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// SPDX-License-Identifier: GPL-3.0

pragma solidity 0.6.12;

import "./interfaces/IERC20.sol";
import "./libraries/SafeMath.sol";

// Lightweight token modelled after UNI-LP: 
// https://github.com/Uniswap/uniswap-v2-core/blob/v1.0.1/contracts/UniswapV2ERC20.sol
// Adds:
//   - An exposed `burn()`
//   - ERC-3009 (`transferWithAuthorization()`)
//   - domainSeparator is computed inside `_validateSignedData` to avoid reply-attacks due to Hardforks
//   - to != address(this) && to != address(0); To avoid people sending tokens to this smartcontract and 
//          to distinguish burn events from transfer

contract HEZ is IERC20 {
    using SafeMath for uint256;

    uint8 public constant decimals = 18;    
    string public constant symbol = "HEZ";
    string public constant name = "Hermez Network Token";
    uint256 public constant initialBalance = 100_000_000 * (1e18);

    // bytes32 public constant PERMIT_TYPEHASH = 
    //      keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
    // bytes32 public constant TRANSFER_WITH_AUTHORIZATION_TYPEHASH =
    //      keccak256("TransferWithAuthorization(address from,address to,uint256 value,uint256 validAfter,uint256 validBefore,bytes32 nonce)");
    bytes32 public constant TRANSFER_WITH_AUTHORIZATION_TYPEHASH = 0x7c7c6cdb67a18743f49ec6fa9b35f50d52ed05cbed4cc592e13b44501c1a2267;
    // bytes32 public constant EIP712DOMAIN_HASH =
    //      keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)")
    bytes32 public constant EIP712DOMAIN_HASH = 0x8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f;
    // bytes32 public constant NAME_HASH =
    //      keccak256("Hermez Network Token")
    bytes32 public constant NAME_HASH = 0x64c0a41a0260272b78f2a5bd50d5ff7c1779bc3bba16dcff4550c7c642b0e4b4;
    // bytes32 public constant VERSION_HASH =
    //      keccak256("1")
    bytes32 public constant VERSION_HASH = 0xc89efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bc6;

    uint256 public override totalSupply;
    mapping(address => uint256) public override balanceOf;
    mapping(address => mapping(address => uint256)) public override allowance;
    mapping(address => uint256) public nonces;
    mapping(address => mapping(bytes32 => bool)) public authorizationState;

    event Approval(address indexed owner, address indexed spender, uint256 value);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event AuthorizationUsed(address indexed authorizer, bytes32 indexed nonce);

    constructor(address initialHolder) public {
        _mint(initialHolder, initialBalance);
    }

    function _validateSignedData(
        address signer,
        bytes32 encodeData,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal view {
        bytes32 domainSeparator = keccak256(
            abi.encode(
                EIP712DOMAIN_HASH,
                NAME_HASH,
                VERSION_HASH,
                getChainId(),
                address(this)
            )
        );

        bytes32 digest = keccak256(
            abi.encodePacked("\x19\x01", domainSeparator, encodeData)
        );
        address recoveredAddress = ecrecover(digest, v, r, s);
        // Explicitly disallow authorizations for address(0) as ecrecover returns address(0) on malformed messages
        require(
            recoveredAddress != address(0) && recoveredAddress == signer,
            "HEZ::_validateSignedData: INVALID_SIGNATURE"
        );
    }

    function getChainId() public pure returns (uint256 chainId){
        assembly { chainId := chainid() }
    }

    function _mint(address to, uint256 value) internal {
        totalSupply = totalSupply.add(value);
        balanceOf[to] = balanceOf[to].add(value);
        emit Transfer(address(0), to, value);
    }

    function _burn(address from, uint value) internal {
        // Balance is implicitly checked with SafeMath's underflow protection
        balanceOf[from] = balanceOf[from].sub(value);
        totalSupply = totalSupply.sub(value);
        emit Transfer(from, address(0), value);
    }

    function _approve(
        address owner,
        address spender,
        uint256 value
    ) private {
        allowance[owner][spender] = value;
        emit Approval(owner, spender, value);
    }

    function _transfer(
        address from,
        address to,
        uint256 value
    ) private {
        require(
            to != address(this) && to != address(0),
            "HEZ::_transfer: NOT_VALID_TRANSFER"
        );
        // Balance is implicitly checked with SafeMath's underflow protection
        balanceOf[from] = balanceOf[from].sub(value);
        balanceOf[to] = balanceOf[to].add(value);
        emit Transfer(from, to, value);
    }

    function burn(uint256 value) external returns (bool) {
        _burn(msg.sender, value);
        return true;
    }

    function approve(address spender, uint256 value)
        external
        override
        returns (bool)
    {
        _approve(msg.sender, spender, value);
        return true;
    }

    function transfer(address to, uint256 value)
        external
        override
        returns (bool)
    {
        _transfer(msg.sender, to, value);
        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external override returns (bool) {
        uint256 fromAllowance = allowance[from][msg.sender];
        if (fromAllowance != uint256(-1)) {
            // Allowance is implicitly checked with SafeMath's underflow protection
            allowance[from][msg.sender] = fromAllowance.sub(value);
        }
        _transfer(from, to, value);
        return true;
    }

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external {
        require(deadline >= block.timestamp, "HEZ::permit: AUTH_EXPIRED");
        bytes32 encodeData = keccak256(
            abi.encode(
                PERMIT_TYPEHASH,
                owner,
                spender,
                value,
                nonces[owner]++,
                deadline
            )
        );
        _validateSignedData(owner, encodeData, v, r, s);
        _approve(owner, spender, value);
    }

    function transferWithAuthorization(
        address from,
        address to,
        uint256 value,
        uint256 validAfter,
        uint256 validBefore,
        bytes32 nonce,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external {
        require(block.timestamp > validAfter, "HEZ::transferWithAuthorization: AUTH_NOT_YET_VALID");
        require(block.timestamp < validBefore, "HEZ::transferWithAuthorization: AUTH_EXPIRED");
        require(!authorizationState[from][nonce], "HEZ::transferWithAuthorization: AUTH_ALREADY_USED");

        bytes32 encodeData = keccak256(
            abi.encode(
                TRANSFER_WITH_AUTHORIZATION_TYPEHASH,
                from,
                to,
                value,
                validAfter,
                validBefore,
                nonce
            )
        );
        _validateSignedData(from, encodeData, v, r, s);

        authorizationState[from][nonce] = true;
        _transfer(from, to, value);
        emit AuthorizationUsed(from, nonce);
    }
}

// SPDX-License-Identifier: GPL-3.0

import "@openzeppelin/contracts/math/SafeMath.sol";

pragma solidity 0.6.12;
interface HermezVesting {
    function move(address recipient, uint256 amount) external;
    function changeAddress(address newAddress) external;
} 
interface HEZ {
    function approve(address spender, uint256 amount) external returns (bool);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
}

contract BootstrapDistribution {
    using SafeMath for uint256;

    HEZ public constant TOKEN_ADDRESS = HEZ(0xEEF9f339514298C6A857EfCfC1A762aF84438dEE);
    HermezVesting public constant VESTING_0 = HermezVesting(0x8109dfB06D4d9e694a8349B855cBF493A0B22186);
    HermezVesting public constant VESTING_1 = HermezVesting(0xDd90cA911a5dbfB1624fF7Eb586901a9b4BFC53D);
    HermezVesting public constant VESTING_2 = HermezVesting(0xB213aeAeF76f82e42263fe896433A260EF018df2);
    HermezVesting public constant VESTING_3 = HermezVesting(0x3049399e1308db7d2b28488880C6cFE9Aa003275);
    address public constant MULTISIG_VESTING_2  = 0xC21BE548060cB6E07017bFc0b926A71b5E638e09;
    address public constant MULTISIG_VESTING_3  = 0x5Fa543E23a1B62e45d010f81AFC0602456BD1F1d;
    address public constant VESTING_0_ADDRESS_0 = 0x94E886bB17451A7B82E594db12570a5AdFC2D453;
    address public constant VESTING_0_ADDRESS_1 = 0x4FE10B3e306aC1F4b966Db07f031ae5780BC48fB;
    address public constant VESTING_0_ADDRESS_2 = 0x6629300128CCdda1e88641Ba2941a22Ce82F5df9;
    address public constant VESTING_0_ADDRESS_3 = 0xEb60e28Ce3aCa617d1E0293791c1903cF022b9Cd;
    address public constant VESTING_0_ADDRESS_4 = 0x9a415E0cE643abc4AD953B651b2D7e4db2FF3bEa;
    address public constant VESTING_0_ADDRESS_5 = 0x15b54c53093aF3e11d787db86e268a6C4F2F72A2;
    address public constant VESTING_0_ADDRESS_6 = 0x3279c71F132833190F6cd1D6a9975FFBf8d7C6dC;
    address public constant VESTING_0_ADDRESS_7 = 0x312e6f33155177774CDa1A3C4e9f077D93266063;
    address public constant VESTING_0_ADDRESS_8 = 0x47690A724Ed551fe2ff1A5eBa335B7c1B7a40990;
    address public constant VESTING_1_ADDRESS_0 = 0x80FbB6dd386FC98D2B387F37845A373c8441c069;
    address public constant VESTING_2_ADDRESS_0 = 0xBd48F607E26d94772FB21ED1d814F9F116dBD95C;
    address public constant VESTING_3_ADDRESS_0 = 0x520Cf70a2D0B3dfB7386A2Bc9F800321F62a5c3a;
    address public constant NO_VESTED_ADDRESS_0 = 0x4D4a7675CC0eb0a3B1d81CbDcd828c4BD0D74155;
    address public constant NO_VESTED_ADDRESS_1 = 0x9CdaeBd2bcEED9EB05a3B3cccd601A40CB0026be;
    address public constant NO_VESTED_ADDRESS_2 = 0x9315F815002d472A3E993ac9dc7461f2601A3c09;
    address public constant NO_VESTED_ADDRESS_3 = 0xF96A39d61F6972d8dC0CCd2A3c082eD922E096a7;
    address public constant NO_VESTED_ADDRESS_4 = 0xA93Bb239509D16827B7ee9DA7dA6Fc8478837247;
    address public constant NO_VESTED_ADDRESS_5 = 0x99Ae889E171B82BB04FD22E254024716932e5F2f;
    uint256 public constant VESTING_0_AMOUNT            = 20_000_000 ether;
    uint256 public constant VESTING_1_AMOUNT            = 10_000_000 ether;
    uint256 public constant VESTING_2_AMOUNT            =  6_200_000 ether;
    uint256 public constant VESTING_3_AMOUNT            = 17_500_000 ether;    
    uint256 public constant VESTING_0_ADDRESS_0_AMOUNT  = 12_000_000 ether;
    uint256 public constant VESTING_0_ADDRESS_1_AMOUNT  =  1_850_000 ether;
    uint256 public constant VESTING_0_ADDRESS_2_AMOUNT  =  1_675_000 ether;
    uint256 public constant VESTING_0_ADDRESS_3_AMOUNT  =  1_300_000 ether;
    uint256 public constant VESTING_0_ADDRESS_4_AMOUNT  =  1_000_000 ether;
    uint256 public constant VESTING_0_ADDRESS_5_AMOUNT  =    750_000 ether;
    uint256 public constant VESTING_0_ADDRESS_6_AMOUNT  =    625_000 ether;
    uint256 public constant VESTING_0_ADDRESS_7_AMOUNT  =    525_000 ether;
    uint256 public constant VESTING_0_ADDRESS_8_AMOUNT  =    275_000 ether;
    uint256 public constant VESTING_1_ADDRESS_0_AMOUNT  = 10_000_000 ether;
    uint256 public constant VESTING_2_ADDRESS_0_AMOUNT  =    500_000 ether;
    uint256 public constant VESTING_3_ADDRESS_0_AMOUNT  =    300_000 ether;
    uint256 public constant NO_VESTED_ADDRESS_0_AMOUNT  = 19_000_000 ether;
    uint256 public constant NO_VESTED_ADDRESS_1_AMOUNT  =  9_000_000 ether;
    uint256 public constant NO_VESTED_ADDRESS_2_AMOUNT  =  7_500_000 ether;
    uint256 public constant NO_VESTED_ADDRESS_3_AMOUNT  =  5_000_000 ether;
    uint256 public constant NO_VESTED_ADDRESS_4_AMOUNT  =  3_000_000 ether;
    uint256 public constant NO_VESTED_ADDRESS_5_AMOUNT  =  2_800_000 ether;
    uint256 public constant INTERMEDIATE_BALANCE        = 46_300_000 ether;

    function distribute() public {
        require(
            TOKEN_ADDRESS.balanceOf(address(this)) == (100_000_000 ether), 
            "BootstrapDistribution::distribute NOT_ENOUGH_BALANCE"
        );

        // Vested Tokens
        // Transfer HEZ tokens
        TOKEN_ADDRESS.transfer(address(VESTING_0),VESTING_0_AMOUNT);
        TOKEN_ADDRESS.transfer(address(VESTING_1),VESTING_1_AMOUNT);
        TOKEN_ADDRESS.transfer(address(VESTING_2),VESTING_2_AMOUNT);
        TOKEN_ADDRESS.transfer(address(VESTING_3),VESTING_3_AMOUNT);
        // Transfer vested tokens
        transferVestedTokens0();
        transferVestedTokens1();
        transferVestedTokens2();
        transferVestedTokens3();

        // Check intermediate balance
        require(
            TOKEN_ADDRESS.balanceOf(address(this)) == INTERMEDIATE_BALANCE,
            "BootstrapDistribution::distribute NOT_ENOUGH_NO_VESTED_BALANCE"
        );

        // No Vested Tokens
        TOKEN_ADDRESS.transfer(NO_VESTED_ADDRESS_0, NO_VESTED_ADDRESS_0_AMOUNT);
        TOKEN_ADDRESS.transfer(NO_VESTED_ADDRESS_1, NO_VESTED_ADDRESS_1_AMOUNT);
        TOKEN_ADDRESS.transfer(NO_VESTED_ADDRESS_2, NO_VESTED_ADDRESS_2_AMOUNT);
        TOKEN_ADDRESS.transfer(NO_VESTED_ADDRESS_3, NO_VESTED_ADDRESS_3_AMOUNT);
        TOKEN_ADDRESS.transfer(NO_VESTED_ADDRESS_4, NO_VESTED_ADDRESS_4_AMOUNT);
        TOKEN_ADDRESS.transfer(NO_VESTED_ADDRESS_5, NO_VESTED_ADDRESS_5_AMOUNT);

        require(
            TOKEN_ADDRESS.balanceOf(address(this)) == 0, 
            "BootstrapDistribution::distribute PENDING_BALANCE"
        );
    }

    function transferVestedTokens0() internal {
        VESTING_0.move(VESTING_0_ADDRESS_0, VESTING_0_ADDRESS_0_AMOUNT);
        VESTING_0.move(VESTING_0_ADDRESS_1, VESTING_0_ADDRESS_1_AMOUNT);
        VESTING_0.move(VESTING_0_ADDRESS_2, VESTING_0_ADDRESS_2_AMOUNT);
        VESTING_0.move(VESTING_0_ADDRESS_3, VESTING_0_ADDRESS_3_AMOUNT);
        VESTING_0.move(VESTING_0_ADDRESS_4, VESTING_0_ADDRESS_4_AMOUNT);
        VESTING_0.move(VESTING_0_ADDRESS_5, VESTING_0_ADDRESS_5_AMOUNT);
        VESTING_0.move(VESTING_0_ADDRESS_6, VESTING_0_ADDRESS_6_AMOUNT);
        VESTING_0.move(VESTING_0_ADDRESS_7, VESTING_0_ADDRESS_7_AMOUNT);
        VESTING_0.move(VESTING_0_ADDRESS_8, VESTING_0_ADDRESS_8_AMOUNT);
        VESTING_0.changeAddress(address(0));
    }

    function transferVestedTokens1() internal {
        VESTING_1.move(VESTING_1_ADDRESS_0, VESTING_1_ADDRESS_0_AMOUNT);
        VESTING_1.changeAddress(address(0));
    }

    function transferVestedTokens2() internal {
        VESTING_2.move(VESTING_2_ADDRESS_0, VESTING_2_ADDRESS_0_AMOUNT);
        VESTING_2.changeAddress(MULTISIG_VESTING_2);    
    }

    function transferVestedTokens3() internal {
        VESTING_3.move(VESTING_3_ADDRESS_0, VESTING_3_ADDRESS_0_AMOUNT);
        VESTING_3.changeAddress(MULTISIG_VESTING_3);  
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: GPL-3.0

pragma solidity 0.6.12;

import "@openzeppelin/contracts/math/SafeMath.sol";
import "./interfaces/IERC20.sol";

contract HermezVesting {
    using SafeMath for uint256;

    address public distributor;

    mapping(address => uint256) public vestedTokens;
    mapping(address => uint256) public withdrawed;
    uint256 public totalVestedTokens;

    uint256 public startTime;
    uint256 public cliffTime;
    uint256 public endTime;
    uint256 public initialPercentage;

    address public constant HEZ = address(
        0xEEF9f339514298C6A857EfCfC1A762aF84438dEE
    );

    event Withdraw(address indexed recipient, uint256 amount);
    event Move(address indexed from, address indexed to, uint256 value);
    event ChangeAddress(address indexed oldAddress, address indexed newAddress);

    constructor(
        address _distributor,
        uint256 _totalVestedTokens,
        uint256 _startTime,
        uint256 _startToCliff,
        uint256 _startToEnd,
        uint256 _initialPercentage
    ) public {
        require(
            _startToEnd >= _startToCliff,
            "HermezVesting::constructor: START_GREATER_THAN_CLIFF"
        );
        require(
            _initialPercentage <= 100,
            "HermezVesting::constructor: INITIALPERCENTAGE_GREATER_THAN_100"
        );
        distributor = _distributor;
        totalVestedTokens = _totalVestedTokens;
        vestedTokens[_distributor] = _totalVestedTokens;
        startTime = _startTime;
        cliffTime = _startTime + _startToCliff;
        endTime = _startTime + _startToEnd;
        initialPercentage = _initialPercentage;
    }

    function totalTokensUnlockedAt(uint256 timestamp)
        public
        view
        returns (uint256)
    {
        if (timestamp < startTime) return 0;
        if (timestamp > endTime) return totalVestedTokens;

        uint256 initialAmount = totalVestedTokens.mul(initialPercentage).div(
            100
        );
        if (timestamp < cliffTime) return initialAmount;

        uint256 deltaT = timestamp.sub(startTime);
        uint256 deltaTTotal = endTime.sub(startTime);
        uint256 deltaAmountTotal = totalVestedTokens.sub(initialAmount);
        return initialAmount.add(deltaT.mul(deltaAmountTotal).div(deltaTTotal));
    }

    function withdrawableTokens(address recipient)
        public
        view
        returns (uint256)
    {
        return withdrawableTokensAt(recipient, block.timestamp);
    }

    function withdrawableTokensAt(address recipient, uint256 timestamp)
        public
        view
        returns (uint256)
    {
        uint256 unlockedAmount = totalTokensUnlockedAt(timestamp)
            .mul(vestedTokens[recipient])
            .div(totalVestedTokens);
        return unlockedAmount.sub(withdrawed[recipient]);
    }

    function withdraw() external {
        require(
            msg.sender != distributor,
            "HermezVesting::withdraw: DISTRIBUTOR_CANNOT_WITHDRAW"
        );

        uint256 remainingToWithdraw = withdrawableTokensAt(
            msg.sender,
            block.timestamp
        );

        withdrawed[msg.sender] = withdrawed[msg.sender].add(
            remainingToWithdraw
        );

        require(
            IERC20(HEZ).transfer(msg.sender, remainingToWithdraw),
            "HermezVesting::withdraw: TOKEN_TRANSFER_ERROR"
        );

        emit Withdraw(msg.sender, remainingToWithdraw);
    }

    function move(address recipient, uint256 amount) external {
        require(
            msg.sender == distributor,
            "HermezVesting::changeAddress: ONLY_DISTRIBUTOR"
        );
        vestedTokens[msg.sender] = vestedTokens[msg.sender].sub(amount);
        vestedTokens[recipient] = vestedTokens[recipient].add(amount);
        emit Move(msg.sender, recipient, amount);
    }

    function changeAddress(address newAddress) external {
        require(
            vestedTokens[newAddress] == 0,
            "HermezVesting::changeAddress: ADDRESS_HAS_BALANCE"
        );
        require(
            withdrawed[newAddress] == 0,
            "HermezVesting::changeAddress: ADDRESS_ALREADY_WITHDRAWED"
        );

        vestedTokens[newAddress] = vestedTokens[msg.sender];
        vestedTokens[msg.sender] = 0;
        withdrawed[newAddress] = withdrawed[msg.sender];
        withdrawed[msg.sender] = 0;

        if (msg.sender == distributor) {
            distributor = newAddress;
        }

        emit ChangeAddress(msg.sender, newAddress);
    }
}

// SPDX-License-Identifier: GPL-3.0

pragma solidity 0.6.12;

interface IERC20 {
    function totalSupply() external view returns (uint256);

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

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 amount) external returns (bool);

    function transfer(address recipient, uint256 amount)
        external
        returns (bool);

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);
}

// SPDX-License-Identifier: GPL-3.0

pragma solidity 0.6.12;

// A library for performing overflow-safe math, courtesy of DappHub: https://github.com/dapphub/ds-math/blob/d0ef6d6a5f/src/math.sol
// Modified to include only the essentials
library SafeMath {
    string private constant ERROR_ADD_OVERFLOW = "MATH:ADD_OVERFLOW";
    string private constant ERROR_SUB_UNDERFLOW = "MATH:SUB_UNDERFLOW";

    function add(uint256 x, uint256 y) internal pure returns (uint256 z) {
        require((z = x + y) >= x, ERROR_ADD_OVERFLOW);
    }

    function sub(uint256 x, uint256 y) internal pure returns (uint256 z) {
        require((z = x - y) <= x, ERROR_SUB_UNDERFLOW);
    }
}

// SPDX-License-Identifier: GPL-3.0

pragma solidity 0.6.12;

import "../HEZToken.sol";

contract HEZMock is HEZ {
    constructor(address initialHolder)
        public
        HEZ(initialHolder)
    {}

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

// SPDX-License-Identifier: GPL-3.0

pragma solidity 0.6.12;

import "@openzeppelin/contracts/math/Math.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import "@openzeppelin/contracts/token/ERC777/IERC777Recipient.sol";
import "@openzeppelin/contracts/introspection/IERC1820Registry.sol";

contract LPTokenWrapper {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    // Uniswap v2 HEZ/ETH pair token
    IERC20 public UNI = IERC20(0x4a9EFa254085F36122d4b8BD2111544F8dC77052);

    uint256 private _totalSupply;
    mapping(address => uint256) private _balances;

    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view returns (uint256) {
        return _balances[account];
    }

    function stake(uint256 amount) public virtual {
        _totalSupply = _totalSupply.add(amount);
        _balances[msg.sender] = _balances[msg.sender].add(amount);
        UNI.safeTransferFrom(msg.sender, address(this), amount);
    }

    function withdraw(uint256 amount) public virtual {
        _totalSupply = _totalSupply.sub(amount);
        _balances[msg.sender] = _balances[msg.sender].sub(amount);
        UNI.safeTransfer(msg.sender, amount);
    }
}

contract Unipool is LPTokenWrapper, IERC777Recipient {
    uint256 public constant DURATION = 30 days;
    // Hermez Network Token
    IERC20 public HEZ = IERC20(0xcAEf929782361ccE9618c014D2867E423fE84ae7);

    IERC1820Registry private constant _ERC1820_REGISTRY = IERC1820Registry(
        0x1820a4B7618BdE71Dce8cdc73aAB6C95905faD24
    );
    bytes32 private constant _ERC777_RECIPIENT_INTERFACE_HASH = keccak256(
        "ERC777TokensRecipient"
    );

    uint256 public periodFinish;
    uint256 public rewardRate;
    uint256 public lastUpdateTime;
    uint256 public rewardPerTokenStored;
    mapping(address => uint256) public userRewardPerTokenPaid;
    mapping(address => uint256) public rewards;

    event RewardAdded(uint256 reward);
    event Staked(address indexed user, uint256 amount);
    event Withdrawn(address indexed user, uint256 amount);
    event RewardPaid(address indexed user, uint256 reward);

    modifier updateReward(address account) {
        rewardPerTokenStored = rewardPerToken();
        lastUpdateTime = lastTimeRewardApplicable();
        if (account != address(0)) {
            rewards[account] = earned(account);
            userRewardPerTokenPaid[account] = rewardPerTokenStored;
        }
        _;
    }

    constructor() public {
        _ERC1820_REGISTRY.setInterfaceImplementer(
            address(this),
            _ERC777_RECIPIENT_INTERFACE_HASH,
            address(this)
        );
    }

    function lastTimeRewardApplicable() public view returns (uint256) {
        return Math.min(block.timestamp, periodFinish);
    }

    function rewardPerToken() public view returns (uint256) {
        if (totalSupply() == 0) {
            return rewardPerTokenStored;
        }
        require(
            lastTimeRewardApplicable() >= lastUpdateTime,
            "lastTimeRewardApplicable < lastUpdateTime"
        );
        return
            rewardPerTokenStored.add(
                lastTimeRewardApplicable()
                    .sub(lastUpdateTime)
                    .mul(rewardRate)
                    .mul(1e18)
                    .div(totalSupply())
            );
    }

    function earned(address account) public view returns (uint256) {
        require(
            rewardPerToken() >= userRewardPerTokenPaid[account],
            "rewardPerToken() < userRewardPerTokenPaid[account] "
        );
        return
            balanceOf(account)
                .mul(rewardPerToken().sub(userRewardPerTokenPaid[account]))
                .div(1e18)
                .add(rewards[account]);
    }

    // stake visibility is public as overriding LPTokenWrapper's stake() function
    function stake(uint256 amount) public override updateReward(msg.sender) {
        require(amount > 0, "Cannot stake 0");
        super.stake(amount);
        emit Staked(msg.sender, amount);
    }

    function withdraw(uint256 amount) public override updateReward(msg.sender) {
        require(amount > 0, "Cannot withdraw 0");
        super.withdraw(amount);
        emit Withdrawn(msg.sender, amount);
    }

    function exit() external {
        withdraw(balanceOf(msg.sender));
        getReward();
    }

    function getReward() public updateReward(msg.sender) {
        uint256 reward = earned(msg.sender);
        if (reward > 0) {
            rewards[msg.sender] = 0;
            HEZ.safeTransfer(msg.sender, reward);
            emit RewardPaid(msg.sender, reward);
        }
    }

    function tokensReceived(
        // solhint-disable no-unused-vars
        address _operator,
        address _from,
        address _to,
        uint256 _amount,
        bytes calldata _userData,
        bytes calldata _operatorData
    ) external override updateReward(address(0)) {
        require(_amount > 0, "Cannot approve 0");
        require(msg.sender == address(HEZ), "Wrong token");
        require(
            _from == 0xF35960302a07022aBa880DFFaEC2Fdd64d5BF1c1,
            "Not allowed"
        );

        if (block.timestamp >= periodFinish) {
            rewardRate = _amount.div(DURATION);
        } else {
            uint256 remaining = periodFinish.sub(block.timestamp);
            uint256 leftover = remaining.mul(rewardRate);
            rewardRate = _amount.add(leftover).div(DURATION);
        }
        lastUpdateTime = block.timestamp;
        periodFinish = block.timestamp.add(DURATION);

        emit RewardAdded(_amount);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow, so we distribute
        return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

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

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

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.2;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    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;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Interface of the ERC777TokensRecipient standard as defined in the EIP.
 *
 * Accounts can be notified of {IERC777} tokens being sent to them by having a
 * contract implement this interface (contract holders can be their own
 * implementer) and registering it on the
 * https://eips.ethereum.org/EIPS/eip-1820[ERC1820 global registry].
 *
 * See {IERC1820Registry} and {ERC1820Implementer}.
 */
interface IERC777Recipient {
    /**
     * @dev Called by an {IERC777} token contract whenever tokens are being
     * moved or created into a registered account (`to`). The type of operation
     * is conveyed by `from` being the zero address or not.
     *
     * This call occurs _after_ the token contract's state is updated, so
     * {IERC777-balanceOf}, etc., can be used to query the post-operation state.
     *
     * This function may revert to prevent the operation from being executed.
     */
    function tokensReceived(
        address operator,
        address from,
        address to,
        uint256 amount,
        bytes calldata userData,
        bytes calldata operatorData
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Interface of the global ERC1820 Registry, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1820[EIP]. Accounts may register
 * implementers for interfaces in this registry, as well as query support.
 *
 * Implementers may be shared by multiple accounts, and can also implement more
 * than a single interface for each account. Contracts can implement interfaces
 * for themselves, but externally-owned accounts (EOA) must delegate this to a
 * contract.
 *
 * {IERC165} interfaces can also be queried via the registry.
 *
 * For an in-depth explanation and source code analysis, see the EIP text.
 */
interface IERC1820Registry {
    /**
     * @dev Sets `newManager` as the manager for `account`. A manager of an
     * account is able to set interface implementers for it.
     *
     * By default, each account is its own manager. Passing a value of `0x0` in
     * `newManager` will reset the manager to this initial state.
     *
     * Emits a {ManagerChanged} event.
     *
     * Requirements:
     *
     * - the caller must be the current manager for `account`.
     */
    function setManager(address account, address newManager) external;

    /**
     * @dev Returns the manager for `account`.
     *
     * See {setManager}.
     */
    function getManager(address account) external view returns (address);

    /**
     * @dev Sets the `implementer` contract as ``account``'s implementer for
     * `interfaceHash`.
     *
     * `account` being the zero address is an alias for the caller's address.
     * The zero address can also be used in `implementer` to remove an old one.
     *
     * See {interfaceHash} to learn how these are created.
     *
     * Emits an {InterfaceImplementerSet} event.
     *
     * Requirements:
     *
     * - the caller must be the current manager for `account`.
     * - `interfaceHash` must not be an {IERC165} interface id (i.e. it must not
     * end in 28 zeroes).
     * - `implementer` must implement {IERC1820Implementer} and return true when
     * queried for support, unless `implementer` is the caller. See
     * {IERC1820Implementer-canImplementInterfaceForAddress}.
     */
    function setInterfaceImplementer(address account, bytes32 interfaceHash, address implementer) external;

    /**
     * @dev Returns the implementer of `interfaceHash` for `account`. If no such
     * implementer is registered, returns the zero address.
     *
     * If `interfaceHash` is an {IERC165} interface id (i.e. it ends with 28
     * zeroes), `account` will be queried for support of it.
     *
     * `account` being the zero address is an alias for the caller's address.
     */
    function getInterfaceImplementer(address account, bytes32 interfaceHash) external view returns (address);

    /**
     * @dev Returns the interface hash for an `interfaceName`, as defined in the
     * corresponding
     * https://eips.ethereum.org/EIPS/eip-1820#interface-name[section of the EIP].
     */
    function interfaceHash(string calldata interfaceName) external pure returns (bytes32);

    /**
     *  @notice Updates the cache with whether the contract implements an ERC165 interface or not.
     *  @param account Address of the contract for which to update the cache.
     *  @param interfaceId ERC165 interface for which to update the cache.
     */
    function updateERC165Cache(address account, bytes4 interfaceId) external;

    /**
     *  @notice Checks whether a contract implements an ERC165 interface or not.
     *  If the result is not cached a direct lookup on the contract address is performed.
     *  If the result is not cached or the cached value is out-of-date, the cache MUST be updated manually by calling
     *  {updateERC165Cache} with the contract address.
     *  @param account Address of the contract to check.
     *  @param interfaceId ERC165 interface to check.
     *  @return True if `account` implements `interfaceId`, false otherwise.
     */
    function implementsERC165Interface(address account, bytes4 interfaceId) external view returns (bool);

    /**
     *  @notice Checks whether a contract implements an ERC165 interface or not without using nor updating the cache.
     *  @param account Address of the contract to check.
     *  @param interfaceId ERC165 interface to check.
     *  @return True if `account` implements `interfaceId`, false otherwise.
     */
    function implementsERC165InterfaceNoCache(address account, bytes4 interfaceId) external view returns (bool);

    event InterfaceImplementerSet(address indexed account, bytes32 indexed interfaceHash, address indexed implementer);

    event ManagerChanged(address indexed account, address indexed newManager);
}

{
  "metadata": {
    "useLiteralContent": false
  },
  "optimizer": {
    "enabled": true,
    "runs": 999999
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  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"validAfter","type":"uint256"},{"internalType":"uint256","name":"validBefore","type":"uint256"},{"internalType":"bytes32","name":"nonce","type":"bytes32"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"transferWithAuthorization","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000002dbe7d4b7812c32a37c3332c71fab7fde575e065

-----Decoded View---------------
Arg [0] : initialHolder (address): 0x2dbE7d4b7812C32A37c3332c71fAB7Fde575E065

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000002dbe7d4b7812c32a37c3332c71fab7fde575e065

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