Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

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

/// @title BETH - Burned ETH
/// @notice Immutable ERC-20 token representing provably burnt ETH. Sending ETH mints 1:1 BETH and forwards
/// the ETH to the canonical burn address.
/// @author Built by Zak Cole (x.com/0xzak, github.com/zscole) at Number Group (numbergroup.xyz) for the Ethereum Community Foundation (ethcf.org).
/// @dev This contract is non-upgradeable and has no privileged roles. It relies on ETH forwarding via
/// low-level call; failures revert. Forced ETH (e.g., via selfdestruct) can be flushed without minting.
contract BETH is ERC20 {
    /// @notice Canonical Ethereum burn address used as the ETH sink
    /// @dev This is a constant well-known address to which ETH is forwarded
    address public constant ETH_BURN_ADDRESS = 0x0000000000000000000000000000000000000000;

    /// @notice Error for zero-value deposits
    /// @dev Thrown when msg.value == 0 in deposit paths
    error ZeroDeposit();
    /// @notice Error when forwarding ETH fails
    /// @dev Thrown if the low-level call to the burn address returns false
    error ForwardFailed();

    /// @notice Emitted when ETH is forwarded to the burn address
    /// @param from The address providing the ETH being forwarded
    /// @param amount The amount of ETH forwarded, in wei
    event Burned(address indexed from, uint256 amount);
    /// @notice Emitted when BETH is minted
    /// @param to The address receiving newly minted BETH
    /// @param amount The amount of BETH minted, in wei (1:1 with ETH)
    event Minted(address indexed to, uint256 amount);

    uint256 private _totalBurned;

    /// @notice Deploy the BETH token
    /// @dev Initializes the ERC-20 name and symbol
    constructor() ERC20("BETH", "BETH") { }

    /// @inheritdoc ERC20
    function decimals() public pure override returns (uint8) {
        return 18;
    }

    /// @notice Total ETH permanently destroyed through this contract
    /// @dev Tracks ETH forwarded via deposits/receive and via flush(); does not include unflushed forced ETH
    /// @return burned The cumulative ETH amount accounted as burned, in wei
    function totalBurned() external view returns (uint256 burned) {
        return _totalBurned;
    }

    /// @notice Deposit ETH and mint BETH to the sender 1:1
    /// @dev Reverts on zero-value; forwards ETH before minting
    function deposit() external payable {
        _depositTo(msg.sender);
    }

    /// @notice Deposit ETH and mint BETH to a specified recipient 1:1
    /// @dev Reverts on zero-value; forwards ETH before minting
    /// @param recipient The address to receive minted BETH
    function depositTo(address recipient) external payable {
        _depositTo(recipient);
    }

    /// @notice Accept direct ETH transfers and mint BETH to the sender
    /// @dev Forwards ETH before minting; identical accounting to deposit()
    receive() external payable {
        _depositTo(msg.sender);
    }

    /// @notice Forward any stray ETH balance to the burn address without minting
    /// @dev Handles ETH force-sent to the contract (e.g., via selfdestruct). Increases totalBurned only.
    function flush() external {
        uint256 amount = address(this).balance;
        if (amount == 0) return;
        // Effects first to satisfy static analyzers; revert will roll back on failure below
        _totalBurned += amount;
        emit Burned(address(this), amount);
        (bool success,) = payable(ETH_BURN_ADDRESS).call{ value: amount }("");
        if (!success) revert ForwardFailed();
    }

    /// @notice Internal helper to forward ETH then mint BETH 1:1
    /// @dev Forwards ETH to the burn address, then mints to `recipient` on success.
    /// @param recipient The address to receive newly minted BETH
    /// @return mintedAmount The amount of BETH minted, in wei
    function _depositTo(address recipient) private returns (uint256 mintedAmount) {
        uint256 amount = msg.value;
        if (amount == 0) revert ZeroDeposit();

        // Forward ETH to the burn address
        (bool success,) = payable(ETH_BURN_ADDRESS).call{ value: amount }("");
        if (!success) revert ForwardFailed();

        // Mint BETH after successful forwarding
        _mint(recipient, amount);
        _totalBurned += amount;

        emit Burned(msg.sender, amount);
        emit Minted(recipient, amount);

        return amount;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC20Metadata} from "./extensions/IERC20Metadata.sol";
import {Context} from "../../utils/Context.sol";
import {IERC20Errors} from "../../interfaces/draft-IERC6093.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}.
 *
 * 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].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * 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.
 */
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

    mapping(address account => mapping(address spender => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * 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 returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual 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 default value returned by this function, unless
     * it's 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 returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual 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 `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` 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 value) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        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 `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Moves a `value` 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.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` 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.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     * ```
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 */
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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;

/**
 * @dev Standard ERC20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

{
  "remappings": [
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "forge-std/=lib/forge-std/src/",
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "ds-test/=lib/openzeppelin-contracts/lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "none",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"allowance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"ERC20InsufficientAllowance","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"balance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"ERC20InsufficientBalance","type":"error"},{"inputs":[{"internalType":"address","name":"approver","type":"address"}],"name":"ERC20InvalidApprover","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"ERC20InvalidReceiver","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"ERC20InvalidSender","type":"error"},{"inputs":[{"internalType":"address","name":"spender","type":"address"}],"name":"ERC20InvalidSpender","type":"error"},{"inputs":[],"name":"ForwardFailed","type":"error"},{"inputs":[],"name":"ZeroDeposit","type":"error"},{"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":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Burned","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Minted","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":"ETH_BURN_ADDRESS","outputs":[{"internalType":"address","name":"","type":"address"}],"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":"value","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":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"deposit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"}],"name":"depositTo","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"flush","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalBurned","outputs":[{"internalType":"uint256","name":"burned","type":"uint256"}],"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":"value","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":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

0x6080604052600436106100e15760003560e01c806370a082311161007f578063b760faf911610059578063b760faf914610259578063d0e30db01461026c578063d89135cd14610274578063dd62ed3e1461028957600080fd5b806370a08231146101ee57806395d89b4114610224578063a9059cbb1461023957600080fd5b806323b872dd116100bb57806323b872dd14610170578063313ce567146101905780636a91d41a146101ac5780636b9f96ea146101d957600080fd5b806306fdde03146100f6578063095ea7b31461012157806318160ddd1461015157600080fd5b366100f1576100ef336102cf565b005b600080fd5b34801561010257600080fd5b5061010b6103fb565b60405161011891906108e8565b60405180910390f35b34801561012d57600080fd5b5061014161013c366004610953565b61048d565b6040519015158152602001610118565b34801561015d57600080fd5b506002545b604051908152602001610118565b34801561017c57600080fd5b5061014161018b36600461097d565b6104a7565b34801561019c57600080fd5b5060405160128152602001610118565b3480156101b857600080fd5b506101c1600081565b6040516001600160a01b039091168152602001610118565b3480156101e557600080fd5b506100ef6104cb565b3480156101fa57600080fd5b506101626102093660046109b9565b6001600160a01b031660009081526020819052604090205490565b34801561023057600080fd5b5061010b610591565b34801561024557600080fd5b50610141610254366004610953565b6105a0565b6100ef6102673660046109b9565b6105ae565b6100ef6105b7565b34801561028057600080fd5b50600554610162565b34801561029557600080fd5b506101626102a43660046109db565b6001600160a01b03918216600090815260016020908152604080832093909416825291909152205490565b6000348082036102f2576040516356316e8760e01b815260040160405180910390fd5b604051600090819083908281818185825af1925050503d8060008114610334576040519150601f19603f3d011682016040523d82523d6000602084013e610339565b606091505b505090508061035b5760405163096dc0e160e01b815260040160405180910390fd5b61036584836105c3565b81600560008282546103779190610a0e565b909155505060405182815233907f696de425f79f4a40bc6d2122ca50507f0efbeabbff86a84871b7196ab8ea8df79060200160405180910390a2836001600160a01b03167f30385c845b448a36257a6a1716e6ad2e1bc2cbe333cde1e69fe849ad6511adfe836040516103ec91815260200190565b60405180910390a25092915050565b60606003805461040a90610a2f565b80601f016020809104026020016040519081016040528092919081815260200182805461043690610a2f565b80156104835780601f1061045857610100808354040283529160200191610483565b820191906000526020600020905b81548152906001019060200180831161046657829003601f168201915b5050505050905090565b60003361049b8185856105fe565b60019150505b92915050565b6000336104b5858285610610565b6104c085858561068e565b506001949350505050565b4760008190036104d85750565b80600560008282546104ea9190610a0e565b909155505060405181815230907f696de425f79f4a40bc6d2122ca50507f0efbeabbff86a84871b7196ab8ea8df79060200160405180910390a2604051600090819083908281818185825af1925050503d8060008114610566576040519150601f19603f3d011682016040523d82523d6000602084013e61056b565b606091505b505090508061058d5760405163096dc0e160e01b815260040160405180910390fd5b5050565b60606004805461040a90610a2f565b60003361049b81858561068e565b61058d816102cf565b6105c0336102cf565b50565b6001600160a01b0382166105f25760405163ec442f0560e01b8152600060048201526024015b60405180910390fd5b61058d600083836106e9565b61060b8383836001610813565b505050565b6001600160a01b038381166000908152600160209081526040808320938616835292905220546000198114610688578181101561067957604051637dc7a0d960e11b81526001600160a01b038416600482015260248101829052604481018390526064016105e9565b61068884848484036000610813565b50505050565b6001600160a01b0383166106b857604051634b637e8f60e11b8152600060048201526024016105e9565b6001600160a01b0382166106e25760405163ec442f0560e01b8152600060048201526024016105e9565b61060b8383835b6001600160a01b0383166107145780600260008282546107099190610a0e565b909155506107869050565b6001600160a01b038316600090815260208190526040902054818110156107675760405163391434e360e21b81526001600160a01b038516600482015260248101829052604481018390526064016105e9565b6001600160a01b03841660009081526020819052604090209082900390555b6001600160a01b0382166107a2576002805482900390556107c1565b6001600160a01b03821660009081526020819052604090208054820190555b816001600160a01b0316836001600160a01b03167fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef8360405161080691815260200190565b60405180910390a3505050565b6001600160a01b03841661083d5760405163e602df0560e01b8152600060048201526024016105e9565b6001600160a01b03831661086757604051634a1406b160e11b8152600060048201526024016105e9565b6001600160a01b038085166000908152600160209081526040808320938716835292905220829055801561068857826001600160a01b0316846001600160a01b03167f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925846040516108da91815260200190565b60405180910390a350505050565b60006020808352835180602085015260005b81811015610916578581018301518582016040015282016108fa565b506000604082860101526040601f19601f8301168501019250505092915050565b80356001600160a01b038116811461094e57600080fd5b919050565b6000806040838503121561096657600080fd5b61096f83610937565b946020939093013593505050565b60008060006060848603121561099257600080fd5b61099b84610937565b92506109a960208501610937565b9150604084013590509250925092565b6000602082840312156109cb57600080fd5b6109d482610937565b9392505050565b600080604083850312156109ee57600080fd5b6109f783610937565b9150610a0560208401610937565b90509250929050565b808201808211156104a157634e487b7160e01b600052601160045260246000fd5b600181811c90821680610a4357607f821691505b602082108103610a6357634e487b7160e01b600052602260045260246000fd5b5091905056fea164736f6c6343000818000a