Contract 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366 10

Contract Overview

Balance:
0 AVAX

AVAX Value:
$0.00

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x829f085c6df66aedef01e7f6ccc6339b2e4923cb8648667bf3722a3fd79beba2Buy Private Offe...124882712022-03-23 20:52:2559 days 10 hrs ago0xb0162fbf7f341a1f6da29a6be1dd1faae0fa9b21 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.012493316708 88.792744298
0x5db4c8dedc0499c0f03223a5ad2c62d629a74cea6277d885b24de5ebe7efadc6Buy Private Offe...121945812022-03-16 19:43:0266 days 11 hrs ago0xeb5c55169f3578a9fe9ca464f25c74733ff040da IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.010839677767 67.582409146
0xf7db4a43a7d950c21d6413f49e7819345de2dbe0b7032ce61b62ff9aba7ff932Buy Private Offe...118308462022-03-08 3:55:4575 days 3 hrs ago0xdcf0b0d8e6fafcf17bd9611eee19d90ffdd93de1 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.003340522353 27.173520161
0x2bb7f6381866c72a8d0a39145d5543b2981e1e1310599fab4eb2ceb8cbdf6f00Buy Public Offer118272172022-03-08 1:50:4675 days 5 hrs ago0xcf8b43e49ceb1036511ad94766d40566f301f929 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.003371567265 27.701417831
0x0cf3d51c3fc1b5cc0f5a7b5339c9a4c0eeba26a2dd69f545d1044e6364b0c325Buy Public Offer118271662022-03-08 1:48:5975 days 5 hrs ago0xcf8b43e49ceb1036511ad94766d40566f301f929 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.002207978404 26.717065022
0xcb17924f3e41dfd7f6a6c2e28be00c45bffed14e94f68b28604e00c16bd2d274Buy Public Offer117963082022-03-07 8:20:2175 days 23 hrs ago0x5371379f4b3060de0935de601f894c65b9072037 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.0036781735 26.5
0xd33806770b20c0a3e3038884cc8b5641f497f8522e38df4aa9b885fb67f1e410Buy Public Offer117962392022-03-07 8:18:0575 days 23 hrs ago0x5371379f4b3060de0935de601f894c65b9072037 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.0026428715 26.5
0xfe8b246f333a117a06108320fd015ed48bb2eb1a2359960ff4391205f3ab359dBuy Public Offer117934322022-03-07 6:43:5976 days 43 mins ago0xcf8b43e49ceb1036511ad94766d40566f301f929 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.003664590825 27.361782003
0x8985e934bcd8afb791e99edb3efc5d20cc8d21ccba453067a2bcde43bd82dc85Buy Public Offer116658402022-03-04 7:44:0778 days 23 hrs ago0xcf8b43e49ceb1036511ad94766d40566f301f929 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.001517139482 31.109961289
0xb8fd3046b315bad143809a85fd8aa0d83d736b05ad3a43b0543cb87b44289045Buy Public Offer116629962022-03-04 6:08:2079 days 1 hr ago0xcf8b43e49ceb1036511ad94766d40566f301f929 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.0021900395 26.5
0xc8cfcc35d8313d7e1dd4b2e1b89a0b0e6a7fcde2e4461e63dc032ad1fab2c050Buy Public Offer116506492022-03-03 23:17:3979 days 8 hrs ago0xdcf0b0d8e6fafcf17bd9611eee19d90ffdd93de1 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.005365492246 53.793170912
0xe3818529d07e19355a1432a82c9d0ab52ca7c2517d50d66458db2574ff424878Buy Public Offer115820262022-03-02 8:51:4480 days 22 hrs ago0xcf8b43e49ceb1036511ad94766d40566f301f929 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.003662346566 36.717830491
0x1fe4e7f5715d9167a78100bed25589aa13eaae2e636a4dcfff08e323c13afb75Buy Public Offer114512872022-02-27 6:45:3584 days 41 mins ago0xcf8b43e49ceb1036511ad94766d40566f301f929 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.0026431895 26.5
0xca63de124f7d34de493bfc6ace9242764a3c07fa485f96cd6ce18abbe10dd51eBuy Public Offer113863722022-02-25 17:57:2585 days 13 hrs ago0x3d48ed97d995c1c1ef3d3b491b15ec3e4be7e25d IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.016855059254 168.984883694
0x4a7c93d77b7c7ce4d2dfd9805b2d30f1d504ba70517d4b81fcb9dc5e2e8a6907Buy Public Offer113858642022-02-25 17:39:1185 days 13 hrs ago0xcf8b43e49ceb1036511ad94766d40566f301f929 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.015579837127 188.51974308
0x67594748fed3b52d3def9263ce40666fc6215e45cbfb2831836e843b421dffe8Buy Public Offer113582752022-02-25 2:03:2086 days 5 hrs ago0xdcf0b0d8e6fafcf17bd9611eee19d90ffdd93de1 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.0021903575 26.5
0x63f61653d293e2400be5f5d620e35dde273d73d40fe8fcce0a9f14161ea32df6Buy Public Offer113578262022-02-25 1:48:1286 days 5 hrs ago0xdcf0b0d8e6fafcf17bd9611eee19d90ffdd93de1 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.0026435075 26.5
0x1901351b2a7986fb65ee528480050954acfe49c79be6d4205323383b576040c0Buy Public Offer113479582022-02-24 20:07:3286 days 11 hrs ago0xcf8b43e49ceb1036511ad94766d40566f301f929 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.021409136994 214.643002459
0xca1d783e749b7f9a19bb8d08eeeab14e8cd005d1ea7a079b3725e2bac46e890dBuy Public Offer113479472022-02-24 20:07:1186 days 11 hrs ago0xdcf0b0d8e6fafcf17bd9611eee19d90ffdd93de1 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.026193392924 195.556265907
0x5e18706c56b1160af253c3c701f06e8a4c7b063cab2bd00acfaa7a3351a3c460Buy Private Offe...113268632022-02-24 8:09:5386 days 23 hrs ago0x412d8b26380a3e10580dfb5db7bd36daf462e8cd IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.011298642927 71.904965393
0xfda5f2cabbd7363fab7260cf114646f475ba9f4efd7e2f17a56f888f40ee88d2Buy Public Offer108147162022-02-12 7:52:0598 days 23 hrs ago0x01324b96be2e160f758519eac179ddfb2db2099a IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.0032655155 26.5
0xf0c2be67bf43158cbb05d103855abc1fa637377d62f9be6df3f5485bf9dcbea4Buy Public Offer103545912022-02-01 18:55:04109 days 12 hrs ago0xe4095e9868281937ba23fd15d522d5c18d5cd25a IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.00259679111829.164648287
0x298cc5bd8f6e63c92a89c5e481f20926b6d1f3d170e078048e06471d47f7fb12Buy Public Offer103545912022-02-01 18:55:04109 days 12 hrs ago0xe4095e9868281937ba23fd15d522d5c18d5cd25a IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.00265347525
0x5fa45e24136a093165a52ddb82744978a8959f149ebb55cece00eb217aa99e57Buy Public Offer103471732022-02-01 14:53:51109 days 16 hrs ago0x3cd47ec83bc7a94da37884515c9463a3ecfca2c4 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.003508475 25
0xbd4f3de8ade1e76c54b18820dc40b96307eabf0ca62a4ee4ae56be4d0430028aBuy Public Offer103149352022-01-31 21:20:52110 days 10 hrs ago0x368354bd2f8039a6e1e79c9568e2c06e4362ea12 IN  0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e3660 AVAX0.009188742788 86.572728104
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0x8b93f4092f6f96ad8af4f8b0992f8c047d5722b8705fdbc334f0dc29e5e6ad86145751342022-05-12 0:00:2110 days 7 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0xb5033de73ab5f6e212b8ab5b6810b403fae488ce270b2b7b0e65a3d78d3bba2f142271202022-05-03 17:04:4918 days 14 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0xc1e897b4726317002c0ddfd7ce68af5cd2456d66156133c3f4e09c7c8c092b05131690392022-04-08 22:19:0943 days 9 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0x0324316bcb05e128440f9e9e90a8257d4b1527b1fbd4e11d7ad81fca091b092b131576242022-04-08 15:54:3743 days 15 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0x5397053b5d7837b83d2b52fc4cb29ab1030fe7301c61fd2ab18d6dd7943a2643124881112022-03-23 20:46:5459 days 10 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0x8ebf62e1807980dd3c3ddd7a7b26c53b3e297d49451ae97c4779c93345f3ad79121929042022-03-16 18:44:1866 days 12 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0x9595ba034f5198c360311f298e889513b7a0ffc8f0f234ce423c1cc072edd60f116157742022-03-03 3:46:2580 days 3 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0xacb811f26806414755cfb1a0e2c205cb7bbde1b94477585a23a19596beb2b8ac116058922022-03-02 22:16:3280 days 9 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0xc53eecbc950a1e201001aed6df0f503af172352f14f873bec659df0778877b94113476592022-02-24 19:57:0686 days 11 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0xcff8761b880ad038f3d074ff913c6c9a61d6a833f1fb4a171adffafb2e2d6d1a113262772022-02-24 7:50:0286 days 23 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0x8acf0250922a29c1d4c738ddedbe523e0c36c482bd970cf5fbd57fe8dcc78aec111744162022-02-20 17:37:3090 days 13 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0xbf52a72188f931f3c7ce436d3f8bee2043b9792fe441ef1feceeb252c57fc407103455112022-02-01 14:01:09109 days 17 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0x8bafd2c6fbef5e7fde46e5c33d6589858b2a91008618370fe971ceb99e745ef7101644192022-01-28 10:44:20113 days 20 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0xfda942f327dec9b633e99021f7f561856882e4704c00e9c197a29616fe88c90697480122022-01-18 20:37:08123 days 10 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0x559cea42d5bd2d4300348c9440ac7bcd0a0bb60b46c841ddf3a8a3a168d0b44a96517772022-01-16 15:21:57125 days 16 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
0x86ddbe1ae3b049fd2980cf930035fa701d321eacdf9065f04df355712df36a7c95245682022-01-13 18:16:21128 days 13 hrs ago 0xca49ecf7e7bb9bbc9d1d295384663f6ba5c0e366  Contract Creation0 AVAX
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Contract Source Code Verified (Exact Match)

Contract Name:
Shop

Compiler Version
v0.8.6+commit.11564f7e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 17 : Shop.sol
/*
██   ██ ██████   █████   ██████      ███████ ██   ██  ██████  ██████  
 ██ ██  ██   ██ ██   ██ ██    ██     ██      ██   ██ ██    ██ ██   ██ 
  ███   ██   ██ ███████ ██    ██     ███████ ███████ ██    ██ ██████  
 ██ ██  ██   ██ ██   ██ ██    ██          ██ ██   ██ ██    ██ ██      
██   ██ ██████  ██   ██  ██████      ███████ ██   ██  ██████  ██      
*/
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.6;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

import "./LP.sol";

import "../interfaces/IFactory.sol";
import "../interfaces/IDao.sol";
import "../interfaces/ILP.sol";

contract Shop is ReentrancyGuard {
    using SafeERC20 for IERC20;

    address public factory = address(0);

    mapping(address => bool) public lps;

    struct PublicOffer {
        bool isActive;
        address currency;
        uint256 rate; // lpAmount = currencyAmount / rate. For example: 1 LP = 100 USDT. 530 USDT -> 530/100 = 5.3 LP
    }

    mapping(address => PublicOffer) public publicOffers; // publicOffers[dao]

    struct PrivateOffer {
        bool isActive;
        address recipient;
        address currency;
        uint256 currencyAmount;
        uint256 lpAmount;
    }

    mapping(address => mapping(uint256 => PrivateOffer)) public privateOffers; // privateOffers[dao][offerId]
    mapping(address => uint256) public numberOfPrivateOffers;

    event LpCreated(address indexed lp);

    modifier onlyDaoWithLp() {
        require(
            IFactory(factory).containsDao(msg.sender) &&
                IDao(msg.sender).lp() != address(0),
            "Shop: this function is only for DAO with LP"
        );
        _;
    }

    function setFactory(address _factory) external returns (bool) {
        require(
            factory == address(0),
            "Shop: factory address has already been set"
        );

        factory = _factory;

        return true;
    }

    function createLp(string memory _lpName, string memory _lpSymbol)
        external
        nonReentrant
        returns (bool)
    {
        require(
            IFactory(factory).containsDao(msg.sender),
            "Shop: only DAO can deploy LP"
        );

        LP lp = new LP(_lpName, _lpSymbol, msg.sender);

        lps[address(lp)] = true;

        emit LpCreated(address(lp));

        bool b = IDao(msg.sender).setLp(address(lp));

        require(b, "Shop: LP setting error");

        return true;
    }

    // DAO can use this to create/enable/disable/changeCurrency/changeRate
    function initPublicOffer(
        bool _isActive,
        address _currency,
        uint256 _rate
    ) external onlyDaoWithLp returns (bool) {
        publicOffers[msg.sender] = PublicOffer({
            isActive: _isActive,
            currency: _currency,
            rate: _rate
        });

        return true;
    }

    function createPrivateOffer(
        address _recipient,
        address _currency,
        uint256 _currencyAmount,
        uint256 _lpAmount
    ) external onlyDaoWithLp returns (bool) {
        privateOffers[msg.sender][
            numberOfPrivateOffers[msg.sender]
        ] = PrivateOffer({
            isActive: true,
            recipient: _recipient,
            currency: _currency,
            currencyAmount: _currencyAmount,
            lpAmount: _lpAmount
        });

        numberOfPrivateOffers[msg.sender]++;

        return true;
    }

    function disablePrivateOffer(uint256 _id)
        external
        onlyDaoWithLp
        returns (bool)
    {
        privateOffers[msg.sender][_id].isActive = false;

        return true;
    }

    function buyPublicOffer(address _dao, uint256 _lpAmount)
        external
        nonReentrant
        returns (bool)
    {
        require(
            IFactory(factory).containsDao(_dao),
            "Shop: only DAO can sell LPs"
        );

        PublicOffer memory publicOffer = publicOffers[_dao];

        require(publicOffer.isActive, "Shop: this offer is disabled");

        IERC20(publicOffer.currency).safeTransferFrom(
            msg.sender,
            _dao,
            (_lpAmount * publicOffer.rate) / 1e18
        );

        address lp = IDao(_dao).lp();

        bool b = ILP(lp).mint(msg.sender, _lpAmount);

        require(b, "Shop: mint error");

        return true;
    }

    function buyPrivateOffer(address _dao, uint256 _id)
        external
        nonReentrant
        returns (bool)
    {
        require(
            IFactory(factory).containsDao(_dao),
            "Shop: only DAO can sell LPs"
        );

        PrivateOffer storage offer = privateOffers[_dao][_id];

        require(offer.isActive, "Shop: this offer is disabled");

        offer.isActive = false;

        require(offer.recipient == msg.sender, "Shop: wrong recipient");

        IERC20(offer.currency).safeTransferFrom(
            msg.sender,
            _dao,
            offer.currencyAmount
        );

        address lp = IDao(_dao).lp();

        bool b = ILP(lp).mint(msg.sender, offer.lpAmount);

        require(b, "Shop: mint error");

        return true;
    }
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

File 3 of 17 : SafeERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.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 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'
        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) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _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
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

File 5 of 17 : LP.sol
/*
██   ██ ██████   █████   ██████      ██      ██████  
 ██ ██  ██   ██ ██   ██ ██    ██     ██      ██   ██ 
  ███   ██   ██ ███████ ██    ██     ██      ██████  
 ██ ██  ██   ██ ██   ██ ██    ██     ██      ██      
██   ██ ██████  ██   ██  ██████      ███████ ██      
*/
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.6;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol";

import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

import "../interfaces/IDao.sol";

contract LP is ReentrancyGuard, ERC20, ERC20Permit {
    address public immutable dao;

    address public immutable shop;

    bool public mintable = true;
    bool public burnable = true;
    bool public mintableStatusFrozen = false;
    bool public burnableStatusFrozen = false;

    constructor(
        string memory _name,
        string memory _symbol,
        address _dao
    ) ERC20(_name, _symbol) ERC20Permit(_name) {
        dao = _dao;
        shop = msg.sender;
    }

    modifier onlyDao() {
        require(msg.sender == dao, "LP: caller is not the dao");
        _;
    }

    modifier onlyShop() {
        require(msg.sender == shop, "LP: caller is not the shop");
        _;
    }

    function mint(address _to, uint256 _amount)
        external
        onlyShop
        returns (bool)
    {
        require(mintable, "LP: minting is disabled");
        _mint(_to, _amount);
        return true;
    }

    function burn(
        uint256 _amount,
        address[] memory _tokens,
        address[] memory _adapters,
        address[] memory _pools
    ) external nonReentrant returns (bool) {
        require(burnable, "LP: burning is disabled");
        require(msg.sender != dao, "LP: DAO can't burn LP");
        require(_amount <= balanceOf(msg.sender), "LP: insufficient balance");
        require(totalSupply() > 0, "LP: Zero share");

        uint256 _share = (1e18 * _amount) / (totalSupply());

        _burn(msg.sender, _amount);

        bool b = IDao(dao).burnLp(
            msg.sender,
            _share,
            _tokens,
            _adapters,
            _pools
        );

        require(b, "LP: burning error");

        return true;
    }

    function changeMintable(bool _mintable) external onlyDao returns (bool) {
        require(!mintableStatusFrozen, "LP: minting status is frozen");
        mintable = _mintable;
        return true;
    }

    function changeBurnable(bool _burnable) external onlyDao returns (bool) {
        require(!burnableStatusFrozen, "LP: burnable status is frozen");
        burnable = _burnable;
        return true;
    }

    function freezeMintingStatus() external onlyDao returns (bool) {
        mintableStatusFrozen = true;
        return true;
    }

    function freezeBurningStatus() external onlyDao returns (bool) {
        burnableStatusFrozen = true;
        return true;
    }
}

File 6 of 17 : IFactory.sol
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.6;

interface IFactory {
    function getDaos() external view returns (address[] memory);

    function shop() external view returns (address);

    function monthlyCost() external view returns (uint256);

    function subscriptions(address _dao) external view returns (uint256);

    function containsDao(address _dao) external view returns (bool);
}

File 7 of 17 : IDao.sol
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.6;

interface IDao {
    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function lp() external view returns (address);

    function burnLp(
        address _recipient,
        uint256 _share,
        address[] memory _tokens,
        address[] memory _adapters,
        address[] memory _pools
    ) external returns (bool);

    function setLp(address _lp) external returns (bool);

    function quorum() external view returns (uint8);

    function executedTx(bytes32 _txHash) external view returns (bool);

    function mintable() external view returns (bool);

    function burnable() external view returns (bool);

    function numberOfPermitted() external view returns (uint256);

    function numberOfAdapters() external view returns (uint256);
}

File 8 of 17 : ILP.sol
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.6;

interface ILP {
    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function burn(address _to, uint256 _amount) external returns (bool);

    function mint(address _to, uint256 _amount) external returns (bool);

    function mintable() external view returns (bool);

    function burnable() external view returns (bool);

    function mintableStatusFrozen() external view returns (bool);

    function burnableStatusFrozen() external view returns (bool);
}

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

pragma solidity ^0.8.0;

/**
 * @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 on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        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");

        (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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private pure returns (bytes memory) {
        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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 10 of 17 : ERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * 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 override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override 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 value {ERC20} uses, unless this function is
     * 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 override returns (uint8) {
        return 18;
    }

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

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

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * 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.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

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

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

File 11 of 17 : draft-ERC20Permit.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./draft-IERC20Permit.sol";
import "../ERC20.sol";
import "../../../utils/cryptography/draft-EIP712.sol";
import "../../../utils/cryptography/ECDSA.sol";
import "../../../utils/Counters.sol";

/**
 * @dev Implementation 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.
 *
 * _Available since v3.4._
 */
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
    using Counters for Counters.Counter;

    mapping(address => Counters.Counter) private _nonces;

    // solhint-disable-next-line var-name-mixedcase
    bytes32 private immutable _PERMIT_TYPEHASH =
        keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");

    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     * It's a good idea to use the same `name` that is defined as the ERC20 token name.
     */
    constructor(string memory name) EIP712(name, "1") {}

    /**
     * @dev See {IERC20Permit-permit}.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual override {
        require(block.timestamp <= deadline, "ERC20Permit: expired deadline");

        bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));

        bytes32 hash = _hashTypedDataV4(structHash);

        address signer = ECDSA.recover(hash, v, r, s);
        require(signer == owner, "ERC20Permit: invalid signature");

        _approve(owner, spender, value);
    }

    /**
     * @dev See {IERC20Permit-nonces}.
     */
    function nonces(address owner) public view virtual override returns (uint256) {
        return _nonces[owner].current();
    }

    /**
     * @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view override returns (bytes32) {
        return _domainSeparatorV4();
    }

    /**
     * @dev "Consume a nonce": return the current value and increment.
     *
     * _Available since v4.1._
     */
    function _useNonce(address owner) internal virtual returns (uint256 current) {
        Counters.Counter storage nonce = _nonces[owner];
        current = nonce.current();
        nonce.increment();
    }
}

File 12 of 17 : IERC20Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
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);
}

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

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;
    }
}

File 14 of 17 : draft-IERC20Permit.sol
// SPDX-License-Identifier: MIT

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 IERC20Permit {
    /**
     * @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);
}

File 15 of 17 : draft-EIP712.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

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

pragma solidity ^0.8.0;

/**
 * @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 {
    /**
     * @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.
     *
     * 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]
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        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.
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return recover(hash, v, r, s);
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return recover(hash, r, vs);
        } else {
            revert("ECDSA: invalid signature length");
        }
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        bytes32 s;
        uint8 v;
        assembly {
            s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
            v := add(shr(255, vs), 27)
        }
        return recover(hash, v, r, s);
    }

    /**
     * @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) {
        // 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 (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): 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.
        require(
            uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0,
            "ECDSA: invalid signature 's' value"
        );
        require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value");

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        require(signer != address(0), "ECDSA: invalid signature");

        return signer;
    }

    /**
     * @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 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));
    }
}

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

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"lp","type":"address"}],"name":"LpCreated","type":"event"},{"inputs":[{"internalType":"address","name":"_dao","type":"address"},{"internalType":"uint256","name":"_id","type":"uint256"}],"name":"buyPrivateOffer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_dao","type":"address"},{"internalType":"uint256","name":"_lpAmount","type":"uint256"}],"name":"buyPublicOffer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_lpName","type":"string"},{"internalType":"string","name":"_lpSymbol","type":"string"}],"name":"createLp","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_recipient","type":"address"},{"internalType":"address","name":"_currency","type":"address"},{"internalType":"uint256","name":"_currencyAmount","type":"uint256"},{"internalType":"uint256","name":"_lpAmount","type":"uint256"}],"name":"createPrivateOffer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_id","type":"uint256"}],"name":"disablePrivateOffer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"_isActive","type":"bool"},{"internalType":"address","name":"_currency","type":"address"},{"internalType":"uint256","name":"_rate","type":"uint256"}],"name":"initPublicOffer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"lps","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"numberOfPrivateOffers","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"privateOffers","outputs":[{"internalType":"bool","name":"isActive","type":"bool"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"address","name":"currency","type":"address"},{"internalType":"uint256","name":"currencyAmount","type":"uint256"},{"internalType":"uint256","name":"lpAmount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"publicOffers","outputs":[{"internalType":"bool","name":"isActive","type":"bool"},{"internalType":"address","name":"currency","type":"address"},{"internalType":"uint256","name":"rate","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_factory","type":"address"}],"name":"setFactory","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

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Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
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