Contract 0xc40f949f8a4e094d1b49a23ea9241d289b7b2819 1

 

Contract Overview

Balance:
0 Ether

EtherValue:
$0.00
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0x36d34dab4c4f2d466b311e2cdef480a3366ce662f598e7664708f227642cacb5Approve137760702022-07-03 22:14:371 day 2 hrs ago0xa311ab5780aa036b71aac2b71163fd03ec0df59e IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0000567444140.001
0xca29d4cd0d46f3ef16bebffe0435a3e14c47d5e16a28cae7e74f73dbcee24e06Approve137015642022-07-02 15:08:272 days 9 hrs ago0xeaceb7f4cddb1177b752ef682ad7a0c5cd31fc05 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0002261241230.001
0xaded2a159528b5d8b57cd60a04895ea2e1008def9d9774b310378f062574657bApprove136605262022-07-01 23:58:133 days 37 mins ago0x2bdab32fc7285ea127cd72046d7a0f9c5bf0dcbc IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0000966468070.001
0xa6e2e0efb62eea52f47e58ddef13754bd75be6e534b36d8bf924fa5c40cfd35eApprove136219612022-07-01 11:10:213 days 13 hrs ago0x652880de887495f956bbf66e76c127b59791e510 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0000498360250.001
0x93c07661fe5f4def753a0fd8d2fc4a37f1cf7f5330ee3f79c42d61d0753d482cApprove136218082022-07-01 11:07:283 days 13 hrs ago0x652880de887495f956bbf66e76c127b59791e510 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0000763216230.001
0x50a27cb8b650e492b00e02256913db69ee021d6dd25f2cf147cdc8b4eea4f15aApprove135168642022-06-30 7:35:264 days 17 hrs ago0x040479ea0dd9499beff5b8e6b36948c91165ef38 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0001195045360.001
0x887c9fbc12fa2c410daa8743ff26a1420e48f523dd4b4cc7e011f9ec5bdde278Approve135045372022-06-30 3:52:404 days 20 hrs ago0xea04a9fe2cef51b504e7da8cf1b859454ae27030 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0001267664910.001
0x9320d64b7eab16e8755ed53002abc9bfc42c25d2cb8e56a40fe7771657b74af4Approve135023452022-06-30 2:55:554 days 21 hrs ago0x8bace3a49a375027868cdd34e84521eed1f1b01d IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0002597553230.001
0x1c140709573069fe2d99d9466aa4f6e642ea5276f6bb2981e09b069bd769975cApprove134765802022-06-29 17:34:205 days 7 hrs ago0x176e2042a510d00aa69aa02e5f24d438cc6d8ab2 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0005816648310.001
0x9a322a98d223968cea7af7fa6c741c1ff355c59a0af7115755beef279dbe8ce7Approve134695012022-06-29 15:34:595 days 9 hrs ago0xf4b93a76bfedbaa5dd58c37c438bde519e881b37 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0001948608930.001
0xa53d75e85041619abd53aa3219bd0a9c176f873f318f3b30f63be917e90a102fApprove134682422022-06-29 15:11:225 days 9 hrs ago0x65877be34c0c3c3a317d97028fd91bd261410026 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0002236483510.001
0xca3b42e9bae70f5fe258a132edd723d3a4f2dab726e2c6ad32498d6ed4584e74Approve134622152022-06-29 13:47:255 days 10 hrs ago0x722d69121d1ef0af34faa82ca26a34dd04df3d0b IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.000204441520.001
0xe9bea81308072201859fdf2c1e96e5e10b329fb0d3e1cd93f344e81293af20c2Approve133983522022-06-28 16:42:236 days 7 hrs ago0xc01a3b90d0a895f555ae806a1133f42ba904aaca IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0003048763710.001
0xf3fb8a6278e9373477473031395fa7ee16e55f3a18797d02c6463808c6be80e2Approve133578382022-06-28 3:09:176 days 21 hrs ago0x7f85cf44e446a4b1aace2a28774e88cd6d4e3441 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.000208022950.001
0x6b44c70c5f9f02b13bc4d43a6d948e2ad03a13134969e17fff6af72bf3033732Approve132630082022-06-27 9:34:487 days 15 hrs ago0x7fb5ca677b02467dd9164add75739cd29c28316c IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.000150496370.001
0x09ee422917d62d3d87602cb354608743b40984f0795061bd8a1cfd62d943d368Approve132620032022-06-27 9:24:537 days 15 hrs ago0x66029401dc14079a1b0cdbb77d6403cd2df27562 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0001055432690.0011
0x88c949278bd594f29a1cfd4bcd22efddc9423a80c0f25110d7f568be47eedd82Approve131701712022-06-26 16:31:198 days 8 hrs ago0x4f69c39fe8e37b0b4d9b439a05f89c25f2c658d3 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0002448512490.001
0x33364e855482cec1bf2a5f50c28f2c336a94f975e05d6b7c4c906fc7f523018fApprove131240042022-06-26 8:38:218 days 15 hrs ago0xc8728ae130381eb77fc9a8b715564b00e83e19df IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0000986493510.001
0x7c57d420d2149cc75c90824ba1e241b74710ca0f9dd01261bbd801209cfd3d2cApprove130646602022-06-25 19:05:309 days 5 hrs ago0xd3f85ade70adf48ed17c8cb182b8b1aff542e51f IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0001248207750.001
0xea696ad00ff8ca716f275c5def349ded4fe045b151a49120e4b6f02758334f1dApprove130316772022-06-25 11:53:129 days 12 hrs ago0xc8728ae130381eb77fc9a8b715564b00e83e19df IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0001336630860.001
0xa7cf8bd98a16f4ef3141f266dfd2b4f9ea0394d609c4cfdcf6635be487271a17Transfer130082552022-06-25 7:46:589 days 16 hrs ago0x6544df975cf58a0b2c9a361a8db2e00d338e10c1 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0000849920550.001
0xae85091f8254cf3ee8fa3b914d64da7989407b0cd3398ecbafeab329beaec5fdApprove129797732022-06-25 1:33:339 days 23 hrs ago0xd05d008a14297fdc004e241c4f4c673b61dabb5f IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0001258336460.001
0xdfc00d1b01db53133bff6f4a2e7994d514fa83e4389230f14c219d891ff7e70dApprove129628652022-06-24 21:21:3310 days 3 hrs ago0xdffd8bbf8dcaf236c4e009ff6013bfc98407b6c0 IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0001291004190.001
0xcb5556fdf84b2f32b2b3325626368ec94e405293d504dd89691a498cbd857626Approve129511212022-06-24 18:28:2110 days 6 hrs ago0xea9c6219d8e736e409fd707d7401a678f376ffcd IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0003206428190.001
0x6cc966ddea50c4f538381e22d0b1f70a69c61172b5943271baec0837c0a0fde7Approve129143582022-06-24 11:21:5510 days 13 hrs ago0xea9c6219d8e736e409fd707d7401a678f376ffcd IN  0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether0.0000871605870.001
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Latest 25 internal transaction
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0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x207addb05c548f262219f6bfc6e11c02d0f7fdbe 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x207addb05c548f262219f6bfc6e11c02d0f7fdbe 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x207addb05c548f262219f6bfc6e11c02d0f7fdbe 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0xa132dab612db5cb9fc9ac426a0cc215a3423f9c9 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x8a91e92fdd86e734781c38db52a390e1b99fba7c 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x8a91e92fdd86e734781c38db52a390e1b99fba7c 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x207addb05c548f262219f6bfc6e11c02d0f7fdbe 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x207addb05c548f262219f6bfc6e11c02d0f7fdbe 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x207addb05c548f262219f6bfc6e11c02d0f7fdbe 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0xa132dab612db5cb9fc9ac426a0cc215a3423f9c9 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0xf52093741e7f495a9b113bf105af915bbc7e5d47 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x8a91e92fdd86e734781c38db52a390e1b99fba7c 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x8a91e92fdd86e734781c38db52a390e1b99fba7c 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x207addb05c548f262219f6bfc6e11c02d0f7fdbe 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x207addb05c548f262219f6bfc6e11c02d0f7fdbe 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x207addb05c548f262219f6bfc6e11c02d0f7fdbe 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0xa132dab612db5cb9fc9ac426a0cc215a3423f9c9 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0xf52093741e7f495a9b113bf105af915bbc7e5d47 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x8a91e92fdd86e734781c38db52a390e1b99fba7c 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x8a91e92fdd86e734781c38db52a390e1b99fba7c 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x8a91e92fdd86e734781c38db52a390e1b99fba7c 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x8a91e92fdd86e734781c38db52a390e1b99fba7c 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x8a91e92fdd86e734781c38db52a390e1b99fba7c 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0xf52093741e7f495a9b113bf105af915bbc7e5d47 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
0x5ca73fe49650f00210c381cd5e9d1ad104b53d00637159286070f4c25acb5c4b138548282022-07-05 0:22:2013 mins ago 0x207addb05c548f262219f6bfc6e11c02d0f7fdbe 0xc40f949f8a4e094d1b49a23ea9241d289b7b28190 Ether
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Contract Source Code Verified (Genesis Bytecode Match Only)

Contract Name:
L2StandardERC20

Compiler Version
v0.7.6+commit.7338295f

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license
File 1 of 7 : L2StandardERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.5.16 <0.8.0;

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

import "./IL2StandardERC20.sol";

contract L2StandardERC20 is IL2StandardERC20, ERC20 {
    address public override l1Token;
    address public l2Bridge;

    /**
     * @param _l2Bridge Address of the L2 standard bridge.
     * @param _l1Token Address of the corresponding L1 token.
     * @param _name ERC20 name.
     * @param _symbol ERC20 symbol.
     */
    constructor(
        address _l2Bridge,
        address _l1Token,
        string memory _name,
        string memory _symbol
    )
        ERC20(_name, _symbol) {
        l1Token = _l1Token;
        l2Bridge = _l2Bridge;
    }

    modifier onlyL2Bridge {
        require(msg.sender == l2Bridge, "Only L2 Bridge can mint and burn");
        _;
    }

    function supportsInterface(bytes4 _interfaceId) public override pure returns (bool) {
        bytes4 firstSupportedInterface = bytes4(keccak256("supportsInterface(bytes4)")); // ERC165
        bytes4 secondSupportedInterface = IL2StandardERC20.l1Token.selector
            ^ IL2StandardERC20.mint.selector
            ^ IL2StandardERC20.burn.selector;
        return _interfaceId == firstSupportedInterface || _interfaceId == secondSupportedInterface;
    }

    function mint(address _to, uint256 _amount) public override onlyL2Bridge {
        _mint(_to, _amount);

        emit Mint(_to, _amount);
    }

    function burn(address _from, uint256 _amount) public override onlyL2Bridge {
        _burn(_from, _amount);

        emit Burn(_from, _amount);
    }
}

File 2 of 7 : ERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../../utils/Context.sol";
import "./IERC20.sol";
import "../../math/SafeMath.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 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

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

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

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

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

    /**
     * @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);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

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

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

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

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

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

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

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(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);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

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

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

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

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

File 3 of 7 : IL2StandardERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.5.16 <0.8.0;

import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { IERC165 } from "@openzeppelin/contracts/introspection/IERC165.sol";

interface IL2StandardERC20 is IERC20, IERC165 {
    function l1Token() external returns (address);

    function mint(address _to, uint256 _amount) external;

    function burn(address _from, uint256 _amount) external;

    event Mint(address indexed _account, uint256 _amount);
    event Burn(address indexed _account, uint256 _amount);
}

File 4 of 7 : 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 7 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 6 of 7 : 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 7 of 7 : 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);
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "none",
    "useLiteralContent": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_l2Bridge","type":"address"},{"internalType":"address","name":"_l1Token","type":"address"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"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":true,"internalType":"address","name":"_account","type":"address"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"Burn","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_account","type":"address"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"Mint","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"},{"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":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"burn","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":[{"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":[],"name":"l1Token","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"l2Bridge","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","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":"bytes4","name":"_interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","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"}]

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Deployed ByteCode Sourcemap

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Swarm Source

none
Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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