Contract 0x602eb0d99a5e3e76d1510372c4d2020e12eaea8a 14

 

Contract Overview

TridentDAO: PSI Token
Balance:
0 ETH

ETH Value:
$0.00

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x86137814af0d2798d26afc55b6f43b44d165965c6e07692f0fc09e3e290b8a03Transfer1950024642024-03-28 6:19:011 day 4 hrs agoGate.io IN  TridentDAO: PSI Token0 ETH0.000002720.01
0x203f1f70f1cf77a1a3251ce37e8f55144aac167499163b7bf5dd2ef0a5c11732Approve1948761382024-03-27 21:30:091 day 13 hrs ago0x21a96bf1d30fe419b9eb2e805e4f5d27ca36cee9 IN  TridentDAO: PSI Token0 ETH0.00000823 0.01
0x1419ec3ccf6b9176fdc349e5b70eacd224ca0dbfcc52169fbd2a95b990cbe429Transfer1948682332024-03-27 20:56:481 day 14 hrs ago0x6c69fa64ec451b1bc5b5fbaa56cf648a281634be IN  TridentDAO: PSI Token0 ETH0.000001920.01
0xc80f6e4ee2e2adcd26b6e09beb72e680b5eb41064577231bd3f9de7bcbdec664Transfer1948598102024-03-27 20:21:391 day 14 hrs ago0x039ac6fbcebf02b54259bc690e13540693d9eb8d IN  TridentDAO: PSI Token0 ETH0.00000150.01
0x1f5c3097ab6a3c041fefe8eabc818706a3ee18b5fc4a52cabbae4de328303cb9Transfer1945154072024-03-26 20:21:402 days 14 hrs ago0x039ac6fbcebf02b54259bc690e13540693d9eb8d IN  TridentDAO: PSI Token0 ETH0.000001830.01
0xd734a9b1baf553fe34fe353dafeab1367846bde3b561bc71f48576d22bc1ffc0Transfer1943075702024-03-26 5:55:033 days 5 hrs ago0x6c69fa64ec451b1bc5b5fbaa56cf648a281634be IN  TridentDAO: PSI Token0 ETH0.000001090.01
0x0afb3ed14f9cd686dd21be5dcdf9cbd60eddec4519433b054ef7df3ff8c8a3f3Transfer1942461402024-03-26 1:38:513 days 9 hrs ago0xb3ec1309c7b211075c5f7b3a1b67a43cafb3b1a0 IN  TridentDAO: PSI Token0 ETH0.00000109 0.01
0xf7d29b2240bead46ec1d1f33f115b6859ac911e00c339e7a2eb91866076b368eTransfer1941699872024-03-25 20:21:303 days 14 hrs ago0x039ac6fbcebf02b54259bc690e13540693d9eb8d IN  TridentDAO: PSI Token0 ETH0.000001960.01
0x3a7146b2414e08143dc6095637c529669a9810b2b220f4c6580473739691e25bApprove1940642612024-03-25 13:00:173 days 22 hrs ago0x80783701c216da1bb74a92947455cde3702e9cd0 IN  TridentDAO: PSI Token0 ETH0.000001 0.01
0xe6fe309955cd118251b9bc179348b9bcbaf4feb0d04844bf2c185dcb358b7754Transfer1940387602024-03-25 11:14:024 days 3 mins ago0xd6916878ccd28c43e2dbe5123a3c6cf05abb4852 IN  TridentDAO: PSI Token0 ETH0.000001120.01
0xed0c981330f9d75264798fbedbde4e5d4638b5c74e2d97364e45cfda3fa012b9Approve1938282292024-03-24 20:34:464 days 14 hrs ago0x36c8bbea98be7ec123646dc36f7f0e61afbec416 IN  TridentDAO: PSI Token0 ETH0.00000101 0.01
0x2461caa4cb192c2ae60af5ca7af29ea3bdca7e63c508b2b0888db60b16c144e6Transfer1938250982024-03-24 20:21:434 days 14 hrs ago0x039ac6fbcebf02b54259bc690e13540693d9eb8d IN  TridentDAO: PSI Token0 ETH0.000000860.01
0x7e7c56cd0d35f152a833a46a4003e25ebbe573cbeb98afa18314b34a7b588920Approve1935592862024-03-24 1:52:235 days 9 hrs ago0x9759ac66fbf6977c2f778f23ca493daf98462e23 IN  TridentDAO: PSI Token0 ETH0.0000007 0.01
0xb9d4ffe498c689234bd380cd4546caf45c2cd5d6701171dd8b0a8432b0745c2fTransfer1934804412024-03-23 20:21:525 days 14 hrs ago0x039ac6fbcebf02b54259bc690e13540693d9eb8d IN  TridentDAO: PSI Token0 ETH0.00000080.01
0x0f9d653227e51d9a1d64ee101f3579ef5c208729741312e0df46dd076279b95fApprove1934654532024-03-23 19:19:005 days 15 hrs ago0xb775142841f4b84b78a341bf0eb721a079b4dc87 IN  TridentDAO: PSI Token0 ETH0.000000830.01
0x75d8e8632b492c45cc59ae29f14493e9006264353eb071e7bdc3b95d2393d9fdApprove1934646502024-03-23 19:15:375 days 16 hrs ago0xb775142841f4b84b78a341bf0eb721a079b4dc87 IN  TridentDAO: PSI Token0 ETH0.000000830.01
0x2fc730e4f44e09a13f4e4abd8482cca0edc1b6c3a315b37b3ca85aa6d679b8adApprove1934337362024-03-23 17:06:245 days 18 hrs ago0x8a6897f2df0dd304b32826aae57e829ce8eed505 IN  TridentDAO: PSI Token0 ETH0.000000840.01
0xf9abc5633ab82156e94d862f2a357eb6841f34958c42bec7b1edca779f3bb362Approve1933530492024-03-23 11:29:135 days 23 hrs ago0x6f6eb5245ef516c481b860a36d868548249e8187 IN  TridentDAO: PSI Token0 ETH0.000000860.01
0x2395b6a7799e1a886b618c1d4872a6a2a67c41bdeb4db32630e0319999692b53Approve1933110622024-03-23 8:34:106 days 2 hrs ago0xdc9b12dce625b08418009247cfaed324edbc7943 IN  TridentDAO: PSI Token0 ETH0.00000072 0.01
0x10462450ed0c404369954f16d0c0ff6b5e460b0e7b2baaf1731bc8d962596421Approve1933110272024-03-23 8:34:016 days 2 hrs ago0xdc9b12dce625b08418009247cfaed324edbc7943 IN  TridentDAO: PSI Token0 ETH0.00000072 0.01
0xd2f9b3dc30041a82b97d3fb6bd8161c3d3d3170709f2495b82dc1c4f5c6a2b9dApprove1931968982024-03-23 0:38:016 days 10 hrs ago0xd4356285b8938b0d339bda797dc5da7a96a96a7b IN  TridentDAO: PSI Token0 ETH0.00000094 0.01
0x82a0830ea82f52c63dd4d90f0ce113a294f33e83126d93ab1b208c936c0ef591Transfer1931445182024-03-22 20:58:596 days 14 hrs ago0x19ef813f5309787f03a4aca7e66554f5de831dad IN  TridentDAO: PSI Token0 ETH0.000000960.01
0xb37771b57622a4a25409c52c94154b81a8e4eb64746a640c75fce8362df78c70Transfer1929942812024-03-22 10:31:027 days 46 mins ago0x6c69fa64ec451b1bc5b5fbaa56cf648a281634be IN  TridentDAO: PSI Token0 ETH0.00000130.01
0xa681f7f07c294b31035da86ca445dc73d02ab796a5e35e283f006b3cc18801f1Approve1929341182024-03-22 6:20:177 days 4 hrs ago0xed33f486d10b229eb3da83d23d423f4da56de476 IN  TridentDAO: PSI Token0 ETH0.000000950.01
0xa1b30dc754b4bfaa78499a13d96c15adaffec2db140afadee0d66d5810277ddfTransfer1928013492024-03-21 21:02:507 days 14 hrs ago0x920021936b28c93491a02f760fa20aa599083ed5 IN  TridentDAO: PSI Token0 ETH0.000001570.01
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OVERVIEW

The state of GameFi is currently disappointing, to say the least. Saddened by the sorry state of not just GameFi, but also the broader gaming world, the team was assembled, and Trident was born.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x8496d324bce6f851e4a93f89b7492c224ec7ba8a05a5610cb0e2eb24137eca69720847782023-03-21 10:11:00374 days 1 hr ago 0x458bcc519fa8c223e0c1aeb458bb85710f594329 TridentDAO: PSI Token0 ETH
0x863d4ec9f8b911e6c37a77912c2604ebbfbf636464ee4d0527a99321e5a9c95c720831622023-03-21 10:04:19374 days 1 hr ago 0xd7c05938c43b48f3b9aed8a5348530a47e53c79b TridentDAO: PSI Token0 ETH
0x863d4ec9f8b911e6c37a77912c2604ebbfbf636464ee4d0527a99321e5a9c95c720831622023-03-21 10:04:19374 days 1 hr ago Uniswap V3: Positions NFT TridentDAO: PSI Token0 ETH
0x863d4ec9f8b911e6c37a77912c2604ebbfbf636464ee4d0527a99321e5a9c95c720831622023-03-21 10:04:19374 days 1 hr ago 0xd7c05938c43b48f3b9aed8a5348530a47e53c79b TridentDAO: PSI Token0 ETH
0xa307f86817ea55cb02b9eddd1214ab5d010b6c2af1696a45f22772089622c0ad720825392023-03-21 10:01:42374 days 1 hr ago Uniswap V3: Positions NFT TridentDAO: PSI Token0 ETH
0xa307f86817ea55cb02b9eddd1214ab5d010b6c2af1696a45f22772089622c0ad720825392023-03-21 10:01:42374 days 1 hr ago Uniswap V3: Positions NFT TridentDAO: PSI Token0 ETH
0xa307f86817ea55cb02b9eddd1214ab5d010b6c2af1696a45f22772089622c0ad720825392023-03-21 10:01:42374 days 1 hr ago 0xd7c05938c43b48f3b9aed8a5348530a47e53c79b TridentDAO: PSI Token0 ETH
0x6591bfcba57d17e244f7a8c218efaa5d77f642881fef43ec8928936aa421d1a5720811822023-03-21 9:56:06374 days 1 hr ago 0x458bcc519fa8c223e0c1aeb458bb85710f594329 TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago 0x: Exchange Proxy Flash Wallet TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago 0xd7c05938c43b48f3b9aed8a5348530a47e53c79b TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago Uniswap V3: Router TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago 0xd7c05938c43b48f3b9aed8a5348530a47e53c79b TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago 0x: Exchange Proxy Flash Wallet TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago 0x458bcc519fa8c223e0c1aeb458bb85710f594329 TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago Uniswap V3: Router TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago 0x458bcc519fa8c223e0c1aeb458bb85710f594329 TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago 0x: Exchange Proxy Flash Wallet TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago 0x: Exchange Proxy Flash Wallet TridentDAO: PSI Token0 ETH
0x8bce9c5b72b490a2f1b17df6251fbea925959c2a065f2523dc4dca61770807d0720806152023-03-21 9:53:44374 days 1 hr ago 0x: Exchange Proxy TridentDAO: PSI Token0 ETH
0xb3edd6d1220873b660844b70e1998e055a9245d772d94d9c548b713d008f164f720803842023-03-21 9:52:46374 days 1 hr ago 1inch v5: Aggregation Router TridentDAO: PSI Token0 ETH
0xb3edd6d1220873b660844b70e1998e055a9245d772d94d9c548b713d008f164f720803842023-03-21 9:52:46374 days 1 hr ago 1inch v5: Aggregation Router TridentDAO: PSI Token0 ETH
0xb3edd6d1220873b660844b70e1998e055a9245d772d94d9c548b713d008f164f720803842023-03-21 9:52:46374 days 1 hr ago 0xd7c05938c43b48f3b9aed8a5348530a47e53c79b TridentDAO: PSI Token0 ETH
0xe8aa6efb3efdfdcd2096d39f08d8241bd0c4effdda7e42e786c7fbdb06bd1c1b720801962023-03-21 9:52:07374 days 1 hr ago 0x6fc313bc29d9ba7f990d303cabde5b759090bb14 TridentDAO: PSI Token0 ETH
0xe8aa6efb3efdfdcd2096d39f08d8241bd0c4effdda7e42e786c7fbdb06bd1c1b720801962023-03-21 9:52:07374 days 1 hr ago 0x6fc313bc29d9ba7f990d303cabde5b759090bb14 TridentDAO: PSI Token0 ETH
0xe405f1efa22956852be13e7d9bd8a8ab32fbe01b01fc53ae6ad16d1a4eddd330720791502023-03-21 9:47:44374 days 1 hr ago 0xb5b6bc81faebc149fc2f6e3d52803d67f0096829 TridentDAO: PSI Token0 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x9e16e3a1eea6e060debbb65dd8060284275f3a0f
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
TridentBaseToken

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 Arbiscan.io on 2023-01-22
*/

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

/**
 * @dev Intended to update the TWAP for a token based on accepting an update call from that token.
 *  expectation is to have this happen in the _beforeTokenTransfer function of ERC20.
 *  Provides a method for a token to register its price sourve adaptor.
 *  Provides a function for a token to register its TWAP updater. Defaults to token itself.
 *  Provides a function a tokent to set its TWAP epoch.
 *  Implements automatic closeing and opening up a TWAP epoch when epoch ends.
 *  Provides a function to report the TWAP from the last epoch when passed a token address.
 */
interface ITWAPOracle {

  function uniV2CompPairAddressForLastEpochUpdateBlockTimstamp( address ) external returns ( uint32 );

  function priceTokenAddressForPricingTokenAddressForLastEpochUpdateBlockTimstamp( address tokenToPrice_, address tokenForPriceComparison_, uint epochPeriod_ ) external returns ( uint32 );

  function pricedTokenForPricingTokenForEpochPeriodForPrice( address, address, uint ) external returns ( uint );

  function pricedTokenForPricingTokenForEpochPeriodForLastEpochPrice( address, address, uint ) external returns ( uint );

  function updateTWAP( address uniV2CompatPairAddressToUpdate_, uint eopchPeriodToUpdate_ ) external returns ( bool );
}

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 {
    /**
     * @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.
     */
    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.
     */
    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;
    }

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

    // babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
    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;
        }
    }

    /*
     * Expects percentage to be trailed by 00,
    */
    function percentageAmount( uint256 total_, uint8 percentage_ ) internal pure returns ( uint256 percentAmount_ ) {
        return div( mul( total_, percentage_ ), 1000 );
    }

    /*
     * Expects percentage to be trailed by 00,
    */
    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_ );
    }

    /**
     * Taken from Hypersonic https://github.com/M2629/HyperSonic/blob/main/Math.sol
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    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;

  /**
   * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
   * a default value of 18.
   *
   * To select a different value for {decimals}, use {_setupDecimals}.
   *
   * All three of these values are immutable: they can only be set once during
   * construction.
   */
  constructor (string memory name_, string memory symbol_, uint8 decimals_) {
    _name = name_;
    _symbol = symbol_;
    _decimals = decimals_;
  }

  /**
   * @dev Returns the name of the token.
   */
  // Present in ERC777
  function name() public view returns (string memory) {
    return _name;
  }

  /**
   * @dev Returns the symbol of the token, usually a shorter version of the
   * name.
   */
  // Present in ERC777
  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. This is the value {ERC20} uses, unless {_setupDecimals} is
   * called.
   *
   * 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}.
   */
  // Present in ERC777
  function decimals() public view returns (uint8) {
    return _decimals;
  }

  /**
   * @dev See {IERC20-totalSupply}.
   */
  // Present in ERC777
  function totalSupply() public view override returns (uint256) {
    return _totalSupply;
  }

  /**
   * @dev See {IERC20-balanceOf}.
   */
  // Present in ERC777
  function balanceOf(address account) public view virtual override 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`.
   */
  // Overrideen in ERC777
  // Confirm that this behavior changes 
  function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
    _transfer(msg.sender, recipient, amount);
    return true;
  }

    /**
     * @dev See {IERC20-allowance}.
     */
    // Present in ERC777
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    // Present in ERC777
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(msg.sender, 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`.
     */
    // Present in ERC777
    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;
    }

    /**
     * @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 virtual returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][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 virtual returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][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 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);
  }

    /** @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.
     */
    // Present in ERC777
    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_);
    }

    /**
     * @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.
     */
    // Present in ERC777
    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);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This 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.
     */
    // Present in ERC777
    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);
    }

    /**
     * @dev Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    // Considering deprication to reduce size of bytecode as changing _decimals to internal acheived the same functionality.
    // function _setupDecimals(uint8 decimals_) internal {
    //     _decimals = decimals_;
    // }

  /**
   * @dev Hook that is called before any transfer of tokens. This includes
   * minting and burning.
   *
   * Calling conditions:
   *
   * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
   * will be to transferred to `to`.
   * - when `from` is zero, `amount` tokens will be minted for `to`.
   * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
   * - `from` and `to` are never both zero.
   *
   * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
   */
  // Present in ERC777
  function _beforeTokenTransfer( address from_, address to_, uint256 amount_ ) internal virtual { }
}

library Counters {
    using SafeMath for uint256;

    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

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

    function increment(Counter storage counter) internal {
        // The {SafeMath} overflow check can be skipped here, see the comment at the top
        counter._value += 1;
    }

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

interface IERC2612Permit {
    /**
     * @dev Sets `amount` as the allowance of `spender` over `owner`'s tokens,
     * given `owner`'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 amount,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current ERC2612 nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    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)
            )
        );
    }

    /**
     * @dev See {IERC2612Permit-permit}.
     *
     */
    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);
    }

    /**
     * @dev See {IERC2612Permit-nonces}.
     */
    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 pushOwnership( address newOwner_ ) external;
}

contract Ownable is IOwnable {
    
  address internal _owner;

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

  /**
   * @dev Initializes the contract setting the deployer as the initial owner.
   */
  constructor () {
    _owner = msg.sender;
    emit OwnershipTransferred( address(0), _owner );
  }

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

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require( _owner == msg.sender, "Ownable: caller is not the owner" );
    _;
  }

  /**
   * @dev Leaves the contract without owner. It will not be possible to call
   * `onlyOwner` functions anymore. Can only be called by the current owner.
   *
   * NOTE: Renouncing ownership will leave the contract without an owner,
   * thereby removing any functionality that is only available to the owner.
   */
  function renounceOwnership() public virtual override onlyOwner() {
    emit OwnershipTransferred( _owner, address(0) );
    _owner = address(0);
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`).
   * Can only be called by the current owner.
   */
  function pushOwnership( 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;
  }

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

  /**
   * @dev Throws if called by any account other than the vault.
   */
  modifier onlyVault() {
    require( _vault == msg.sender, "VaultOwned: caller is not the Vault" );
    _;
  }

}

contract TWAPOracleUpdater is ERC20Permit, VaultOwned {

  using EnumerableSet for EnumerableSet.AddressSet;

  event TWAPOracleChanged( address indexed previousTWAPOracle, address indexed newTWAPOracle );
  event TWAPEpochChanged( uint previousTWAPEpochPeriod, uint newTWAPEpochPeriod );
  event TWAPSourceAdded( address indexed newTWAPSource );
  event TWAPSourceRemoved( address indexed removedTWAPSource );
    
  EnumerableSet.AddressSet private _dexPoolsTWAPSources;

  ITWAPOracle public twapOracle;

  uint public twapEpochPeriod;

  constructor(
        string memory name_,
        string memory symbol_,
        uint8 decimals_
    ) ERC20(name_, symbol_, decimals_) {
    }

  function changeTWAPOracle( address newTWAPOracle_ ) external onlyOwner() {
    emit TWAPOracleChanged( address(twapOracle), newTWAPOracle_);
    twapOracle = ITWAPOracle( newTWAPOracle_ );
  }

  function changeTWAPEpochPeriod( uint newTWAPEpochPeriod_ ) external onlyOwner() {
    require( newTWAPEpochPeriod_ > 0, "TWAPOracleUpdater: TWAP Epoch period must be greater than 0." );
    emit TWAPEpochChanged( twapEpochPeriod, newTWAPEpochPeriod_ );
    twapEpochPeriod = newTWAPEpochPeriod_;
  }

  function addTWAPSource( address newTWAPSourceDexPool_ ) external onlyOwner() {
    require( _dexPoolsTWAPSources.add( newTWAPSourceDexPool_ ), "TridentERC20TOken: TWAP Source already stored." );
    emit TWAPSourceAdded( newTWAPSourceDexPool_ );
  }

  function removeTWAPSource( address twapSourceToRemove_ ) external onlyOwner() {
    require( _dexPoolsTWAPSources.remove( twapSourceToRemove_ ), "TridentERC20TOken: TWAP source not present." );
    emit TWAPSourceRemoved( twapSourceToRemove_ );
  }

  function _uodateTWAPOracle( address dexPoolToUpdateFrom_, uint twapEpochPeriodToUpdate_ ) internal {
    if ( _dexPoolsTWAPSources.contains( dexPoolToUpdateFrom_ )) {
      twapOracle.updateTWAP( dexPoolToUpdateFrom_, twapEpochPeriodToUpdate_ );
    }
  }

  function _beforeTokenTransfer( address from_, address to_, uint256 amount_ ) internal override virtual {
      if( _dexPoolsTWAPSources.contains( from_ ) ) {
        _uodateTWAPOracle( from_, twapEpochPeriod );
      } else {
        if ( _dexPoolsTWAPSources.contains( to_ ) ) {
          _uodateTWAPOracle( to_, twapEpochPeriod );
        }
      }
    }
}

contract TridentBaseToken is TWAPOracleUpdater {

  using SafeMath for uint256;

    constructor(string memory name_, string memory ticker_) TWAPOracleUpdater(name_, ticker_, 9) {
    }

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

    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(msg.sender, amount);
    }

    // function _beforeTokenTransfer( address from_, address to_, uint256 amount_ ) internal override virtual {
    //   if( _dexPoolsTWAPSources.contains( from_ ) ) {
    //     _uodateTWAPOracle( from_, twapEpochPeriod );
    //   } else {
    //     if ( _dexPoolsTWAPSources.contains( to_ ) ) {
    //       _uodateTWAPOracle( to_, twapEpochPeriod );
    //     }
    //   }
    // }

    /*
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `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 ABI

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"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner_","type":"address"}],"name":"pushOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"twapSourceToRemove_","type":"address"}],"name":"removeTWAPSource","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"vault_","type":"address"}],"name":"setVault","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"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":[],"name":"twapEpochPeriod","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"twapOracle","outputs":[{"internalType":"contract ITWAPOracle","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

Deployed Bytecode

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Metadata Hash

45bdcec7b0bd722ba60812bd528c57e2e7f4e1a792a04285ab9ad5a6ba39f0cf
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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