Contract 0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000 9

 

Contract Overview

Balance:
0 Ether

EtherValue:
$0.00

Token:
Txn Hash Method
Index
From
To
Value
0x016aabfcd9af45bd3beb13ea437b37cae18f38eb51dc23c25489466451eae7bcApprove197236692022-08-19 6:54:4316 hrs 50 mins ago0x08940dc9b5a19fab9319b77c61dda7b8067e6843 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0002279373870.‍001043428
0x826e10cc6ddb4b196245c1c890682a6d35eb92ba405ec03b4e82121bb1c08da8Approve197236532022-08-19 6:54:4316 hrs 50 mins ago0x08940dc9b5a19fab9319b77c61dda7b8067e6843 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0002279373870.‍001043428
0x0e9e5f8253bd166a47f8fc2310a3906dae38c080df54895a5b3e3303e49f2dd5Approve196053152022-08-18 9:07:521 day 14 hrs ago0x08940dc9b5a19fab9319b77c61dda7b8067e6843 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0000281689220.‍001
0x10a079f88879b29ac0fa78bb9ec362ac4f8c78a7f7ca187e5565d692f2c6b0e3Approve196053112022-08-18 9:07:371 day 14 hrs ago0x08940dc9b5a19fab9319b77c61dda7b8067e6843 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0000281689220.‍001
0x555b4e23a21cded58d9369f8d0264727d85afc399c29007c45b7ce00c9fcf40bApprove196042622022-08-18 8:51:171 day 14 hrs ago0x08940dc9b5a19fab9319b77c61dda7b8067e6843 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0000345547410.‍001
0xb6ac5d70bac7643347233c40bcb30eaf28a7e3193409d1e0c1782f560d7a38a9Approve196042542022-08-18 8:51:021 day 14 hrs ago0x08940dc9b5a19fab9319b77c61dda7b8067e6843 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0000345547410.‍001
0x5773fbc32bd8b49287355a428ba700869a2ceee41885ea1d49d67c41dc703e48Approve196039142022-08-18 8:47:091 day 14 hrs ago0x08940dc9b5a19fab9319b77c61dda7b8067e6843 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0000362177710.‍001
0x6aefe82c371f8a73c6998ebafaecc656becfc805ef09d827a6bef2ddaf336d53Approve196039102022-08-18 8:47:091 day 14 hrs ago0x08940dc9b5a19fab9319b77c61dda7b8067e6843 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0000362177710.‍001
0x0527c059e9871b41347471fe04a1b57099e7eb248898375cc750aca96c0b77c3Approve196019572022-08-18 8:20:351 day 15 hrs ago0x08940dc9b5a19fab9319b77c61dda7b8067e6843 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0000319927380.‍001
0x4572827a0d668a0c8cb0c534e1368a4e56ad5150c3042ad50b52ada80e500b01Approve196019522022-08-18 8:20:351 day 15 hrs ago0x08940dc9b5a19fab9319b77c61dda7b8067e6843 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0000319927380.‍001
0x212477e4997af7ceccae5a8d4b5afb5e70f34b0721129c1b3794e24b655ce27aApprove195999202022-08-18 7:44:461 day 16 hrs ago0xd49f9f30f6149859a14ba1d3484efb86b140dfc5 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0000322938130.‍001
0xe5d76ef73d03bcc25ae0f92be807da97db9c0633dca53cc83bbe96932166ebffTransfer187658002022-08-11 16:13:528 days 7 hrs ago0x06b3ee4eb3f61d03f918e2942979e8333d5b52e9 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0001586952550.‍001
0xc7fd256aafd960723c383a8ecb0897d689a2a005644bd6bf197179ca4ec46026Transfer173072262022-08-02 17:44:4217 days 6 hrs ago0xa3a58e8da777bbd45cd8f31864dc3279bb124a27 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0001237896010.‍001
0xcd058a64790e1cd96a62c447a317b5176147e0ff33d57c996259abb884d98492Transfer106780172022-06-05 21:39:0075 days 2 hrs ago0x562f78b2a0ca4fa73e3bfa2c4c1d3891c38615df IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0002903547770.‍001
0x4310b450ff4924531ec94c3c9ffa538ffd1cfe81dcb64453ac00358fed180c81Transfer97417182022-06-01 3:08:5279 days 20 hrs ago0x562f78b2a0ca4fa73e3bfa2c4c1d3891c38615df IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0003150390240.‍001
0xeb849db475eff1608a1889b5a176450e7435d1b147bc3d380ac4fbb774ce95f7Transfer97347182022-06-01 2:57:3779 days 20 hrs ago0x562f78b2a0ca4fa73e3bfa2c4c1d3891c38615df IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0001915148710.‍001
0x6e753b0e02780384cf158094381b5642d22bc61a73870db836805002d21c7462Increase Allowan...71535082022-05-05 19:14:38106 days 4 hrs ago0x7919a9c5961d895cda921f6e0396e40a3d6f7e51 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍000383001240.‍001
0x4b9edb5169062704d08a2d6968671d1c108bc3949ec01cf08f1172f8d73d669dMint71533292022-05-05 19:12:51106 days 4 hrs ago0x7919a9c5961d895cda921f6e0396e40a3d6f7e51 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0003826634630.‍001
0xd5c47fdfce3080d99b403ab0ad84855a629e349c723a0d81ecd58b8328d0b78cMint71532692022-05-05 19:12:21106 days 4 hrs ago0x7919a9c5961d895cda921f6e0396e40a3d6f7e51 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0003322407170.‍001
0x9973bb9b97e2c8079cf946e2057e6ec5a506fac147e34c99f282504a8790edc5Transfer57169432022-04-12 12:50:41129 days 10 hrs ago0x31a1186d1ba616357e1cb44cb1634dbd43ac81fb IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0002306483330.‍001
0x5b4081db52a6c3b2eb197e44359df40f95418943fab462318c340703039c2470Transfer56584142022-04-11 11:29:07130 days 12 hrs ago0xe0e8a41c068dc7596a41e99f41eb4d2886cd0147 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0001062586150.‍001
0xccd50b0fac4a0e51efee798e023acfbd8dbc91de224028dfcb843828f3b8ad11Transfer56583832022-04-11 11:28:36130 days 12 hrs ago0xe0e8a41c068dc7596a41e99f41eb4d2886cd0147 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0001062586150.‍001
0x6cfad0533eb2420fbcc40fe50cd8be4df272a33c0c069c028be9e190b31beb9cTransfer56583472022-04-11 11:28:05130 days 12 hrs ago0xe0e8a41c068dc7596a41e99f41eb4d2886cd0147 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0001062586150.‍001
0xb499b07095514bdb4d56f6a602830b41b76693f60c89bd0e3045865bad28b983Transfer33380192022-02-08 13:35:29192 days 10 hrs ago0x4045724f1eace60578ae9318ea9610bfb4b9b20f IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0002340884660.‍001
0x3b30b5efa6eed75c8c05dd58844d8b329638483cc59b54fab103689a081c6d8eTransfer24101122022-01-18 20:03:35213 days 3 hrs ago0xda69c2115c9cd5a2a0ac661ad6dd3bbb24f7ddf1 IN 0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether0.‍0006853202250.‍001
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xdc66a450fffc253c2a2c5698c7ae7bc3517399eac18ff31b0d7a2381ace65781198261512022-08-19 22:05:551 hr 39 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0xdc66a450fffc253c2a2c5698c7ae7bc3517399eac18ff31b0d7a2381ace65781198261512022-08-19 22:05:551 hr 39 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0xdc66a450fffc253c2a2c5698c7ae7bc3517399eac18ff31b0d7a2381ace65781198261512022-08-19 22:05:551 hr 39 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0xdc66a450fffc253c2a2c5698c7ae7bc3517399eac18ff31b0d7a2381ace65781198261512022-08-19 22:05:551 hr 39 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0xdc66a450fffc253c2a2c5698c7ae7bc3517399eac18ff31b0d7a2381ace65781198261512022-08-19 22:05:551 hr 39 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x3f1e454a09e51ac1a0860868ca50f8eddd046c09f2c92eb9d15cf39fe8584bdd198212522022-08-19 21:43:132 hrs 1 min ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x3f1e454a09e51ac1a0860868ca50f8eddd046c09f2c92eb9d15cf39fe8584bdd198212522022-08-19 21:43:132 hrs 1 min ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x3f1e454a09e51ac1a0860868ca50f8eddd046c09f2c92eb9d15cf39fe8584bdd198212522022-08-19 21:43:132 hrs 1 min ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x3f1e454a09e51ac1a0860868ca50f8eddd046c09f2c92eb9d15cf39fe8584bdd198212522022-08-19 21:43:132 hrs 1 min ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x3f1e454a09e51ac1a0860868ca50f8eddd046c09f2c92eb9d15cf39fe8584bdd198212522022-08-19 21:43:132 hrs 1 min ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x55b0b877f9385ff359926a7f5a8d5189bdcea1220e4ced3bb249c9d39adaeaf4198208372022-08-19 21:33:212 hrs 11 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x55b0b877f9385ff359926a7f5a8d5189bdcea1220e4ced3bb249c9d39adaeaf4198208372022-08-19 21:33:212 hrs 11 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x7606be4fb5484bd3cdfe94ca4794268c2c8e6bdabfd57b7ed3012751f8a91e8b198202582022-08-19 21:22:172 hrs 22 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x7606be4fb5484bd3cdfe94ca4794268c2c8e6bdabfd57b7ed3012751f8a91e8b198202582022-08-19 21:22:172 hrs 22 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x51aa3301ec680139f98dee8d635f1c972caa6387389f365456e51625ffd5ab80198200632022-08-19 21:19:242 hrs 25 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x51aa3301ec680139f98dee8d635f1c972caa6387389f365456e51625ffd5ab80198200632022-08-19 21:19:242 hrs 25 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x51aa3301ec680139f98dee8d635f1c972caa6387389f365456e51625ffd5ab80198200632022-08-19 21:19:242 hrs 25 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x51aa3301ec680139f98dee8d635f1c972caa6387389f365456e51625ffd5ab80198200632022-08-19 21:19:242 hrs 25 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x51aa3301ec680139f98dee8d635f1c972caa6387389f365456e51625ffd5ab80198200632022-08-19 21:19:242 hrs 25 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x231a2bf3a2f8e52ee3d92a31015fae5ba0caddd6b14659e454a66dc3cb33a1d0198197202022-08-19 21:13:392 hrs 31 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x231a2bf3a2f8e52ee3d92a31015fae5ba0caddd6b14659e454a66dc3cb33a1d0198197202022-08-19 21:13:392 hrs 31 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x231a2bf3a2f8e52ee3d92a31015fae5ba0caddd6b14659e454a66dc3cb33a1d0198197202022-08-19 21:13:392 hrs 31 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x231a2bf3a2f8e52ee3d92a31015fae5ba0caddd6b14659e454a66dc3cb33a1d0198197202022-08-19 21:13:392 hrs 31 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x231a2bf3a2f8e52ee3d92a31015fae5ba0caddd6b14659e454a66dc3cb33a1d0198197202022-08-19 21:13:392 hrs 31 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
0x0de970b39a123d09807b391ee64a7c8f3719334f9179186f421072055d04289f198193212022-08-19 21:09:392 hrs 35 mins ago Optimism Bridge0xdeaddeaddeaddeaddeaddeaddeaddeaddead00000 Ether
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Contract Source Code Verified (Genesis Bytecode Match Only)

Contract Name:
OVM_ETH

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 10000 runs

Other Settings:
default evmVersion
File 1 of 9 : OVM_ETH.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

/* Library Imports */
import { Lib_PredeployAddresses } from "../../libraries/constants/Lib_PredeployAddresses.sol";

/* Contract Imports */
import { L2StandardERC20 } from "../../standards/L2StandardERC20.sol";

/**
 * @title OVM_ETH
 * @dev The ETH predeploy provides an ERC20 interface for ETH deposited to Layer 2. Note that
 * unlike on Layer 1, Layer 2 accounts do not have a balance field.
 */
contract OVM_ETH is L2StandardERC20 {
    /***************
     * Constructor *
     ***************/

    constructor()
        L2StandardERC20(Lib_PredeployAddresses.L2_STANDARD_BRIDGE, address(0), "Ether", "ETH")
    {}

    // ETH ERC20 features are disabled until further notice.
    // Discussion here: https://github.com/ethereum-optimism/optimism/discussions/1444

    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        revert("OVM_ETH: transfer is disabled pending further community discussion.");
    }

    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        revert("OVM_ETH: approve is disabled pending further community discussion.");
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        revert("OVM_ETH: transferFrom is disabled pending further community discussion.");
    }

    function increaseAllowance(address spender, uint256 addedValue)
        public
        virtual
        override
        returns (bool)
    {
        revert("OVM_ETH: increaseAllowance is disabled pending further community discussion.");
    }

    function decreaseAllowance(address spender, uint256 subtractedValue)
        public
        virtual
        override
        returns (bool)
    {
        revert("OVM_ETH: decreaseAllowance is disabled pending further community discussion.");
    }
}

File 2 of 9 : Lib_PredeployAddresses.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

/**
 * @title Lib_PredeployAddresses
 */
library Lib_PredeployAddresses {
    address internal constant L2_TO_L1_MESSAGE_PASSER = 0x4200000000000000000000000000000000000000;
    address internal constant L1_MESSAGE_SENDER = 0x4200000000000000000000000000000000000001;
    address internal constant DEPLOYER_WHITELIST = 0x4200000000000000000000000000000000000002;
    address payable internal constant OVM_ETH = payable(0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000);
    address internal constant L2_CROSS_DOMAIN_MESSENGER =
        0x4200000000000000000000000000000000000007;
    address internal constant LIB_ADDRESS_MANAGER = 0x4200000000000000000000000000000000000008;
    address internal constant PROXY_EOA = 0x4200000000000000000000000000000000000009;
    address internal constant L2_STANDARD_BRIDGE = 0x4200000000000000000000000000000000000010;
    address internal constant SEQUENCER_FEE_WALLET = 0x4200000000000000000000000000000000000011;
    address internal constant L2_STANDARD_TOKEN_FACTORY =
        0x4200000000000000000000000000000000000012;
    address internal constant L1_BLOCK_NUMBER = 0x4200000000000000000000000000000000000013;
}

File 3 of 9 : L2StandardERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "./IL2StandardERC20.sol";

contract L2StandardERC20 is IL2StandardERC20, ERC20 {
    address public 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 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 virtual onlyL2Bridge {
        _mint(_to, _amount);

        emit Mint(_to, _amount);
    }

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

        emit Burn(_from, _amount);
    }
}

File 4 of 9 : 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 Contracts guidelines: functions revert
 * instead 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 default 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");
        unchecked {
            _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");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This 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");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(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:
     *
     * - `account` 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);

        _afterTokenTransfer(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");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

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

        _afterTokenTransfer(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 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 {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been 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 _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

File 5 of 9 : IL2StandardERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { IERC165 } from "@openzeppelin/contracts/utils/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 6 of 9 : 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 7 of 9 : 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 8 of 9 : 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) {
        return msg.data;
    }
}

File 9 of 9 : 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);
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

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Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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