Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- ERC223
- Optimization enabled
- true
- Compiler version
- v0.8.19+commit.7dd6d404
- Optimization runs
- 200
- EVM Version
- default
- Verified at
- 2024-09-26T15:31:39.759930Z
Constructor Arguments
0x00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000b5669727475616c2055534400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000045655534400000000000000000000000000000000000000000000000000000000
Arg [0] (string) : Virtual USD
Arg [1] (string) : VUSD
Contract source code
// SPDX-License-Identifier: No License (None)
pragma solidity 0.8.19;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* This test is non-exhaustive, and there may be false-negatives: during the
* execution of a contract's constructor, its address will be reported as
* not containing a contract.
*
* > It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly {
size := extcodesize(account)
}
return size > 0;
}
}
interface IERC223 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the token decimals.
*/
function decimals() external view returns (uint8);
/**
* @dev Returns the token symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the token name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token standard.
*/
function standard() external pure returns (string memory);
/**
* @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);
function transfer(
address recipient,
uint256 amount,
bytes calldata data
) 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);
event TransferData(bytes data);
/**
* @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
);
}
interface IERC223Recipient {
function tokenReceived(
address _from,
uint _value,
bytes calldata _data
) external;
}
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_owner = msg.sender;
emit OwnershipTransferred(address(0), msg.sender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == msg.sender, "Ownable: caller is not the owner");
_;
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract ERC223 is IERC223, Ownable {
using Address for address;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
uint8 private _decimals;
string private _symbol;
string private _name;
address public minter;
event SetMinter(address previousMinter, address newMinter);
event Rescued(address to, bytes data);
/**
* @dev Throws if called by any account other than the minter.
*/
modifier onlyMinter() {
require(msg.sender == minter, "Caller is not admin");
_;
}
constructor(string memory name_, string memory symbol_) {
minter = msg.sender;
emit SetMinter(address(0), minter);
_name = name_;
_symbol = symbol_;
_decimals = 18;
}
// allow owner to change minter. Set minter to address(0) to forbid minting
function setMinter(address newMinter) external onlyOwner {
require(minter != address(0), "Minting is forbidden");
emit SetMinter(minter, newMinter);
minter = newMinter;
}
/**
* @dev Mint tokens to user in amount of his deposit. Used by bridge to mint wrapped tokens
* @param user - address of user's wallet
* @param amount - amount of token to mint (should be equivalent of USDT amount of deposit)
*/
function mint(address user, uint256 amount) external onlyMinter {
_mint(user, amount);
}
/**
* @dev Returns the token decimals.
*/
function decimals() external view override returns (uint8) {
return _decimals;
}
/**
* @dev Returns the token symbol.
*/
function symbol() external view override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the token name.
*/
function name() external view override returns (string memory) {
return _name;
}
/**
* @dev Returns the token standard.
*/
function standard() external pure override returns (string memory) {
return "erc223";
}
/**
* @dev See {ERC223-totalSupply}.
*/
function totalSupply() external view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {ERC223-balanceOf}.
*/
function balanceOf(
address account
) external view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {ERC223-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(
address recipient,
uint amount
) external override returns (bool) {
_transfer(msg.sender, recipient, amount);
if (recipient.isContract()) {
IERC223Recipient(recipient).tokenReceived(msg.sender, amount, "");
}
emit TransferData("");
return true;
}
function transfer(
address recipient,
uint amount,
bytes calldata data
) external override returns (bool) {
_transfer(msg.sender, recipient, amount);
if (recipient.isContract()) {
IERC223Recipient(recipient).tokenReceived(msg.sender, amount, data);
}
emit TransferData(data);
return true;
}
/**
* @dev See {ERC223-allowance}.
*/
function allowance(
address owner,
address spender
) external view override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {ERC223-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(
address spender,
uint256 amount
) external override returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
/**
* @dev See {ERC223-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC223};
*
* 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 override returns (bool) {
_transfer(sender, recipient, amount);
require(
_allowances[sender][msg.sender] >= amount,
"ERC223: transfer amount exceeds allowance"
);
_approve(sender, msg.sender, _allowances[sender][msg.sender] - 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 {ERC223-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(
address spender,
uint256 addedValue
) public returns (bool) {
_approve(
msg.sender,
spender,
_allowances[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 {ERC223-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 returns (bool) {
uint256 newAllawnce;
if (_allowances[spender][msg.sender] > subtractedValue) {
newAllawnce = _allowances[msg.sender][spender] - subtractedValue;
}
_approve(msg.sender, spender, newAllawnce);
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 {
require(sender != address(0), "ERC223: transfer from the zero address");
require(
recipient != address(0),
"ERC223: transfer to the zero address"
);
require(
_balances[sender] >= amount,
"ERC223: transfer amount exceeds balance"
);
_balances[sender] = _balances[sender] - amount;
_balances[recipient] = _balances[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 {
require(account != address(0), "ERC223: mint to the zero address");
_totalSupply = _totalSupply + amount;
_balances[account] = _balances[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 {
require(account != address(0), "ERC223: burn from the zero address");
require(
_balances[account] >= amount,
"ERC223: burn amount exceeds balance"
);
_balances[account] = _balances[account] - amount;
_totalSupply = _totalSupply - amount;
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is 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 {
require(owner != address(0), "ERC223: approve from the zero address");
require(spender != address(0), "ERC223: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Destroys `amount` tokens from `account`.`amount` is then deducted
* from the caller's allowance.
*
* See {_burn} and {_approve}.
*/
function _burnFrom(address account, uint256 amount) internal {
_burn(account, amount);
require(
_allowances[account][msg.sender] >= amount,
"ERC223: transfer amount exceeds allowance"
);
_approve(
account,
msg.sender,
_allowances[account][msg.sender] - amount
);
}
function burnFrom(address account, uint256 amount) external returns (bool) {
_burnFrom(account, amount);
return true;
}
function burn(uint256 amount) external returns (bool) {
_burn(msg.sender, amount);
return true;
}
event Rescue(address _token, uint256 _amount);
function rescueTokens(address _token) external onlyOwner {
uint256 amount = IERC223(_token).balanceOf(address(this));
safeTransfer(_token, msg.sender, amount);
emit Rescue(_token, amount);
}
function safeTransfer(address token, address to, uint value) internal {
// bytes4(keccak256(bytes('transfer(address,uint256)')));
(bool success, bytes memory data) = token.call(
abi.encodeWithSelector(0xa9059cbb, to, value)
);
require(
success && (data.length == 0 || abi.decode(data, (bool))),
"TransferHelper: TRANSFER_FAILED"
);
}
}
Contract ABI
[{"type":"constructor","stateMutability":"nonpayable","inputs":[{"type":"string","name":"name_","internalType":"string"},{"type":"string","name":"symbol_","internalType":"string"}]},{"type":"event","name":"Approval","inputs":[{"type":"address","name":"owner","internalType":"address","indexed":true},{"type":"address","name":"spender","internalType":"address","indexed":true},{"type":"uint256","name":"value","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"OwnershipTransferred","inputs":[{"type":"address","name":"previousOwner","internalType":"address","indexed":true},{"type":"address","name":"newOwner","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"Rescue","inputs":[{"type":"address","name":"_token","internalType":"address","indexed":false},{"type":"uint256","name":"_amount","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"Rescued","inputs":[{"type":"address","name":"to","internalType":"address","indexed":false},{"type":"bytes","name":"data","internalType":"bytes","indexed":false}],"anonymous":false},{"type":"event","name":"SetMinter","inputs":[{"type":"address","name":"previousMinter","internalType":"address","indexed":false},{"type":"address","name":"newMinter","internalType":"address","indexed":false}],"anonymous":false},{"type":"event","name":"Transfer","inputs":[{"type":"address","name":"from","internalType":"address","indexed":true},{"type":"address","name":"to","internalType":"address","indexed":true},{"type":"uint256","name":"value","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"TransferData","inputs":[{"type":"bytes","name":"data","internalType":"bytes","indexed":false}],"anonymous":false},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"allowance","inputs":[{"type":"address","name":"owner","internalType":"address"},{"type":"address","name":"spender","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"approve","inputs":[{"type":"address","name":"spender","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"balanceOf","inputs":[{"type":"address","name":"account","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"burn","inputs":[{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"burnFrom","inputs":[{"type":"address","name":"account","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint8","name":"","internalType":"uint8"}],"name":"decimals","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"decreaseAllowance","inputs":[{"type":"address","name":"spender","internalType":"address"},{"type":"uint256","name":"subtractedValue","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"increaseAllowance","inputs":[{"type":"address","name":"spender","internalType":"address"},{"type":"uint256","name":"addedValue","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"mint","inputs":[{"type":"address","name":"user","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"minter","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"string","name":"","internalType":"string"}],"name":"name","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"owner","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"rescueTokens","inputs":[{"type":"address","name":"_token","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setMinter","inputs":[{"type":"address","name":"newMinter","internalType":"address"}]},{"type":"function","stateMutability":"pure","outputs":[{"type":"string","name":"","internalType":"string"}],"name":"standard","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"string","name":"","internalType":"string"}],"name":"symbol","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"totalSupply","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"transfer","inputs":[{"type":"address","name":"recipient","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"transfer","inputs":[{"type":"address","name":"recipient","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"},{"type":"bytes","name":"data","internalType":"bytes"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"transferFrom","inputs":[{"type":"address","name":"sender","internalType":"address"},{"type":"address","name":"recipient","internalType":"address"},{"type":"uint256","name":"amount","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferOwnership","inputs":[{"type":"address","name":"newOwner","internalType":"address"}]}]
Contract Creation Code
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