Contract 0x828e90cef49b3baea41590ebf7f274d49f845dbb

 
Txn Hash
Block
From
To
Value [Txn Fee]
0x4fb35972b0efb28b6dae428a9290d7cdead74ca651cf97657ff987a439eb4fab94648352021-07-25 11:55:302 days 21 hrs ago0x0e64cbca254788df4a8d29e3721d077d91d0d92a IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x7eac5a75a32fb41c55d4256009cd930e470ea4b5d100f15b8a7947a1d9b00baa94424632021-07-24 17:13:353 days 16 hrs ago0xeb6c565be43cfad9b905b8f59d8ef4ef4624a0d2 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000424825
0x3d27a8b22a46393a4c0063a667df94cd0af5d7a7f33bd5b92980c843ab38755294404522021-07-24 15:30:203 days 18 hrs ago0xe13e96aa6ba23ec545c62b0e6a8ad2109d2a6bce IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000424825
0x219903194b508b228a06c4acafc3fab4c9f99c6d8422eb6b68c9ac8ef67d9b7694345372021-07-24 10:29:103 days 23 hrs ago0x9e2626f985ea2c44948480825cabf0cf7873feaa IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x37997aff3101cd31d0f739d21cd930f65cd26d91e95db5fa871fd3f5a840ea2d92315362021-07-17 9:02:4911 days 40 mins ago0xb1ac9db0d6a1ec291f427ad03fc3b632e1e93a56 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x95606d471f1b24ee5bc10ca90a62d577a71feaa0d97806877e6d9eaa889ebed491671122021-07-15 3:20:5413 days 6 hrs ago0x81ac474376844b2fbfda16220f96c95ab4da72c8 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000424825
0x615a10bfa9bf56449903a306d3e4573c5a6e03a33683cf7a3e0623d55502c6aa91515752021-07-14 14:22:4913 days 19 hrs ago0x66616e4bed3f8fe7b2b9739de22300d2dad0d851 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x011c1aa1236b38ad0946e4c0fa87a1f7f0ce3674706518252e3e0bd4fd80290b88107562021-07-02 17:30:2825 days 16 hrs ago0x8f721f336069f166b9148e16bd0b922e7e2eac7f IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x9423613fdf72c654caab41249193e5c32512d7a424c6d6291dd2d04998d089e382946952021-06-14 16:33:4943 days 17 hrs ago0x768e3b10ebbfa2d72f055b3c982e0ca1a7069363 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x350951b688534a3881a0bc7903983dd16e618ac3d9447d982a31a0536e2aa11181990182021-06-11 8:11:0947 days 1 hr ago0x806cafaa1b34c9b9d2fc33bbae3de209e9d137e0 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x3f0bceeac01af65507a292418f856bab1536c4843df8d552ecfdf27e28b2531d81787792021-06-10 15:14:3347 days 18 hrs ago0xb0a70ae5f361828836c938ca5c78bdd43ab732d0 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x769ea5d3f0ec260b2c40d4ec52beb3ded5cea61a09d5bf0d8ad2c8c885773f8c77093252021-05-25 6:35:4964 days 3 hrs ago0xd54024ada48ac6b395adc45c507b187962e8aca0 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0xc1e17bc840c3347d18318756cbdd8a476566836c64a20b384c6f952fcfaaaf8d72232092021-05-07 20:22:0381 days 13 hrs ago0x147d129d3915ebfb7370423c66473ec747425bee IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0xd959251f7866bdef48815125410e6cebd394412f7ea4868f0160b4ddd8ad6a6372148452021-05-07 13:16:1881 days 20 hrs ago0x2136bc6cbfac0e9b3b5686d59e693f76727e42dc IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x924a2f7bd271f8740483844102521b5f6f9338982f0e0e41832413c80fcb4db669265592021-04-27 9:41:3092 days 1 min ago0xba6699ad358bd900bf9b80cafd5812f5a25e7d19 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x11eea2f006f724366c0c2e71204142e1a6b348887b8b4c04920cf13f04a2cbe069264582021-04-27 9:36:2792 days 6 mins ago0x6f3e58fb425a261722ba54e031ca6b49d21b0c22 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x91a3be047377b4ebaf8d483bca04ef8b95d3c3735d20e0787007ea26f17bafe868648192021-04-25 5:56:5694 days 3 hrs ago0x95b2aa08fd7e7aca63ab519ebfaa84c4f414abb1 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000128365
0x943279064adfe4c1fa616da5a41652000b9626a208d3b3c880027ecf9de96bcc68648172021-04-25 5:56:4894 days 3 hrs ago0x95b2aa08fd7e7aca63ab519ebfaa84c4f414abb1 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0xe4cb7ccad2183c99923dc6d10b20cea273c688f004ce589635e663f7b1472a2068122282021-04-23 9:59:5695 days 23 hrs ago0x2136bc6cbfac0e9b3b5686d59e693f76727e42dc IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x530bb441d99c25be2f7f5b5aea601ef2eb39d951d8aca43276bf15a22e1b2c6867315392021-04-20 13:10:0698 days 20 hrs ago0xa42ea6b117d32cdd51c9baec41ab3f71e80fa25c IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000147095
0x6926cfe5c31e053053e95a64f61fa1fa436267ed8ce1d8bd39b71a62ee116bbc67315232021-04-20 13:09:1898 days 20 hrs ago0xa42ea6b117d32cdd51c9baec41ab3f71e80fa25c IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000424885
0x7b3564e64544b8ee40db077ea32200743fe843629a36ce041e1bd7dc4d0e641364186602021-04-09 15:53:15109 days 17 hrs ago0xba6699ad358bd900bf9b80cafd5812f5a25e7d19 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000224365
0x5b1d585a5a0ac4c0e09bef1d7df10c36db66413a1690006e6c353c35df9abf6763842992021-04-08 10:21:22110 days 23 hrs ago0x456937a2d7a1598d6b81623f3acb22fb29568684 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.000424825
0x36a208f0da57228c31457c9009b444abe87e3bc8ad0658289ad3278bc2bc0f1f63840652021-04-08 10:07:44110 days 23 hrs ago0x456937a2d7a1598d6b81623f3acb22fb29568684 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.0001091
0xc40b5546b2daae7b99d4e6744c8c5dd51dd6ee8bd850cd5533046a723fbfc1e263840272021-04-08 10:04:43110 days 23 hrs ago0x67147c9cf619e35a3ff877c38c67d64d30704f46 IN  0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB0.0001091
[ Download CSV Export 
Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x9d68bb6c8b72f38f95f3aa28062fcddf13b481083fa85f3b7cf99b68378f518154692892021-03-07 10:17:24142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x1079007e0fb1443d37be042c3e6eed5b8865847e489b0b5b2c092784d664d58854692692021-03-07 10:16:24142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0xaed5dcd67e135fd08775d3efd70b0bb7d85850e1d83cb80ab5527f4d7511c39a54692552021-03-07 10:15:42142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x63140c46591edbff260d75919d73bf325a59839f2490e6bee9d71f264d39226a54691782021-03-07 10:11:51142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0xc3fc2467057e293af321e6fc0badbc673eae33c8fd30e55526283cf3773760b454691612021-03-07 10:11:00142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x8d7c2afda6563bbc3bad86bfc58a2d529f404ab341d044f20307821edb21be0954691332021-03-07 10:09:36142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0xe5375340e18dc6612997da76962d44ab2988efad523deb94b3f9ed8d409df96c54690882021-03-07 10:07:21142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x88b11833e6b992526cb9e7f18578f8e5851b4b589b1bd48a5ad54034f9ed125e54690612021-03-07 10:06:00142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x9fee7fbc5a184ce717ad36498595664841e2fcde75c4c4d8c47d55e945d8a16b54689612021-03-07 10:01:00142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x47d961c147f075b28fe4d18f3370c8b656de9482774c6b5436ca6bcd75ea854354688932021-03-07 9:57:36142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0xb988bdbc707db1018b9da3f201c5fa3ec2c1a6262b9cf4cdc73a7cf8e51ed0e254687822021-03-07 9:52:03142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x0e166ad7efc5915e5ad69eec3893bf8e524646fe5a2a5b1662a12afbcbc5207d54687472021-03-07 9:50:18142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0xc4475cf683b0a82df378dd67d2af427651804b4f44e5feb361f7cacd493f929054687252021-03-07 9:49:12142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0xf1b7f50d3f037acac47d5d53b932f1b68c90fde4e9db221f3de930beacaee5e454686722021-03-07 9:46:33142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x4440bd64b7788cca22af98d4002ddb8c1da875194d728bfdacd11787adbcc06d54686542021-03-07 9:45:39142 days 23 hrs ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x4a4f13613b4fd2b76711d3f8d0ff166cfb148788c0dc95ae665fb4880e8ddbc954685962021-03-07 9:42:45143 days ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x1cd35a5d1538cec21ff5cf325411169b53b32061a461381681cf8e852cef28f354685232021-03-07 9:39:06143 days 4 mins ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0xfb60e158fbb90e7a93e5cd38cdc54888514570783f1b12eed5c8a6e059e7b5f154684412021-03-07 9:35:00143 days 8 mins ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0xcc0faeb6a77d074c62257aff7b264b31be2a5e3db228423b33503e95c61f000c54684102021-03-07 9:33:27143 days 9 mins ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x264bd261394726dbcf7012e0096586b01d14c8ca7e82fbad6d44f5e819af9f5d54683852021-03-07 9:32:12143 days 10 mins ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0xad0124778cb3cdc601d6f40bc5c3cbb041e24c03db73532881a8a30b4cbb062e54536622021-03-06 21:15:51143 days 12 hrs ago 0x828e90cef49b3baea41590ebf7f274d49f845dbb 0xd0ccd2e103fda6a7d2f501190ecd878b64744cce0 BNB
0xad0124778cb3cdc601d6f40bc5c3cbb041e24c03db73532881a8a30b4cbb062e54536622021-03-06 21:15:51143 days 12 hrs ago 0xd0ccd2e103fda6a7d2f501190ecd878b64744cce 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x7d842526838b3145b42f7d3995ae175ae73d1686b0cad0835cd290ac61eeeb0b54425392021-03-06 11:58:24143 days 21 hrs ago 0xd0ccd2e103fda6a7d2f501190ecd878b64744cce 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x0fe94752c9cb5448baf8b43d864f20f61ee6109f7b0f6425c256f90753121c8f54387152021-03-06 8:47:02144 days 56 mins ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
0x4aa2fedee25d514d77f0f7292a223f314cdb7b822bde1c7b3fe0c03f8eb62a1454387042021-03-06 8:46:29144 days 56 mins ago 0xecc394cd5d7f3f08c55508ab670ee9d5d11a7f71 0x828e90cef49b3baea41590ebf7f274d49f845dbb0 BNB
[ Download CSV Export 
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
ERC721PresetMinterPauserAutoId

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at BscScan.com on 2021-02-18
*/

pragma solidity 0.6.12;

// Sources flattened with hardhat v2.0.8 https://hardhat.org

// File @openzeppelin/contracts/utils/[email protected]

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 */
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];
    }

    // Bytes32Set

    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 in 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);
    }

    // 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)));
    }


    // 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));
    }
}


// File @openzeppelin/contracts/utils/[email protected]

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}


// File @openzeppelin/contracts/GSN/[email protected]

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

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


// File @openzeppelin/contracts/access/[email protected]

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context {
    using EnumerableSet for EnumerableSet.AddressSet;
    using Address for address;

    struct RoleData {
        EnumerableSet.AddressSet members;
        bytes32 adminRole;
    }

    mapping (bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view returns (bool) {
        return _roles[role].members.contains(account);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view returns (uint256) {
        return _roles[role].members.length();
    }

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view returns (address) {
        return _roles[role].members.at(index);
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual {
        require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to grant");

        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual {
        require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to revoke");

        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        emit RoleAdminChanged(role, _roles[role].adminRole, adminRole);
        _roles[role].adminRole = adminRole;
    }

    function _grantRole(bytes32 role, address account) private {
        if (_roles[role].members.add(account)) {
            emit RoleGranted(role, account, _msgSender());
        }
    }

    function _revokeRole(bytes32 role, address account) private {
        if (_roles[role].members.remove(account)) {
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}


// File @openzeppelin/contracts/math/[email protected]

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
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;
    }
}


// File @openzeppelin/contracts/utils/[email protected]


/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath}
 * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never
 * directly accessed.
 */
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);
    }
}


// File @openzeppelin/contracts/introspection/[email protected]

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}


// File @openzeppelin/contracts/token/ERC721/[email protected]

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
      * @dev Safely transfers `tokenId` token from `from` to `to`.
      *
      * Requirements:
      *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
      * - `tokenId` token must exist and be owned by `from`.
      * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
      * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
      *
      * Emits a {Transfer} event.
      */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}


// File @openzeppelin/contracts/token/ERC721/[email protected]


/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {

    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}


// File @openzeppelin/contracts/token/ERC721/[email protected]

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {

    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}


// File @openzeppelin/contracts/token/ERC721/[email protected]


/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}


// File @openzeppelin/contracts/introspection/[email protected]


/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts may inherit from this and call {_registerInterface} to declare
 * their support of an interface.
 */
abstract contract ERC165 is IERC165 {
    /*
     * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7
     */
    bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;

    /**
     * @dev Mapping of interface ids to whether or not it's supported.
     */
    mapping(bytes4 => bool) private _supportedInterfaces;

    constructor () internal {
        // Derived contracts need only register support for their own interfaces,
        // we register support for ERC165 itself here
        _registerInterface(_INTERFACE_ID_ERC165);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     *
     * Time complexity O(1), guaranteed to always use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) public view override returns (bool) {
        return _supportedInterfaces[interfaceId];
    }

    /**
     * @dev Registers the contract as an implementer of the interface defined by
     * `interfaceId`. Support of the actual ERC165 interface is automatic and
     * registering its interface id is not required.
     *
     * See {IERC165-supportsInterface}.
     *
     * Requirements:
     *
     * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
     */
    function _registerInterface(bytes4 interfaceId) internal virtual {
        require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
        _supportedInterfaces[interfaceId] = true;
    }
}


// File @openzeppelin/contracts/utils/[email protected]


/**
 * @dev Library for managing an enumerable variant of Solidity's
 * https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
 * type.
 *
 * Maps have the following properties:
 *
 * - Entries are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Entries are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableMap for EnumerableMap.UintToAddressMap;
 *
 *     // Declare a set state variable
 *     EnumerableMap.UintToAddressMap private myMap;
 * }
 * ```
 *
 * As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are
 * supported.
 */
library EnumerableMap {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Map type with
    // bytes32 keys and values.
    // The Map implementation uses private functions, and user-facing
    // implementations (such as Uint256ToAddressMap) are just wrappers around
    // the underlying Map.
    // This means that we can only create new EnumerableMaps for types that fit
    // in bytes32.

    struct MapEntry {
        bytes32 _key;
        bytes32 _value;
    }

    struct Map {
        // Storage of map keys and values
        MapEntry[] _entries;

        // Position of the entry defined by a key in the `entries` array, plus 1
        // because index 0 means a key is not in the map.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
        // We read and store the key's index to prevent multiple reads from the same storage slot
        uint256 keyIndex = map._indexes[key];

        if (keyIndex == 0) { // Equivalent to !contains(map, key)
            map._entries.push(MapEntry({ _key: key, _value: value }));
            // The entry is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            map._indexes[key] = map._entries.length;
            return true;
        } else {
            map._entries[keyIndex - 1]._value = value;
            return false;
        }
    }

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

        if (keyIndex != 0) { // Equivalent to contains(map, key)
            // To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one
            // in the array, and then remove the last entry (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = keyIndex - 1;
            uint256 lastIndex = map._entries.length - 1;

            // When the entry 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.

            MapEntry storage lastEntry = map._entries[lastIndex];

            // Move the last entry to the index where the entry to delete is
            map._entries[toDeleteIndex] = lastEntry;
            // Update the index for the moved entry
            map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved entry was stored
            map._entries.pop();

            // Delete the index for the deleted slot
            delete map._indexes[key];

            return true;
        } else {
            return false;
        }
    }

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

    /**
     * @dev Returns the number of key-value pairs in the map. O(1).
     */
    function _length(Map storage map) private view returns (uint256) {
        return map._entries.length;
    }

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

        MapEntry storage entry = map._entries[index];
        return (entry._key, entry._value);
    }

    /**
     * @dev Returns the value associated with `key`.  O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function _get(Map storage map, bytes32 key) private view returns (bytes32) {
        return _get(map, key, "EnumerableMap: nonexistent key");
    }

    /**
     * @dev Same as {_get}, with a custom error message when `key` is not in the map.
     */
    function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
        uint256 keyIndex = map._indexes[key];
        require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
        return map._entries[keyIndex - 1]._value; // All indexes are 1-based
    }

    // UintToAddressMap

    struct UintToAddressMap {
        Map _inner;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
        return _set(map._inner, bytes32(key), bytes32(uint256(value)));
    }

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

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

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

   /**
    * @dev Returns the element 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(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
        (bytes32 key, bytes32 value) = _at(map._inner, index);
        return (uint256(key), address(uint256(value)));
    }

    /**
     * @dev Returns the value associated with `key`.  O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
        return address(uint256(_get(map._inner, bytes32(key))));
    }

    /**
     * @dev Same as {get}, with a custom error message when `key` is not in the map.
     */
    function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
        return address(uint256(_get(map._inner, bytes32(key), errorMessage)));
    }
}


// File @openzeppelin/contracts/utils/[email protected]


/**
 * @dev String operations.
 */
library Strings {
    /**
     * @dev Converts a `uint256` to its ASCII `string` representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        uint256 index = digits - 1;
        temp = value;
        while (temp != 0) {
            buffer[index--] = byte(uint8(48 + temp % 10));
            temp /= 10;
        }
        return string(buffer);
    }
}


// File @openzeppelin/contracts/token/ERC721/[email protected]


/**
 * @title ERC721 Non-Fungible Token Standard basic implementation
 * @dev see https://eips.ethereum.org/EIPS/eip-721
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
    using SafeMath for uint256;
    using Address for address;
    using EnumerableSet for EnumerableSet.UintSet;
    using EnumerableMap for EnumerableMap.UintToAddressMap;
    using Strings for uint256;

    // Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
    // which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`
    bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;

    // Mapping from holder address to their (enumerable) set of owned tokens
    mapping (address => EnumerableSet.UintSet) private _holderTokens;

    // Enumerable mapping from token ids to their owners
    EnumerableMap.UintToAddressMap private _tokenOwners;

    // Mapping from token ID to approved address
    mapping (uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping (address => mapping (address => bool)) private _operatorApprovals;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Optional mapping for token URIs
    mapping (uint256 => string) private _tokenURIs;

    // Base URI
    string private _baseURI;

    /*
     *     bytes4(keccak256('balanceOf(address)')) == 0x70a08231
     *     bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e
     *     bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3
     *     bytes4(keccak256('getApproved(uint256)')) == 0x081812fc
     *     bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465
     *     bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5
     *     bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd
     *     bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e
     *     bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde
     *
     *     => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^
     *        0xa22cb465 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd
     */
    bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;

    /*
     *     bytes4(keccak256('name()')) == 0x06fdde03
     *     bytes4(keccak256('symbol()')) == 0x95d89b41
     *     bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd
     *
     *     => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f
     */
    bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;

    /*
     *     bytes4(keccak256('totalSupply()')) == 0x18160ddd
     *     bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59
     *     bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7
     *
     *     => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63
     */
    bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor (string memory name_, string memory symbol_) public {
        _name = name_;
        _symbol = symbol_;

        // register the supported interfaces to conform to ERC721 via ERC165
        _registerInterface(_INTERFACE_ID_ERC721);
        _registerInterface(_INTERFACE_ID_ERC721_METADATA);
        _registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");

        return _holderTokens[owner].length();
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view override returns (address) {
        return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        string memory _tokenURI = _tokenURIs[tokenId];

        // If there is no base URI, return the token URI.
        if (bytes(_baseURI).length == 0) {
            return _tokenURI;
        }
        // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
        if (bytes(_tokenURI).length > 0) {
            return string(abi.encodePacked(_baseURI, _tokenURI));
        }
        // If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
        return string(abi.encodePacked(_baseURI, tokenId.toString()));
    }

    /**
    * @dev Returns the base URI set via {_setBaseURI}. This will be
    * automatically added as a prefix in {tokenURI} to each token's URI, or
    * to the token ID if no specific URI is set for that token ID.
    */
    function baseURI() public view returns (string memory) {
        return _baseURI;
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) {
        return _holderTokens[owner].at(index);
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view override returns (uint256) {
        // _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds
        return _tokenOwners.length();
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view override returns (uint256) {
        (uint256 tokenId, ) = _tokenOwners.at(index);
        return tokenId;
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), "ERC721: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(address from, address to, uint256 tokenId) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view returns (bool) {
        return _tokenOwners.contains(tokenId);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     d*
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
        _mint(to, tokenId);
        require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _holderTokens[to].add(tokenId);

        _tokenOwners.set(tokenId, to);

        emit Transfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        // Clear metadata (if any)
        if (bytes(_tokenURIs[tokenId]).length != 0) {
            delete _tokenURIs[tokenId];
        }

        _holderTokens[owner].remove(tokenId);

        _tokenOwners.remove(tokenId);

        emit Transfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(address from, address to, uint256 tokenId) internal virtual {
        require(ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _holderTokens[from].remove(tokenId);
        _holderTokens[to].add(tokenId);

        _tokenOwners.set(tokenId, to);

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
        require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
        _tokenURIs[tokenId] = _tokenURI;
    }

    /**
     * @dev Internal function to set the base URI for all token IDs. It is
     * automatically added as a prefix to the value returned in {tokenURI},
     * or to the token ID if {tokenURI} is empty.
     */
    function _setBaseURI(string memory baseURI_) internal virtual {
        _baseURI = baseURI_;
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)
        private returns (bool)
    {
        if (!to.isContract()) {
            return true;
        }
        bytes memory returndata = to.functionCall(abi.encodeWithSelector(
            IERC721Receiver(to).onERC721Received.selector,
            _msgSender(),
            from,
            tokenId,
            _data
        ), "ERC721: transfer to non ERC721Receiver implementer");
        bytes4 retval = abi.decode(returndata, (bytes4));
        return (retval == _ERC721_RECEIVED);
    }

    function _approve(address to, uint256 tokenId) private {
        _tokenApprovals[tokenId] = to;
        emit Approval(ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}


// File @openzeppelin/contracts/token/ERC721/[email protected]

/**
 * @title ERC721 Burnable Token
 * @dev ERC721 Token that can be irreversibly burned (destroyed).
 */
abstract contract ERC721Burnable is Context, ERC721 {
    /**
     * @dev Burns `tokenId`. See {ERC721-_burn}.
     *
     * Requirements:
     *
     * - The caller must own `tokenId` or be an approved operator.
     */
    function burn(uint256 tokenId) public virtual {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
        _burn(tokenId);
    }
}


// File @openzeppelin/contracts/utils/[email protected]

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

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

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor () internal {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!_paused, "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(_paused, "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}


// File @openzeppelin/contracts/token/ERC721/[email protected]

/**
 * @dev ERC721 token with pausable token transfers, minting and burning.
 *
 * Useful for scenarios such as preventing trades until the end of an evaluation
 * period, or having an emergency switch for freezing all token transfers in the
 * event of a large bug.
 */
abstract contract ERC721Pausable is ERC721, Pausable {
    /**
     * @dev See {ERC721-_beforeTokenTransfer}.
     *
     * Requirements:
     *
     * - the contract must not be paused.
     */
    function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override {
        super._beforeTokenTransfer(from, to, tokenId);

        require(!paused(), "ERC721Pausable: token transfer while paused");
    }
}


// File @openzeppelin/contracts/presets/[email protected]


/**
 * @dev {ERC721} token, including:
 *
 *  - ability for holders to burn (destroy) their tokens
 *  - a minter role that allows for token minting (creation)
 *  - a pauser role that allows to stop all token transfers
 *  - token ID and URI autogeneration
 *
 * This contract uses {AccessControl} to lock permissioned functions using the
 * different roles - head to its documentation for details.
 *
 * The account that deploys the contract will be granted the minter and pauser
 * roles, as well as the default admin role, which will let it grant both minter
 * and pauser roles to other accounts.
 */
contract ERC721PresetMinterPauserAutoId is Context, AccessControl, ERC721Burnable, ERC721Pausable {
    using Counters for Counters.Counter;

    bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
    bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");

    Counters.Counter private _tokenIdTracker;

    /**
     * @dev Grants `DEFAULT_ADMIN_ROLE`, `MINTER_ROLE` and `PAUSER_ROLE` to the
     * account that deploys the contract.
     *
     * Token URIs will be autogenerated based on `baseURI` and their token IDs.
     * See {ERC721-tokenURI}.
     */
    constructor(string memory name, string memory symbol, string memory baseURI) public ERC721(name, symbol) {
        _setupRole(DEFAULT_ADMIN_ROLE, _msgSender());

        _setupRole(MINTER_ROLE, _msgSender());
        _setupRole(PAUSER_ROLE, _msgSender());

        _setBaseURI(baseURI);
    }

    /**
     * @dev Creates a new token for `to`. Its token ID will be automatically
     * assigned (and available on the emitted {IERC721-Transfer} event), and the token
     * URI autogenerated based on the base URI passed at construction.
     *
     * See {ERC721-_mint}.
     *
     * Requirements:
     *
     * - the caller must have the `MINTER_ROLE`.
     */
    function mint(address to) public virtual {
        require(hasRole(MINTER_ROLE, _msgSender()), "ERC721PresetMinterPauserAutoId: must have minter role to mint");

        // We cannot just use balanceOf to create the new tokenId because tokens
        // can be burned (destroyed), so we need a separate counter.
        _mint(to, _tokenIdTracker.current());
        _tokenIdTracker.increment();
    }

    /**
     * @dev Pauses all token transfers.
     *
     * See {ERC721Pausable} and {Pausable-_pause}.
     *
     * Requirements:
     *
     * - the caller must have the `PAUSER_ROLE`.
     */
    function pause() public virtual {
        require(hasRole(PAUSER_ROLE, _msgSender()), "ERC721PresetMinterPauserAutoId: must have pauser role to pause");
        _pause();
    }

    /**
     * @dev Unpauses all token transfers.
     *
     * See {ERC721Pausable} and {Pausable-_unpause}.
     *
     * Requirements:
     *
     * - the caller must have the `PAUSER_ROLE`.
     */
    function unpause() public virtual {
        require(hasRole(PAUSER_ROLE, _msgSender()), "ERC721PresetMinterPauserAutoId: must have pauser role to unpause");
        _unpause();
    }

    function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override(ERC721, ERC721Pausable) {
        super._beforeTokenTransfer(from, to, tokenId);
    }
}

Contract ABI

[{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"string","name":"baseURI","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MINTER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PAUSER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"baseURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRoleMember","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleMemberCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","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":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

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

-----Encoded View---------------
10 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000011
Arg [4] : 4d79204e65696768626f7220416c696365000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000007
Arg [6] : 4d4e415f4e465400000000000000000000000000000000000000000000000000
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000023
Arg [8] : 68747470733a2f2f6e66742e6d796e65696768626f72616c6963652e636f6d2f
Arg [9] : 69642f0000000000000000000000000000000000000000000000000000000000


Deployed ByteCode Sourcemap

72743:2690:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;41191:142;;;;;;;;;;;;;;;;-1:-1:-1;41191:142:0;-1:-1:-1;;;;;;41191:142:0;;:::i;:::-;;;;;;;;;;;;;;;;;;55712:92;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;58399:213;;;;;;;;;;;;;;;;-1:-1:-1;58399:213:0;;:::i;:::-;;;;-1:-1:-1;;;;;58399:213:0;;;;;;;;;;;;;;57943:390;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;57943:390:0;;;;;;;;:::i;:::-;;57437:203;;;:::i;:::-;;;;;;;;;;;;;;;;59273:305;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;59273:305:0;;;;;;;;;;;;;;;;;:::i;22060:114::-;;;;;;;;;;;;;;;;-1:-1:-1;22060:114:0;;:::i;22436:227::-;;;;;;;;;;;;;;;;-1:-1:-1;22436:227:0;;;;;;-1:-1:-1;;;;;22436:227:0;;:::i;57207:154::-;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;57207:154:0;;;;;;;;:::i;23645:209::-;;;;;;;;;;;;;;;;-1:-1:-1;23645:209:0;;;;;;-1:-1:-1;;;;;23645:209:0;;:::i;75050:185::-;;;:::i;59649:151::-;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;59649:151:0;;;;;;;;;;;;;;;;;:::i;68740:245::-;;;;;;;;;;;;;;;;-1:-1:-1;68740:245:0;;:::i;57717:164::-;;;;;;;;;;;;;;;;-1:-1:-1;57717:164:0;;:::i;70048:78::-;;;:::i;55476:169::-;;;;;;;;;;;;;;;;-1:-1:-1;55476:169:0;;:::i;74030:407::-;;;;;;;;;;;;;;;;-1:-1:-1;74030:407:0;-1:-1:-1;;;;;74030:407:0;;:::i;57034:89::-;;;:::i;55199:215::-;;;;;;;;;;;;;;;;-1:-1:-1;55199:215:0;-1:-1:-1;;;;;55199:215:0;;:::i;74652:179::-;;;:::i;21733:138::-;;;;;;;;;;;;;;;;-1:-1:-1;21733:138:0;;;;;;;:::i;20694:139::-;;;;;;;;;;;;;;;;-1:-1:-1;20694:139:0;;;;;;-1:-1:-1;;;;;20694:139:0;;:::i;55873:96::-;;;:::i;19439:49::-;;;:::i;58684:295::-;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;58684:295:0;;;;;;;;;;:::i;59871:285::-;;;;;;;;;;;;;;;;-1:-1:-1;;;;;59871:285:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;59871:285:0;;-1:-1:-1;59871:285:0;;-1:-1:-1;;;;;59871:285:0:i;56040:755::-;;;;;;;;;;;;;;;;-1:-1:-1;56040:755:0;;:::i;21007:127::-;;;;;;;;;;;;;;;;-1:-1:-1;21007:127:0;;:::i;72892:62::-;;;:::i;22908:230::-;;;;;;;;;;;;;;;;-1:-1:-1;22908:230:0;;;;;;-1:-1:-1;;;;;22908:230:0;;:::i;72961:62::-;;;:::i;59050:156::-;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;59050:156:0;;;;;;;;;;:::i;41191:142::-;-1:-1:-1;;;;;;41292:33:0;;41268:4;41292:33;;;:20;:33;;;;;;;;41191:142;;;;:::o;55712:92::-;55791:5;55784:12;;;;;;;;-1:-1:-1;;55784:12:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;55758:13;;55784:12;;55791:5;;55784:12;;55791:5;55784:12;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;55712:92;:::o;58399:213::-;58467:7;58495:16;58503:7;58495;:16::i;:::-;58487:73;;;;-1:-1:-1;;;58487:73:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;58580:24:0;;;;:15;:24;;;;;;-1:-1:-1;;;;;58580:24:0;;58399:213::o;57943:390::-;58024:13;58040:16;58048:7;58040;:16::i;:::-;58024:32;;58081:5;-1:-1:-1;;;;;58075:11:0;:2;-1:-1:-1;;;;;58075:11:0;;;58067:57;;;;-1:-1:-1;;;58067:57:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;58161:5;-1:-1:-1;;;;;58145:21:0;:12;:10;:12::i;:::-;-1:-1:-1;;;;;58145:21:0;;:62;;;;58170:37;58187:5;58194:12;:10;:12::i;:::-;58170:16;:37::i;:::-;58137:154;;;;-1:-1:-1;;;58137:154:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;58304:21;58313:2;58317:7;58304:8;:21::i;:::-;57943:390;;;:::o;57437:203::-;57490:7;57611:21;:12;:19;:21::i;:::-;57604:28;;57437:203;:::o;59273:305::-;59434:41;59453:12;:10;:12::i;:::-;59467:7;59434:18;:41::i;:::-;59426:103;;;;-1:-1:-1;;;59426:103:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;59542:28;59552:4;59558:2;59562:7;59542:9;:28::i;22060:114::-;22117:7;22144:12;;;;;;;;;;:22;;;;22060:114::o;22436:227::-;22528:6;:12;;;;;;;;;;:22;;;22520:45;;22552:12;:10;:12::i;:::-;22520:7;:45::i;:::-;22512:105;;;;-1:-1:-1;;;22512:105:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;22630:25;22641:4;22647:7;22630:10;:25::i;:::-;22436:227;;:::o;57207:154::-;-1:-1:-1;;;;;57323:20:0;;57296:7;57323:20;;;:13;:20;;;;;:30;;57347:5;57323:23;:30::i;:::-;57316:37;;57207:154;;;;;:::o;23645:209::-;23743:12;:10;:12::i;:::-;-1:-1:-1;;;;;23732:23:0;:7;-1:-1:-1;;;;;23732:23:0;;23724:83;;;;-1:-1:-1;;;23724:83:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23820:26;23832:4;23838:7;23820:11;:26::i;75050:185::-;75103:34;72999:24;75124:12;:10;:12::i;75103:34::-;75095:111;;;;-1:-1:-1;;;75095:111:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;75217:10;:8;:10::i;:::-;75050:185::o;59649:151::-;59753:39;59770:4;59776:2;59780:7;59753:39;;;;;;;;;;;;:16;:39::i;68740:245::-;68858:41;68877:12;:10;:12::i;68858:41::-;68850:102;;;;-1:-1:-1;;;68850:102:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;68963:14;68969:7;68963:5;:14::i;:::-;68740:245;:::o;57717:164::-;57784:7;;57826:22;:12;57842:5;57826:15;:22::i;:::-;-1:-1:-1;57804:44:0;57717:164;-1:-1:-1;;;57717:164:0:o;70048:78::-;70111:7;;;;70048:78;:::o;55476:169::-;55540:7;55567:70;55584:7;55567:70;;;;;;;;;;;;;;;;;:12;;:70;:16;:70::i;74030:407::-;74090:34;72930:24;74111:12;:10;:12::i;74090:34::-;74082:108;;;;-1:-1:-1;;;74082:108:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;74355:36;74361:2;74365:25;:15;:23;:25::i;:::-;74355:5;:36::i;:::-;74402:27;:15;:25;:27::i;57034:89::-;57107:8;57100:15;;;;;;;;-1:-1:-1;;57100:15:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;57074:13;;57100:15;;57107:8;;57100:15;;57107:8;57100:15;;;;;;;;;;;;;;;;;;;;;;;;55199:215;55263:7;-1:-1:-1;;;;;55291:19:0;;55283:74;;;;-1:-1:-1;;;55283:74:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;55377:20:0;;;;;;:13;:20;;;;;:29;;:27;:29::i;74652:179::-;74703:34;72999:24;74724:12;:10;:12::i;74703:34::-;74695:109;;;;-1:-1:-1;;;74695:109:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;74815:8;:6;:8::i;21733:138::-;21806:7;21833:12;;;;;;;;;;:30;;21857:5;21833:23;:30::i;20694:139::-;20763:4;20787:12;;;;;;;;;;:38;;20817:7;20787:29;:38::i;55873:96::-;55954:7;55947:14;;;;;;;;-1:-1:-1;;55947:14:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;55921:13;;55947:14;;55954:7;;55947:14;;55954:7;55947:14;;;;;;;;;;;;;;;;;;;;;;;;19439:49;19484:4;19439:49;:::o;58684:295::-;58799:12;:10;:12::i;:::-;-1:-1:-1;;;;;58787:24:0;:8;-1:-1:-1;;;;;58787:24:0;;;58779:62;;;;;-1:-1:-1;;;58779:62:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;58899:8;58854:18;:32;58873:12;:10;:12::i;:::-;-1:-1:-1;;;;;58854:32:0;;;;;;;;;;;;;;;;;-1:-1:-1;58854:32:0;;;:42;;;;;;;;;;;;:53;;-1:-1:-1;;58854:53:0;;;;;;;;;;;58938:12;:10;:12::i;:::-;-1:-1:-1;;;;;58923:48:0;;58962:8;58923:48;;;;;;;;;;;;;;;;;;;;58684:295;;:::o;59871:285::-;60003:41;60022:12;:10;:12::i;:::-;60036:7;60003:18;:41::i;:::-;59995:103;;;;-1:-1:-1;;;59995:103:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;60109:39;60123:4;60129:2;60133:7;60142:5;60109:13;:39::i;:::-;59871:285;;;;:::o;56040:755::-;56105:13;56139:16;56147:7;56139;:16::i;:::-;56131:76;;;;-1:-1:-1;;;56131:76:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;56246:19;;;;:10;:19;;;;;;;;;56220:45;;;;;;-1:-1:-1;;56220:45:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:23;;:45;;;56246:19;56220:45;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;56347:8:0;56341:22;56220:45;;-1:-1:-1;;;;56341:22:0;-1:-1:-1;;56341:22:0;;;;;;;;;;;56337:76;;56392:9;-1:-1:-1;56385:16:0;;56337:76;56517:23;;:27;56513:112;;56592:8;56602:9;56575:37;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;56575:37:0;;;;;;;;;;;;;;;;;;;-1:-1:-1;;56575:37:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;56561:52;;;;;56513:112;56757:8;56767:18;:7;:16;:18::i;:::-;56740:46;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;56740:46:0;;;;;;;;;;;;;;;;;;;-1:-1:-1;;56740:46:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;56726:61;;;56040:755;;;:::o;21007:127::-;21070:7;21097:12;;;;;;;;;;:29;;:27;:29::i;72892:62::-;72930:24;72892:62;:::o;22908:230::-;23001:6;:12;;;;;;;;;;:22;;;22993:45;;23025:12;:10;:12::i;22993:45::-;22985:106;;;;-1:-1:-1;;;22985:106:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;72961:62;72999:24;72961:62;:::o;59050:156::-;-1:-1:-1;;;;;59163:25:0;;;59139:4;59163:25;;;:18;:25;;;;;;;;:35;;;;;;;;;;;;;;;59050:156::o;6786:143::-;6856:4;6880:41;6885:3;-1:-1:-1;;;;;6905:14:0;;6880:4;:41::i;61623:119::-;61680:4;61704:30;:12;61726:7;61704:21;:30::i;17409:106::-;17497:10;17409:106;:::o;67450:158::-;67516:24;;;;:15;:24;;;;;:29;;-1:-1:-1;;;;;;67516:29:0;-1:-1:-1;;;;;67516:29:0;;;;;;;;:24;;67570:16;67516:24;67570:7;:16::i;:::-;-1:-1:-1;;;;;67561:39:0;;;;;;;;;;;67450:158;;:::o;49180:123::-;49249:7;49276:19;49284:3;49276:7;:19::i;61909:333::-;61994:4;62019:16;62027:7;62019;:16::i;:::-;62011:73;;;;-1:-1:-1;;;62011:73:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;62095:13;62111:16;62119:7;62111;:16::i;:::-;62095:32;;62157:5;-1:-1:-1;;;;;62146:16:0;:7;-1:-1:-1;;;;;62146:16:0;;:51;;;;62190:7;-1:-1:-1;;;;;62166:31:0;:20;62178:7;62166:11;:20::i;:::-;-1:-1:-1;;;;;62166:31:0;;62146:51;:87;;;;62201:32;62218:5;62225:7;62201:16;:32::i;:::-;62138:96;61909:333;-1:-1:-1;;;;61909:333:0:o;64998:574::-;65116:4;-1:-1:-1;;;;;65096:24:0;:16;65104:7;65096;:16::i;:::-;-1:-1:-1;;;;;65096:24:0;;65088:78;;;;-1:-1:-1;;;65088:78:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;65185:16:0;;65177:65;;;;-1:-1:-1;;;65177:65:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;65255:39;65276:4;65282:2;65286:7;65255:20;:39::i;:::-;65359:29;65376:1;65380:7;65359:8;:29::i;:::-;-1:-1:-1;;;;;65401:19:0;;;;;;:13;:19;;;;;:35;;65428:7;65401:26;:35::i;:::-;-1:-1:-1;;;;;;65447:17:0;;;;;;:13;:17;;;;;:30;;65469:7;65447:21;:30::i;:::-;-1:-1:-1;65490:29:0;:12;65507:7;65516:2;65490:16;:29::i;:::-;;65556:7;65552:2;-1:-1:-1;;;;;65537:27:0;65546:4;-1:-1:-1;;;;;65537:27:0;;;;;;;;;;;64998:574;;;:::o;24888:188::-;24962:6;:12;;;;;;;;;;:33;;24987:7;24962:24;:33::i;:::-;24958:111;;;25044:12;:10;:12::i;:::-;-1:-1:-1;;;;;25017:40:0;25035:7;-1:-1:-1;;;;;25017:40:0;25029:4;25017:40;;;;;;;;;;24888:188;;:::o;9664:137::-;9735:7;9770:22;9774:3;9786:5;9770:3;:22::i;25084:192::-;25159:6;:12;;;;;;;;;;:36;;25187:7;25159:27;:36::i;:::-;25155:114;;;25244:12;:10;:12::i;:::-;-1:-1:-1;;;;;25217:40:0;25235:7;-1:-1:-1;;;;;25217:40:0;25229:4;25217:40;;;;;;;;;;25084:192;;:::o;71097:120::-;70642:7;;;;70634:40;;;;;-1:-1:-1;;;70634:40:0;;;;;;;;;;;;-1:-1:-1;;;70634:40:0;;;;;;;;;;;;;;;71156:7:::1;:15:::0;;-1:-1:-1;;71156:15:0::1;::::0;;71187:22:::1;71196:12;:10;:12::i;:::-;71187:22;::::0;;-1:-1:-1;;;;;71187:22:0;;::::1;::::0;;;;;;;::::1;::::0;;::::1;71097:120::o:0;64141:520::-;64201:13;64217:16;64225:7;64217;:16::i;:::-;64201:32;;64246:48;64267:5;64282:1;64286:7;64246:20;:48::i;:::-;64335:29;64352:1;64356:7;64335:8;:29::i;:::-;64423:19;;;;:10;:19;;;;;64417:33;;-1:-1:-1;;64417:33:0;;;;;;;;;;;:38;64413:97;;64479:19;;;;:10;:19;;;;;64472:26;;;:::i;:::-;-1:-1:-1;;;;;64522:20:0;;;;;;:13;:20;;;;;:36;;64550:7;64522:27;:36::i;:::-;-1:-1:-1;64571:28:0;:12;64591:7;64571:19;:28::i;:::-;-1:-1:-1;64617:36:0;;64645:7;;64641:1;;-1:-1:-1;;;;;64617:36:0;;;;;64641:1;;64617:36;64141:520;;:::o;49642:227::-;49722:7;;;;49782:22;49786:3;49798:5;49782:3;:22::i;:::-;49751:53;;;;-1:-1:-1;49642:227:0;-1:-1:-1;;;;;49642:227:0:o;50304:204::-;50411:7;50454:44;50459:3;50479;50485:12;50454:4;:44::i;:::-;50446:53;-1:-1:-1;50304:204:0;;;;;;:::o;31739:114::-;31831:14;;31739:114::o;63508:404::-;-1:-1:-1;;;;;63588:16:0;;63580:61;;;;;-1:-1:-1;;;63580:61:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;63661:16;63669:7;63661;:16::i;:::-;63660:17;63652:58;;;;;-1:-1:-1;;;63652:58:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;63723:45;63752:1;63756:2;63760:7;63723:20;:45::i;:::-;-1:-1:-1;;;;;63781:17:0;;;;;;:13;:17;;;;;:30;;63803:7;63781:21;:30::i;:::-;-1:-1:-1;63824:29:0;:12;63841:7;63850:2;63824:16;:29::i;:::-;-1:-1:-1;63871:33:0;;63896:7;;-1:-1:-1;;;;;63871:33:0;;;63888:1;;63871:33;;63888:1;;63871:33;63508:404;;:::o;31861:181::-;32015:19;;32033:1;32015:19;;;31861:181::o;70838:118::-;70366:7;;;;70365:8;70357:37;;;;;-1:-1:-1;;;70357:37:0;;;;;;;;;;;;-1:-1:-1;;;70357:37:0;;;;;;;;;;;;;;;70898:7:::1;:14:::0;;-1:-1:-1;;70898:14:0::1;70908:4;70898:14;::::0;;70928:20:::1;70935:12;:10;:12::i;7340:158::-:0;7420:4;7444:46;7454:3;-1:-1:-1;;;;;7474:14:0;;7444:9;:46::i;61038:272::-;61152:28;61162:4;61168:2;61172:7;61152:9;:28::i;:::-;61199:48;61222:4;61228:2;61232:7;61241:5;61199:22;:48::i;:::-;61191:111;;;;-1:-1:-1;;;61191:111:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;50730:744;50786:13;51007:10;51003:53;;-1:-1:-1;51034:10:0;;;;;;;;;;;;-1:-1:-1;;;51034:10:0;;;;;;51003:53;51081:5;51066:12;51122:78;51129:9;;51122:78;;51155:8;;51186:2;51178:10;;;;51122:78;;;51210:19;51242:6;51232:17;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;51232:17:0;-1:-1:-1;51304:5:0;;-1:-1:-1;51210:39:0;-1:-1:-1;;;51276:10:0;;51320:115;51327:9;;51320:115;;51394:2;51387:4;:9;51382:2;:14;51371:27;;51353:6;51360:7;;;;;;;51353:15;;;;;;;;;;;:45;-1:-1:-1;;;;;51353:45:0;;;;;;;;-1:-1:-1;51421:2:0;51413:10;;;;51320:115;;;-1:-1:-1;51459:6:0;50730:744;-1:-1:-1;;;;50730:744:0:o;1850:414::-;1913:4;1935:21;1945:3;1950:5;1935:9;:21::i;:::-;1930:327;;-1:-1:-1;1973:23:0;;;;;;;;:11;:23;;;;;;;;;;;;;2156:18;;2134:19;;;:12;;;:19;;;;;;:40;;;;2189:11;;1930:327;-1:-1:-1;2240:5:0;2233:12;;48941:151;49025:4;49049:35;49059:3;49079;49049:9;:35::i;75243:187::-;75377:45;75404:4;75410:2;75414:7;75377:26;:45::i;8751:137::-;8821:4;8845:35;8853:3;8873:5;8845:7;:35::i;8444:131::-;8511:4;8535:32;8540:3;8560:5;8535:4;:32::i;48373:176::-;48462:4;48486:55;48491:3;48511;-1:-1:-1;;;;;48525:14:0;;48486:4;:55::i;4738:204::-;4833:18;;4805:7;;4833:26;-1:-1:-1;4825:73:0;;;;-1:-1:-1;;;4825:73:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;4916:3;:11;;4928:5;4916:18;;;;;;;;;;;;;;;;4909:25;;4738:204;;;;:::o;7105:149::-;7178:4;7202:44;7210:3;-1:-1:-1;;;;;7230:14:0;;7202:7;:44::i;48715:142::-;48792:4;48816:33;48824:3;48844;48816:7;:33::i;47028:279::-;47132:19;;47095:7;;;;47132:27;-1:-1:-1;47124:74:0;;;;-1:-1:-1;;;47124:74:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;47211:22;47236:3;:12;;47249:5;47236:19;;;;;;;;;;;;;;;;;;47211:44;;47274:5;:10;;;47286:5;:12;;;47266:33;;;;;47028:279;;;;;:::o;47730:319::-;47824:7;47863:17;;;:12;;;:17;;;;;;47914:12;47899:13;47891:36;;;;-1:-1:-1;;;47891:36:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;47981:3;:12;;48005:1;47994:8;:12;47981:26;;;;;;;;;;;;;;;;;;:33;;;47974:40;;;47730:319;;;;;:::o;4070:129::-;4143:4;4167:19;;;:12;;;;;:19;;;;;;:24;;;4070:129::o;66838:604::-;66959:4;66986:15;:2;-1:-1:-1;;;;;66986:13:0;;:15::i;:::-;66981:60;;-1:-1:-1;67025:4:0;67018:11;;66981:60;67051:23;67077:252;-1:-1:-1;;;67190:12:0;:10;:12::i;:::-;67217:4;67236:7;67258:5;67093:181;;;;;;-1:-1:-1;;;;;67093:181:0;;;;;;-1:-1:-1;;;;;67093:181:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;67093:181:0;;;;;;;-1:-1:-1;;;;;67093:181:0;;;;;;;;;;;67077:252;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;67077:15:0;;;:252;:15;:252::i;:::-;67051:278;;67340:13;67367:10;67356:32;;;;;;;;;;;;;;;-1:-1:-1;67356:32:0;-1:-1:-1;;;;;;67407:26:0;-1:-1:-1;;;67407:26:0;;-1:-1:-1;;;66838:604:0;;;;;;:::o;71785:241::-;71895:45;71922:4;71928:2;71932:7;71895:26;:45::i;:::-;71962:8;:6;:8::i;:::-;71961:9;71953:65;;;;-1:-1:-1;;;71953:65:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;2440:1544;2506:4;2645:19;;;:12;;;:19;;;;;;2681:15;;2677:1300;;3116:18;;-1:-1:-1;;3067:14:0;;;;3116:22;;;;3043:21;;3116:3;;:22;;3403;;;;;;;;;;;;;;3383:42;;3549:9;3520:3;:11;;3532:13;3520:26;;;;;;;;;;;;;;;;;;;:38;;;;3626:23;;;3668:1;3626:12;;;:23;;;;;;3652:17;;;3626:43;;3778:17;;3626:3;;3778:17;;;;;;;;;;;;;;;;;;;;;;3873:3;:12;;:19;3886:5;3873:19;;;;;;;;;;;3866:26;;;3916:4;3909:11;;;;;;;;2677:1300;3960:5;3953:12;;;;;43843:692;43919:4;44054:17;;;:12;;;:17;;;;;;44088:13;44084:444;;-1:-1:-1;;44173:38:0;;;;;;;;;;;;;;;;;;44155:57;;;;;;;;:12;:57;;;;;;;;;;;;;;;;;;;;;;;;44370:19;;44350:17;;;:12;;;:17;;;;;;;:39;44404:11;;44084:444;44484:5;44448:3;:12;;44472:1;44461:8;:12;44448:26;;;;;;;;;;;;;;;;;;:33;;:41;;;;44511:5;44504:12;;;;;44710:1549;44774:4;44909:17;;;:12;;;:17;;;;;;44943:13;;44939:1313;;45375:19;;-1:-1:-1;;45328:12:0;;;;45375:23;;;;45304:21;;45375:3;;:23;;45672;;;;;;;;;;;;;;;;45643:52;;45820:9;45790:3;:12;;45803:13;45790:27;;;;;;;;;;;;;;;;:39;;:27;;;;;:39;;;;;;;;;;;;;;;45910:14;;45897:28;;:12;;;:28;;;;;45928:17;;;45897:48;;46054:18;;45897:3;;46054:18;;;;;;;;;;;;;;-1:-1:-1;;46054:18:0;;;;;;;;;;;;;;;;;;;;;46150:17;;;:12;;;:17;;;;;;46143:24;;;;46054:18;-1:-1:-1;46184:11:0;;-1:-1:-1;;;;46184:11:0;10551:422;10918:20;10957:8;;;10551:422::o;13469:195::-;13572:12;13604:52;13626:6;13634:4;13640:1;13643:12;13572;14773:18;14784:6;14773:10;:18::i;:::-;14765:60;;;;;-1:-1:-1;;;14765:60:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;14899:12;14913:23;14940:6;-1:-1:-1;;;;;14940:11:0;14960:5;14968:4;14940:33;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;14940:33:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;14898:75;;;;14991:52;15009:7;15018:10;15030:12;14991:17;:52::i;:::-;14984:59;14521:530;-1:-1:-1;;;;;;;14521:530:0:o;16057:742::-;16172:12;16201:7;16197:595;;;-1:-1:-1;16232:10:0;16225:17;;16197:595;16346:17;;:21;16342:439;;16609:10;16603:17;16670:15;16657:10;16653:2;16649:19;16642:44;16557:148;16745:20;;-1:-1:-1;;;16745:20:0;;;;;;;;;;;;;;;;;16752:12;;16745:20;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::o

Swarm Source

ipfs://00e504e0884e103614f8b58d0ca98b483f6b2f091b425b8f8513fdc38937ef4e
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
Loading
Loading
Make sure to use the "Vote Down" button for any spammy posts, and the "Vote Up" for interesting conversations.