Contract 0x63bA5f956fD23c1f4f83b6f1099d917EDb6D2b18

Contract Overview

Balance:
0.00315 Ether
Txn Hash
Method
Block
From
To
Value
0xbd6e05c568aaa8c7bfa2424b8828e50f306d443a169dd967e978a7493194b8f2Approve Lease Of...103724072022-03-22 18:53:26106 days 34 mins ago0x7c2c9edc8b8c81502aa67f31197bface0ab74427 IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.00053305 2.50000003
0x2637c39f0dbd3b515db999b7142c3a6410be55fefd7dd665191b38346ce4aba6Send Lease Offer103723982022-03-22 18:51:11106 days 36 mins ago0xf7e6b1374b2f910413515129fef34c06697a1bd2 IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.00051212 2.50000003
0x5c5a1e40812cfa3a4ff30d430fdaaef628fa280c8b977952efaf2b049d50ec4cLease103655382022-03-21 14:14:40107 days 5 hrs ago0x580d2ddb6ed71c23059d5d83891d525a3b750a2b IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180.0035 Ether0.00055657 2.50000011
0x214525a6635ba0acec725fbfff962a8da5a004ed8f66d543f907d63ea88b94a5Set Token Leasab...103655142022-03-21 14:08:40107 days 5 hrs ago0x7c2c9edc8b8c81502aa67f31197bface0ab74427 IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.00040357 2.50000015
0x0c9071eb3ad8cb19a43a0663fd1025acb6644cee99319dbaccd7c3eaacc30e9aSend Lease Offer103655102022-03-21 14:07:40107 days 5 hrs ago0x580d2ddb6ed71c23059d5d83891d525a3b750a2b IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.00051212 2.50000016
0x9b812714dea5f1e84a953ec3ebccb390a884901f2fbea8b19eaed045569caeadSet Token Leasab...103655022022-03-21 14:05:40107 days 5 hrs ago0x7c2c9edc8b8c81502aa67f31197bface0ab74427 IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.00039722 2.50000017
0x09282c59df13a835981b85dea9a7147be5ff6141187abb0c5b949011fe1f14eaSet Token Leasab...103654982022-03-21 14:04:40107 days 5 hrs ago0x7c2c9edc8b8c81502aa67f31197bface0ab74427 IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.00043362 2.50000016
0xed73084f6c5250e4b848912a7a1ac41eb5f0f87f8fba7dfab6e10b1c01a46f48Set NFT Address103654612022-03-21 13:55:25107 days 5 hrs ago0x580d2ddb6ed71c23059d5d83891d525a3b750a2b IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.00002928 1.00000007
0x3656bb9ed9a6fb40e24874e83c4a8c156f60f34baa1b0cf0a80020b40311b8e9Set NFT Address103646312022-03-21 10:27:40107 days 9 hrs ago0x580d2ddb6ed71c23059d5d83891d525a3b750a2b IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.0000293 1.00000024
0xc82417c73a3063826de36dc794ec39cd38ce884854a952b3397ef121fb18fc7fSet NFT Address103646252022-03-21 10:26:10107 days 9 hrs ago0x580d2ddb6ed71c23059d5d83891d525a3b750a2b IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.00002928 1.00000023
0xcce8d17170ebe5c6b6851b3bbcc67b1b44e947bb515de999f4544d19db0ecbc1Set Token Leasab...103645682022-03-21 10:11:55107 days 9 hrs ago0x580d2ddb6ed71c23059d5d83891d525a3b750a2b IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.00009001 2.50000011
0xaec66d73ca1fd5bd06e3af87130164a1e43d2633afe91d8582781af59949a763Set NFT Address103624652022-03-21 1:25:48107 days 18 hrs ago0x580d2ddb6ed71c23059d5d83891d525a3b750a2b IN  0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180 Ether0.0000293 1.00000001
0x6b0aed5653bf1c7376bb040815d814ae890b31302b7e72584b6a7d651ecee0430x60806040103623592022-03-21 0:59:15107 days 18 hrs ago0x580d2ddb6ed71c23059d5d83891d525a3b750a2b IN  Create: Leasing0 Ether0.00891972 2.50000002
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xbd6e05c568aaa8c7bfa2424b8828e50f306d443a169dd967e978a7493194b8f2103724072022-03-22 18:53:26106 days 34 mins ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0xc778417e063141139fce010982780140aa0cd5ab0 Ether
0xbd6e05c568aaa8c7bfa2424b8828e50f306d443a169dd967e978a7493194b8f2103724072022-03-22 18:53:26106 days 34 mins ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0xc778417e063141139fce010982780140aa0cd5ab0 Ether
0xbd6e05c568aaa8c7bfa2424b8828e50f306d443a169dd967e978a7493194b8f2103724072022-03-22 18:53:26106 days 34 mins ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0xbd6e05c568aaa8c7bfa2424b8828e50f306d443a169dd967e978a7493194b8f2103724072022-03-22 18:53:26106 days 34 mins ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0xbd6e05c568aaa8c7bfa2424b8828e50f306d443a169dd967e978a7493194b8f2103724072022-03-22 18:53:26106 days 34 mins ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x2637c39f0dbd3b515db999b7142c3a6410be55fefd7dd665191b38346ce4aba6103723982022-03-22 18:51:11106 days 36 mins ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0xc778417e063141139fce010982780140aa0cd5ab0 Ether
0x2637c39f0dbd3b515db999b7142c3a6410be55fefd7dd665191b38346ce4aba6103723982022-03-22 18:51:11106 days 36 mins ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x2637c39f0dbd3b515db999b7142c3a6410be55fefd7dd665191b38346ce4aba6103723982022-03-22 18:51:11106 days 36 mins ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x2637c39f0dbd3b515db999b7142c3a6410be55fefd7dd665191b38346ce4aba6103723982022-03-22 18:51:11106 days 36 mins ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x2637c39f0dbd3b515db999b7142c3a6410be55fefd7dd665191b38346ce4aba6103723982022-03-22 18:51:11106 days 36 mins ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x5c5a1e40812cfa3a4ff30d430fdaaef628fa280c8b977952efaf2b049d50ec4c103655382022-03-21 14:14:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b180x580d2ddb6ed71c23059d5d83891d525a3b750a2b0.00035 Ether
0x5c5a1e40812cfa3a4ff30d430fdaaef628fa280c8b977952efaf2b049d50ec4c103655382022-03-21 14:14:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x5c5a1e40812cfa3a4ff30d430fdaaef628fa280c8b977952efaf2b049d50ec4c103655382022-03-21 14:14:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x5c5a1e40812cfa3a4ff30d430fdaaef628fa280c8b977952efaf2b049d50ec4c103655382022-03-21 14:14:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x5c5a1e40812cfa3a4ff30d430fdaaef628fa280c8b977952efaf2b049d50ec4c103655382022-03-21 14:14:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x5c5a1e40812cfa3a4ff30d430fdaaef628fa280c8b977952efaf2b049d50ec4c103655382022-03-21 14:14:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x214525a6635ba0acec725fbfff962a8da5a004ed8f66d543f907d63ea88b94a5103655142022-03-21 14:08:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x214525a6635ba0acec725fbfff962a8da5a004ed8f66d543f907d63ea88b94a5103655142022-03-21 14:08:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x214525a6635ba0acec725fbfff962a8da5a004ed8f66d543f907d63ea88b94a5103655142022-03-21 14:08:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x0c9071eb3ad8cb19a43a0663fd1025acb6644cee99319dbaccd7c3eaacc30e9a103655102022-03-21 14:07:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0xc778417e063141139fce010982780140aa0cd5ab0 Ether
0x0c9071eb3ad8cb19a43a0663fd1025acb6644cee99319dbaccd7c3eaacc30e9a103655102022-03-21 14:07:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x0c9071eb3ad8cb19a43a0663fd1025acb6644cee99319dbaccd7c3eaacc30e9a103655102022-03-21 14:07:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x0c9071eb3ad8cb19a43a0663fd1025acb6644cee99319dbaccd7c3eaacc30e9a103655102022-03-21 14:07:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x0c9071eb3ad8cb19a43a0663fd1025acb6644cee99319dbaccd7c3eaacc30e9a103655102022-03-21 14:07:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
0x9b812714dea5f1e84a953ec3ebccb390a884901f2fbea8b19eaed045569caead103655022022-03-21 14:05:40107 days 5 hrs ago 0x63ba5f956fd23c1f4f83b6f1099d917edb6d2b18 0x39e389a18d5bdd00cbeac36c9857bca50fd72bd40 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
Leasing

Compiler Version
v0.8.11+commit.d7f03943

Optimization Enabled:
Yes with 200 runs

Other Settings:
byzantium EvmVersion
File 1 of 16 : Leasing.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.9 <0.9.0;
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/interfaces/IERC20.sol";
	import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";

interface IFYC is IERC721 {
    function totalSupply() external view returns(uint256 number);
    function getTierNumberOf(uint256 _tokenId) external view returns(uint8 tierNumber);
    function getTierPrice(uint8 tierNumber) external view returns(uint256 tierPrice);
    function royaltyInfo(uint256 _tokenId, uint256 _salePrice) external view returns (address roalityReceiver, uint256 royaltyAmount);
    function setRoality(address receiver, uint96 feeNumerator) external;
    function getLatestPrice() external view returns (int price);
}

contract Leasing is Ownable, ReentrancyGuard, AccessControlEnumerable {
    // Protect uint using safemath
    using SafeMath for uint256;

    // Log more in depth events such as withdrawals and cancelled txns
    event ApproveLeasing(uint tokenId);
	event LogWithdrawal(address indexed withdrawer, address indexed withdrawalAccount, uint amount);
    event LogCanceled();
    
    IERC20 _weth = IERC20(0xc778417E063141139Fce010982780140Aa0cD5Ab);
    IFYC _nft;
    uint8 private _refundPercentFee = 98;
    uint16 private _blocksPerDay = 5760;

    struct LeaseOffer {
        address from;
        uint256 price;
        uint32 expiresIn;
        uint256 createdAt;
    }

    struct LeasableToken {
        uint256 tokenId;
        uint256 price;
        uint32 duration;
    }
    
    mapping (uint256 => LeaseOffer) private _lease;
    mapping (address => uint256[]) private _addrToLeasingTokens;
    mapping(uint256 => mapping(address => bool)) _offerState;
    mapping (uint256 => LeaseOffer[]) leaseOffers;
    mapping (uint256 => bool) leasable;
    LeasableToken[] private _leasableTokens;
    uint256[] _leasedTokens;
    
    modifier onlyOwnerOf(uint256 _tokenId) {
        require(msg.sender == address(_nft.ownerOf(_tokenId)), "caller is not the owner of token");
        _;
    }

    function getNFTAddress() external view returns(address) {
        return address(_nft);
    }

    function setNFTAddress(address nft_address) external onlyOwner {
        _nft = IFYC(nft_address);
    }

    function getBlocksPerDay() external view returns(uint16) {
        return _blocksPerDay;
    }

    function setBlocksPerDay(uint16 _blocks) external {
        _blocksPerDay = _blocks;
    }

    function withDraw() nonReentrant external onlyOwner {
        address payable tgt = payable(owner());
        (bool success1, ) = tgt.call{value:address(this).balance}("");
        require(success1, "Failed to Withdraw VET");
    }

    function getRoalityInfo(uint256 _tokenId, uint256 _salePrice) public view returns(address, uint256) {
        (address roalityReceiver, uint256 royaltyAmount) = _nft.royaltyInfo(_tokenId, _salePrice);

        return (roalityReceiver, royaltyAmount);
    }

    /**
     * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a
     * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points.
     */
    function setRoality(address receiver, uint96 feeNumerator) external onlyOwner {
        _nft.setRoality(receiver, feeNumerator);
    }

    function getRefundFee() external view returns(uint8) {
        return _refundPercentFee;
    }

    function setRefundFee(uint8 fee) external onlyOwner {
        require(fee > 0 && fee <100, "Invalied percentage value");
        _refundPercentFee = fee;
    }

    function getLeasable(uint256 _tokenId) external view returns(bool) {
        if(leasable[_tokenId]) return true;
        else return false;
    }

    function setTokenLeasable(uint256 _tokenId, uint256 _price, uint32 _duration) nonReentrant external onlyOwnerOf(_tokenId) {
        require(_price >= _nft.getTierPrice(_nft.getTierNumberOf(_tokenId)) / 10, "Amount of ether sent is not correct.");
        require(_duration >= 30, "The minimum to lease the membership is 30 days.");

        LeasableToken memory leasableToken = getLeasableToken(_tokenId);
        require(leasableToken.tokenId == 0, "Token is already leasable");
        _leasableTokens.push(LeasableToken(_tokenId, _price, _duration));
        leasable[_tokenId] = true;
    }

    function getLeasableToken(uint256 _tokenId) public view returns(LeasableToken memory) {
        LeasableToken memory leasableToken;
        for(uint256 i = 0; i < _leasableTokens.length; i++) {
            if(_leasableTokens[i].tokenId == _tokenId) {
                leasableToken = _leasableTokens[i];
                break;
            }
        }

        return leasableToken;
    }

    function getLease(uint256 _tokenId) external view returns(LeaseOffer memory) {
        LeaseOffer memory leaseItem = _lease[_tokenId];
        if (leaseItem.price > 0 && (block.number - leaseItem.createdAt) > (leaseItem.expiresIn * _blocksPerDay)) {
            leaseItem.from = address(0);
            leaseItem.price = 0;
            leaseItem.expiresIn = 0;
            leaseItem.createdAt = 0;
        }
        
        return leaseItem;
    }

    function getLeasedTokens() external view returns(uint256[] memory) {
        uint256[] memory leasedTokens = _leasedTokens;
        for(uint256 i = 0; i < _leasedTokens.length; i++) {
            LeaseOffer memory leaseItem = _lease[leasedTokens[i]];

            if (leaseItem.price > 0 && (block.number - leaseItem.createdAt) > (leaseItem.expiresIn * _blocksPerDay)) {
                leasedTokens[i] = leasedTokens[leasedTokens.length - 1];
                delete leasedTokens[leasedTokens.length - 1];
            }
        }

        return leasedTokens;
    }

    function updateLeasableToken(uint256 _tokenId, uint256 _price, uint32 _duration) external onlyOwnerOf(_tokenId) {
        require(_price >= _nft.getTierPrice(_nft.getTierNumberOf(_tokenId)) / 10, "Amount of ether sent is not correct.");
        require(_duration >= 30, "The minimum to lease the membership is 30 days.");
        
        LeasableToken memory leasableToken = getLeasableToken(_tokenId);
        require(leasableToken.tokenId != 0, "Token is not leasable");
        for(uint256 i = 0; i < _leasableTokens.length; i++) {
            if(_leasableTokens[i].tokenId == _tokenId) {
                _leasableTokens[i].price = _price;
                _leasableTokens[i].duration = _duration;
                break;
            }
        }
    }

    function cancelTokenLeasable(uint256 _tokenId) external onlyOwnerOf(_tokenId) {
        for(uint256 i = 0; i < _leasableTokens.length; i++) {
            if (_leasableTokens[i].tokenId == _tokenId) {
                _leasableTokens[i] = _leasableTokens[_leasableTokens.length - 1];
                _leasableTokens.pop();
                break;
            }
        }
    }

    function getLeasableTokens() external view returns(LeasableToken[] memory) {
        return _leasableTokens;
    }

    function getLeaseOffers(uint256 _tokenId) external view returns(LeaseOffer[] memory) {
        return leaseOffers[_tokenId];
    }

    function getLeasingTokens(address _address) external view returns (uint256[] memory) {
        uint256[] memory leasingTokens = _addrToLeasingTokens[_address];
        
        for(uint256 i = 0; i < _addrToLeasingTokens[_address].length; i++) {
            LeaseOffer memory leaseItem = _lease[leasingTokens[i]];

            if (leaseItem.price > 0 && (block.number - leaseItem.createdAt) > (leaseItem.expiresIn * _blocksPerDay)) {
                leasingTokens[i] = leasingTokens[leasingTokens.length - 1];
                delete leasingTokens[leasingTokens.length - 1];
            }
        }

        return leasingTokens;
    }

    function trasferWeth(address from, address to, uint256 amount) public returns(bool) {
        return _weth.transferFrom(from, to, amount);
    }

    function approveLeaseOffer(uint256 _tokenId, address _from) nonReentrant external onlyOwnerOf(_tokenId) {
        LeaseOffer[] memory tokenLeaseOffers = leaseOffers[_tokenId];

        for(uint256 i = 0; i < tokenLeaseOffers.length; i++) {
            if(tokenLeaseOffers[i].from == _from) {
                (address royaltyReceiver, uint256 roaltyAmount) = getRoalityInfo(_tokenId, tokenLeaseOffers[i].price);

                // transfer WETH from lease offer maker to the owner
                bool success1 = trasferWeth(_from, address(_nft.ownerOf(_tokenId)), (tokenLeaseOffers[i].price * 9) / 10);
                require(success1, "Failed to Pay Royalty fee");
                // transfer royalty fee from lease offer maker to royalty receiver
                bool success2 = trasferWeth(_from, royaltyReceiver, roaltyAmount);
                require(success2, "Failed to Pay Royalty fee");
                
                tokenLeaseOffers[i].createdAt = block.number;
                _lease[_tokenId] = tokenLeaseOffers[i];
                leaseOffers[_tokenId][i] = leaseOffers[_tokenId][leaseOffers[_tokenId].length -1];
                leaseOffers[_tokenId].pop();

                _addrToLeasingTokens[_from].push(_tokenId);

                emit ApproveLeasing(_tokenId);
                break;
            }
        }
        _offerState[_tokenId][_from] = false;
    }

    function calcenLeaseOffer(uint256 _tokenId) nonReentrant external {
        require(_nft.ownerOf(_tokenId) != msg.sender, "You can't buy yours.");
        require(_nft.ownerOf(_tokenId) != address(0), "You can't send offer no-owner token");
        LeaseOffer[] memory tokenLeaseOffers = leaseOffers[_tokenId];

        for(uint256 i = 0; i < tokenLeaseOffers.length; i++) {
            if(tokenLeaseOffers[i].from == msg.sender) {
                leaseOffers[_tokenId][i] = leaseOffers[_tokenId][leaseOffers[_tokenId].length - 1];
                leaseOffers[_tokenId].pop();

                emit ApproveLeasing(_tokenId);
                break;
            }
        }

        _offerState[_tokenId][msg.sender] = false;
    }

    function sendLeaseOffer(uint256 _tokenId, uint256 _amount, uint32 _expiresIn) nonReentrant public payable {
        require(_nft.ownerOf(_tokenId) != msg.sender, "You can't buy yours.");
        require(_nft.ownerOf(_tokenId) != address(0), "You can't send offer no-owner token");
        require(_amount >= _nft.getTierPrice(_nft.getTierNumberOf(_tokenId)) / 10, "Amount of ether sent is not correct.");
        require(_weth.balanceOf(msg.sender) >= _amount, "You don't have enough WETH.");
        require(_expiresIn >= 30, "The minimum to lease the membership is 30 days.");
        require(_offerState[_tokenId][msg.sender] != true, "You can't send mutli offer");
        leaseOffers[_tokenId].push(LeaseOffer(msg.sender, _amount, _expiresIn, block.number));
        _offerState[_tokenId][msg.sender] = true;
    }

    function lease(uint256 _tokenId, uint32 _expiresIn) nonReentrant external payable {
        require(_nft.ownerOf(_tokenId) != msg.sender, "You can't buy yours.");
        require(leasable[_tokenId], "Token is not public");
        require(_nft.ownerOf(_tokenId) != address(0), "You can't send offer no-owner token");
        require(msg.value >= _nft.getTierPrice(_nft.getTierNumberOf(_tokenId)) / 10, "Amount of ether sent is not correct.");

        (address royaltyReceiver, uint256 roaltyAmount) = getRoalityInfo(_tokenId, msg.value);
        address payable _royaltyReceiver = payable(royaltyReceiver);
        (bool success1, ) = _royaltyReceiver.call{ value: roaltyAmount }("");
        require(success1, "Failed to Pay Royalty fee");

        _lease[_tokenId] = LeaseOffer(msg.sender, msg.value, _expiresIn, block.number);
        leasable[_tokenId] = false;
        _leasedTokens.push(_tokenId);

        for(uint256 i = 0; i < _leasableTokens.length; i++) {
            if (_leasableTokens[i].tokenId == _tokenId) {
                _leasableTokens[i] = _leasableTokens[_leasableTokens.length - 1];
                _leasableTokens.pop();
                break;
            }
        }
    }
}

File 2 of 16 : EnumerableSet.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/structs/EnumerableSet.sol)

pragma solidity ^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;

            if (lastIndex != toDeleteIndex) {
                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] = valueIndex; // Replace lastvalue's index to valueIndex
            }

            // 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) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // 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);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        return _values(set._inner);
    }

    // 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))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        assembly {
            result := store
        }

        return result;
    }

    // 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));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        assembly {
            result := store
        }

        return result;
    }
}

File 3 of 16 : SafeMath.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol)

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

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

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

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

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

File 4 of 16 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^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 5 of 16 : ERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 6 of 16 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

File 7 of 16 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

File 8 of 16 : IERC721.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/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 9 of 16 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)

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 `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

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

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

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

    /**
     * @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 10 of 16 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

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 making 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 11 of 16 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/IERC20.sol";

File 12 of 16 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

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

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

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

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

    /**
     * @dev 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 {
        _transferOwnership(address(0));
    }

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

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

File 13 of 16 : IAccessControlEnumerable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable is IAccessControl {
    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

File 14 of 16 : IAccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

File 15 of 16 : AccessControlEnumerable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "./IAccessControlEnumerable.sol";
import "./AccessControl.sol";
import "../utils/structs/EnumerableSet.sol";

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view virtual override returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {_grantRole} to track enumerable memberships
     */
    function _grantRole(bytes32 role, address account) internal virtual override {
        super._grantRole(role, account);
        _roleMembers[role].add(account);
    }

    /**
     * @dev Overload {_revokeRole} to track enumerable memberships
     */
    function _revokeRole(bytes32 role, address account) internal virtual override {
        super._revokeRole(role, account);
        _roleMembers[role].remove(account);
    }
}

File 16 of 16 : AccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

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

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ApproveLeasing","type":"event"},{"anonymous":false,"inputs":[],"name":"LogCanceled","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"withdrawer","type":"address"},{"indexed":true,"internalType":"address","name":"withdrawalAccount","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"LogWithdrawal","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"address","name":"_from","type":"address"}],"name":"approveLeaseOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"calcenLeaseOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"cancelTokenLeasable","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getBlocksPerDay","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"getLeasable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"getLeasableToken","outputs":[{"components":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"uint32","name":"duration","type":"uint32"}],"internalType":"struct Leasing.LeasableToken","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getLeasableTokens","outputs":[{"components":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"uint32","name":"duration","type":"uint32"}],"internalType":"struct Leasing.LeasableToken[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"getLease","outputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"uint32","name":"expiresIn","type":"uint32"},{"internalType":"uint256","name":"createdAt","type":"uint256"}],"internalType":"struct Leasing.LeaseOffer","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"getLeaseOffers","outputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"uint32","name":"expiresIn","type":"uint32"},{"internalType":"uint256","name":"createdAt","type":"uint256"}],"internalType":"struct Leasing.LeaseOffer[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getLeasedTokens","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"getLeasingTokens","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getNFTAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRefundFee","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"uint256","name":"_salePrice","type":"uint256"}],"name":"getRoalityInfo","outputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRoleMember","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleMemberCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"uint32","name":"_expiresIn","type":"uint32"}],"name":"lease","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint32","name":"_expiresIn","type":"uint32"}],"name":"sendLeaseOffer","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_blocks","type":"uint16"}],"name":"setBlocksPerDay","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nft_address","type":"address"}],"name":"setNFTAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint8","name":"fee","type":"uint8"}],"name":"setRefundFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint96","name":"feeNumerator","type":"uint96"}],"name":"setRoality","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"uint256","name":"_price","type":"uint256"},{"internalType":"uint32","name":"_duration","type":"uint32"}],"name":"setTokenLeasable","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"trasferWeth","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"uint256","name":"_price","type":"uint256"},{"internalType":"uint32","name":"_duration","type":"uint32"}],"name":"updateLeasableToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withDraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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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.