ba6f73a8676cff6a96facba4b747deb8Deposit384840272022-05-18 3:14:4236 mins ago0x7c17751ae1d8a65cc51752894b54bd2b7f073651 IN  Fantom Finance: Wrapped Fantom Token46,537.34166107123636 FTM0.031792295
0xa8f9439cb1dd5fd7aa86fa3a7da50ed779f912a4c5ccfa276cadb7b095676a34Withdraw384840092022-05-18 3:14:2336 mins ago0xf39e8f598b457e278c82f1e19dd1337ed33742df IN  Fantom Finance: Wrapped Fantom Token0 FTM0.030728430966
0xcf6301e115040d52507778b7af0332766a88325ab529c54157eb0164ff1aad4dTransfer384839042022-05-18 3:12:1938 mins ago0x43dd5faf6be7f39fac3edc90b9bad6f71fe1171a IN  Fantom Finance: Wrapped Fantom Token0 FTM0.026410232934
0x8a098a3acb34c045e8eb40718ab5b4c27e5c22a18b742d08b6cb070ce1619c75Withdraw384838992022-05-18 3:12:1338 mins agoRoosh IN  Fantom Finance: Wrapped Fantom Token0 FTM0.066428403284
0x19f6f2a1cf00548d9d31dc54b765663b239976ee4cff6175fff09cd2128fed22Deposit384836122022-05-18 3:06:3644 mins ago0x7c17751ae1d8a65cc51752894b54bd2b7f073651 IN  Fantom Finance: Wrapped Fantom Token49,988.935922250502862 FTM0.046409544142
0x046196bfdd32912db8f409b6d9a0882ef169172335ad02cf849748c8324f1f5bWithdraw384835942022-05-18 3:06:1744 mins ago0xafda97ec9e7e2a0ab53f5967a4891bd82d518ccf IN  Fantom Finance: Wrapped Fantom Token0 FTM0.029298563772
0x1998f0caa123d0e1a43beac371f9fd2f5b48b5da9d1b8ad873eb25413d818398Withdraw384835602022-05-18 3:05:2845 mins ago0xfedd39e87c17fe08264d93f4f599ccc6b2846ddc IN  Fantom Finance: Wrapped Fantom Token0 FTM0.026977457032
0x1d50e43c968a3ae1f675a3aa898caf4c3d766f8868237fbace4ea342a26b2f03Approve384835452022-05-18 3:05:0645 mins ago0x4667b3d4e00855f5e5467e403a47370e1fc4de68 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.03522103608
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xfb55a5686d92930deb73eb76561b1a21884f5d1b399c7f540b9d8acd669c7faf384857692022-05-18 3:50:348 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token230 FTM
0x7047d9242d7e2dfe5a199326c4c3b1b69aac98dc41ed48d9e6bcf38bed1d3eed384857692022-05-18 3:50:348 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token5.036812357141335501 FTM
0x7554a3e0b5c1b4689abe6d5fcb276f5b2f30ecf0b58b3c22ef5c7e406d9dbc09384857672022-05-18 3:50:3012 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router131.7096617421277205 FTM
0x210d1371100c11133935f071d8ca9cd44ff76ceca7f13018a13a6769fb519d0a384857672022-05-18 3:50:3012 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router39.71660735618039599 FTM
0x673df9ed66abb9c1b695cdb5ac377f607a4bd47e6ee4910999ed8e1e557ccb60384857602022-05-18 3:50:1923 secs ago Fantom Finance: Wrapped Fantom Token 0x2e6628d552b86933a725f8613373e434efd2324f52.245041283172118034 FTM
0x673df9ed66abb9c1b695cdb5ac377f607a4bd47e6ee4910999ed8e1e557ccb60384857602022-05-18 3:50:1923 secs ago 0x2e6628d552b86933a725f8613373e434efd2324f Fantom Finance: Wrapped Fantom Token52 FTM
0xb0f0d29bc240b030d664dc5f23f1e53ed9b6d1bdd6340dbfca694206214bde6f384857602022-05-18 3:50:1923 secs ago 0xbd09504819a604ca503f30d2cc9d0ef4c76dac33 Fantom Finance: Wrapped Fantom Token82.427545654992545804 FTM
0xb0f0d29bc240b030d664dc5f23f1e53ed9b6d1bdd6340dbfca694206214bde6f384857602022-05-18 3:50:1923 secs ago Fantom Finance: Wrapped Fantom Token Beethoven X: Vault82.427545654992545804 FTM
0x90c678245e2be6e8ad69f691b3431c07783dd46995dccdc24f37682428dadc79384857602022-05-18 3:50:1923 secs ago Fantom Finance: Wrapped Fantom Token Beethoven X: Vault6,872.806760839507350217 FTM
0x90c678245e2be6e8ad69f691b3431c07783dd46995dccdc24f37682428dadc79384857602022-05-18 3:50:1923 secs ago Fantom Finance: Wrapped Fantom Token 0xab86e2bc9ec5485a9b60e684ba6d49bf4686acc216,035.805007273226929373 FTM
0xb8df9bf139cd3a0ea3741055e1276917da9b0bf7173e5b0b2c7777d4b60780d6384857572022-05-18 3:50:1626 secs ago Fantom Finance: Wrapped Fantom Token 0x0be5b483b36fedae9be73752106eec327394c80f0.957578607849176355 FTM
0x7491d81e26a56fe6c931bfa15a1fc80980600df04a73cbbe6413292e740c5909384857562022-05-18 3:50:1428 secs ago Fantom Finance: Wrapped Fantom Token 0x0be5b483b36fedae9be73752106eec327394c80f0.795840276771735168 FTM
0xdb8e42cc89362bcd9b8d528622e2a81373b105bf75c9b49981c3845246ce5f5c384857562022-05-18 3:50:1428 secs ago Fantom Finance: Wrapped Fantom Token 0x0be5b483b36fedae9be73752106eec327394c80f0.795840276771735168 FTM
0x8bc2a3df8b0fb45a7d9d6ee5025e6a1d6bca132ac1a17f20b6925738dbf8eeb3384857532022-05-18 3:50:0933 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router286.232886607370460049 FTM
0xe051a47bcf5dcfbee2ee0bdb9e0029a7e05f792dda1dae0f19c3b6a4864e61e2384857492022-05-18 3:50:0537 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router140.644937544584116137 FTM
0xc23792dcd99b6c58154ce0885e397b7f107ea1af9d16d3e852ee6bf4ed7ae56c384857482022-05-18 3:50:0438 secs ago Fantom Finance: Wrapped Fantom Token SpiritSwap: Router5.244094715814033372 FTM
0xcb18d630a80e37d67c2cb6560e6094f4f7e16ff97badd446e1aabc2893bd757b384857462022-05-18 3:50:0141 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router3.695281949045353546 FTM
0x165e7fbcb18b726cc762bd67895728bce0d450a4d9748eed4edf35c031cd0e76384857462022-05-18 3:50:0141 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token5 FTM
0x4a7a9d8cb6918cb68e00bad04e5770668b94b2f7378c6ceb3d25a941d3a82e5a384857442022-05-18 3:49:5943 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router0.837074011357515483 FTM
0xdbb91944ec4a9d156dd97472fed9109b8a668860b247a1557a444c65b4e05305384857382022-05-18 3:49:4854 secs ago Fantom Finance: Wrapped Fantom Token Beethoven X: Vault59.688921741755708871 FTM
0xff62349b34764617b03beb9d899c25fdc55e8b136addfa25570b425a037183db384857312022-05-18 3:49:421 min ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router43.667877510452871778 FTM
0xdc92bdb53c06b1745d2bb134566899cf42cece57103627b0887b7e2f8f34905c384857312022-05-18 3:49:421 min ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router10.342899475971882272 FTM
0xffbd69d55dba1f1fa023d74b89947f4c17c8d74c9bd00278169e6a653b47d821384857232022-05-18 3:49:351 min ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router707 FTM
0x66dc5467204722858221e426aa9c807e5aef18583ba9b95041a067108319fb53384857202022-05-18 3:49:191 min ago PaintSwap: Router Fantom Finance: Wrapped Fantom Token0.788669890699698896 FTM
0x02c3eb3c33f49131fcb6d12249f54a9f7e4e6c1e02866d6cc3154745b75eba97384857112022-05-18 3:49:101 min ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token773.026589815309996096 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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