Contract 0x67a24ce4321ab3af51c2d0a4801c3e111d88c9d9 19

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @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 is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @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");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (governance/utils/IVotes.sol)
pragma solidity ^0.8.0;

/**
 * @dev Common interface for {ERC20Votes}, {ERC721Votes}, and other {Votes}-enabled contracts.
 *
 * _Available since v4.5._
 */
interface IVotesUpgradeable {
    /**
     * @dev Emitted when an account changes their delegate.
     */
    event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);

    /**
     * @dev Emitted when a token transfer or delegate change results in changes to a delegate's number of votes.
     */
    event DelegateVotesChanged(address indexed delegate, uint256 previousBalance, uint256 newBalance);

    /**
     * @dev Returns the current amount of votes that `account` has.
     */
    function getVotes(address account) external view returns (uint256);

    /**
     * @dev Returns the amount of votes that `account` had at the end of a past block (`blockNumber`).
     */
    function getPastVotes(address account, uint256 blockNumber) external view returns (uint256);

    /**
     * @dev Returns the total supply of votes available at the end of a past block (`blockNumber`).
     *
     * NOTE: This value is the sum of all available votes, which is not necessarily the sum of all delegated votes.
     * Votes that have not been delegated are still part of total supply, even though they would not participate in a
     * vote.
     */
    function getPastTotalSupply(uint256 blockNumber) external view returns (uint256);

    /**
     * @dev Returns the delegate that `account` has chosen.
     */
    function delegates(address account) external view returns (address);

    /**
     * @dev Delegates votes from the sender to `delegatee`.
     */
    function delegate(address delegatee) external;

    /**
     * @dev Delegates votes from signer to `delegatee`.
     */
    function delegateBySig(
        address delegatee,
        uint256 nonce,
        uint256 expiry,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
}

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

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Upgradeable {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20PermitUpgradeable {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.16;

import {IERC20VotesUpgradeable} from "./Util.sol";

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";

/// @title  Token Distributor
/// @notice Holds tokens for users to claim.
/// @dev    Unlike a merkle distributor this contract uses storage to record claims rather than a
///         merkle root. This is because calldata on Arbitrum is relatively expensive when compared with
///         storage, since calldata uses L1 gas.
///         After construction do the following
///         1. transfer tokens to this contract
///         2. setRecipients - called as many times as required to set all the recipients
///         3. transferOwnership - the ownership of the contract should be transferred to a new owner (eg DAO) after all recipients have been set
contract TokenDistributor is Ownable {
    /// @notice Token to be distributed
    IERC20VotesUpgradeable public immutable token;
    /// @notice Address to receive tokens that were not claimed
    address payable public sweepReceiver;
    /// @notice amount of tokens that can be claimed by address
    mapping(address => uint256) public claimableTokens;
    /// @notice Total amount of tokens claimable by recipients of this contract
    uint256 public totalClaimable;
    /// @notice Block number at which claiming starts
    uint256 public immutable claimPeriodStart;
    /// @notice Block number at which claiming ends
    uint256 public immutable claimPeriodEnd;

    /// @notice recipient can claim this amount of tokens
    event CanClaim(address indexed recipient, uint256 amount);
    /// @notice recipient has claimed this amount of tokens
    event HasClaimed(address indexed recipient, uint256 amount);
    /// @notice leftover tokens after claiming period have been swept
    event Swept(uint256 amount);
    /// @notice new address set to receive unclaimed tokens
    event SweepReceiverSet(address indexed newSweepReceiver);
    /// @notice Tokens withdrawn
    event Withdrawal(address indexed recipient, uint256 amount);

    constructor(
        IERC20VotesUpgradeable _token,
        address payable _sweepReceiver,
        address _owner,
        uint256 _claimPeriodStart,
        uint256 _claimPeriodEnd,
        address delegateTo
    ) Ownable() {
        require(address(_token) != address(0), "TokenDistributor: zero token address");
        require(_sweepReceiver != address(0), "TokenDistributor: zero sweep address");
        require(_owner != address(0), "TokenDistributor: zero owner address");
        require(_claimPeriodStart > block.number, "TokenDistributor: start should be in the future");
        require(_claimPeriodEnd > _claimPeriodStart, "TokenDistributor: start should be before end");
        require(delegateTo != address(0), "TokenDistributor: zero delegate to");

        _token.delegate(delegateTo);
        token = _token;
        _setSweepReciever(_sweepReceiver);
        claimPeriodStart = _claimPeriodStart;
        claimPeriodEnd = _claimPeriodEnd;
        _transferOwnership(_owner);
    }

    /// @notice Allows owner to update address of sweep receiver
    function setSweepReciever(address payable _sweepReceiver) external onlyOwner {
        _setSweepReciever(_sweepReceiver);
    }

    function _setSweepReciever(address payable _sweepReceiver) internal {
        require(_sweepReceiver != address(0), "TokenDistributor: zero sweep receiver address");
        sweepReceiver = _sweepReceiver;
        emit SweepReceiverSet(_sweepReceiver);
    }

    /// @notice Allows owner of the contract to withdraw tokens
    /// @dev A safety measure in case something goes wrong with the distribution
    function withdraw(uint256 amount) external onlyOwner {
        require(token.transfer(msg.sender, amount), "TokenDistributor: fail transfer token");
        emit Withdrawal(msg.sender, amount);
    }

    /// @notice Allows owner to set a list of recipients to receive tokens
    /// @dev This may need to be called many times to set the full list of recipients
    function setRecipients(address[] calldata _recipients, uint256[] calldata _claimableAmount)
        external
        onlyOwner
    {
        require(
            _recipients.length == _claimableAmount.length, "TokenDistributor: invalid array length"
        );
        uint256 sum = totalClaimable;
        for (uint256 i = 0; i < _recipients.length; i++) {
            // sanity check that the address being set is consistent
            require(claimableTokens[_recipients[i]] == 0, "TokenDistributor: recipient already set");
            claimableTokens[_recipients[i]] = _claimableAmount[i];
            emit CanClaim(_recipients[i], _claimableAmount[i]);
            unchecked {
                sum += _claimableAmount[i];
            }
        }

        // sanity check that the current has been sufficiently allocated
        require(token.balanceOf(address(this)) >= sum, "TokenDistributor: not enough balance");
        totalClaimable = sum;
    }

    /// @notice Claim and delegate in a single call
    /// @dev Different implementations may handle validation/fail delegateBySig differently. here a OZ v4.6.0 impl is assumed
    /// @dev delegateBySig by OZ does not support `IERC1271`, so smart contract wallets should not use this method
    /// @dev delegateBySig is used so that the token contract doesn't need to contain any claiming functionality
    function claimAndDelegate(address delegatee, uint256 expiry, uint8 v, bytes32 r, bytes32 s)
        external
    {
        claim();
        // WARNING: there's a nuisance attack that can occur here on networks that allow front running
        // A malicious party could see the signature when it's broadcast to a public mempool and create a
        // new transaction to front run by calling delegateBySig on the token with the sig. The result would
        // be that the tx to claimAndDelegate would fail. This is only a nuisance as the user can just call the
        // claim function below to claim their funds, however it would be an annoying UX and they would have paid
        // for a failed transaction. If using this function on a network that allows front running consider
        // modifying it to put the delegateBySig in a try/catch and rethrow for all errors that aren't "nonce invalid"
        token.delegateBySig(delegatee, 0, expiry, v, r, s);
        // ensure that delegation did take place, this is just a sanity check that ensures the signature
        // matched to the sender who was claiming. It helps to detect errors in forming signatures
        require(token.delegates(msg.sender) == delegatee, "TokenDistributor: delegate failed");
    }

    /// @notice Sends any unclaimed funds to the sweep reciever once the claiming period is over
    function sweep() external {
        require(block.number >= claimPeriodEnd, "TokenDistributor: not ended");
        uint256 leftovers = token.balanceOf(address(this));
        require(leftovers != 0, "TokenDistributor: no leftovers");

        require(token.transfer(sweepReceiver, leftovers), "TokenDistributor: fail token transfer");

        emit Swept(leftovers);

        // contract is destroyed to clean up storage
        selfdestruct(payable(sweepReceiver));
    }

    /// @notice Allows a recipient to claim their tokens
    /// @dev Can only be called during the claim period
    function claim() public {
        require(block.number >= claimPeriodStart, "TokenDistributor: claim not started");
        require(block.number < claimPeriodEnd, "TokenDistributor: claim ended");

        uint256 amount = claimableTokens[msg.sender];
        require(amount > 0, "TokenDistributor: nothing to claim");

        claimableTokens[msg.sender] = 0;

        // we don't use safeTransfer since impl is assumed to be OZ
        require(token.transfer(msg.sender, amount), "TokenDistributor: fail token transfer");
        emit HasClaimed(msg.sender, amount);
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.16;

import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
import
    "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/draft-IERC20PermitUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/governance/utils/IVotesUpgradeable.sol";

/// @notice increments an integer without checking for overflows
/// @dev from https://github.com/ethereum/solidity/issues/11721#issuecomment-890917517
function uncheckedInc(uint256 x) pure returns (uint256) {
    unchecked {
        return x + 1;
    }
}

/// @title A token contract with governance capabilities
interface IERC20VotesUpgradeable is
    IVotesUpgradeable,
    IERC20Upgradeable,
    IERC20PermitUpgradeable
{}

{
  "remappings": [
    "@arbitrum/nitro-contracts/=node_modules/@arbitrum/nitro-contracts/",
    "@arbitrum/token-bridge-contracts/=node_modules/@arbitrum/token-bridge-contracts/",
    "@openzeppelin/contracts-upgradeable/=node_modules/@openzeppelin/contracts-upgradeable/",
    "@openzeppelin/contracts/=node_modules/@openzeppelin/contracts/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 20000
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

[{"inputs":[{"internalType":"contract IERC20VotesUpgradeable","name":"_token","type":"address"},{"internalType":"address payable","name":"_sweepReceiver","type":"address"},{"internalType":"address","name":"_owner","type":"address"},{"internalType":"uint256","name":"_claimPeriodStart","type":"uint256"},{"internalType":"uint256","name":"_claimPeriodEnd","type":"uint256"},{"internalType":"address","name":"delegateTo","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"CanClaim","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"HasClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newSweepReceiver","type":"address"}],"name":"SweepReceiverSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Swept","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdrawal","type":"event"},{"inputs":[],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"delegatee","type":"address"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"claimAndDelegate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimPeriodEnd","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claimPeriodStart","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"claimableTokens","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_recipients","type":"address[]"},{"internalType":"uint256[]","name":"_claimableAmount","type":"uint256[]"}],"name":"setRecipients","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"_sweepReceiver","type":"address"}],"name":"setSweepReciever","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"sweep","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"sweepReceiver","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract IERC20VotesUpgradeable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalClaimable","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000912ce59144191c1204e64559fe8253a0e49e6548000000000000000000000000bfc1feca8b09a5c5d3effe7429ebe24b9c09ef580000000000000000000000002b9acfd85440b7828db8e54694ee07b2b056b30c000000000000000000000000000000000000000000000000000000000101ba20000000000000000000000000000000000000000000000000000000000115d50000000000000000000000000000000000000000000000000000000000000a4b86

-----Decoded View---------------
Arg [0] : _token (address): 0x912ce59144191c1204e64559fe8253a0e49e6548
Arg [1] : _sweepReceiver (address): 0xbfc1feca8b09a5c5d3effe7429ebe24b9c09ef58
Arg [2] : _owner (address): 0x2b9acfd85440b7828db8e54694ee07b2b056b30c
Arg [3] : _claimPeriodStart (uint256): 16890400
Arg [4] : _claimPeriodEnd (uint256): 18208000
Arg [5] : delegateTo (address): 0x00000000000000000000000000000000000a4b86

-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 000000000000000000000000912ce59144191c1204e64559fe8253a0e49e6548
Arg [1] : 000000000000000000000000bfc1feca8b09a5c5d3effe7429ebe24b9c09ef58
Arg [2] : 0000000000000000000000002b9acfd85440b7828db8e54694ee07b2b056b30c
Arg [3] : 000000000000000000000000000000000000000000000000000000000101ba20
Arg [4] : 000000000000000000000000000000000000000000000000000000000115d500
Arg [5] : 00000000000000000000000000000000000000000000000000000000000a4b86