Contract 0x21be370D5312f44cB42ce377BC9b8a0cEF1A4C83 13

 

Contract Overview

Fantom Finance: Wrapped Fantom Token
Balance:
271,696,561.296832533010318995 FTM

FTM Value:
$166,740,179.67 (@ $0.61/FTM)

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xfaf47c4442c43adb1372d96d6a5236933cea28230ab27dc4ad74241685313b7eDeposit551299472023-02-05 10:49:4131 secs ago0x33a45cc8c3ee56c60f87158b46659d1f4d33c688 IN  Fantom Finance: Wrapped Fantom Token4,320 FTM0.003204021917
0x6b13d070fff99678fb4b76c7c342b66e5da438d1979f779d3743312fd2bde370Increase Allowan...551299372023-02-05 10:49:2844 secs ago0x565bdfc122988dbb3a9cfe21385edcb5a3c9c142 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003232873417
0xb605088e776c7ed91538be6f0da77a33c61cee82d9eadbfbc87f68f230d8c29fApprove551299102023-02-05 10:48:551 min ago0x90b3f8e4658c948ff773ac4d3f211080a5a4e333 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003289903349
0x0d5da58c0171ab3ac004daba5ba0e7c21708f67b4d42f430396a9be9aa8680eaApprove551298672023-02-05 10:47:592 mins ago0x984c5d268b220784e87fbe8edbb5c6b9f7ba9fc4 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003503725161
0x121c280fcb6fe755a41c24ca38aa392004be39a185f6e68c00fe29765690a0f4Deposit551298562023-02-05 10:47:482 mins ago0x90b3f8e4658c948ff773ac4d3f211080a5a4e333 IN  Fantom Finance: Wrapped Fantom Token5,000 FTM0.003571211044
0x103a1de881a2b13542a38f74e1c65744e5b6892072f709c99ea3b91bb77731e0Deposit551298452023-02-05 10:47:362 mins ago0x984c5d268b220784e87fbe8edbb5c6b9f7ba9fc4 IN  Fantom Finance: Wrapped Fantom Token2,000 FTM0.004802655159
0xc35ada379245cfa64d7722d7bec6df87100c21a8f01609d962b7bbe3e9c1fbc9Approve551297942023-02-05 10:46:293 mins ago0xc13aa1d5fa211d04b7dd87ae2f780151d47022cd IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003002128488
0x6bc64f0992cb4b6c42ba7fa173a73332e0985456155d94b83b2727045773852fApprove551297712023-02-05 10:45:494 mins ago0xc13aa1d5fa211d04b7dd87ae2f780151d47022cd IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003151695804
0x75b4215b4c3fc3a8eda4512d2e2b2ec92946d9f474c8c9e0b27454cb1c6c89b1Approve551297572023-02-05 10:45:334 mins ago0x0849f5477813c0acb47aaceb5fb64da0ea5256a5 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.001911720599
0x0431e858fd40ff619d24619fb768e9461d9258dd1d55afb42c1dec9a23f5977fDeposit551296662023-02-05 10:43:236 mins ago0xc95dada8a2746cf41968bfec0b523b1521562f9d IN  Fantom Finance: Wrapped Fantom Token2,466 FTM0.003493362959
0x87b6a252721ef406c442d21d6484ee7c5a81457f9fff960c2abde2fdd2f02bcfApprove551296262023-02-05 10:42:207 mins ago0xc95dada8a2746cf41968bfec0b523b1521562f9d IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003137701161
0xd10d9c7e2ded9de1dd5a6076612889f1a99c5655e65c429389628ab8834fc172Deposit551295932023-02-05 10:41:378 mins ago0x565bdfc122988dbb3a9cfe21385edcb5a3c9c142 IN  Fantom Finance: Wrapped Fantom Token5 FTM0.002375200679
0x8848916cfede34f659539666b03266c1ae15a2d14673ca9eaf9a5b3bc74ea7aeApprove551295482023-02-05 10:40:369 mins ago0x35d25b8bf5f72c9e862433805385908ddebeebc8 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003167075117
0x7f333dd377bf491556aaab24984cbf5eca0f1688b41c6142f24e51db0bd86c46Transfer551294922023-02-05 10:39:2610 mins ago0x4120d8fb3639a52d0dc0d3e12893921fdf027d07 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.002192152082
0x2ba01b09c7e5ac600e3f5f0c73b87f9c819e173951dc1e7257211f11911a1a38Withdraw551294752023-02-05 10:39:0611 mins ago0x084ad65c4b04e7ae4a3ddedd3f7dca59a15419da IN  Fantom Finance: Wrapped Fantom Token0 FTM0.002579330858
0xde9239cb10d328d7fa6c59675061ecaccf0d3c5bb180090593998fc1418ff3c1Deposit551294472023-02-05 10:38:2711 mins ago0xb6c98bcaf05d3437e604e52b6b0acfa336e8f333 IN  Fantom Finance: Wrapped Fantom Token15 FTM0.002330396669
0xc72e6e38ca48fe0b01ec0e0dc0ce8ecc98ceeb80b887d2f39fb3c1a14121b192Approve551294442023-02-05 10:38:2511 mins ago0xcd79272e57a870c0b1f69a8c840244364c4a0260 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003256265923
0x1e6813033965b399acfa6f0c3e807788ce9a314862bc65eacd3bf80adada7c77Approve551294302023-02-05 10:38:1012 mins ago0xc375f84824574f3f63ddba0ce2b2fc0ef6f51865 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003604750033
0x0a0ad1960410e8a9cffb28a54e184d317521d58a93ba1747f8a49f6740bd1f2fDeposit551293792023-02-05 10:37:1512 mins ago0xc375f84824574f3f63ddba0ce2b2fc0ef6f51865 IN  Fantom Finance: Wrapped Fantom Token95 FTM0.002337246584
0xbdba18d005d4536b6c163894f250ba95d2ecc2c1e1c36bb1310f94a05b25cbdfApprove551293252023-02-05 10:36:1813 mins ago0xf2555d876ee7e0b6e85c828e0e55c58430bc2937 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003199966972
0x00cd6f6c74fa36add58e22f0365dd204dccbb1604957e9a75cc72224035865abWithdraw551293132023-02-05 10:36:0214 mins ago0xca39ce35d31b49401f206870316a223c273f6174 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.002515303245
0x0387d342edcb872ec77696a94ede985a2c814996e5c5cbfa06d317f1fa0fb3f0Withdraw551292762023-02-05 10:35:2114 mins ago0x9d674d432cf5f8c34e4e08ac769ab428db484fd4 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.002520779639
0x184b06ff12c0d6b453f6a963b62a8b72236cbad444c91680459642a82d8cb4eeApprove551292572023-02-05 10:34:5715 mins ago0x6c552b47afb47f7d0c6af1dac9a479046102ed11 IN  Fantom Finance: Wrapped Fantom Token0 FTM0.003200753043
0xd0bcdaad3fc01dbe34e72101c37fe3df1767b3601b513811080279b9aa762d40Approve551291852023-02-05 10:33:4516 mins ago0x67a4384719624d09ed2e86f69169465dd6cf594e IN  Fantom Finance: Wrapped Fantom Token0 FTM0.002047279075
0x32f32c3080c8510c7d56e084505c5ba187c239b78164a0a74ba67a92b431343eDeposit551291462023-02-05 10:33:1017 mins ago0x67a4384719624d09ed2e86f69169465dd6cf594e IN  Fantom Finance: Wrapped Fantom Token108 FTM0.003458257193
[ Download CSV Export 
Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x221eb4f4f87710a2a80e3432b955ad3814b8cbc53c323675b679b6d7e0b9be15551299662023-02-05 10:50:0210 secs ago Beethoven X: Vault Fantom Finance: Wrapped Fantom Token82 FTM
0xad736503bf6ea493d9f454c8671aff5c9d0c1984b34bdbba5ba978c2d510d5ae551299582023-02-05 10:49:5418 secs ago 0x1a05eb736873485655f29a37def8a0aa87f5a447 Fantom Finance: Wrapped Fantom Token500 FTM
0xf5d436d41decb27ce5101684c5d08886fa5e7396e7e954c337ac24c4f613f53a551299562023-02-05 10:49:5220 secs ago Fantom Finance: Wrapped Fantom Token 0x73c10841997e8d391e553d047abc10f81711576718.95251538535593976 FTM
0xfc48bfe28cb668e6e626a12212ef8d228ae0613ea3016814f2f8b93b1a36ddf3551299532023-02-05 10:49:4824 secs ago Fantom Finance: Wrapped Fantom Token SpookySwap: Router920.488019413216108427 FTM
0x5fd0c38f95a3ad285c331f99a12cdc03b72f8a65b0e178d8e2dd7a2995f783a0551299482023-02-05 10:49:4230 secs ago Fantom Finance: Wrapped Fantom Token Mummy Finance: Reward Router0.345521341374170213 FTM
0xbbcc5b7ac8c2ef9ec869d3809447f20ad39186bdec816e0c77c57c93cf3adbb7551299382023-02-05 10:49:3042 secs ago Fantom Finance: Wrapped Fantom Token 0x18da33a56817e80afbecf86d8a8573805b8d951218.232703204683104037 FTM
0x65dfc5b329c506c240c5279c826973a00ba228dc49723adf10d95dcfc8d893e1551299372023-02-05 10:49:2844 secs ago Fantom Finance: Wrapped Fantom Token 0x31f63a33141ffee63d4b26755430a390acdd8a4d584.089713496361295641 FTM
0x824fd43262dcda3af238d517cba67e3e89fd7a1ed4af5609f7f295c29c5c061b551299372023-02-05 10:49:2844 secs ago 0x31f63a33141ffee63d4b26755430a390acdd8a4d Fantom Finance: Wrapped Fantom Token1 FTM
0x5f70210140b6925fab6d2bcfb91e949210259ed9bc8a197c634577b2e2614617551299362023-02-05 10:49:2745 secs ago 0x31f63a33141ffee63d4b26755430a390acdd8a4d Fantom Finance: Wrapped Fantom Token7 FTM
0xcfb62daf951bbac67d32b160d8f1e6a5fb3219f018fd54a0e7cc84b1e2eab808551299342023-02-05 10:49:2547 secs ago 0x31f63a33141ffee63d4b26755430a390acdd8a4d Fantom Finance: Wrapped Fantom Token0.36 FTM
0x813f53b22db3ccd7503644864f00446fed85dc4feba02c18c0161f805d686d89551299332023-02-05 10:49:2448 secs ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token236.295305 FTM
0xc1350cbe3e8eaee6030f5d7557a73ff31661ec56ca50456c67e947106748fb7f551299292023-02-05 10:49:1953 secs ago Beethoven X: Vault Fantom Finance: Wrapped Fantom Token13 FTM
0xa01fb2a8e6d9432a55740eda874a44a0815656384597c378cc560ffbbc565a51551299242023-02-05 10:49:1359 secs ago Fantom Finance: Wrapped Fantom Token SpiritSwap: Router84.430449863731050461 FTM
0x6d85d2261d51de03f1aa77d0366cf1493cbb2f4d83134a7c2b1f1b2b56b0ccb3551299182023-02-05 10:49:071 min ago Fantom Finance: Wrapped Fantom Token 0xa517750eb8d93ba37f6595773153ea9ec7ae0af822.940563898277352428 FTM
0x76274fd0f6a9d09ae5200867d5e18914b049926b8d129135ef3cfd04b96f6286551299182023-02-05 10:49:071 min ago Fantom Finance: Wrapped Fantom Token SpiritSwap: Router1,696.978413526161641811 FTM
0x55c123b760b15490e503c1274a603128cc2581bf6a823ab945537fb57ae32d24551299162023-02-05 10:49:041 min ago Fantom Finance: Wrapped Fantom Token 0x1a05eb736873485655f29a37def8a0aa87f5a44740.604307685947240989 FTM
0x4a1a6ebaae64552b90ecfaa72f8c4bf5013912c10a43198738cadd466aedf1d0551299142023-02-05 10:49:011 min ago 0x31f63a33141ffee63d4b26755430a390acdd8a4d Fantom Finance: Wrapped Fantom Token451.7088 FTM
0xe269645b82df5f06882623e2c95118dcb09190cf21a660f6c733eeae4b7c2453551299132023-02-05 10:49:011 min ago 0xdd20ee2add6682585ebaae2690ab2e328ee501fc Fantom Finance: Wrapped Fantom Token35 FTM
0x1d3ee4503e1c5ed70ef5767c4afa691fc398675aad968721ab7b365bd29059bb551299122023-02-05 10:48:591 min ago SpookySwap: Router Fantom Finance: Wrapped Fantom Token123 FTM
0xbd86598397867d66d7bfe56904f587002fbec32d10183e0997743a6ca6076de1551299102023-02-05 10:48:551 min ago Fantom Finance: Wrapped Fantom Token 0x5bab9d61f84630a76fa9e2f67739f2da694b540225.687786662985623215 FTM
0x4c58e528841cb5381e97c4bad6bf973b574a7a72c982c0cd6b130e4965d26a51551299102023-02-05 10:48:551 min ago Fantom Finance: Wrapped Fantom Token 0x1a05eb736873485655f29a37def8a0aa87f5a44715.241792331640340958 FTM
0x45179768fd9dcd5e17d1d966342107dc943247a9b01c7c065c58761f712bcf76551299042023-02-05 10:48:491 min ago Fantom Finance: Wrapped Fantom Token 0x31f63a33141ffee63d4b26755430a390acdd8a4d2.005413091202776795 FTM
0xe7119735c7067c1d539d9bf113b6485c587696f00de02ac199ba073146dffb7d551299042023-02-05 10:48:491 min ago 0x31f63a33141ffee63d4b26755430a390acdd8a4d Fantom Finance: Wrapped Fantom Token1 FTM
0x129a2cf159c6d4a4bf9736b68689dde6ddef389b9c605dc9f2e1fb2be84b4577551298962023-02-05 10:48:341 min ago Fantom Finance: Wrapped Fantom Token 0x31f63a33141ffee63d4b26755430a390acdd8a4d8.5 FTM
0xd7513468b8fd9987ee6bfb4075c45a8d4722347ec47e256a9e4e3513800b84ca551298952023-02-05 10:48:331 min ago Fantom Finance: Wrapped Fantom Token 0x2162d7e1fe3c29d14be28c5b78e3b6264006e80625.014942204358878271 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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