Contract 0xfa1fbb8ef55a4855e5688c0ee13ac3f202486286 5

 
Txn Hash Method
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Value [Txn Fee]
0x1a6fe42d5edef85f9d1e67ef49fc48fd937058ce783aeca9fb345e37917ebf96Approve586167122023-03-29 4:44:2014 hrs 58 mins ago0x959fa94a12420cc75206cd699b09fd3465f88621 IN  FantOHM DAO: FHM Token0 FTM0.001574669539
0x2ebad157de7af5f80cfb03242feaffa1bd4664b39e74a2bba8672b82a50cf523Transfer586165772023-03-29 4:41:5715 hrs 1 min ago0xc62a0781934744e05927ceabb94a3043cdcfea89 IN  FantOHM DAO: FHM Token0 FTM0.001795982
0xd94c3ebb758d6539ec2a134b3eb8c3fd6a355f021e42b1e2349907bfa3c87e39Approve585989782023-03-28 22:25:3921 hrs 17 mins ago0x220953e9fea46431fd623f5dd7b67ecc71e874bc IN  FantOHM DAO: FHM Token0 FTM0.001285888537
0x3d44769a776e2dc5b2450c27277754e16453833cfe40cf6690b76e319d9d1768Approve585709372023-03-28 13:42:591 day 6 hrs ago0xd34852950a10576d5909012ad7ebcbf0a2d83c71 IN  FantOHM DAO: FHM Token0 FTM0.002637159921
0x72b92b6cadac53cfeb4fa3ef1766999baa935cf95b7af7e92b59639a897d3359Approve585674672023-03-28 12:31:421 day 7 hrs ago0x67c42395643b3e9b5df8755555e2475414a96cf2 IN  FantOHM DAO: FHM Token0 FTM0.003386548435
0xc45b7dfb2f4359ca37133dd12c45c13228028dff4b2f0127d7cf0e889d9b0ecbApprove584023722023-03-26 7:40:493 days 12 hrs ago0x959fa94a12420cc75206cd699b09fd3465f88621 IN  FantOHM DAO: FHM Token0 FTM0.001357097046
0x1163bcf8bc1593c9b751f69094978ce2bbf0de5763143aea93f9dbb29f04ce1dTransfer584023242023-03-26 7:39:413 days 12 hrs ago0xc62a0781934744e05927ceabb94a3043cdcfea89 IN  FantOHM DAO: FHM Token0 FTM0.000883089524
0xab104b5af161d93288e71ce255ab2c5647c35d017357f4c4a5719a87af24645bTransfer584008052023-03-26 7:04:293 days 12 hrs ago0xc62a0781934744e05927ceabb94a3043cdcfea89 IN  FantOHM DAO: FHM Token0 FTM0.001380442176
0x49b055637bbb930d5685b2426a62e773c5c8e846b04ac4d844f28f66cff41d0eTransfer583638372023-03-25 18:57:544 days 45 mins ago0xc62a0781934744e05927ceabb94a3043cdcfea89 IN  FantOHM DAO: FHM Token0 FTM0.002822949121
0x7990b5fe6ba96eadbf718096134b49e0f56488a213253693e3662f58927bfa00Approve583484642023-03-25 13:48:064 days 5 hrs ago0x2377eb3fc4366ae614cbe7848e20d55e6a83535e IN  FantOHM DAO: FHM Token0 FTM0.001513078
0x8c27fbf252d07051550498e650f414fd5bb3606a969c614249dcedd8d8ce4446Approve583456112023-03-25 12:45:004 days 6 hrs ago0x9e108f230e7ae673af6281cec61630e041d6b65f IN  FantOHM DAO: FHM Token0 FTM0.001680476
0x6e806549f5f89e7017bb5c488853be91563ad39c83843e29a20cfb32f76c399dTransfer583060582023-03-24 21:47:034 days 21 hrs ago0xb4e69de77e610e0baccefd9300c323e23ac284b8 IN  FantOHM DAO: FHM Token0 FTM0.0030527
0x657cfdcb9f9faf4bc0e8f3b0d10c18d8970c6bc5d9314137bd44d672257ddac9Approve582461862023-03-24 1:39:425 days 18 hrs ago0xd59fc878d3b23f15c8aa321ba7a5fc7e82b77fef IN  FantOHM DAO: FHM Token0 FTM0.001817452497
0xc3b606ceb314f0948d1f4c449a50f9c10bef1ab56a33906ae0f2b1a30d75cdd4Approve582370862023-03-23 23:17:145 days 20 hrs ago0x0b997e226b63fded87673bc8b43ba24477b8147a IN  FantOHM DAO: FHM Token0 FTM0.002075718215
0xdef5eca952fdd5dd8caee0585e9649383c290fd4e6c3f80b405473f0ebc745f0Approve581791072023-03-23 4:42:026 days 15 hrs ago0x1c75dbd9dfc03a9593ed9542e1ddd530d2c42589 IN  FantOHM DAO: FHM Token0 FTM0.001854536144
0x413c264216b08476f160da2f70ce2e57f63c068a226467a3dadc368a09f7ccb0Approve581732242023-03-23 3:01:166 days 16 hrs ago0x7b8135db002d27f745ef7f9f284fe9f641e6b217 IN  FantOHM DAO: FHM Token0 FTM0.001543931861
0x13a00cb1e433b74e5e412ab6926ce7024834544f188c2f041da9987acbfec4b7Approve581659102023-03-23 0:42:076 days 19 hrs ago0xc6510245a3d961746db4883916d2d600e19f4ff3 IN  FantOHM DAO: FHM Token0 FTM0.002316112451
0xe35ad62058e8a6108fafaf0b2284dda4903220837fc128ae7b924486ff0d1248Approve581586342023-03-22 22:09:296 days 21 hrs ago0x9997f27fcf2d463196ee6b2e3b7596d48d8e7c5e IN  FantOHM DAO: FHM Token0 FTM0.006060658481
0xa882d72b5d3791dba7b1d75adbbf94301da5db712c37046f7402f2ffe222003cApprove581566862023-03-22 21:31:186 days 22 hrs ago0x9997f27fcf2d463196ee6b2e3b7596d48d8e7c5e IN  FantOHM DAO: FHM Token0 FTM0.007109651104
0x977bb2e9b326526b9d66b05ba8a80ffaa15c94c4d83bc6aca1a44e18ed4fd67dApprove581543702023-03-22 20:46:246 days 22 hrs ago0x7a04eda5106793d439b8271c25798de5ba160c73 IN  FantOHM DAO: FHM Token0 FTM0.009051464265
0xd1192f5146dd5357b1627d8c382b30ca90c2b3d99f7151e28f6b03f159e2a7a2Approve581474812023-03-22 18:51:137 days 52 mins ago0x9997f27fcf2d463196ee6b2e3b7596d48d8e7c5e IN  FantOHM DAO: FHM Token0 FTM0.00632828148
0x6179e468daca3cc3d162444f1239d0097284a1f2272f86b156a6cacc194fba39Approve581107462023-03-22 6:43:207 days 12 hrs ago0x7b8135db002d27f745ef7f9f284fe9f641e6b217 IN  FantOHM DAO: FHM Token0 FTM0.000733105084
0x4896552b7244d267c180462f7a545352bd5459c4f3a000d4b30cde855f42b5e9Approve580039932023-03-20 19:59:188 days 23 hrs ago0x6daecbc6778a778afb0cac8ea0b943e7c1baabd6 IN  FantOHM DAO: FHM Token0 FTM0.001180829958
0x8c0f76a72464e7aae2446dab7c7cb62a54209bfb2e51cefb1636c8151257ce77Approve580039902023-03-20 19:59:158 days 23 hrs ago0x6daecbc6778a778afb0cac8ea0b943e7c1baabd6 IN  FantOHM DAO: FHM Token0 FTM0.001180829958
0xc4280c865004ff1ab970fe726deccb200dcb45ed3064e6363964022cf2af3170Approve579847352023-03-20 13:43:069 days 6 hrs ago0x330cbb1a4c6e1db1b13bebe12ce4fb0a33602f4c IN  FantOHM DAO: FHM Token0 FTM0.00241830584
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OVERVIEW

Fantohm is building a community-owned decentralized financial infrastructure to bring more stability and transparency for the world.

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0xc5bdf83655aa6e34b01448fbdfb4a3baf237b17f6a943ac1832f931c478662a7201838872021-10-26 19:22:04519 days 21 mins ago FantOHM DAO: Deployer  Contract Creation0 FTM
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Contract Source Code Verified (Exact Match)

Contract Name:
FantohmERC20Token

Compiler Version
v0.7.5+commit.eb77ed08

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, GNU AGPLv3 license

Contract Source Code (Solidity)

/**
 *Submitted for verification at FtmScan.com on 2021-10-27
*/

// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity 0.7.5;

library EnumerableSet {

    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.
    struct Set {
        // Storage of set values
        bytes32[] _values;

        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) { // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            bytes32 lastvalue = set._values[lastIndex];

            // Move the last value to the index where the value to delete is
            set._values[toDeleteIndex] = lastvalue;
            // Update the index for the moved value
            set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        require(set._values.length > index, "EnumerableSet: index out of bounds");
        return set._values[index];
    }

    function _getValues( Set storage set_ ) private view returns ( bytes32[] storage ) {
        return set_._values;
    }

    // TODO needs insert function that maintains order.
    // TODO needs NatSpec documentation comment.
    /**
     * Inserts new value by moving existing value at provided index to end of array and setting provided value at provided index
     */
    function _insert(Set storage set_, uint256 index_, bytes32 valueToInsert_ ) private returns ( bool ) {
        require(  set_._values.length > index_ );
        require( !_contains( set_, valueToInsert_ ), "Remove value you wish to insert if you wish to reorder array." );
        bytes32 existingValue_ = _at( set_, index_ );
        set_._values[index_] = valueToInsert_;
        return _add( set_, existingValue_);
    }

    struct Bytes4Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes4Set storage set, bytes4 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes4Set storage set, bytes4 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes4Set storage set, bytes4 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(Bytes4Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes4Set storage set, uint256 index) internal view returns ( bytes4 ) {
        return bytes4( _at( set._inner, index ) );
    }

    function getValues( Bytes4Set storage set_ ) internal view returns ( bytes4[] memory ) {
        bytes4[] memory bytes4Array_;
        for( uint256 iteration_ = 0; _length( set_._inner ) > iteration_; iteration_++ ) {
            bytes4Array_[iteration_] = bytes4( _at( set_._inner, iteration_ ) );
        }
        return bytes4Array_;
    }

    function insert( Bytes4Set storage set_, uint256 index_, bytes4 valueToInsert_ ) internal returns ( bool ) {
        return _insert( set_._inner, index_, valueToInsert_ );
    }

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns ( bytes32 ) {
        return _at(set._inner, index);
    }

    function getValues( Bytes32Set storage set_ ) internal view returns ( bytes4[] memory ) {
        bytes4[] memory bytes4Array_;

        for( uint256 iteration_ = 0; _length( set_._inner ) >= iteration_; iteration_++ ){
            bytes4Array_[iteration_] = bytes4( at( set_, iteration_ ) );
        }

        return bytes4Array_;
    }

    function insert( Bytes32Set storage set_, uint256 index_, bytes32 valueToInsert_ ) internal returns ( bool ) {
        return _insert( set_._inner, index_, valueToInsert_ );
    }

    // AddressSet
    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(value)));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(value)));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(value)));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint256(_at(set._inner, index)));
    }

    /**
     * TODO Might require explicit conversion of bytes32[] to address[].
     *  Might require iteration.
     */
    function getValues( AddressSet storage set_ ) internal view returns ( address[] memory ) {

        address[] memory addressArray;

        for( uint256 iteration_ = 0; _length(set_._inner) >= iteration_; iteration_++ ){
            addressArray[iteration_] = at( set_, iteration_ );
        }

        return addressArray;
    }

    function insert(AddressSet storage set_, uint256 index_, address valueToInsert_ ) internal returns ( bool ) {
        return _insert( set_._inner, index_, bytes32(uint256(valueToInsert_)) );
    }


    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    struct UInt256Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UInt256Set storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UInt256Set storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UInt256Set storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UInt256Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UInt256Set storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }
}

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

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

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

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

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

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

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

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

library SafeMath {

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {

        if (a == 0) {
            return 0;
        }

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

        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        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;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }

    function sqrrt(uint256 a) internal pure returns (uint c) {
        if (a > 3) {
            c = a;
            uint b = add( div( a, 2), 1 );
            while (b < c) {
                c = b;
                b = div( add( div( a, b ), b), 2 );
            }
        } else if (a != 0) {
            c = 1;
        }
    }

    function percentageAmount( uint256 total_, uint8 percentage_ ) internal pure returns ( uint256 percentAmount_ ) {
        return div( mul( total_, percentage_ ), 1000 );
    }

    function substractPercentage( uint256 total_, uint8 percentageToSub_ ) internal pure returns ( uint256 result_ ) {
        return sub( total_, div( mul( total_, percentageToSub_ ), 1000 ) );
    }

    function percentageOfTotal( uint256 part_, uint256 total_ ) internal pure returns ( uint256 percent_ ) {
        return div( mul(part_, 100) , total_ );
    }

    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow, so we distribute
        return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
    }

    function quadraticPricing( uint256 payment_, uint256 multiplier_ ) internal pure returns (uint256) {
        return sqrrt( mul( multiplier_, payment_ ) );
    }

    function bondingCurve( uint256 supply_, uint256 multiplier_ ) internal pure returns (uint256) {
        return mul( multiplier_, supply_ );
    }
}

abstract contract ERC20 is IERC20 {

    using SafeMath for uint256;

    // TODO comment actual hash value.
    bytes32 constant private ERC20TOKEN_ERC1820_INTERFACE_ID = keccak256( "ERC20Token" );

    // Present in ERC777
    mapping (address => uint256) internal _balances;

    // Present in ERC777
    mapping (address => mapping (address => uint256)) internal _allowances;

    // Present in ERC777
    uint256 internal _totalSupply;

    // Present in ERC777
    string internal _name;

    // Present in ERC777
    string internal _symbol;

    // Present in ERC777
    uint8 internal _decimals;

    constructor (string memory name_, string memory symbol_, uint8 decimals_) {
        _name = name_;
        _symbol = symbol_;
        _decimals = decimals_;
    }

    function name() public view returns (string memory) {
        return _name;
    }

    function symbol() public view returns (string memory) {
        return _symbol;
    }

    function decimals() public view returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue));
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    function _mint(address account_, uint256 amount_) internal virtual {
        require(account_ != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address( this ), account_, amount_);
        _totalSupply = _totalSupply.add(amount_);
        _balances[account_] = _balances[account_].add(amount_);
        emit Transfer(address( this ), account_, amount_);
    }

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    function _approve(address owner, address spender, uint256 amount) internal virtual {
        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);
    }

    function _beforeTokenTransfer( address from_, address to_, uint256 amount_ ) internal virtual { }
}

library Counters {
    using SafeMath for uint256;

    struct Counter {
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        counter._value += 1;
    }

    function decrement(Counter storage counter) internal {
        counter._value = counter._value.sub(1);
    }
}

interface IERC2612Permit {

    function permit(
        address owner,
        address spender,
        uint256 amount,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    function nonces(address owner) external view returns (uint256);
}

abstract contract ERC20Permit is ERC20, IERC2612Permit {
    using Counters for Counters.Counter;

    mapping(address => Counters.Counter) private _nonces;

    // keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;

    bytes32 public DOMAIN_SEPARATOR;

    constructor() {
        uint256 chainID;
        assembly {
            chainID := chainid()
        }

        DOMAIN_SEPARATOR = keccak256(
            abi.encode(
                keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                keccak256(bytes(name())),
                keccak256(bytes("1")), // Version
                chainID,
                address(this)
            )
        );
    }

    function permit(
        address owner,
        address spender,
        uint256 amount,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual override {
        require(block.timestamp <= deadline, "Permit: expired deadline");

        bytes32 hashStruct =
        keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, amount, _nonces[owner].current(), deadline));

        bytes32 _hash = keccak256(abi.encodePacked(uint16(0x1901), DOMAIN_SEPARATOR, hashStruct));

        address signer = ecrecover(_hash, v, r, s);
        require(signer != address(0) && signer == owner, "ZeroSwapPermit: Invalid signature");

        _nonces[owner].increment();
        _approve(owner, spender, amount);
    }

    function nonces(address owner) public view override returns (uint256) {
        return _nonces[owner].current();
    }
}

interface IOwnable {
    function owner() external view returns (address);

    function renounceOwnership() external;

    function transferOwnership( address newOwner_ ) external;
}

contract Ownable is IOwnable {

    address internal _owner;

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

    constructor () {
        _owner = msg.sender;
        emit OwnershipTransferred( address(0), _owner );
    }

    function owner() public view override returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require( _owner == msg.sender, "Ownable: caller is not the owner" );
        _;
    }

    function renounceOwnership() public virtual override onlyOwner() {
        emit OwnershipTransferred( _owner, address(0) );
        _owner = address(0);
    }

    function transferOwnership( address newOwner_ ) public virtual override onlyOwner() {
        require( newOwner_ != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred( _owner, newOwner_ );
        _owner = newOwner_;
    }
}

contract VaultOwned is Ownable {

    address internal _vault;

    function setVault( address vault_ ) external onlyOwner() returns ( bool ) {
        _vault = vault_;

        return true;
    }

    function vault() public view returns (address) {
        return _vault;
    }

    modifier onlyVault() {
        require( _vault == msg.sender, "VaultOwned: caller is not the Vault" );
        _;
    }

}

contract FantohmERC20Token is ERC20Permit, VaultOwned {

    using SafeMath for uint256;

    constructor() ERC20("Fantohm", "FHM", 9) {
    }

    function mint(address account_, uint256 amount_) external onlyVault() {
        _mint(account_, amount_);
    }

    function burn(uint256 amount) public virtual {
        _burn(msg.sender, amount);
    }

    function burnFrom(address account_, uint256 amount_) public virtual {
        _burnFrom(account_, amount_);
    }

    function _burnFrom(address account_, uint256 amount_) public virtual {
        uint256 decreasedAllowance_ =
        allowance(account_, msg.sender).sub(
            amount_,
            "ERC20: burn amount exceeds allowance"
        );

        _approve(account_, msg.sender, decreasedAllowance_);
        _burn(account_, amount_);
    }
}

Contract Security Audit

Contract ABI

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{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner_","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"vault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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Swarm Source

ipfs://7efeb3dc040e98a041e195471fc7f3018fa741d37df4359fc5683f55d79926a0
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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