Token BNB

 

Overview [ERC-20]

Price
$327.59 @ 0.197816 Eth (+2.88%)
Fully Diluted Market Cap
Max Total Supply:
0 BNB

Holders:
0

Transfers:
-

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Market

Volume (24H):$901,292,812.23
Market Capitalization:$51,726,080,940.47
Circulating Supply:157,901,135.00 BNB
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume
1
Binance
BNB-BUSD$326.0200
0.1950307 Eth
$192,152,505.0000
589,394.776 BNB
0.9952%
2
Binance
BNB-USDT$328.1600
0.1963112 Eth
$191,522,397.0000
583,630.109 BNB
0.9855%
3
Azbit
BNB-USDT$327.1500
0.1970348 Eth
$63,386,275.0000
193,753.428 BNB
0.3272%
4
BKEX
BNB-USDT$326.7300
0.1967194 Eth
$29,894,381.0000
91,352.273 BNB
0.1543%
5
Binance
BNB-BTC$328.4800
0.1969831 Eth
$23,426,622.0000
71,317.904 BNB
0.1204%
6
P2B
BNB-USDT$327.6100
0.1972436 Eth
$22,361,234.0000
68,256.203 BNB
0.1153%
7
Coinsbit
BNB-USDT$326.7300
0.1966908 Eth
$22,158,726.0000
67,818.713 BNB
0.1145%
8
Coinsbit
BNB-USD$326.9100
0.1967960 Eth
$18,695,889.0000
57,189.806 BNB
0.0966%
9
Tidex
BNB-USDT$326.5000
0.1965510 Eth
$14,858,337.0000
45,507.578 BNB
0.0768%
10
BingX
BNB-USDT$326.7500
0.1967937 Eth
$13,089,075.0000
40,032.015 BNB
0.0676%
11
Binance
BNB-ETH$328.2700
0.1963692 Eth
$12,197,776.0000
37,157.325 BNB
0.0627%
12
BitMart
BNB-USDT$327.5000
0.1971833 Eth
$10,790,181.0000
32,947.200 BNB
0.0556%
13
KuCoin
BNB-USDT$326.5200
0.1965594 Eth
$9,928,003.0000
30,405.826 BNB
0.0513%
14
Bitrue
BNB-USDT$327.0900
0.1969303 Eth
$8,994,792.0000
27,499.690 BNB
0.0464%
15
Dcoin
BNB-USDT$326.5500
0.1965811 Eth
$8,918,475.0000
27,311.000 BNB
0.0461%
16
OKX
BNB-USDT$326.5400
0.1965751 Eth
$8,679,134.0000
26,484.015 BNB
0.0447%
17
MEXC Global
BNB-USDT$326.6000
0.1966119 Eth
$8,034,303.0000
24,599.549 BNB
0.0415%
18
DigiFinex
BNB-USDT$326.8500
0.1968539 Eth
$7,730,252.0000
23,650.846 BNB
0.0399%
19
Coinsbit
BNB-BTC$326.3000
0.1964292 Eth
$6,288,830.0000
19,273.148 BNB
0.0325%
20
Bitforex
BNB-BTC$326.7600
0.1967065 Eth
$5,996,368.0000
18,350.938 BNB
0.0310%
21
LocalTrade
BNB-USDT$326.8000
0.1967616 Eth
$5,691,792.0000
17,416.810 BNB
0.0294%
22
Fameex
BNB-USDT$326.7500
0.1967937 Eth
$5,459,605.0000
16,687.243 BNB
0.0282%
23
Bibox
BNB-USDT$327.2700
0.1970448 Eth
$5,037,980.0000
15,394.000 BNB
0.0260%
24
Bitget
BNB-USDT$326.6800
0.1966593 Eth
$4,394,284.0000
13,388.496 BNB
0.0226%
25
P2B
BNB-USD$327.0000
0.1968828 Eth
$4,338,221.0000
13,266.732 BNB
0.0224%
26
Binance
BNB-EUR$327.7800
0.1965117 Eth
$3,945,961.0000
12,038.505 BNB
0.0203%
27
Bitrue
BNB-BUSD$325.8800
0.1961776 Eth
$3,705,132.0000
11,369.545 BNB
0.0192%
28
Tidex
BNB-BTC$326.6000
0.1966124 Eth
$3,275,379.0000
10,028.581 BNB
0.0169%
29
Tidex
BNB-USDC$326.6800
0.1966876 Eth
$3,269,340.0000
10,007.905 BNB
0.0169%
30
Binance US
BNB-USD$326.8000
0.1967569 Eth
$3,129,723.0000
9,576.901 BNB
0.0162%
31
Coinsbit
BNB-BUSD$326.3300
0.1964467 Eth
$2,798,721.0000
8,576.371 BNB
0.0145%
32
Tidex
BNB-ETH$326.4800
0.1965351 Eth
$2,574,278.0000
7,885.045 BNB
0.0133%
33
LBank
BNB-USDT$326.3300
0.1964480 Eth
$2,558,109.0000
7,838.990 BNB
0.0132%
34
Pionex
BNB-USDT$326.9500
0.1968502 Eth
$2,454,041.0000
7,501.716 BNB
0.0127%
35
Poloniex
BNB-USDT$326.5600
0.1965871 Eth
$2,377,715.0000
7,281.040 BNB
0.0123%
36
Gate.io
BNB-USDT$326.7200
0.1967074 Eth
$2,344,760.0000
7,192.694 BNB
0.0121%
37
Coinsbit
BNB-ETH$326.9900
0.1968471 Eth
$2,266,289.0000
6,930.667 BNB
0.0117%
38
BTCEX
BNB-USDT$327.4500
0.1972156 Eth
$2,059,726.0000
6,290.332 BNB
0.0106%
39
OKX
BNB-USDC$326.6600
0.1966463 Eth
$1,953,098.0000
5,972.432 BNB
0.0101%
40
Phemex
BNB-USDT$327.0500
0.1969122 Eth
$1,912,626.0000
5,848.134 BNB
0.0099%
41
Binance
FTM-BNB$328.2100
0.1963409 Eth
$1,760,676.0000
2,839,429.646 FTM
4.7946%
42
Binance
MATIC-BNB$328.3300
0.1968024 Eth
$1,731,019.0000
1,423,771.798 MATIC
2.4042%
43
Binance
AVAX-BNB$328.5000
0.1969466 Eth
$1,577,808.0000
72,334.573 AVAX
0.1221%
44
XT.COM
BNB-USDT$326.9100
0.1968219 Eth
$1,532,282.0000
4,682.009 BNB
0.0079%
45
Bybit
BNB-USDT$326.6600
0.1965089 Eth
$1,526,999.0000
4,674.587 BNB
0.0079%
46
Dex-Trade
BNB-USDT$327.0100
0.1968821 Eth
$1,455,110.0000
4,449.782 BNB
0.0075%
47
AscendEX (BitMax)
BNB-USDT$326.8100
0.1967616 Eth
$1,396,908.0000
4,274.416 BNB
0.0072%
48
Binance
DOT-BNB$328.2200
0.1964647 Eth
$1,391,364.0000
209,031.708 DOT
0.3530%
49
MEXC Global
BNB-BUSD$326.5200
0.1966546 Eth
$1,261,229.0000
3,862.663 BNB
0.0065%
50
LBank
BNB-ETH$326.5200
0.1965609 Eth
$1,176,939.0000
3,604.503 BNB
0.0061%
51
Binance
CHZ-BNB$328.6600
0.1965710 Eth
$1,092,852.0000
7,600,505.067 CHZ
12.8341%
52
Bitrue
BNB-USDC$326.3700
0.1965009 Eth
$1,087,589.0000
3,332.340 BNB
0.0056%
53
Dex-Trade
BNB-BUSD$326.3900
0.1965082 Eth
$1,085,634.0000
3,326.229 BNB
0.0056%
54
P2B
BNB-ETH$327.8400
0.1973861 Eth
$1,059,599.0000
3,232.100 BNB
0.0055%
55
Binance
TRX-BNB$328.2200
0.1963399 Eth
$1,026,852.0000
15,961,743.587 TRX
26.9527%
56
P2B
BNB-BTC$327.4000
0.1971236 Eth
$1,019,420.0000
3,113.684 BNB
0.0053%
57
BitMart
BNB-BTC$326.9000
0.1968242 Eth
$992,339.0000
3,035.580 BNB
0.0051%
58
Binance
SOL-BNB$326.9900
0.1968447 Eth
$939,534.0000
37,956.107 SOL
0.0641%
59
Huobi
BNB-USDT$326.4800
0.1964021 Eth
$905,051.0000
2,766.805 BNB
0.0047%
60
Binance
LTC-BNB$328.2100
0.1963409 Eth
$832,485.0000
8,385.010 LTC
0.0142%
61
BitBNS
BNB-USDT$325.6100
0.1960152 Eth
$815,689.0000
2,505.093 BNB
0.0042%
62
Binance
GALA-BNB$328.2700
0.1967974 Eth
$748,362.0000
13,536,655.533 GALA
22.8578%
63
Dex-Trade
BNB-BTC$326.9100
0.1968242 Eth
$743,474.0000
2,274.240 BNB
0.0038%
64
Txbit
BNB-BTC$327.0700
0.1969239 Eth
$711,536.0000
2,175.498 BNB
0.0037%
65
Deepcoin
BNB-USDT$326.8500
0.1968540 Eth
$704,459.0000
2,163.459 BNB
0.0037%
66
Binance
XRP-BNB$328.5000
0.1969560 Eth
$674,834.0000
1,634,261.053 XRP
2.7596%
67
Binance US
BNB-USDT$326.9700
0.1968599 Eth
$672,828.0000
2,057.767 BNB
0.0035%
68
Binance
BNB-BRL$328.6300
0.1969891 Eth
$660,253.0000
2,009.117 BNB
0.0034%
69
CoinEx
BNB-USDT$326.8500
0.1967857 Eth
$648,553.0000
1,986.108 BNB
0.0034%
70
Bitkub
BNB-THB$325.6200
0.1960192 Eth
$638,359.0000
1,960.447 BNB
0.0033%
71
Binance
CAKE-BNB$326.9900
0.1968447 Eth
$635,400.0000
150,867.808 CAKE
0.2548%
72
AscendEX (BitMax)
BNB-BTC$326.9800
0.1968684 Eth
$634,598.0000
1,940.760 BNB
0.0033%
73
Bitrue
BNB-BTC$326.8200
0.1967672 Eth
$550,551.0000
1,684.590 BNB
0.0028%
74
Binance
BNB-AUD$327.3300
0.1959362 Eth
$534,500.0000
1,632.889 BNB
0.0028%
75
Binance
BNB-GBP$326.1700
0.1954602 Eth
$489,565.0000
1,500.941 BNB
0.0025%
76
Cryptology
BNB-USDC$326.5800
0.1965981 Eth
$483,993.0000
1,482.002 BNB
0.0025%
77
Binance
BNB-BIDR$327.6900
0.1964590 Eth
$476,599.0000
1,454.419 BNB
0.0025%
78
Binance
ADA-BNB$328.2200
0.1963399 Eth
$453,014.0000
1,128,530.637 ADA
1.9056%
79
Cryptology
BNB-USDT$326.7200
0.1966792 Eth
$355,500.0000
1,088.103 BNB
0.0018%
80
Cryptology
BNB-BTC$327.0400
0.1968746 Eth
$317,485.0000
970.782 BNB
0.0016%
81
KuCoin
BNB-BTC$326.7200
0.1966837 Eth
$314,330.0000
962.068 BNB
0.0016%
82
Binance
VET-BNB$328.2200
0.1964647 Eth
$298,922.0000
12,257,672.763 VET
20.6981%
83
MEXC Global
BNB-USDC$327.4200
0.1971972 Eth
$296,543.0000
905.700 BNB
0.0015%
84
Binance
BNB-DAI$326.7300
0.1966907 Eth
$295,389.0000
904.064 BNB
0.0015%
85
Indodax
BNB-IDR$328.1000
0.1975429 Eth
$284,618.0000
867.483 BNB
0.0015%
86
Hotbit
BNB-USDT$327.3200
0.1970680 Eth
$270,375.0000
826.039 BNB
0.0014%
87
Pionex
BNB-BTC$326.9000
0.1968171 Eth
$263,619.0000
811.410 BNB
0.0014%
88
TokoCrypto
BNB-BIDR$326.6800
0.1957672 Eth
$255,133.0000
780.989 BNB
0.0013%
89
Bitvavo
BNB-EUR$326.6800
0.1965240 Eth
$235,042.0000
719.475 BNB
0.0012%
90
Bitget
BNB-USDC$326.9600
0.1968269 Eth
$216,621.0000
662.875 BNB
0.0011%
91
Binance US
BNB-BTC$326.8800
0.1968057 Eth
$196,777.0000
601.987 BNB
0.0010%
92
Binance
PAXG-BNB$328.2200
0.1964647 Eth
$155,914.0000
81.747 PAXG
0.0001%
93
Binance US
BNB-BUSD$326.2400
0.1964210 Eth
$111,083.0000
340.493 BNB
0.0006%
94
Bitazza
BNB-USDT$328.0500
0.1975772 Eth
$110,622.0000
338.346 BNB
0.0006%
95
Ace
BNB-USDT$327.6500
0.1973361 Eth
$97,981.0000
299.548 BNB
0.0005%
96
Binance
XMR-BNB$328.2100
0.1963409 Eth
$96,388.0000
547.914 XMR
0.0009%
97
XT.COM
BNB-XT$326.9100
0.1968250 Eth
$90,325.0000
274.041 BNB
0.0005%
98
Dex-Trade
BNB-ETH$327.0100
0.1968856 Eth
$85,957.0000
262.855 BNB
0.0004%
99
Emirex
BNB-USDT$326.5000
0.1965510 Eth
$43,318.0000
132.672 BNB
0.0002%
100
LATOKEN
BNB-USDT$327.2100
0.1970709 Eth
$42,314.0000
129.316 BNB
0.0002%

Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x023F34ce25758d4BC8FaC68e7472545D6b86d4Ea

Contract Name:
L2StandardERC20

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 10000 runs

Other Settings:
default evmVersion
File 1 of 7 : 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;
    uint8 private immutable _decimals;

    /**
     * @param _l2Bridge Address of the L2 standard bridge.
     * @param _l1Token Address of the corresponding L1 token.
     * @param _name ERC20 name.
     * @param _symbol ERC20 symbol.
     * @param decimals_ ERC20 decimals.
     */
    constructor(
        address _l2Bridge,
        address _l1Token,
        string memory _name,
        string memory _symbol,
        uint8 decimals_
    ) ERC20(_name, _symbol) {
        l1Token = _l1Token;
        l2Bridge = _l2Bridge;
        _decimals = decimals_;
    }

    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);
    }

    function decimals() public view virtual override returns (uint8) {
        return _decimals;
    }
}

File 2 of 7 : 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 3 of 7 : 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 4 of 7 : 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 5 of 7 : 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 6 of 7 : 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 7 of 7 : 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
  },
  "metadata": {
    "bytecodeHash": "none",
    "useLiteralContent": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

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