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0x163883263274e8Ef6332cFa84F35B23c6C51dF72
 

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Register For Dro...150625402022-07-02 10:21:16754 days ago1656757276IN
0x16388326...c6C51dF72
0 ETH0.000199937
Register For Dro...132943262021-09-25 10:02:521034 days ago1632564172IN
0x16388326...c6C51dF72
0 ETH0.0007178525
Resolve Drop132400022021-09-17 0:23:451043 days ago1631838225IN
0x16388326...c6C51dF72
0 ETH0.0165131545.02441049
Request VRF132399762021-09-17 0:19:341043 days ago1631837974IN
0x16388326...c6C51dF72
0 ETH0.0143827171.23892726
Register For Dro...132395422021-09-16 22:46:321043 days ago1631832392IN
0x16388326...c6C51dF72
0 ETH0.0073507875.21903346
Register For Dro...132394962021-09-16 22:36:411043 days ago1631831801IN
0x16388326...c6C51dF72
0 ETH0.020793280.3
Register For Dro...132394812021-09-16 22:32:151043 days ago1631831535IN
0x16388326...c6C51dF72
0 ETH0.0067230484.21382621
Register For Dro...132393482021-09-16 22:04:461043 days ago1631829886IN
0x16388326...c6C51dF72
0 ETH0.0073818892.46660274
Register For Dro...132393372021-09-16 22:01:251043 days ago1631829685IN
0x16388326...c6C51dF72
0 ETH0.0070311479.85670459
Register For Dro...132393292021-09-16 21:58:151043 days ago1631829495IN
0x16388326...c6C51dF72
0 ETH0.0043908155
Register For Dro...132393012021-09-16 21:52:421043 days ago1631829162IN
0x16388326...c6C51dF72
0 ETH0.0098265880.06992001
Register For Dro...132391482021-09-16 21:16:221043 days ago1631826982IN
0x16388326...c6C51dF72
0 ETH0.0037170958.97804735
Register For Dro...132391382021-09-16 21:15:101043 days ago1631826910IN
0x16388326...c6C51dF72
0 ETH0.0044264370.31440157
Register For Dro...132382392021-09-16 17:55:271043 days ago1631814927IN
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0 ETH0.0061396297.57053545
Register For Dro...132378672021-09-16 16:28:531043 days ago1631809733IN
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0 ETH0.0090846793.05213009
Register For Dro...132370322021-09-16 13:29:231043 days ago1631798963IN
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0 ETH0.0035306356
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0 ETH0.00918972
Register For Dro...132368272021-09-16 12:45:141043 days ago1631796314IN
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0 ETH0.0171698960.17493909
Register For Dro...132363642021-09-16 11:01:321043 days ago1631790092IN
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0 ETH0.0174438756.17252812
Register For Dro...132358692021-09-16 9:06:391043 days ago1631783199IN
0x16388326...c6C51dF72
0 ETH0.002905446.15274931
Register For Dro...132350202021-09-16 6:01:011044 days ago1631772061IN
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0 ETH0.0085258659.07981066
Register For Dro...132344202021-09-16 3:48:281044 days ago1631764108IN
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0 ETH0.0029298746.61550336
Register For Dro...132340732021-09-16 2:32:091044 days ago1631759529IN
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0 ETH0.01455998104.28969836
Register For Dro...132339792021-09-16 2:13:271044 days ago1631758407IN
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0 ETH0.005407885.77416583
Register For Dro...132339482021-09-16 2:06:161044 days ago1631757976IN
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0 ETH0.0023387972.72601927
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Contract Source Code Verified (Exact Match)

Contract Name:
LameloDrop

Compiler Version
v0.7.5+commit.eb77ed08

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
File 1 of 8 : LameloDrop.sol
//SPDX-License-Identifier: Unlicensed
pragma solidity >=0.6.0 <0.8.0;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/EnumerableSet.sol";
import "./interfaces/IRNG.sol";

contract LameloDrop is Ownable {

    uint8 constant PoolIds_RED_MARS = 1;
    uint8 constant PoolIds_BLUE_NEPTUNE = 2;
    uint8 constant PoolIds_SILVER = 3;

    mapping(uint8 => mapping(uint16 => uint16)) public participantingIdsPerPool;
    mapping(uint8 => uint16) public poolCount;

    mapping(uint16 => uint8) internal tokenData;

    bytes32 public requestHash;
    bool    public canResolve = false;
    bool    public resolved = false;
    uint256 public random = 0;
    bool    public hasPrizes = false;

    // contracts
    IERC721 public lameloContract;
    IRNG    public rnd;
    uint256 public startTime;
    uint256 public endTime;

    address public winner_address_RED_MARS;
    address public winner_address_BLUE_NEPTUNE;
    address public winner_address_SILVER;

    constructor(
        address _LBCAddress,
        address _rndContractAddress,
        uint256 _startTime,
        uint256 _endTime
    ) {
        lameloContract = IERC721(_LBCAddress);
        rnd = IRNG(_rndContractAddress);
        startTime = _startTime;
        endTime = _endTime;
    }

    function onERC721Received(
        address, // operator
        address, // from,
        uint256 receivedTokenId,
        bytes calldata // data
    ) external returns (bytes4) {
        require(
            msg.sender == address(lameloContract),
            "Must be lameloContract address"
        );

        if (
            receivedTokenId == 498 ||
            receivedTokenId == 499 ||
            receivedTokenId == 500
        ) {
            if (
                lameloContract.ownerOf(498) == address(this) &&
                lameloContract.ownerOf(499) == address(this) &&
                lameloContract.ownerOf(500) == address(this)
            ) {
                hasPrizes = true;
            }

            return this.onERC721Received.selector;
        }

        revert("bad token received");
    }

    // 1 - receive token id array uint16[]
    function registerForDrop(uint16[] calldata tokenIds) public {
        require(hasPrizes, "Does not have prize tokens");
        require(getTimestamp() > startTime, "Not started");
        require(getTimestamp() < endTime, "Already ended");

        for (uint16 i = 0; i < tokenIds.length; i++) {
            uint16 thisId = tokenIds[i];

            // 1 - check if token was previously used
            require(!isTokenUsed(thisId), "Already has a ticket");
            require(thisId > 500, "Token id must be over 500");

            // NO POINT in checking ownership now.. if someone wants to pay someone else's token participation, WHY NOT ?
            // 2 - check ownership
            // if (lameloContract.ownerOf(thisId) != msg.sender) {
            //     revert("not owner");
            // }

            // 3 get pool id from token id
            uint8 poolId = 0;
            if(500 < thisId && thisId <= 1500 ) {
                poolId = PoolIds_SILVER;
            } else if (1500 < thisId && thisId <= 3500 ) {
                poolId = PoolIds_BLUE_NEPTUNE;
            } else if (3500 < thisId ) {
                poolId = PoolIds_RED_MARS;
            }

            // 4 - register entry
            poolCount[poolId]++;
            participantingIdsPerPool[poolId][poolCount[poolId]] = thisId;

            // register as used
            setTokenUsed(thisId);
        }
    }

    function requestVRF() public onlyOwner {
        require(getTimestamp() > endTime, "Not ended");
        requestHash = rnd.requestRandomNumberWithCallback();
    }

    function process(uint256 _random, bytes32 _requestId) public {
        require(msg.sender == address(rnd), "Unauthorised");
        require(requestHash == _requestId, "Unauthorised");
        require(!canResolve, "VRF already received");
        require(!resolved, "Already resolved");

        canResolve = true;
        random = _random;
    }

    function resolveDrop() public onlyOwner {
        require(canResolve, "NO VRF YET");
        require(!resolved, "Already resolved");
        require(getTimestamp() > endTime, "Already ended");

        // take VRF
        // add 1 to index so everyone has a chance
        uint16 _index = uint16(random % poolCount[PoolIds_RED_MARS]) + 1;
        uint16 winingTokenId = participantingIdsPerPool[PoolIds_RED_MARS][_index];
        winner_address_RED_MARS = lameloContract.ownerOf(winingTokenId); 
        random = random >> 8;

        _index = uint16(random % poolCount[PoolIds_BLUE_NEPTUNE]) + 1;
        winingTokenId = participantingIdsPerPool[PoolIds_BLUE_NEPTUNE][_index];
        winner_address_BLUE_NEPTUNE = lameloContract.ownerOf(winingTokenId); 
        random = random >> 8;

        _index = uint16(random % poolCount[PoolIds_SILVER]) + 1;
        winingTokenId = participantingIdsPerPool[PoolIds_SILVER][_index];
        winner_address_SILVER = lameloContract.ownerOf(winingTokenId); 
        random = random >> 8;

        resolved = true;

        // transfer tokens to new owners
        lameloContract.transferFrom(address(this), winner_address_RED_MARS, 498);
        lameloContract.transferFrom(address(this), winner_address_BLUE_NEPTUNE, 499);
        lameloContract.transferFrom(address(this), winner_address_SILVER, 500);
    }

    function recoverTokens() external onlyOwner {
        require(hasPrizes, "Does not have prize tokens");
        require(!canResolve, "VRF already received");
        require(!resolved, "Already resolved");
        // if shit hits the fan recover stuff

        // transfer tokens to msg.sender // owner
        lameloContract.transferFrom(address(this), msg.sender, 500);
        lameloContract.transferFrom(address(this), msg.sender, 499);
        lameloContract.transferFrom(address(this), msg.sender, 498);
    }

    function isTokenUsed(uint16 _position) public view returns (bool result) {
        uint16 byteNum = uint16(_position / 8);
        uint16 bitPos = uint8(_position - byteNum * 8);
        if (tokenData[byteNum] == 0) return false;
        return tokenData[byteNum] & (0x01 * 2**bitPos) != 0;
    }

    function setTokenUsed(uint16 _position) public {
        uint16 byteNum = uint16(_position / 8);
        uint16 bitPos = uint8(_position - byteNum * 8);
        tokenData[byteNum] = uint8(tokenData[byteNum] | (2**bitPos));
    }

    /// web3 Frontend - VIEW METHODS

    function getUsedTokenData(uint8 _page, uint16 _perPage)
        public
        view
        returns (uint8[] memory)
    {
        _perPage = _perPage / 8;
        uint16 i = _perPage * _page;
        uint16 max = i + (_perPage);
        uint16 j = 0;
        uint8[] memory retValues;

        assembly {
            mstore(retValues, _perPage)
        }

        while (i < max) {
            retValues[j] = tokenData[i];
            j++;
            i++;
        }

        assembly {
            // move pointer to freespace otherwise return calldata gets messed up
            mstore(0x40, msize())
        }
        return retValues;
    }

    function getStats() public view returns (
        uint16[3] memory _poolCounts,
        address[3] memory _winners,
        uint8[] memory _tokenData
    ) {
        _tokenData = getUsedTokenData(0, 10000);

        _poolCounts = [
            poolCount[PoolIds_RED_MARS],
            poolCount[PoolIds_BLUE_NEPTUNE],
            poolCount[PoolIds_SILVER]
        ];

       _winners = [
           winner_address_RED_MARS,
           winner_address_BLUE_NEPTUNE,
           winner_address_SILVER
       ];
    }

    function getTimestamp() public view virtual returns(uint256) {
        return block.timestamp;
    }

    /// blackhole prevention methods
    function retrieveERC20(address _tracker, uint256 amount)
        external
        onlyOwner
    {
        IERC20(_tracker).transfer(msg.sender, amount);
    }

    function retrieve721(address _tracker, uint256 id) external onlyOwner {
        IERC721(_tracker).transferFrom(address(this), msg.sender, id);
    }

}

File 2 of 8 : IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

import "../../introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
      * @dev Safely transfers `tokenId` token from `from` to `to`.
      *
      * Requirements:
      *
      * - `from` cannot be the zero address.
      * - `to` cannot be the zero address.
      * - `tokenId` token must exist and be owned by `from`.
      * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
      * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
      *
      * Emits a {Transfer} event.
      */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}

File 3 of 8 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 4 of 8 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

File 5 of 8 : EnumerableSet.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;

        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) { // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            bytes32 lastvalue = set._values[lastIndex];

            // Move the last value to the index where the value to delete is
            set._values[toDeleteIndex] = lastvalue;
            // Update the index for the moved value
            set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        require(set._values.length > index, "EnumerableSet: index out of bounds");
        return set._values[index];
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }


    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }
}

File 6 of 8 : IRNG.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.7.0;

abstract contract IRNG {
    function requestRandomNumber() external virtual returns (bytes32 requestId);

    function requestRandomNumberWithCallback()
        external
        virtual
        returns (bytes32);

    function isRequestComplete(bytes32 requestId)
        external
        view
        virtual
        returns (bool isCompleted);

    function randomNumber(bytes32 requestId)
        external
        view
        virtual
        returns (uint256 randomNum);
}

File 7 of 8 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

File 8 of 8 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

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

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_LBCAddress","type":"address"},{"internalType":"address","name":"_rndContractAddress","type":"address"},{"internalType":"uint256","name":"_startTime","type":"uint256"},{"internalType":"uint256","name":"_endTime","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"canResolve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"endTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getStats","outputs":[{"internalType":"uint16[3]","name":"_poolCounts","type":"uint16[3]"},{"internalType":"address[3]","name":"_winners","type":"address[3]"},{"internalType":"uint8[]","name":"_tokenData","type":"uint8[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"_page","type":"uint8"},{"internalType":"uint16","name":"_perPage","type":"uint16"}],"name":"getUsedTokenData","outputs":[{"internalType":"uint8[]","name":"","type":"uint8[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"hasPrizes","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_position","type":"uint16"}],"name":"isTokenUsed","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lameloContract","outputs":[{"internalType":"contract IERC721","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"receivedTokenId","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"uint16","name":"","type":"uint16"}],"name":"participantingIdsPerPool","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"","type":"uint8"}],"name":"poolCount","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_random","type":"uint256"},{"internalType":"bytes32","name":"_requestId","type":"bytes32"}],"name":"process","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"random","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"recoverTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16[]","name":"tokenIds","type":"uint16[]"}],"name":"registerForDrop","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"requestHash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"requestVRF","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"resolveDrop","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"resolved","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_tracker","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"retrieve721","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_tracker","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"retrieveERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rnd","outputs":[{"internalType":"contract IRNG","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_position","type":"uint16"}],"name":"setTokenUsed","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"winner_address_BLUE_NEPTUNE","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"winner_address_RED_MARS","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"winner_address_SILVER","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000139b522955d54482e7662927653abb0bfb6f19ba00000000000000000000000072170f577f3b221b3478e09ccd5323445a8460d700000000000000000000000000000000000000000000000000000000611ee270000000000000000000000000000000000000000000000000000000006143cc70

-----Decoded View---------------
Arg [0] : _LBCAddress (address): 0x139B522955D54482E7662927653ABb0bFB6F19BA
Arg [1] : _rndContractAddress (address): 0x72170F577F3B221b3478E09ccD5323445a8460d7
Arg [2] : _startTime (uint256): 1629414000
Arg [3] : _endTime (uint256): 1631833200

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 000000000000000000000000139b522955d54482e7662927653abb0bfb6f19ba
Arg [1] : 00000000000000000000000072170f577f3b221b3478e09ccd5323445a8460d7
Arg [2] : 00000000000000000000000000000000000000000000000000000000611ee270
Arg [3] : 000000000000000000000000000000000000000000000000000000006143cc70


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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.