Token

Bear Bums (BEARBUMS)

ERC-721

Overview

Max Total Supply

2,158 BEARBUMS

Holders

647

Market

Volume (24H)

N/A

Min Price (24H)

N/A

Max Price (24H)

N/A

Other Info

Token Contract

0xa34f0a68c6f31fb31f431da9217ed06a0656bfb6

Filtered by Token Holder

0xC15e03B787FBB2d73C928AC52767c795929309F8

Balance

6 BEARBUMS

0xC15e03B787FBB2d73C928AC52767c795929309F8

Click here to update the token information / general information

#	Exchange	Pair	Price	24H Volume	% Volume

Contract Source Code Verified (Exact Match)

Contract Name:

BearBums

Compiler Version

v0.7.6+commit.7338295f

Optimization Enabled:

Yes with 200 runs

Other Settings:

default evmVersion, None license

Contract Source Code (Solidity)

IDE

/**
 *Submitted for verification at Etherscan.io on 2021-08-10
*/

// SPDX-License-Identifier: NONE

pragma solidity 0.7.6;



// Part: OpenZeppelin/[email protected]/Address

/**
 * @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);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(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);
            }
        }
    }
}

// Part: OpenZeppelin/[email protected]/Context

/*
 * @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;
    }
}

// Part: OpenZeppelin/[email protected]/EnumerableMap

/**
 * @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 Tries to returns the value associated with `key`.  O(1).
     * Does not revert if `key` is not in the map.
     */
    function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
        uint256 keyIndex = map._indexes[key];
        if (keyIndex == 0) return (false, 0); // Equivalent to contains(map, key)
        return (true, map._entries[keyIndex - 1]._value); // All indexes are 1-based
    }

    /**
     * @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) {
        uint256 keyIndex = map._indexes[key];
        require(keyIndex != 0, "EnumerableMap: nonexistent key"); // Equivalent to contains(map, key)
        return map._entries[keyIndex - 1]._value; // All indexes are 1-based
    }

    /**
     * @dev Same as {_get}, with a custom error message when `key` is not in the map.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {_tryGet}.
     */
    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(uint160(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(uint160(uint256(value))));
    }

    /**
     * @dev Tries to returns the value associated with `key`.  O(1).
     * Does not revert if `key` is not in the map.
     *
     * _Available since v3.4._
     */
    function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
        (bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
        return (success, address(uint160(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(uint160(uint256(_get(map._inner, bytes32(key)))));
    }

    /**
     * @dev Same as {get}, with a custom error message when `key` is not in the map.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryGet}.
     */
    function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
        return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
    }
}

// Part: OpenZeppelin/[email protected]/EnumerableSet

/**
 * @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(uint160(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(uint160(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(uint160(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(uint160(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));
    }
}

// Part: OpenZeppelin/[email protected]/IERC165

/**
 * @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);
}

// Part: OpenZeppelin/[email protected]/IERC721Receiver

/**
 * @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);
}

// Part: OpenZeppelin/[email protected]/SafeMath

/**
 * @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, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, 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 (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @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) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @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) {
        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, reverting 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) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting 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) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * 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);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * 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);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * 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;
    }
}

// Part: OpenZeppelin/[email protected]/Strings

/**
 * @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--] = bytes1(uint8(48 + temp % 10));
            temp /= 10;
        }
        return string(buffer);
    }
}

// Part: OpenZeppelin/[email protected]/ERC165

/**
 * @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 virtual 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;
    }
}

// Part: OpenZeppelin/[email protected]/IERC721

/**
 * @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;
}

// Part: OpenZeppelin/[email protected]/Ownable

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

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

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

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

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// Part: OpenZeppelin/[email protected]/IERC721Enumerable

/**
 * @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);
}

// Part: OpenZeppelin/[email protected]/IERC721Metadata

/**
 * @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);
}

// Part: OpenZeppelin/[email protected]/ERC721

/**
 * @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 virtual 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 virtual override returns (address) {
        return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
    }

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

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

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

        string memory _tokenURI = _tokenURIs[tokenId];
        string memory base = baseURI();

        // If there is no base URI, return the token URI.
        if (bytes(base).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(base, _tokenURI));
        }
        // If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
        return string(abi.encodePacked(base, 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 virtual returns (string memory) {
        return _baseURI;
    }

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

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual 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 virtual 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 = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(_msgSender() == owner || ERC721.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 virtual 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 virtual 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 virtual 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 virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || ERC721.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 = ERC721.ownerOf(tokenId); // internal owner

        _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(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); // internal owner
        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(ERC721.ownerOf(tokenId), to, tokenId); // internal owner
    }

    /**
     * @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: BearBums.sol

/**
 * @title BEARBUMS contract
 * @dev Extends ERC721 Non-Fungible Token Standard basic implementation
 */
contract BearBums is ERC721, Ownable {
    using SafeMath for uint256;

    string public BEAR_PROVENANCE = "";

    uint256 public startingIndexBlock;

    uint256 public startingIndex;

    uint256 public constant bearprice = 80000000000000000; //0.08 ETH

    uint public constant maxBearPurchase = 20;

    uint256 public MAX_BEAR = 10000;

    bool public saleIsActive = false;

    uint256 public REVEAL_TIMESTAMP;

    constructor(string memory name, string memory symbol, uint256 maxNftSupply, uint256 saleStart) ERC721(name, symbol) {
        MAX_BEAR = maxNftSupply;
        REVEAL_TIMESTAMP = saleStart + (86400 * 9);
    }

    function withdraw() public onlyOwner {
        uint balance = address(this).balance;
        msg.sender.transfer(balance);
    }

    /**
     * Set some Bear Bums aside
     */
    function reserveBear(uint256 reservingCount) public onlyOwner {        
        require(totalSupply().add(reservingCount) <= MAX_BEAR, "Purchase would exceed max supply of Bears");

        uint supply = totalSupply();
        uint i;
        for (i = 0; i < reservingCount; i++) {
            _safeMint(msg.sender, supply + i);
        }
    }

    /**
     * DM Gargamel in Discord that you're standing right behind him.
     */
    function setRevealTimestamp(uint256 revealTimeStamp) public onlyOwner {
        REVEAL_TIMESTAMP = revealTimeStamp;
    } 

    /*     
    * Set provenance once it's calculated
    */
    function setProvenanceHash(string memory provenanceHash) public onlyOwner {
        BEAR_PROVENANCE = provenanceHash;
    }

    function setBaseURI(string memory baseURI) public onlyOwner {
        _setBaseURI(baseURI);
    }

    /*
    * Pause sale if active, make active if paused
    */
    function flipSaleState() public onlyOwner {
        saleIsActive = !saleIsActive;
    }

    /**
    * Mints BearBums
    */
    function mintBear(uint numberOfTokens) public payable {
        require(saleIsActive, "Sale must be active to mint Bear");
        require(numberOfTokens <= maxBearPurchase, "Can only mint 20 tokens at a time");
        require(totalSupply().add(numberOfTokens) <= MAX_BEAR, "Purchase would exceed max supply of Bears");
        require(bearprice.mul(numberOfTokens) <= msg.value, "Ether value sent is not correct");
        
        for(uint i = 0; i < numberOfTokens; i++) {
            uint mintIndex = totalSupply();
            if (totalSupply() < MAX_BEAR) {
                _safeMint(msg.sender, mintIndex);
            }
        }

        // If we haven't set the starting index and this is either 1) the last saleable token or 2) the first token to be sold after
        // the end of pre-sale, set the starting index block
        if (startingIndexBlock == 0 && (totalSupply() == MAX_BEAR || block.timestamp >= REVEAL_TIMESTAMP)) {
            startingIndexBlock = block.number;
        } 
    }

    /**
     * Set the starting index for the collection
     */
    function setStartingIndex() public {
        require(startingIndex == 0, "Starting index is already set");
        require(startingIndexBlock != 0, "Starting index block must be set");
        
        startingIndex = uint(blockhash(startingIndexBlock)) % MAX_BEAR;
        // Just a sanity case in the worst case if this function is called late (EVM only stores last 256 block hashes)
        if (block.number.sub(startingIndexBlock) > 255) {
            startingIndex = uint(blockhash(block.number - 1)) % MAX_BEAR;
        }
        // Prevent default sequence
        if (startingIndex == 0) {
            startingIndex = startingIndex.add(1);
        }
    }

    /**
     * Set the starting index block for the collection, essentially unblocking
     * setting starting index
     
     */
    function emergencySetStartingIndexBlock() public onlyOwner {
        require(startingIndex == 0, "Starting index is already set");
        
        startingIndexBlock = block.number;
    }
}

Contract Security Audit

No Contract Security Audit Submitted- Submit Audit Here

Contract ABI

[{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"uint256","name":"maxNftSupply","type":"uint256"},{"internalType":"uint256","name":"saleStart","type":"uint256"}],"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":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","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"},{"inputs":[],"name":"BEAR_PROVENANCE","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_BEAR","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"REVEAL_TIMESTAMP","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":[],"name":"bearprice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"emergencySetStartingIndexBlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"flipSaleState","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":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxBearPurchase","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"numberOfTokens","type":"uint256"}],"name":"mintBear","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"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":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"reservingCount","type":"uint256"}],"name":"reserveBear","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":[],"name":"saleIsActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"baseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"provenanceHash","type":"string"}],"name":"setProvenanceHash","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"revealTimeStamp","type":"uint256"}],"name":"setRevealTimestamp","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"setStartingIndex","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startingIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"startingIndexBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

Contract Creation Code

Decompile Bytecode Switch to Opcodes View

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

Deployed Bytecode

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

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

000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000c0000000000000000000000000000000000000000000000000000000000000271000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000009426561722042756d73000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000084245415242554d53000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : name (string): Bear Bums
Arg [1] : symbol (string): BEARBUMS
Arg [2] : maxNftSupply (uint256): 10000
Arg [3] : saleStart (uint256): 0

-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [2] : 0000000000000000000000000000000000000000000000000000000000002710
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [5] : 426561722042756d730000000000000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000008
Arg [7] : 4245415242554d53000000000000000000000000000000000000000000000000

A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.

Tools & Services