Contract 0x327612aCA8E619fe11bfA3dCb0a0c2C8B8688244

 
 
Txn Hash
Method
Block
From
To
Value
0xf6e887fd84e9b5770559075d47a59c291f201f213c37ec2856d70f2a80d3adddApprove And Call153114182022-08-10 1:19:1823 hrs 1 min ago0x1a444cda2f7bbe5679ab96a6f5afc546b1b1d4d0 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00086332 10.66696515
0x8dc59e2f0af79021a586deace1bcc170387e36606a254c9c0d56259ce94a8695Approve And Call153086292022-08-09 14:50:001 day 9 hrs ago0x4f9a0ac6b0b2668f11a82ccc8b1e7dd389a349cd IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00283818 30.00065524
0x65c5ac164c3932d11a4926c600179e67c67ff44d7e7223dc9330afa3e75cd450Approve And Call153077302022-08-09 11:31:021 day 12 hrs ago0x9ca9267541ce7e873085b99c296ab1501d4bac97 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00117247 14.48858135
0x625e915a0804fb4ae716e91188e095a7b729192dfdbe5c866d3e7a50b2053395Approve And Call153052772022-08-09 2:14:431 day 22 hrs ago0x051baa6516f4f9a1756d79837a2ad2983a5c6fe5 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00218875 25.26405929
0x9512ee5dfeddf6a00d600dff5663033fe9d21cabb7bcfd530167bd71cb5db875Approve And Call153052772022-08-09 2:14:431 day 22 hrs ago0x051baa6516f4f9a1756d79837a2ad2983a5c6fe5 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00239008 25.26405929
0x34160dada7435e7c5533dd01ab98c40294af0efa3601f7f36b36527459713045Approve And Call152996922022-08-08 5:20:202 days 19 hrs ago0xb86675529e8e6b0fe3b87d3abe3dc73ec7cbfd44 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00067506 7.13489223
0x00df846c13ee00963ff9a45f9501db8a7324ee2281b335556e243568375a6c2bApprove And Call152941332022-08-07 8:38:023 days 15 hrs ago0x81706ec51c5ef0fc007cf93cf95a11e292e84ba8 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00063897 6.75480768
0xb0252033720047f36eb2bb48af74b85e56ab1f8323a6b9567a2026cc5dea7512Approve And Call152784392022-08-04 22:08:526 days 2 hrs ago0xe5aeca5fd7ebaaca75d0b8c56f91fe98768826a8 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00084834 10.48442058
0xd0ad5df0329f4781a8af40636303366477e89c312f1d54e310c3020fbd6f4593Approve And Call152615752022-08-02 6:52:508 days 17 hrs ago0x2fbef3f59174943412d5f510beab1aa18bb05725 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00077511 8.19407294
0x47eac00fb1fe617c7d0255ac80060b6f65ad259cd4654a4d9a9f14c81f22dedbApprove And Call152499192022-07-31 11:17:1810 days 13 hrs ago0xea37bcdc596e99b5a52a152db740d54e5eb5bc9c IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00064804 6.84862789
0x9c7e1e54ac95ad17f64fddb4180b072d5981fb58a4afb4f0e8ec16eebec80556Approve And Call152289932022-07-28 5:06:0813 days 19 hrs ago0xb93ce5d5b1eca56cfc7fd32fba2b3d6f4d0e3856 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00138488 14.64012293
0xc7a3d02506322619d97559cf86472c3c253ed3b705ccce8d996d3b668e397eb4Approve And Call151868282022-07-21 15:54:0020 days 8 hrs ago0x11f482a9331dded24db5bfb2cd433aaddf3e3315 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00159051 19.64962557
0xba4481b6f94212480b9ff70b223ea0430206479af783a860da849d2e448928c7Approve And Call151728942022-07-19 11:47:4022 days 12 hrs agoENS Name jkleviathan.eth IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00420661 51.96948915
0x19679b9d7f30fcd746a77763842a2333c7b91af855adfc96a2396cfe5706f72bTransfer151456392022-07-15 6:31:0126 days 17 hrs ago0xcd9c21aa3e33b411c22c9120ff4518dbf7daf8e8 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00048346 13.15362765
0xd3ea1a3358682dcaf47cd129ddc43183404df2b77f79dd3f56388822357b1fc6Approve And Call151227012022-07-11 17:35:0530 days 6 hrs ago0x8b8a749bae7ae0b2be16f089075e287d54c860f5 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00314045 33.19892857
0x6b145364c555a71171c30f2c3aa9fe3f5320983514b4b8dd3aac397bf3960816Approve And Call151191362022-07-11 4:13:4930 days 20 hrs ago0x0b8e2d1409a9543e96387aead6c7fe770ce98a27 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.0014583 15.41627917
0x3419a94641885f4e05009c3dd25d03f93c64d7177911928b5f64bf0e5e98bc17Approve And Call150958482022-07-07 13:57:3034 days 10 hrs ago0x3f77a9f13b8dd72470594e35aad0a1cb9cd30bf6 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00316612 33.47030593
0xdb8f80c16a9c425dcb74ee6f8d2a0310fb43c76b97afad1a9fe3c2ef4a77a6b3Approve And Call150622402022-07-02 9:13:5639 days 15 hrs ago0x704e6c2d1b4ec81d6a58723cd5c765f2428f4b85 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00094131 11.62919385
0x01d0f6a4f28b25304c54e847ffc7d0e56eea62c0348b2f2f38a9466349eaa06bApprove And Call150599802022-07-02 1:09:1739 days 23 hrs agoENS Name pala.eth IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00146286 15.45977863
0x24c9544628087e715471c434b113e3dd8bf2c9abbb484d56421da6d446fb2782Approve And Call149710722022-06-16 3:04:3355 days 21 hrs ago0x6a4b25c58173976c4a2bd2151028c3759a1eadd3 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00274343 28.9991748
0x1b62dffc269bafdc2e598569f877fd1e366b277635e9c53f940f062e9147a8bcApprove And Call149662662022-06-15 7:18:4456 days 17 hrs ago0x9ca9267541ce7e873085b99c296ab1501d4bac97 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00252912 31.24923638
0xc1a757d722a418f7ed6f5ef29135761442a334157326a89cd8b48b5beb0eaa68Approve And Call149442122022-06-11 12:20:2960 days 12 hrs ago0xc99d60f324db2986033973b557ed4538d941d6fa IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00345519 36.52619544
0x6e0a7cc5fd0d7d0fc340b80741d203395ef7016de9ebe1f53672467bc40e6b91Transfer149252142022-06-08 6:27:3863 days 17 hrs ago0xebf2041afd24e067480facac91c2b970f3ae420d IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00149735 46.84072888
0x799c414c1fdc0881a87fc10058649384ea549a82c8a2538ada3210f1b6508804Approve And Call149138622022-06-06 8:04:4665 days 16 hrs ago0xc5568d48ccbef2e4960ce210e2796435b2f9bd92 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00188389 23.28238954
0xe407f03dd9e47e73ae510ab95b7f6d6ef26bfdbdb0ec2cb029fd1ca8d2aecfebApprove And Call149118742022-06-05 23:46:3666 days 34 mins ago0x5d327c7e1f99d307e74a615818303a553688c3f9 IN  0x327612aca8e619fe11bfa3dcb0a0c2c8b86882440 Ether0.00450839 47.65998704
[ Download CSV Export 
View more zero value Internal Transactions in Advanced View mode
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
Token

Compiler Version
v0.8.5+commit.a4f2e591

Optimization Enabled:
Yes with 999 runs

Other Settings:
default evmVersion
File 1 of 23 : ERC20OnApprove.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { ERC165 } from "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import { ERC165Checker } from "@openzeppelin/contracts/utils/introspection/ERC165Checker.sol";
import { ERC165Storage } from "@openzeppelin/contracts/utils/introspection/ERC165Storage.sol";
import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";

abstract contract OnApprove is ERC165Storage {
    constructor() {
        _registerInterface(OnApprove(this).onApprove.selector);
    }

    function onApprove(
        address owner,
        address spender,
        uint256 amount,
        bytes calldata data
    ) external virtual returns (bool);
}

abstract contract ERC20OnApprove is ERC20 {
    function approveAndCall(
        address spender,
        uint256 amount,
        bytes calldata data
    ) external returns (bool) {
        require(approve(spender, amount), "ERC20OnApprove: fail to approve");
        _callOnApprove(msg.sender, spender, amount, data);
        return true;
    }

    function _callOnApprove(
        address owner,
        address spender,
        uint256 amount,
        bytes memory data
    ) internal {
        bytes4 onApproveSelector = OnApprove(spender).onApprove.selector;

        require(
            ERC165Checker.supportsInterface(spender, onApproveSelector),
            "ERC20OnApprove: spender doesn't support onApprove"
        );

        (bool ok, bytes memory res) =
            spender.call(abi.encodeWithSelector(onApproveSelector, owner, spender, amount, data));

        // check if low-level call reverted or not
        require(ok, string(res));

        assembly {
            ok := mload(add(res, 0x20))
        }

        // check if OnApprove.onApprove returns true or false
        require(ok, "ERC20OnApprove: failed to call onApprove");
    }
}

File 2 of 23 : Token.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import { ERC20Pausable } from "@openzeppelin/contracts/token/ERC20/extensions/ERC20Pausable.sol";

import { ERC20PresetMinterPauser } from "@openzeppelin/contracts/token/ERC20/presets/ERC20PresetMinterPauser.sol";

import { ERC20Permit } from "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol";

import { ERC20OnApprove } from "./ERC20OnApprove.sol";

contract Token is ERC20PresetMinterPauser, ERC20Permit, ERC20OnApprove {
    bytes32 public constant MINTER_ADMIN_ROLE = keccak256("MINTER_ADMIN_ROLE");
    bytes32 public constant PAUSER_ADMIN_ROLE = keccak256("PAUSER_ADMIN_ROLE");

    constructor(
        string memory name_,
        string memory symbol_,
        uint256 initialSupply_
    ) ERC20PresetMinterPauser(name_, symbol_) ERC20Permit(name_) {
        _mint(_msgSender(), initialSupply_);

        _setRoleAdmin(MINTER_ROLE, MINTER_ADMIN_ROLE);
        _setRoleAdmin(PAUSER_ROLE, PAUSER_ADMIN_ROLE);

        _setupRole(MINTER_ADMIN_ROLE, _msgSender());
        _setupRole(PAUSER_ADMIN_ROLE, _msgSender());
    }

    /**
     * @dev change DEFAULT_ADMIN_ROLE to `account`.
     *      To revoke DEFAULT_ADMIN_ROLE, use `revokeRole(DEFAULT_ADMIN_ROLE, account)`
     */
    function changeAdminRole(address account) external {
        require(account != address(0), "Token: zero-address");
        changeRole(DEFAULT_ADMIN_ROLE, account);
    }

    /**
     * @dev grant and revoke `role` to `account`
     */
    function changeRole(bytes32 role, address account) public {
        grantRole(role, account);
        revokeRole(role, _msgSender());
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal override(ERC20, ERC20PresetMinterPauser) {
        super._beforeTokenTransfer(from, to, amount);
    }

    function getChainId() external view returns (uint256) {
        return block.chainid;
    }
}

File 3 of 23 : AccessControl.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    function hasRole(bytes32 role, address account) external view returns (bool);
    function getRoleAdmin(bytes32 role) external view returns (bytes32);
    function grantRole(bytes32 role, address account) external;
    function revokeRole(bytes32 role, address account) external;
    function renounceRole(bytes32 role, address account) external;
}

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * 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, IAccessControl, ERC165 {
    struct RoleData {
        mapping (address => bool) 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 Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId
            || super.supportsInterface(interfaceId);
    }

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

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/
     */
    function _checkRole(bytes32 role, address account) internal view {
        if(!hasRole(role, account)) {
            revert(string(abi.encodePacked(
                "AccessControl: account ",
                Strings.toHexString(uint160(account), 20),
                " is missing role ",
                Strings.toHexString(uint256(role), 32)
            )));
        }
    }

    /**
     * @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 override 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 override onlyRole(getRoleAdmin(role)) {
        _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 override onlyRole(getRoleAdmin(role)) {
        _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 override {
        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, getRoleAdmin(role), adminRole);
        _roles[role].adminRole = adminRole;
    }

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

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

File 4 of 23 : AccessControlEnumerable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./AccessControl.sol";
import "../utils/structs/EnumerableSet.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable {
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping (bytes32 => EnumerableSet.AddressSet) private _roleMembers;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlEnumerable).interfaceId
            || super.supportsInterface(interfaceId);
    }

    /**
     * @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 override returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @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 override returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {grantRole} to track enumerable memberships
     */
    function grantRole(bytes32 role, address account) public virtual override {
        super.grantRole(role, account);
        _roleMembers[role].add(account);
    }

    /**
     * @dev Overload {revokeRole} to track enumerable memberships
     */
    function revokeRole(bytes32 role, address account) public virtual override {
        super.revokeRole(role, account);
        _roleMembers[role].remove(account);
    }

    /**
     * @dev Overload {renounceRole} to track enumerable memberships
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        super.renounceRole(role, account);
        _roleMembers[role].remove(account);
    }

    /**
     * @dev Overload {_setupRole} to track enumerable memberships
     */
    function _setupRole(bytes32 role, address account) internal virtual override {
        super._setupRole(role, account);
        _roleMembers[role].add(account);
    }
}

File 5 of 23 : Pausable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/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 () {
        _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());
    }
}

File 6 of 23 : ERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The defaut value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

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

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

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

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

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        _approve(sender, _msgSender(), currentAllowance - amount);

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        _approve(_msgSender(), spender, currentAllowance - subtractedValue);

        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        _balances[sender] = senderBalance - amount;
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

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

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

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

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        _balances[account] = accountBalance - amount;
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

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

File 7 of 23 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

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

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

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

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

File 8 of 23 : ERC20Burnable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC20.sol";
import "../../../utils/Context.sol";

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `amount`.
     */
    function burnFrom(address account, uint256 amount) public virtual {
        uint256 currentAllowance = allowance(account, _msgSender());
        require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
        _approve(account, _msgSender(), currentAllowance - amount);
        _burn(account, amount);
    }
}

File 9 of 23 : ERC20Pausable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC20.sol";
import "../../../security/Pausable.sol";

/**
 * @dev ERC20 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 ERC20Pausable is ERC20, Pausable {
    /**
     * @dev See {ERC20-_beforeTokenTransfer}.
     *
     * Requirements:
     *
     * - the contract must not be paused.
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override {
        super._beforeTokenTransfer(from, to, amount);

        require(!paused(), "ERC20Pausable: token transfer while paused");
    }
}

File 10 of 23 : IERC20Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

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

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

File 11 of 23 : draft-ERC20Permit.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./draft-IERC20Permit.sol";
import "../ERC20.sol";
import "../../../utils/cryptography/draft-EIP712.sol";
import "../../../utils/cryptography/ECDSA.sol";
import "../../../utils/Counters.sol";

/**
 * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * _Available since v3.4._
 */
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
    using Counters for Counters.Counter;

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

    // solhint-disable-next-line var-name-mixedcase
    bytes32 private immutable _PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");

    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     * It's a good idea to use the same `name` that is defined as the ERC20 token name.
     */
    constructor(string memory name) EIP712(name, "1") {
    }

    /**
     * @dev See {IERC20Permit-permit}.
     */
    function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public virtual override {
        // solhint-disable-next-line not-rely-on-time
        require(block.timestamp <= deadline, "ERC20Permit: expired deadline");

        bytes32 structHash = keccak256(
            abi.encode(
                _PERMIT_TYPEHASH,
                owner,
                spender,
                value,
                _useNonce(owner),
                deadline
            )
        );

        bytes32 hash = _hashTypedDataV4(structHash);

        address signer = ECDSA.recover(hash, v, r, s);
        require(signer == owner, "ERC20Permit: invalid signature");

        _approve(owner, spender, value);
    }

    /**
     * @dev See {IERC20Permit-nonces}.
     */
    function nonces(address owner) public view virtual override returns (uint256) {
        return _nonces[owner].current();
    }

    /**
     * @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view override returns (bytes32) {
        return _domainSeparatorV4();
    }

    /**
     * @dev "Consume a nonce": return the current value and increment.
     *
     * _Available since v4.1._
     */
    function _useNonce(address owner) internal virtual returns (uint256 current) {
        Counters.Counter storage nonce = _nonces[owner];
        current = nonce.current();
        nonce.increment();
    }
}

File 12 of 23 : draft-IERC20Permit.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

File 13 of 23 : ERC20PresetMinterPauser.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC20.sol";
import "../extensions/ERC20Burnable.sol";
import "../extensions/ERC20Pausable.sol";
import "../../../access/AccessControlEnumerable.sol";
import "../../../utils/Context.sol";

/**
 * @dev {ERC20} 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
 *
 * 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 ERC20PresetMinterPauser is Context, AccessControlEnumerable, ERC20Burnable, ERC20Pausable {
    bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
    bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");

    /**
     * @dev Grants `DEFAULT_ADMIN_ROLE`, `MINTER_ROLE` and `PAUSER_ROLE` to the
     * account that deploys the contract.
     *
     * See {ERC20-constructor}.
     */
    constructor(string memory name, string memory symbol) ERC20(name, symbol) {
        _setupRole(DEFAULT_ADMIN_ROLE, _msgSender());

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

    /**
     * @dev Creates `amount` new tokens for `to`.
     *
     * See {ERC20-_mint}.
     *
     * Requirements:
     *
     * - the caller must have the `MINTER_ROLE`.
     */
    function mint(address to, uint256 amount) public virtual {
        require(hasRole(MINTER_ROLE, _msgSender()), "ERC20PresetMinterPauser: must have minter role to mint");
        _mint(to, amount);
    }

    /**
     * @dev Pauses all token transfers.
     *
     * See {ERC20Pausable} and {Pausable-_pause}.
     *
     * Requirements:
     *
     * - the caller must have the `PAUSER_ROLE`.
     */
    function pause() public virtual {
        require(hasRole(PAUSER_ROLE, _msgSender()), "ERC20PresetMinterPauser: must have pauser role to pause");
        _pause();
    }

    /**
     * @dev Unpauses all token transfers.
     *
     * See {ERC20Pausable} and {Pausable-_unpause}.
     *
     * Requirements:
     *
     * - the caller must have the `PAUSER_ROLE`.
     */
    function unpause() public virtual {
        require(hasRole(PAUSER_ROLE, _msgSender()), "ERC20PresetMinterPauser: must have pauser role to unpause");
        _unpause();
    }

    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override(ERC20, ERC20Pausable) {
        super._beforeTokenTransfer(from, to, amount);
    }
}

File 14 of 23 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity ^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 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) {
        return msg.sender;
    }

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

File 15 of 23 : Counters.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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;`
 */
library Counters {
    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 {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }
}

File 16 of 23 : Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant alphabet = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal 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);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = alphabet[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

}

File 17 of 23 : ECDSA.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        // Divide the signature in r, s and v variables
        bytes32 r;
        bytes32 s;
        uint8 v;

        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            // solhint-disable-next-line no-inline-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
        } else if (signature.length == 64) {
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            // solhint-disable-next-line no-inline-assembly
            assembly {
                let vs := mload(add(signature, 0x40))
                r := mload(add(signature, 0x20))
                s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
                v := add(shr(255, vs), 27)
            }
        } else {
            revert("ECDSA: invalid signature length");
        }

        return recover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value");
        require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value");

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        require(signer != address(0), "ECDSA: invalid signature");

        return signer;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

File 18 of 23 : draft-EIP712.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;
    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(bytes32 typeHash, bytes32 name, bytes32 version) private view returns (bytes32) {
        return keccak256(
            abi.encode(
                typeHash,
                name,
                version,
                block.chainid,
                address(this)
            )
        );
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

File 19 of 23 : ERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 20 of 23 : ERC165Checker.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Library used to query support of an interface declared via {IERC165}.
 *
 * Note that these functions return the actual result of the query: they do not
 * `revert` if an interface is not supported. It is up to the caller to decide
 * what to do in these cases.
 */
library ERC165Checker {
    // As per the EIP-165 spec, no interface should ever match 0xffffffff
    bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;

    /**
     * @dev Returns true if `account` supports the {IERC165} interface,
     */
    function supportsERC165(address account) internal view returns (bool) {
        // Any contract that implements ERC165 must explicitly indicate support of
        // InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid
        return _supportsERC165Interface(account, type(IERC165).interfaceId) &&
            !_supportsERC165Interface(account, _INTERFACE_ID_INVALID);
    }

    /**
     * @dev Returns true if `account` supports the interface defined by
     * `interfaceId`. Support for {IERC165} itself is queried automatically.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {
        // query support of both ERC165 as per the spec and support of _interfaceId
        return supportsERC165(account) &&
            _supportsERC165Interface(account, interfaceId);
    }

    /**
     * @dev Returns a boolean array where each value corresponds to the
     * interfaces passed in and whether they're supported or not. This allows
     * you to batch check interfaces for a contract where your expectation
     * is that some interfaces may not be supported.
     *
     * See {IERC165-supportsInterface}.
     *
     * _Available since v3.4._
     */
    function getSupportedInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool[] memory) {
        // an array of booleans corresponding to interfaceIds and whether they're supported or not
        bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);

        // query support of ERC165 itself
        if (supportsERC165(account)) {
            // query support of each interface in interfaceIds
            for (uint256 i = 0; i < interfaceIds.length; i++) {
                interfaceIdsSupported[i] = _supportsERC165Interface(account, interfaceIds[i]);
            }
        }

        return interfaceIdsSupported;
    }

    /**
     * @dev Returns true if `account` supports all the interfaces defined in
     * `interfaceIds`. Support for {IERC165} itself is queried automatically.
     *
     * Batch-querying can lead to gas savings by skipping repeated checks for
     * {IERC165} support.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {
        // query support of ERC165 itself
        if (!supportsERC165(account)) {
            return false;
        }

        // query support of each interface in _interfaceIds
        for (uint256 i = 0; i < interfaceIds.length; i++) {
            if (!_supportsERC165Interface(account, interfaceIds[i])) {
                return false;
            }
        }

        // all interfaces supported
        return true;
    }

    /**
     * @notice Query if a contract implements an interface, does not check ERC165 support
     * @param account The address of the contract to query for support of an interface
     * @param interfaceId The interface identifier, as specified in ERC-165
     * @return true if the contract at account indicates support of the interface with
     * identifier interfaceId, false otherwise
     * @dev Assumes that account contains a contract that supports ERC165, otherwise
     * the behavior of this method is undefined. This precondition can be checked
     * with {supportsERC165}.
     * Interface identification is specified in ERC-165.
     */
    function _supportsERC165Interface(address account, bytes4 interfaceId) private view returns (bool) {
        bytes memory encodedParams = abi.encodeWithSelector(IERC165(account).supportsInterface.selector, interfaceId);
        (bool success, bytes memory result) = account.staticcall{ gas: 30000 }(encodedParams);
        if (result.length < 32) return false;
        return success && abi.decode(result, (bool));
    }
}

File 21 of 23 : ERC165Storage.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./ERC165.sol";

/**
 * @dev Storage based implementation of the {IERC165} interface.
 *
 * Contracts may inherit from this and call {_registerInterface} to declare
 * their support of an interface.
 */
abstract contract ERC165Storage is ERC165 {
    /**
     * @dev Mapping of interface ids to whether or not it's supported.
     */
    mapping(bytes4 => bool) private _supportedInterfaces;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return super.supportsInterface(interfaceId) || _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 22 of 23 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^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 23 of 23 : EnumerableSet.sol
// SPDX-License-Identifier: MIT

pragma solidity ^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] = valueIndex; // Replace lastvalue's index to valueIndex

            // 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));
    }
}

Settings
{
  "remappings": [],
  "optimizer": {
    "enabled": true,
    "runs": 999
  },
  "evmVersion": "berlin",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"symbol_","type":"string"},{"internalType":"uint256","name":"initialSupply_","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","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":false,"internalType":"uint256","name":"value","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":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MINTER_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_ADMIN_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":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"approveAndCall","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burnFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"changeAdminRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"changeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getChainId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"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":"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":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

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

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

-----Decoded View---------------
Arg [0] : name_ (string): Ecosystem Development Changer Token
Arg [1] : symbol_ (string): ecoCNG
Arg [2] : initialSupply_ (uint256): 110000000000000000000000000

-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [2] : 0000000000000000000000000000000000000000005afd67f2dc0e1b2e000000
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000023
Arg [4] : 45636f73797374656d20446576656c6f706d656e74204368616e67657220546f
Arg [5] : 6b656e0000000000000000000000000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [7] : 65636f434e470000000000000000000000000000000000000000000000000000


Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
Loading
Loading
Make sure to use the "Vote Down" button for any spammy posts, and the "Vote Up" for interesting conversations.

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.