Mumbai Testnet

Contract

0x8Eae63C3D13C615420F14D0C57425A4cf5C442b3

Overview

MATIC Balance

Polygon PoS Chain LogoPolygon PoS Chain LogoPolygon PoS Chain Logo0 MATIC

Token Holdings

Multichain Info

N/A
Transaction Hash
Method
Block
From
To
Value
List Market Item290816922022-11-10 16:06:49504 days ago1668096409IN
0x8Eae63C3...cf5C442b3
0.01 MATIC0.000261821.50000001
List Market Item274223772022-08-01 2:17:46606 days ago1659320266IN
0x8Eae63C3...cf5C442b3
0.01 MATIC0.0067541230.23050054
0x60806040198399402021-10-06 14:25:01904 days ago1633530301IN
 Create: Marketplace
0 MATIC0.003099953

Latest 1 internal transaction

Parent Txn Hash Block From To Value
274223772022-08-01 2:17:46606 days ago1659320266
0x8Eae63C3...cf5C442b3
0.01 MATIC
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Contract Source Code Verified (Exact Match)

Contract Name:
Marketplace

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 3 : Marketplace.sol
// SPDX-License-Identifier: Unlicensed

pragma solidity 0.8.4;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
// import "hardhat/console.sol";

contract Marketplace {
    uint256 public itemCounter;
    address payable owner;
    uint256 public listingPrice;

    struct MarketItem {
        uint256 itemId;
        address nftContractAddress;
        uint256 tokenId;
        address payable seller;
        address owner;
        uint256 price;
        bool isSold;
        bool isPresent;
    }

    mapping(uint256 => MarketItem) private marketItems;

    event MarketItemListed(
        uint256 indexed itemId,
        address indexed nftContractAddress,
        uint256 indexed tokenId,
        address seller,
        address owner,
        uint256 price
    );

    constructor() {
        itemCounter = 0;
        owner = payable(msg.sender);
        listingPrice = 0.01 ether;
    }

    function listMarketItem(
        address nftContractAddress,
        uint256 tokenId,
        uint256 price
    ) public payable {
        require(msg.value == listingPrice, "Must pay the listing price");
        require(price > 0, "Price must be greater than 0");

        marketItems[itemCounter] = MarketItem(
            itemCounter,
            nftContractAddress,
            tokenId,
            payable(msg.sender),
            address(0),
            price,
            false,
            true
        );

        IERC721(nftContractAddress).transferFrom(
            msg.sender,
            address(this),
            tokenId
        );

        payable(owner).transfer(listingPrice);

        emit MarketItemListed(
            itemCounter,
            nftContractAddress,
            tokenId,
            msg.sender,
            address(0),
            price
        );

        itemCounter += 1;
    }

    function buyMarketItem(uint256 itemId) public payable {
        require(marketItems[itemId].isPresent, "Item is not present");
        require(marketItems[itemId].isSold == false, "Item is already sold");
        require(
            marketItems[itemId].price == msg.value,
            "Must pay the correct price"
        );

        marketItems[itemId].isSold = true;
        marketItems[itemId].owner = payable(msg.sender);

        IERC721(marketItems[itemId].nftContractAddress).transferFrom(
            address(this),
            msg.sender,
            marketItems[itemId].tokenId
        );

        // console.log("NFT with itemId ", itemId, "is sold to ", msg.sender);
    }

    function getMarketItem(uint256 itemId)
        public
        view
        returns (MarketItem memory items)
    {
        items = marketItems[itemId];
    }

    function changeListingPrice(uint256 newPrice) public {
        require(newPrice > 0, "Listing Price must be greater than 0");
        require(
            msg.sender == owner,
            "Only the owner can change the listing price"
        );

        listingPrice = newPrice;
    }
}

File 2 of 3 : IERC721.sol
// SPDX-License-Identifier: MIT

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 3 of 3 : IERC165.sol
// SPDX-License-Identifier: MIT

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);
}

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

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"itemId","type":"uint256"},{"indexed":true,"internalType":"address","name":"nftContractAddress","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"seller","type":"address"},{"indexed":false,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"price","type":"uint256"}],"name":"MarketItemListed","type":"event"},{"inputs":[{"internalType":"uint256","name":"itemId","type":"uint256"}],"name":"buyMarketItem","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newPrice","type":"uint256"}],"name":"changeListingPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"itemId","type":"uint256"}],"name":"getMarketItem","outputs":[{"components":[{"internalType":"uint256","name":"itemId","type":"uint256"},{"internalType":"address","name":"nftContractAddress","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address payable","name":"seller","type":"address"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"bool","name":"isSold","type":"bool"},{"internalType":"bool","name":"isPresent","type":"bool"}],"internalType":"struct Marketplace.MarketItem","name":"items","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"itemCounter","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"nftContractAddress","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"price","type":"uint256"}],"name":"listMarketItem","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"listingPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

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Deployed Bytecode

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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.