Contract 0xa2036f0538221a77a3937f1379699f44945018d0 14

Contract Overview

Polygon Hermez: MATIC Token
Balance:
0 ETH

ETH Value:
$0.00
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x562424ad1548fc1c66c4c10167489081388703a513cc16e92f28b8ba590fe87eApprove57456292023-09-26 2:26:4620 mins ago0xfbacd45addfce5e18dff8ad29155c8c63584be57 IN Polygon Hermez: MATIC Token0 ETH0.000016754446
0x8f1e1a5de03dcc98b4ed28f2e2d067ce5da69ed11afc4980c281d1162dec4f98Approve57455712023-09-26 2:22:0025 mins ago0x95006c99272299f4526a715a55002f22abfd9da8 IN Polygon Hermez: MATIC Token0 ETH0.000019466678
0xf1b153931d380c64ca8ef6bcd1bec5e72c133015fbb48bf0b2b0a9fad1c7c4cfApprove57455202023-09-26 2:18:1629 mins ago0x6a6af12835dddca19c886ccd3f9d16be81d23df4 IN Polygon Hermez: MATIC Token0 ETH0.000018934655
0xca35f6fa7ca3139f94e6ffb8aa0adad32e0a2d7d71160cd1985ad4e05e9135e8Approve57454472023-09-26 2:14:4432 mins ago0xa37cb21839b6494da9fa93281e1da5d381526666 IN Polygon Hermez: MATIC Token0 ETH0.000009253024
0xd211597d96e5359d0f18f3ce906cc8e5c95996b7656cacfbdfc17b3656cc559fApprove57450872023-09-26 1:52:3255 mins ago0xaf868e20978f4bd93ed07a6d10003cda1dab1111 IN Polygon Hermez: MATIC Token0 ETH0.0000089335
0xcfd2e6f89e153a5005d274b4e4cd30f6386fc6362322060778a912dbe000c960Approve57450122023-09-26 1:46:091 hr 1 min ago0x3f792a259244fe53fa66a2dee8a029473b199999 IN Polygon Hermez: MATIC Token0 ETH0.000009042728
0x460208424aec93ab9c78349039d6b9a5ee2060bf69cdd573343a6ce09c91e6d2Approve57449702023-09-26 1:43:261 hr 4 mins ago0xd13562a64426a7c4b12f1433c0a1da265776dab0 IN Polygon Hermez: MATIC Token0 ETH0.00001657361
0xcfb135f9d99317266a941369bfbc93f4800779a81fb8de373a62edb91b4f12cdTransfer57449552023-09-26 1:42:261 hr 5 mins ago0x68045420d31b895c3710c66221bf34afbe4160b5 IN Polygon Hermez: MATIC Token0 ETH0.000017236252
0x6db3a120f76a973a800530435dd0a15b9d37c104ca176f2a18967c1bf41b3c51Approve57449142023-09-26 1:39:311 hr 8 mins ago0xd13562a64426a7c4b12f1433c0a1da265776dab0 IN Polygon Hermez: MATIC Token0 ETH0.0000099263
0x2c9cb50da42f2d4d857b890c28631d2b270e8eae8490be6bd08584527f9af149Approve57448132023-09-26 1:33:311 hr 14 mins ago0xe594726d7ef775ab876ca5efbbc251e94f314a81 IN Polygon Hermez: MATIC Token0 ETH0.00001601807
0xc2d91bdba077eb4588e96566a84dce29c03e656645eee72bbc1860d8abba8088Approve57447972023-09-26 1:32:281 hr 15 mins ago0xee5ea3c7a5c61c4a41467d8d2ce64358d75dec17 IN Polygon Hermez: MATIC Token0 ETH0.000016342135
0x328702dfe0535dff516a4d92c227aa8bd7810e729cb2ec2a1ae262cc2bde9265Approve57447902023-09-26 1:31:351 hr 15 mins ago0xf7131ee40489757dee1b39bd5830f7bc8d3a7b87 IN Polygon Hermez: MATIC Token0 ETH0.00002529635
0xa0a1dc176faa5da0e1966bb4e32eef894ff36aeb3508c4c89cc0fd9ade82a46eApprove57447312023-09-26 1:28:241 hr 19 mins ago0x92f6f124bcd60c8c56e6ee5c78257328e20fffff IN Polygon Hermez: MATIC Token0 ETH0.000009883912
0xd66cb8007badecd7c8874f9f853312d81458c4a97e6ed788df46fe51ce8daa08Transfer From57446542023-09-26 1:23:441 hr 23 mins ago0x684d2b68a54a4028b51afcb16439689ba0123813 IN Polygon Hermez: MATIC Token0 ETH0.000025820904
0x0fd56c7f5457b6277725842e835f559ca5e581de312d29ef18d6d0a4844f5f8fApprove57445762023-09-26 1:19:191 hr 28 mins ago0xeef711dcc051b6804bd05b315a4d5ed656451512 IN Polygon Hermez: MATIC Token0 ETH0.000010330782
0x2f1f4cebb315d63cb8e802b6c6594ee17cabf4f91378f8c2d66c6ccfacbd254bApprove57445372023-09-26 1:16:351 hr 30 mins ago0x6cfa5d89089c86526a881cce27ae319653276666 IN Polygon Hermez: MATIC Token0 ETH0.000008832432
0x4149efec95a3785779e5154082a49ad8995d82833bb5790dc13e29f4ecaf8ce7Transfer57445222023-09-26 1:15:341 hr 32 mins ago0xc807aed73c06c27fb88c0a91f32bbdbf9091750d IN Polygon Hermez: MATIC Token0 ETH0.000017184801
0xa3e95ad2b722e6fd678c607ae70d6225bc8501c534178a1fb8498def45aa90aeApprove57444392023-09-26 1:10:181 hr 37 mins ago0x4e7ddcf377dda032796c571c6504050bacaaa555 IN Polygon Hermez: MATIC Token0 ETH0.000009699903
0x807c7e7c401166a1b64d8783006a4ae323bdcbbd496a55ad57a80aa4a00bdc34Approve57444322023-09-26 1:09:581 hr 37 mins ago0xbf55e017355bcba6eb0ba8a6cff79f4ca8b103af IN Polygon Hermez: MATIC Token0 ETH0.000019156194
0x99b19b92858b7b260459fb40f6e5196840e301bcb88a9526cd79f96c9dc09121Approve57444232023-09-26 1:09:481 hr 37 mins ago0x019b8ec14175c1d1dfc75694b2cc9352a3da1246 IN Polygon Hermez: MATIC Token0 ETH0.000017444167
0xeb0278b30784d3de257fb1ff8af8394822f58efe984d25572ccdc0909354df1eApprove57443982023-09-26 1:08:261 hr 39 mins ago0x547dac27e4f171e19d89ca76ff5ec430131c5e2a IN Polygon Hermez: MATIC Token0 ETH0.0000175921
0x6aae307f1c7484c473d85f2f0424724a0c96aeac0d078fca841946bd06539247Transfer From57443562023-09-26 1:04:481 hr 42 mins ago0x672f319a899030c66017a63c77a4487761882729 IN Polygon Hermez: MATIC Token0 ETH0.00004389147
0x07cb332fce229a50999c7ece8ca332fd38cddb627b4137088690105768e0df4cApprove57443262023-09-26 1:02:201 hr 45 mins ago0xda8cbd044c229f0de523ed632f2c51d088188a73 IN Polygon Hermez: MATIC Token0 ETH0.000018693484
0x8226dd3b29ac8f176e768bc0d50686558b09305ebebe3c9ab63b7847a4bde520Approve57441922023-09-26 0:47:332 hrs ago0x89a1584a7f73e18aac2038eaac3f0d5e021df28f IN Polygon Hermez: MATIC Token0 ETH0.000016056037
0xca7465a05a338d0d99fe9a8772fd5cee411bc531866ea0a4e13e66f99e78f78bApprove57441712023-09-26 0:45:282 hrs 2 mins ago0xea91c9999ba1a70cf109785027c0c399ffbad5e8 IN Polygon Hermez: MATIC Token0 ETH0.000017309842
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OVERVIEW

Matic Network brings massive scale to Ethereum using an adapted version of Plasma with PoS based side chains. Polygon is a well-structured, easy-to-use platform for Ethereum scaling and infrastructure development.

Latest 1 internal transaction
Parent Txn Hash Block From To Value
0x9bd25386e1b65a4a3b0b86d6bb9af40cee346087cb099fc3dc351485c4e926cc262023-03-24 22:17:31185 days 4 hrs ago Polygon Hermez: Bridge  Contract Creation0 ETH
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Similar Match Source Code
This contract matches the deployed ByteCode of the Source Code for Contract 0xa8ce8aee21bc2a48a5ef670afcc9274c7bbbc035
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
TokenWrapped

Compiler Version
v0.8.17+commit.8df45f5f

Optimization Enabled:
Yes with 999999 runs

Other Settings:
default evmVersion
File 1 of 5 : ERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol)

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.openzeppelin.com/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:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, 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}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, 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}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, 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) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, 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) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * 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:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, 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;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _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;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _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 Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - 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 2 of 5 : IERC20Metadata.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

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 3 of 5 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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);

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

File 4 of 5 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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 5 of 5 : TokenWrapped.sol
// SPDX-License-Identifier: GPL-3.0
// Implementation of permit based on https://github.com/WETH10/WETH10/blob/main/contracts/WETH10.sol
pragma solidity 0.8.17;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract TokenWrapped is ERC20 {
    // Domain typehash
    bytes32 public constant DOMAIN_TYPEHASH =
        keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
    // Permit typehash
    bytes32 public constant PERMIT_TYPEHASH =
        keccak256(
            "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
        );

    // Version
    string public constant VERSION = "1";

    // Chain id on deployment
    uint256 public immutable deploymentChainId;

    // Domain separator calculated on deployment
    bytes32 private immutable _DEPLOYMENT_DOMAIN_SEPARATOR;

    // PolygonZkEVM Bridge address
    address public immutable bridgeAddress;

    // Decimals
    uint8 private immutable _decimals;

    // Permit nonces
    mapping(address => uint256) public nonces;

    modifier onlyBridge() {
        require(
            msg.sender == bridgeAddress,
            "TokenWrapped::onlyBridge: Not PolygonZkEVMBridge"
        );
        _;
    }

    constructor(
        string memory name,
        string memory symbol,
        uint8 __decimals
    ) ERC20(name, symbol) {
        bridgeAddress = msg.sender;
        _decimals = __decimals;
        deploymentChainId = block.chainid;
        _DEPLOYMENT_DOMAIN_SEPARATOR = _calculateDomainSeparator(block.chainid);
    }

    function mint(address to, uint256 value) external onlyBridge {
        _mint(to, value);
    }

    // Notice that is not require to approve wrapped tokens to use the bridge
    function burn(address account, uint256 value) external onlyBridge {
        _burn(account, value);
    }

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

    // Permit relative functions
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external {
        require(
            block.timestamp <= deadline,
            "TokenWrapped::permit: Expired permit"
        );

        bytes32 hashStruct = keccak256(
            abi.encode(
                PERMIT_TYPEHASH,
                owner,
                spender,
                value,
                nonces[owner]++,
                deadline
            )
        );

        bytes32 digest = keccak256(
            abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR(), hashStruct)
        );

        address signer = ecrecover(digest, v, r, s);
        require(
            signer != address(0) && signer == owner,
            "TokenWrapped::permit: Invalid signature"
        );

        _approve(owner, spender, value);
    }

    /**
     * @notice Calculate domain separator, given a chainID.
     * @param chainId Current chainID
     */
    function _calculateDomainSeparator(
        uint256 chainId
    ) private view returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    DOMAIN_TYPEHASH,
                    keccak256(bytes(name())),
                    keccak256(bytes(VERSION)),
                    chainId,
                    address(this)
                )
            );
    }

    /// @dev Return the DOMAIN_SEPARATOR.
    function DOMAIN_SEPARATOR() public view returns (bytes32) {
        return
            block.chainid == deploymentChainId
                ? _DEPLOYMENT_DOMAIN_SEPARATOR
                : _calculateDomainSeparator(block.chainid);
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract ABI

[{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"uint8","name":"__decimals","type":"uint8"}],"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":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DOMAIN_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PERMIT_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"VERSION","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"bridgeAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"value","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":[],"name":"deploymentChainId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"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":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

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