Token Any Inu

MEME 
 

Overview [ERC-20]

Price
$0.00 @ 0.000000 Eth (-3.49%)
Fully Diluted Market Cap
Max Total Supply:
1,982,457,211,311.40688170993472214 AI

Holders:
2,528

Transfers:
-

Contract:
0x2598c30330d5771ae9f983979209486ae26de8750x2598c30330D5771AE9F983979209486aE26dE875

Decimals:
18

Official Site:

Social Profiles:

 
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OVERVIEW

Multichain dog coin powered by Axelar's Interchain Token Service.

Market

Volume (24H):$651,426.00
Market Capitalization:$8,433,351.00
Circulating Supply:420,690,000,000.00 AI
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume

Minimal Proxy Contract for 0x7f9f70da4af54671a6abac58e705b5634cac8819

Contract Name:
InterchainToken

Compiler Version
v0.8.21+commit.d9974bed

Optimization Enabled:
Yes with 1000 runs

Other Settings:
london EvmVersion
Decompile ByteCode

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 17 : IERC20Permit.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.9;

interface IERC20Permit {
    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function nonces(address account) external view returns (uint256);

    function permit(
        address issuer,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
}

File 2 of 17 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

    /**
     * @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 3 of 17 : IRolesBase.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title IRolesBase Interface
 * @notice IRolesBase is an interface that abstracts the implementation of a
 * contract with role control internal functions.
 */
interface IRolesBase {
    error MissingRole(address account, uint8 role);
    error MissingAllRoles(address account, uint256 accountRoles);
    error MissingAnyOfRoles(address account, uint256 accountRoles);

    error InvalidProposedRoles(address fromAccount, address toAccount, uint256 accountRoles);

    event RolesProposed(address indexed fromAccount, address indexed toAccount, uint256 accountRoles);
    event RolesAdded(address indexed account, uint256 accountRoles);
    event RolesRemoved(address indexed account, uint256 accountRoles);

    /**
     * @notice Checks if an account has a role.
     * @param account The address to check
     * @param role The role to check
     * @return True if the account has the role, false otherwise
     */
    function hasRole(address account, uint8 role) external view returns (bool);
}

File 4 of 17 : AddressBytes.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title AddressBytesUtils
 * @dev This library provides utility functions to convert between `address` and `bytes`.
 */
library AddressBytes {
    error InvalidBytesLength(bytes bytesAddress);

    /**
     * @dev Converts a bytes address to an address type.
     * @param bytesAddress The bytes representation of an address
     * @return addr The converted address
     */
    function toAddress(bytes memory bytesAddress) internal pure returns (address addr) {
        if (bytesAddress.length != 20) revert InvalidBytesLength(bytesAddress);

        assembly {
            addr := mload(add(bytesAddress, 20))
        }
    }

    /**
     * @dev Converts an address to bytes.
     * @param addr The address to be converted
     * @return bytesAddress The bytes representation of the address
     */
    function toBytes(address addr) internal pure returns (bytes memory bytesAddress) {
        bytesAddress = new bytes(20);
        // we can test if using a single 32 byte variable that is the address with the length together and using one mstore would be slightly cheaper.
        assembly {
            mstore(add(bytesAddress, 20), addr)
            mstore(bytesAddress, 20)
        }
    }
}

File 5 of 17 : RolesBase.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IRolesBase } from '../interfaces/IRolesBase.sol';

/**
 * @title RolesBase
 * @notice A contract module which provides a set if internal functions
 * for implementing role control features.
 */
contract RolesBase is IRolesBase {
    bytes32 internal constant ROLES_PREFIX = keccak256('roles');
    bytes32 internal constant PROPOSE_ROLES_PREFIX = keccak256('propose-roles');

    /**
     * @notice Modifier that throws an error if called by any account missing the role.
     */
    modifier onlyRole(uint8 role) {
        if (!_hasRole(_getRoles(msg.sender), role)) revert MissingRole(msg.sender, role);

        _;
    }

    /**
     * @notice Modifier that throws an error if called by an account without all the roles.
     */
    modifier withEveryRole(uint8[] memory roles) {
        uint256 accountRoles = _toAccountRoles(roles);
        if (!_hasAllTheRoles(_getRoles(msg.sender), accountRoles)) revert MissingAllRoles(msg.sender, accountRoles);

        _;
    }

    /**
     * @notice Modifier that throws an error if called by an account without any of the roles.
     */
    modifier withAnyRole(uint8[] memory roles) {
        uint256 accountRoles = _toAccountRoles(roles);
        if (!_hasAnyOfRoles(_getRoles(msg.sender), accountRoles)) revert MissingAnyOfRoles(msg.sender, accountRoles);

        _;
    }

    /**
     * @notice Checks if an account has a role.
     * @param account The address to check
     * @param role The role to check
     * @return True if the account has the role, false otherwise
     */
    function hasRole(address account, uint8 role) public view returns (bool) {
        return _hasRole(_getRoles(account), role);
    }

    /**
     * @notice Internal function to convert an array of roles to a uint256.
     * @param roles The roles to convert
     * @return accountRoles The roles in uint256 format
     */
    function _toAccountRoles(uint8[] memory roles) internal pure returns (uint256) {
        uint256 length = roles.length;
        uint256 accountRoles;

        for (uint256 i = 0; i < length; ++i) {
            accountRoles |= (1 << roles[i]);
        }

        return accountRoles;
    }

    /**
     * @notice Internal function to get the key of the roles mapping.
     * @param account The address to get the key for
     * @return key The key of the roles mapping
     */
    function _rolesKey(address account) internal view virtual returns (bytes32 key) {
        return keccak256(abi.encodePacked(ROLES_PREFIX, account));
    }

    /**
     * @notice Internal function to get the roles of an account.
     * @param account The address to get the roles for
     * @return accountRoles The roles of the account in uint256 format
     */
    function _getRoles(address account) internal view returns (uint256 accountRoles) {
        bytes32 key = _rolesKey(account);
        assembly {
            accountRoles := sload(key)
        }
    }

    /**
     * @notice Internal function to set the roles of an account.
     * @param account The address to set the roles for
     * @param accountRoles The roles to set
     */
    function _setRoles(address account, uint256 accountRoles) private {
        bytes32 key = _rolesKey(account);
        assembly {
            sstore(key, accountRoles)
        }
    }

    /**
     * @notice Internal function to get the key of the proposed roles mapping.
     * @param fromAccount The address of the current role
     * @param toAccount The address of the pending role
     * @return key The key of the proposed roles mapping
     */
    function _proposalKey(address fromAccount, address toAccount) internal view virtual returns (bytes32 key) {
        return keccak256(abi.encodePacked(PROPOSE_ROLES_PREFIX, fromAccount, toAccount));
    }

    /**
     * @notice Internal function to get the proposed roles of an account.
     * @param fromAccount The address of the current role
     * @param toAccount The address of the pending role
     * @return proposedRoles_ The proposed roles of the account in uint256 format
     */
    function _getProposedRoles(address fromAccount, address toAccount) internal view returns (uint256 proposedRoles_) {
        bytes32 key = _proposalKey(fromAccount, toAccount);
        assembly {
            proposedRoles_ := sload(key)
        }
    }

    /**
     * @notice Internal function to set the proposed roles of an account.
     * @param fromAccount The address of the current role
     * @param toAccount The address of the pending role
     * @param proposedRoles_ The proposed roles to set in uint256 format
     */
    function _setProposedRoles(
        address fromAccount,
        address toAccount,
        uint256 proposedRoles_
    ) private {
        bytes32 key = _proposalKey(fromAccount, toAccount);
        assembly {
            sstore(key, proposedRoles_)
        }
    }

    /**
     * @notice Internal function to add a role to an account.
     * @dev emits a RolesAdded event.
     * @param account The address to add the role to
     * @param role The role to add
     */
    function _addRole(address account, uint8 role) internal {
        _addAccountRoles(account, 1 << role);
    }

    /**
     * @notice Internal function to add roles to an account.
     * @dev emits a RolesAdded event.
     * @dev Called in the constructor to set the initial roles.
     * @param account The address to add roles to
     * @param roles The roles to add
     */
    function _addRoles(address account, uint8[] memory roles) internal {
        _addAccountRoles(account, _toAccountRoles(roles));
    }

    /**
     * @notice Internal function to add roles to an account.
     * @dev emits a RolesAdded event.
     * @dev Called in the constructor to set the initial roles.
     * @param account The address to add roles to
     * @param accountRoles The roles to add
     */
    function _addAccountRoles(address account, uint256 accountRoles) internal {
        uint256 newAccountRoles = _getRoles(account) | accountRoles;

        _setRoles(account, newAccountRoles);

        emit RolesAdded(account, accountRoles);
    }

    /**
     * @notice Internal function to remove a role from an account.
     * @dev emits a RolesRemoved event.
     * @param account The address to remove the role from
     * @param role The role to remove
     */
    function _removeRole(address account, uint8 role) internal {
        _removeAccountRoles(account, 1 << role);
    }

    /**
     * @notice Internal function to remove roles from an account.
     * @dev emits a RolesRemoved event.
     * @param account The address to remove roles from
     * @param roles The roles to remove
     */
    function _removeRoles(address account, uint8[] memory roles) internal {
        _removeAccountRoles(account, _toAccountRoles(roles));
    }

    /**
     * @notice Internal function to remove roles from an account.
     * @dev emits a RolesRemoved event.
     * @param account The address to remove roles from
     * @param accountRoles The roles to remove
     */
    function _removeAccountRoles(address account, uint256 accountRoles) internal {
        uint256 newAccountRoles = _getRoles(account) & ~accountRoles;

        _setRoles(account, newAccountRoles);

        emit RolesRemoved(account, accountRoles);
    }

    /**
     * @notice Internal function to check if an account has a role.
     * @param accountRoles The roles of the account in uint256 format
     * @param role The role to check
     * @return True if the account has the role, false otherwise
     */
    function _hasRole(uint256 accountRoles, uint8 role) internal pure returns (bool) {
        return accountRoles & (1 << role) != 0;
    }

    /**
     * @notice Internal function to check if an account has all the roles.
     * @param hasAccountRoles The roles of the account in uint256 format
     * @param mustHaveAccountRoles The roles the account must have
     * @return True if the account has all the roles, false otherwise
     */
    function _hasAllTheRoles(uint256 hasAccountRoles, uint256 mustHaveAccountRoles) internal pure returns (bool) {
        return (hasAccountRoles & mustHaveAccountRoles) == mustHaveAccountRoles;
    }

    /**
     * @notice Internal function to check if an account has any of the roles.
     * @param hasAccountRoles The roles of the account in uint256 format
     * @param mustHaveAnyAccountRoles The roles to check in uint256 format
     * @return True if the account has any of the roles, false otherwise
     */
    function _hasAnyOfRoles(uint256 hasAccountRoles, uint256 mustHaveAnyAccountRoles) internal pure returns (bool) {
        return (hasAccountRoles & mustHaveAnyAccountRoles) != 0;
    }

    /**
     * @notice Internal function to propose to transfer roles of message sender to a new account.
     * @dev Original account must have all the proposed roles.
     * @dev Emits a RolesProposed event.
     * @dev Roles are not transferred until the new role accepts the role transfer.
     * @param fromAccount The address of the current roles
     * @param toAccount The address to transfer roles to
     * @param role The role to transfer
     */
    function _proposeRole(
        address fromAccount,
        address toAccount,
        uint8 role
    ) internal {
        _proposeAccountRoles(fromAccount, toAccount, 1 << role);
    }

    /**
     * @notice Internal function to propose to transfer roles of message sender to a new account.
     * @dev Original account must have all the proposed roles.
     * @dev Emits a RolesProposed event.
     * @dev Roles are not transferred until the new role accepts the role transfer.
     * @param fromAccount The address of the current roles
     * @param toAccount The address to transfer roles to
     * @param roles The roles to transfer
     */
    function _proposeRoles(
        address fromAccount,
        address toAccount,
        uint8[] memory roles
    ) internal {
        _proposeAccountRoles(fromAccount, toAccount, _toAccountRoles(roles));
    }

    /**
     * @notice Internal function to propose to transfer roles of message sender to a new account.
     * @dev Original account must have all the proposed roles.
     * @dev Emits a RolesProposed event.
     * @dev Roles are not transferred until the new role accepts the role transfer.
     * @param fromAccount The address of the current roles
     * @param toAccount The address to transfer roles to
     * @param accountRoles The account roles to transfer
     */
    function _proposeAccountRoles(
        address fromAccount,
        address toAccount,
        uint256 accountRoles
    ) internal {
        if (!_hasAllTheRoles(_getRoles(fromAccount), accountRoles)) revert MissingAllRoles(fromAccount, accountRoles);

        _setProposedRoles(fromAccount, toAccount, accountRoles);

        emit RolesProposed(fromAccount, toAccount, accountRoles);
    }

    /**
     * @notice Internal function to accept roles transferred from another account.
     * @dev Pending account needs to pass all the proposed roles.
     * @dev Emits RolesRemoved and RolesAdded events.
     * @param fromAccount The address of the current role
     * @param role The role to accept
     */
    function _acceptRole(
        address fromAccount,
        address toAccount,
        uint8 role
    ) internal virtual {
        _acceptAccountRoles(fromAccount, toAccount, 1 << role);
    }

    /**
     * @notice Internal function to accept roles transferred from another account.
     * @dev Pending account needs to pass all the proposed roles.
     * @dev Emits RolesRemoved and RolesAdded events.
     * @param fromAccount The address of the current role
     * @param roles The roles to accept
     */
    function _acceptRoles(
        address fromAccount,
        address toAccount,
        uint8[] memory roles
    ) internal virtual {
        _acceptAccountRoles(fromAccount, toAccount, _toAccountRoles(roles));
    }

    /**
     * @notice Internal function to accept roles transferred from another account.
     * @dev Pending account needs to pass all the proposed roles.
     * @dev Emits RolesRemoved and RolesAdded events.
     * @param fromAccount The address of the current role
     * @param accountRoles The account roles to accept
     */
    function _acceptAccountRoles(
        address fromAccount,
        address toAccount,
        uint256 accountRoles
    ) internal virtual {
        if (_getProposedRoles(fromAccount, toAccount) != accountRoles) {
            revert InvalidProposedRoles(fromAccount, toAccount, accountRoles);
        }

        _setProposedRoles(fromAccount, toAccount, 0);
        _transferAccountRoles(fromAccount, toAccount, accountRoles);
    }

    /**
     * @notice Internal function to transfer roles from one account to another.
     * @dev Original account must have all the proposed roles.
     * @param fromAccount The address of the current role
     * @param toAccount The address to transfer role to
     * @param role The role to transfer
     */
    function _transferRole(
        address fromAccount,
        address toAccount,
        uint8 role
    ) internal {
        _transferAccountRoles(fromAccount, toAccount, 1 << role);
    }

    /**
     * @notice Internal function to transfer roles from one account to another.
     * @dev Original account must have all the proposed roles.
     * @param fromAccount The address of the current role
     * @param toAccount The address to transfer role to
     * @param roles The roles to transfer
     */
    function _transferRoles(
        address fromAccount,
        address toAccount,
        uint8[] memory roles
    ) internal {
        _transferAccountRoles(fromAccount, toAccount, _toAccountRoles(roles));
    }

    /**
     * @notice Internal function to transfer roles from one account to another.
     * @dev Original account must have all the proposed roles.
     * @param fromAccount The address of the current role
     * @param toAccount The address to transfer role to
     * @param accountRoles The account roles to transfer
     */
    function _transferAccountRoles(
        address fromAccount,
        address toAccount,
        uint256 accountRoles
    ) internal {
        if (!_hasAllTheRoles(_getRoles(fromAccount), accountRoles)) revert MissingAllRoles(fromAccount, accountRoles);

        _removeAccountRoles(fromAccount, accountRoles);
        _addAccountRoles(toAccount, accountRoles);
    }
}

File 6 of 17 : ERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IERC20 } from '@axelar-network/axelar-gmp-sdk-solidity/contracts/interfaces/IERC20.sol';

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

    mapping(address => mapping(address => uint256)) public override allowance;

    uint256 public override totalSupply;
    uint256 internal constant UINT256_MAX = type(uint256).max;

    /**
     * @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) external virtual override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    /**
     * @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) external virtual override returns (bool) {
        _approve(msg.sender, 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) external virtual override returns (bool) {
        uint256 _allowance = allowance[sender][msg.sender];

        if (_allowance != UINT256_MAX) {
            _approve(sender, msg.sender, _allowance - amount);
        }

        _transfer(sender, recipient, 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) external virtual returns (bool) {
        _approve(msg.sender, spender, allowance[msg.sender][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) external virtual returns (bool) {
        _approve(msg.sender, spender, allowance[msg.sender][spender] - subtractedValue);
        return true;
    }

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

        balanceOf[sender] -= amount;
        balanceOf[recipient] += amount;
        emit Transfer(sender, recipient, amount);
    }

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

        totalSupply += amount;
        balanceOf[account] += amount;
        emit Transfer(address(0), account, amount);
    }

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

        balanceOf[account] -= amount;
        totalSupply -= amount;
        emit Transfer(account, address(0), amount);
    }

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

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

File 7 of 17 : ERC20Permit.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IERC20 } from '@axelar-network/axelar-gmp-sdk-solidity/contracts/interfaces/IERC20.sol';
import { IERC20Permit } from '@axelar-network/axelar-cgp-solidity/contracts/interfaces/IERC20Permit.sol';

import { ERC20 } from './ERC20.sol';

/**
 * @title ERC20Permit Contract
 * @dev Extension of ERC20 to include permit functionality (EIP-2612).
 * Allows for approval of ERC20 tokens by signature rather than transaction.
 */
abstract contract ERC20Permit is IERC20, IERC20Permit, ERC20 {
    error PermitExpired();
    error InvalidS();
    error InvalidV();
    error InvalidSignature();

    /**
     * @dev Represents hash of the EIP-712 Domain Separator.
     */
    bytes32 public nameHash;

    string private constant EIP191_PREFIX_FOR_EIP712_STRUCTURED_DATA = '\x19\x01';

    // keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)')
    bytes32 private constant DOMAIN_TYPE_SIGNATURE_HASH = bytes32(0x8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f);

    // keccak256('Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)')
    bytes32 private constant PERMIT_SIGNATURE_HASH = bytes32(0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9);

    /**
     * @dev Mapping of nonces for each address.
     */
    mapping(address => uint256) public nonces;

    /**
     * @notice Internal function to set the token name hash
     * @param name The token name
     */
    function _setNameHash(string memory name) internal {
        nameHash = keccak256(bytes(name));
    }

    /**
     * @notice Calculates the domain separator.
     * @dev This is not cached because chainid can change on chain forks.
     */
    // solhint-disable func-name-mixedcase
    // slither-disable-next-line naming-convention
    function DOMAIN_SEPARATOR() public view returns (bytes32) {
        return keccak256(abi.encode(DOMAIN_TYPE_SIGNATURE_HASH, nameHash, keccak256(bytes('1')), block.chainid, address(this)));
    }

    // solhint-enable func-name-mixedcase

    /**
     * @notice Permit the designated spender to spend the holder's tokens
     * @dev The permit function is used to allow a holder to designate a spender
     * to spend tokens on their behalf via a signed message.
     * @param issuer The address of the token holder
     * @param spender The address of the designated spender
     * @param value The number of tokens to be spent
     * @param deadline The time at which the permission to spend expires
     * @param v The recovery id of the signature
     * @param r Half of the ECDSA signature pair
     * @param s Half of the ECDSA signature pair
     */
    function permit(address issuer, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external {
        if (block.timestamp > deadline) revert PermitExpired();

        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) revert InvalidS();

        if (v != 27 && v != 28) revert InvalidV();

        bytes32 digest = keccak256(
            abi.encodePacked(
                EIP191_PREFIX_FOR_EIP712_STRUCTURED_DATA,
                DOMAIN_SEPARATOR(),
                keccak256(abi.encode(PERMIT_SIGNATURE_HASH, issuer, spender, value, nonces[issuer]++, deadline))
            )
        );

        address recoveredAddress = ecrecover(digest, v, r, s);

        if (recoveredAddress != issuer) revert InvalidSignature();

        // _approve will revert if issuer is address(0x0)
        _approve(issuer, spender, value);
    }
}

File 8 of 17 : InterchainToken.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { AddressBytes } from '@axelar-network/axelar-gmp-sdk-solidity/contracts/libs/AddressBytes.sol';

import { IInterchainToken } from '../interfaces/IInterchainToken.sol';

import { InterchainTokenStandard } from './InterchainTokenStandard.sol';
import { ERC20 } from './ERC20.sol';
import { ERC20Permit } from './ERC20Permit.sol';
import { Minter } from '../utils/Minter.sol';

/**
 * @title InterchainToken
 * @notice This contract implements an interchain token which extends InterchainToken functionality.
 * @dev This contract also inherits Minter and Implementation logic.
 */
contract InterchainToken is InterchainTokenStandard, ERC20, ERC20Permit, Minter, IInterchainToken {
    using AddressBytes for bytes;

    string public name;
    string public symbol;
    uint8 public decimals;
    bytes32 internal tokenId;
    address internal immutable interchainTokenService_;

    // bytes32(uint256(keccak256('interchain-token-initialized')) - 1);
    bytes32 internal constant INITIALIZED_SLOT = 0xc778385ecb3e8cecb82223fa1f343ec6865b2d64c65b0c15c7e8aef225d9e214;

    /**
     * @notice Constructs the InterchainToken contract.
     * @dev Makes the implementation act as if it has been setup already to disallow calls to init() (even though that would not achieve anything really).
     */
    constructor(address interchainTokenServiceAddress) {
        _initialize();

        if (interchainTokenServiceAddress == address(0)) revert InterchainTokenServiceAddressZero();

        interchainTokenService_ = interchainTokenServiceAddress;
    }

    /**
     * @notice Returns true if the contract has been setup.
     * @return initialized True if the contract has been setup, false otherwise.
     */
    function _isInitialized() internal view returns (bool initialized) {
        assembly {
            initialized := sload(INITIALIZED_SLOT)
        }
    }

    /**
     * @notice Sets initialized to true, to allow only a single init.
     */
    function _initialize() internal {
        assembly {
            sstore(INITIALIZED_SLOT, true)
        }
    }

    /**
     * @notice Returns the interchain token service
     * @return address The interchain token service contract
     */
    function interchainTokenService() public view override(InterchainTokenStandard, IInterchainToken) returns (address) {
        return interchainTokenService_;
    }

    /**
     * @notice Returns the tokenId for this token.
     * @return bytes32 The token manager contract.
     */
    function interchainTokenId() public view override(InterchainTokenStandard, IInterchainToken) returns (bytes32) {
        return tokenId;
    }

    /**
     * @notice Setup function to initialize contract parameters.
     * @param tokenId_ The tokenId of the token.
     * @param minter The address of the token minter.
     * @param tokenName The name of the token.
     * @param tokenSymbol The symbopl of the token.
     * @param tokenDecimals The decimals of the token.
     */
    function init(bytes32 tokenId_, address minter, string calldata tokenName, string calldata tokenSymbol, uint8 tokenDecimals) external {
        if (_isInitialized()) revert AlreadyInitialized();

        _initialize();

        if (tokenId_ == bytes32(0)) revert TokenIdZero();
        if (bytes(tokenName).length == 0) revert TokenNameEmpty();
        if (bytes(tokenSymbol).length == 0) revert TokenSymbolEmpty();

        name = tokenName;
        symbol = tokenSymbol;
        decimals = tokenDecimals;
        tokenId = tokenId_;

        /**
         * @dev Set the token service as a minter to allow it to mint and burn tokens.
         * Also add the provided address as a minter. If `address(0)` was provided,
         * add it as a minter to allow anyone to easily check that no custom minter was set.
         */
        _addMinter(interchainTokenService_);
        _addMinter(minter);

        _setNameHash(tokenName);
    }

    /**
     * @notice Function to mint new tokens.
     * @dev Can only be called by the minter address.
     * @param account The address that will receive the minted tokens.
     * @param amount The amount of tokens to mint.
     */
    function mint(address account, uint256 amount) external onlyRole(uint8(Roles.MINTER)) {
        _mint(account, amount);
    }

    /**
     * @notice Function to burn tokens.
     * @dev Can only be called by the minter address.
     * @param account The address that will have its tokens burnt.
     * @param amount The amount of tokens to burn.
     */
    function burn(address account, uint256 amount) external onlyRole(uint8(Roles.MINTER)) {
        _burn(account, amount);
    }

    /**
     * @notice A method to be overwritten that will decrease the allowance of the `spender` from `sender` by `amount`.
     * @dev Needs to be overwritten. This provides flexibility for the choice of ERC20 implementation used. Must revert if allowance is not sufficient.
     */
    function _spendAllowance(address sender, address spender, uint256 amount) internal override {
        uint256 _allowance = allowance[sender][spender];

        if (_allowance != UINT256_MAX) {
            _approve(sender, spender, _allowance - amount);
        }
    }
}

File 9 of 17 : InterchainTokenStandard.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IInterchainTokenStandard } from '../interfaces/IInterchainTokenStandard.sol';
import { ITransmitInterchainToken } from '../interfaces/ITransmitInterchainToken.sol';

/**
 * @title An example implementation of the IInterchainTokenStandard.
 * @notice The is an abstract contract that needs to be extended with an ERC20 implementation. See `InterchainToken` for an example implementation.
 */
abstract contract InterchainTokenStandard is IInterchainTokenStandard {
    /**
     * @notice Getter for the tokenId used for this token.
     * @dev Needs to be overwritten.
     * @return tokenId_ The tokenId that this token is registerred under.
     */
    function interchainTokenId() public view virtual returns (bytes32 tokenId_);

    /**
     * @notice Getter for the interchain token service.
     * @dev Needs to be overwritten.
     * @return service The address of the interchain token service.
     */
    function interchainTokenService() public view virtual returns (address service);

    /**
     * @notice Implementation of the interchainTransfer method
     * @dev We chose to either pass `metadata` as raw data on a remote contract call, or if no data is passed, just do a transfer.
     * A different implementation could use metadata to specify a function to invoke, or for other purposes as well.
     * @param destinationChain The destination chain identifier.
     * @param recipient The bytes representation of the address of the recipient.
     * @param amount The amount of token to be transferred.
     * @param metadata Either empty, just to facilitate an interchain transfer, or the data to be passed for an interchain contract call with transfer
     * as per semantics defined by the token service.
     */
    function interchainTransfer(
        string calldata destinationChain,
        bytes calldata recipient,
        uint256 amount,
        bytes calldata metadata
    ) external payable {
        address sender = msg.sender;

        _beforeInterchainTransfer(msg.sender, destinationChain, recipient, amount, metadata);

        ITransmitInterchainToken(interchainTokenService()).transmitInterchainTransfer{ value: msg.value }(
            interchainTokenId(),
            sender,
            destinationChain,
            recipient,
            amount,
            metadata
        );
    }

    /**
     * @notice Implementation of the interchainTransferFrom method
     * @dev We chose to either pass `metadata` as raw data on a remote contract call, or, if no data is passed, just do a transfer.
     * A different implementation could use metadata to specify a function to invoke, or for other purposes as well.
     * @param sender The sender of the tokens. They need to have approved `msg.sender` before this is called.
     * @param destinationChain The string representation of the destination chain.
     * @param recipient The bytes representation of the address of the recipient.
     * @param amount The amount of token to be transferred.
     * @param metadata Either empty, just to facilitate an interchain transfer, or the data to be passed to an interchain contract call and transfer.
     */
    function interchainTransferFrom(
        address sender,
        string calldata destinationChain,
        bytes calldata recipient,
        uint256 amount,
        bytes calldata metadata
    ) external payable {
        _spendAllowance(sender, msg.sender, amount);

        _beforeInterchainTransfer(sender, destinationChain, recipient, amount, metadata);

        ITransmitInterchainToken(interchainTokenService()).transmitInterchainTransfer{ value: msg.value }(
            interchainTokenId(),
            sender,
            destinationChain,
            recipient,
            amount,
            metadata
        );
    }

    /**
     * @notice A method to be overwritten that will be called before an interchain transfer. One can approve the tokenManager here if needed,
     * to allow users for a 1-call transfer in case of a lock-unlock token manager.
     * @param from The sender of the tokens. They need to have approved `msg.sender` before this is called.
     * @param destinationChain The string representation of the destination chain.
     * @param destinationAddress The bytes representation of the address of the recipient.
     * @param amount The amount of token to be transferred.
     * @param metadata Either empty, just to facilitate an interchain transfer, or the data to be passed to an interchain contract call and transfer.
     */
    function _beforeInterchainTransfer(
        address from,
        string calldata destinationChain,
        bytes calldata destinationAddress,
        uint256 amount,
        bytes calldata metadata
    ) internal virtual {}

    /**
     * @notice A method to be overwritten that will decrease the allowance of the `spender` from `sender` by `amount`.
     * @dev Needs to be overwritten. This provides flexibility for the choice of ERC20 implementation used. Must revert if allowance is not sufficient.
     */
    function _spendAllowance(address sender, address spender, uint256 amount) internal virtual;
}

File 10 of 17 : IERC20MintableBurnable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title IERC20MintableBurnable Interface
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20MintableBurnable {
    /**
     * @notice Function to mint new tokens.
     * @dev Can only be called by the minter address.
     * @param to The address that will receive the minted tokens.
     * @param amount The amount of tokens to mint.
     */
    function mint(address to, uint256 amount) external;

    /**
     * @notice Function to burn tokens.
     * @dev Can only be called by the minter address.
     * @param from The address that will have its tokens burnt.
     * @param amount The amount of tokens to burn.
     */
    function burn(address from, uint256 amount) external;
}

File 11 of 17 : IERC20Named.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IERC20 } from '@axelar-network/axelar-gmp-sdk-solidity/contracts/interfaces/IERC20.sol';

/**
 * @title IERC20Named Interface
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Named is IERC20 {
    /**
     * @notice Getter for the name of the token.
     * @return string Name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @notice Getter for the symbol of the token.
     * @return string The symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @notice Getter for the decimals of the token.
     * @return uint8 The decimals of the token.
     */
    function decimals() external view returns (uint8);
}

File 12 of 17 : IInterchainToken.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IInterchainTokenStandard } from './IInterchainTokenStandard.sol';
import { IMinter } from './IMinter.sol';
import { IERC20MintableBurnable } from './IERC20MintableBurnable.sol';
import { IERC20Named } from './IERC20Named.sol';

/**
 * @title IInterchainToken interface
 * @dev Extends IInterchainTokenStandard and IMinter.
 */
interface IInterchainToken is IInterchainTokenStandard, IMinter, IERC20MintableBurnable, IERC20Named {
    error InterchainTokenServiceAddressZero();
    error TokenIdZero();
    error TokenNameEmpty();
    error TokenSymbolEmpty();
    error AlreadyInitialized();

    /**
     * @notice Getter for the interchain token service contract.
     * @dev Needs to be overwitten.
     * @return interchainTokenServiceAddress The interchain token service address.
     */
    function interchainTokenService() external view returns (address interchainTokenServiceAddress);

    /**
     * @notice Getter for the tokenId used for this token.
     * @dev Needs to be overwitten.
     * @return tokenId_ The tokenId for this token.
     */
    function interchainTokenId() external view returns (bytes32 tokenId_);

    /**
     * @notice Setup function to initialize contract parameters.
     * @param tokenId_ The tokenId of the token.
     * @param minter The address of the token minter.
     * @param tokenName The name of the token.
     * @param tokenSymbol The symbopl of the token.
     * @param tokenDecimals The decimals of the token.
     */
    function init(bytes32 tokenId_, address minter, string calldata tokenName, string calldata tokenSymbol, uint8 tokenDecimals) external;
}

File 13 of 17 : IInterchainTokenStandard.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title IInterchainTokenStandard interface
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IInterchainTokenStandard {
    /**
     * @notice Implementation of the interchainTransfer method.
     * @dev We chose to either pass `metadata` as raw data on a remote contract call, or if no data is passed, just do a transfer.
     * A different implementation could use metadata to specify a function to invoke, or for other purposes as well.
     * @param destinationChain The destination chain identifier.
     * @param recipient The bytes representation of the address of the recipient.
     * @param amount The amount of token to be transferred.
     * @param metadata Optional metadata for the call for additional effects (such as calling a destination contract).
     */
    function interchainTransfer(
        string calldata destinationChain,
        bytes calldata recipient,
        uint256 amount,
        bytes calldata metadata
    ) external payable;

    /**
     * @notice Implementation of the interchainTransferFrom method
     * @dev We chose to either pass `metadata` as raw data on a remote contract call, or, if no data is passed, just do a transfer.
     * A different implementation could use metadata to specify a function to invoke, or for other purposes as well.
     * @param sender The sender of the tokens. They need to have approved `msg.sender` before this is called.
     * @param destinationChain The string representation of the destination chain.
     * @param recipient The bytes representation of the address of the recipient.
     * @param amount The amount of token to be transferred.
     * @param metadata Optional metadata for the call for additional effects (such as calling a destination contract.)
     */
    function interchainTransferFrom(
        address sender,
        string calldata destinationChain,
        bytes calldata recipient,
        uint256 amount,
        bytes calldata metadata
    ) external payable;
}

File 14 of 17 : IMinter.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IRolesBase } from '@axelar-network/axelar-gmp-sdk-solidity/contracts/interfaces/IRolesBase.sol';

/**
 * @title IMinter Interface
 * @notice An interface for a contract module which provides a basic access control mechanism, where
 * there is an account (a minter) that can be granted exclusive access to specific functions.
 */
interface IMinter is IRolesBase {
    /**
     * @notice Change the minter of the contract.
     * @dev Can only be called by the current minter.
     * @param minter_ The address of the new minter.
     */
    function transferMintership(address minter_) external;

    /**
     * @notice Proposed a change of the minter of the contract.
     * @dev Can only be called by the current minter.
     * @param minter_ The address of the new minter.
     */
    function proposeMintership(address minter_) external;

    /**
     * @notice Accept a change of the minter of the contract.
     * @dev Can only be called by the proposed minter.
     * @param fromMinter The previous minter.
     */
    function acceptMintership(address fromMinter) external;

    /**
     * @notice Query if an address is a minter
     * @param addr the address to query for
     * @return bool Boolean value representing whether or not the address is a minter.
     */
    function isMinter(address addr) external view returns (bool);
}

File 15 of 17 : ITransmitInterchainToken.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title ITransmitInterchainToken Interface
 * @notice Interface for transmiting interchain tokens via the interchain token service
 */
interface ITransmitInterchainToken {
    /**
     * @notice Transmit an interchain transfer for the given tokenId.
     * @dev Only callable by a token registered under a tokenId.
     * @param tokenId The tokenId of the token (which must be the msg.sender).
     * @param sourceAddress The address where the token is coming from.
     * @param destinationChain The name of the chain to send tokens to.
     * @param destinationAddress The destinationAddress for the interchainTransfer.
     * @param amount The amount of token to give.
     * @param metadata Optional metadata for the call for additional effects (such as calling a destination contract).
     */
    function transmitInterchainTransfer(
        bytes32 tokenId,
        address sourceAddress,
        string calldata destinationChain,
        bytes memory destinationAddress,
        uint256 amount,
        bytes calldata metadata
    ) external payable;
}

File 16 of 17 : Minter.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IMinter } from '../interfaces/IMinter.sol';

import { RolesBase } from '@axelar-network/axelar-gmp-sdk-solidity/contracts/utils/RolesBase.sol';
import { RolesConstants } from './RolesConstants.sol';

/**
 * @title Minter Contract
 * @notice A contract module which provides a basic access control mechanism, where
 * there is an account (a minter) that can be granted exclusive access to
 * specific functions.
 * @dev This module is used through inheritance.
 */
contract Minter is IMinter, RolesBase, RolesConstants {
    /**
     * @notice Internal function that stores the new minter address in the correct storage slot.
     * @param minter_ The address of the new minter.
     */
    function _addMinter(address minter_) internal {
        _addRole(minter_, uint8(Roles.MINTER));
    }

    /**
     * @notice Changes the minter of the contract.
     * @dev Can only be called by the current minter.
     * @param minter_ The address of the new minter.
     */
    function transferMintership(address minter_) external onlyRole(uint8(Roles.MINTER)) {
        _transferRole(msg.sender, minter_, uint8(Roles.MINTER));
    }

    /**
     * @notice Proposes a change of the minter of the contract.
     * @dev Can only be called by the current minter.
     * @param minter_ The address of the new minter.
     */
    function proposeMintership(address minter_) external onlyRole(uint8(Roles.MINTER)) {
        _proposeRole(msg.sender, minter_, uint8(Roles.MINTER));
    }

    /**
     * @notice Accept a change of the minter of the contract.
     * @dev Can only be called by the proposed minter.
     * @param fromMinter The previous minter.
     */
    function acceptMintership(address fromMinter) external {
        _acceptRole(fromMinter, msg.sender, uint8(Roles.MINTER));
    }

    /**
     * @notice Query if an address is a minter
     * @param addr the address to query for
     * @return bool Boolean value representing whether or not the address is a minter.
     */
    function isMinter(address addr) external view returns (bool) {
        return hasRole(addr, uint8(Roles.MINTER));
    }
}

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

pragma solidity ^0.8.0;

/**
 * @title RolesConstants
 * @notice This contract contains enum values representing different contract roles.
 */
contract RolesConstants {
    enum Roles {
        MINTER,
        OPERATOR,
        FLOW_LIMITER
    }
}

Settings
{
  "evmVersion": "london",
  "optimizer": {
    "enabled": true,
    "runs": 1000,
    "details": {
      "peephole": true,
      "inliner": true,
      "jumpdestRemover": true,
      "orderLiterals": true,
      "deduplicate": true,
      "cse": true,
      "constantOptimizer": true,
      "yul": true,
      "yulDetails": {
        "stackAllocation": true
      }
    }
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract ABI

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