ETH Price: $3,889.90 (-0.87%)

Token

Evil Teddy Bear (EVIL_TEDDY_BEAR)
 

Overview

Max Total Supply

6,666 EVIL_TEDDY_BEAR

Holders

1,097

Market

Volume (24H)

N/A

Min Price (24H)

N/A

Max Price (24H)

N/A

Other Info

Filtered by Token Holder
catbus.eth
Balance
1 EVIL_TEDDY_BEAR
0x869568d4fd6cedebd5478488900eedaead0586c7
Loading...
Loading
Loading...
Loading
Loading...
Loading

OVERVIEW

Each Evil Teddy Bear is a unique digital collectible based on the Ethereum Blockchain as an ERC-721 Token.

# Exchange Pair Price  24H Volume % Volume

Contract Source Code Verified (Exact Match)

Contract Name:
EvilTeddyBear

Compiler Version
v0.7.3+commit.9bfce1f6

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 20 : EvilTeddyBear.sol
//SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;

import "@openzeppelin/contracts/presets/ERC721PresetMinterPauserAutoId.sol";

contract EvilTeddyBear is ERC721PresetMinterPauserAutoId {
    constructor(
        string memory name,
        string memory symbol,
        string memory baseURI
    ) ERC721PresetMinterPauserAutoId(name, symbol, baseURI) {}

    function setTokenURI(uint256 tokenId, string memory _tokenURI) external {
        require(
            hasRole(DEFAULT_ADMIN_ROLE, _msgSender()),
            "StrayCat: must have admin role"
        );
        super._setTokenURI(tokenId, _tokenURI);
    }

    function setBaseURI(string memory baseURI_) external {
        require(
            hasRole(DEFAULT_ADMIN_ROLE, _msgSender()),
            "StrayCat: must have admin role"
        );
        super._setBaseURI(baseURI_);
    }
}

File 2 of 20 : ERC721PresetMinterPauserAutoId.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../access/AccessControl.sol";
import "../utils/Context.sol";
import "../utils/Counters.sol";
import "../token/ERC721/ERC721.sol";
import "../token/ERC721/ERC721Burnable.sol";
import "../token/ERC721/ERC721Pausable.sol";

/**
 * @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);
    }
}

File 3 of 20 : AccessControl.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../utils/EnumerableSet.sol";
import "../utils/Address.sol";
import "../utils/Context.sol";

/**
 * @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 4 of 20 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/*
 * @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 5 of 20 : Counters.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../math/SafeMath.sol";

/**
 * @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 6 of 20 : ERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../../utils/Context.sol";
import "./IERC721.sol";
import "./IERC721Metadata.sol";
import "./IERC721Enumerable.sol";
import "./IERC721Receiver.sol";
import "../../introspection/ERC165.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";
import "../../utils/EnumerableSet.sol";
import "../../utils/EnumerableMap.sol";
import "../../utils/Strings.sol";

/**
 * @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 7 of 20 : ERC721Burnable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../../utils/Context.sol";
import "./ERC721.sol";

/**
 * @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 8 of 20 : ERC721Pausable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./ERC721.sol";
import "../../utils/Pausable.sol";

/**
 * @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 9 of 20 : EnumerableSet.sol
// 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(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));
    }
}

File 10 of 20 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @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);
            }
        }
    }
}

File 11 of 20 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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;
    }
}

File 12 of 20 : IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

import "../../introspection/IERC165.sol";

/**
 * @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 13 of 20 : IERC721Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

import "./IERC721.sol";

/**
 * @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 14 of 20 : IERC721Enumerable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

import "./IERC721.sol";

/**
 * @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 15 of 20 : IERC721Receiver.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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 16 of 20 : ERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./IERC165.sol";

/**
 * @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;
    }
}

File 17 of 20 : EnumerableMap.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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))));
    }
}

File 18 of 20 : Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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);
    }
}

File 19 of 20 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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 20 of 20 : Pausable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./Context.sol";

/**
 * @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 virtual 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());
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

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":"string","name":"baseURI_","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"string","name":"_tokenURI","type":"string"}],"name":"setTokenURI","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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

Deployed Bytecode

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

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

000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e0000000000000000000000000000000000000000000000000000000000000000f4576696c20546564647920426561720000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f4556494c5f54454444595f4245415200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : name (string): Evil Teddy Bear
Arg [1] : symbol (string): EVIL_TEDDY_BEAR
Arg [2] : baseURI (string):

-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [3] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [4] : 4576696c20546564647920426561720000000000000000000000000000000000
Arg [5] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [6] : 4556494c5f54454444595f424541520000000000000000000000000000000000
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000000


Loading...
Loading
Loading...
Loading
[ Download: CSV Export  ]
[ Download: CSV Export  ]

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.