# Market Contract ## Address > Address : (not yet deployed) > > on Klaytn Blockchain Main-net ## Summary > **Market contracts define the rules for secondary trading of Collection Items provided to Otherworld.** * Defines the maximum number of valid days that can be set on 'List' and 'Offer'. * Defines the maximum number of valid days that can be set on 'List' and 'Offer'. * Defines the maximum amount that can be set in the ‘list’. * Defines the 'list' details. * Defines the collection to which the list item belongs. * Defines the list items. * Defines the quantity of the list item. * Defines the currency to use for transactions. * Defines list prices. * Defines the list validity period. * Defines the seller. * Defines designated buyers. * Defines the list status. * Defines the 'offer' details. * Defines the collection to which the offer item belongs. * Defines the offer items. * Defines the quantity of the offer item. * Defines the currency to use for transactions. * Defines the offer price. * Defines the offer validity period. * Defines buyers. * Define offer status. ## Data ### Base

Name	Type
Max Expiration Day	Uint
Max Offer Count	Uint
Max List Price	Uint
Created Timestamp	Uint

### List

Name	Type
ID	Uint
Collection ID	Uint
Token ID	Uint
Quantity	Uint
Currency ID	Uint
Price	Uint
Expiration Timestamp	Uint
Seller	Address
Specific Buyer	Address
State	Uint
Created Timestamp	Uint

### Offer

Name	Type
ID	Uint
Collection ID	Uint
Token ID	Uint
Quantity	Uint
Currency ID	Uint
Price	Uint
Expiration Timestamp	Uint
Buyer	Address
State	Uint
Created Timestamp	Uint

## Event ### Listed

Name	Type
Collection ID	Uint
Token ID	Uint
Seller	Address
Token Contract	Address
List ID	Uint

### Offered

Name	Type
Collection ID	Uint
Token ID	Uint
Buyer	Address
Token Contract	Address
Offer ID	Uint

### List Canceled

Name	Type
Collection ID	Uint
Token ID	Uint
Seller	Address
List ID	Uint

### Offer Canceled

Name	Type
Collection ID	Uint
Token ID	Uint
Buyer	Address
Offer ID	Uint

### Sale

Name	Type
Collection ID	Uint
Token ID	Uint
Seller	Address
Buyer	Address
Token Contract	Address
List ID	Uint

### Royalty Invoice

Name	Type
Collection ID	Uint
Token ID	Uint
List ID	Uint
Royalty	Uint
Provider	Address
To Provider	Uint
Operator	Address
To Operator	Uint
Associator	Address
To Associator	Uint
Creator	Address
To Creator	Uint
DAO	Address
To DAO	Uint

## Interface {% tabs %} {% tab title="IOWMarket" %} ```solidity interface IOWMarket { function list( uint256 _collectionId, uint256 _tokenId, uint256 _quantity, uint256 _currencyId, uint256 _price, uint16 _expirationDay, address _specificBuyer ) external; function listOfAdmin( uint256 _collectionId, uint256 _tokenId, uint256 _quantity, uint256 _currencyId, uint256 _price, uint16 _expirationDay, address _seller, address _specificBuyer ) external; function cancelList(uint256 _listId) external; function cancelLists(uint256[] memory _listIds) external; function isListing(uint256 _listId) external view returns (bool); function isTokenListing( address _seller, uint256 _collectionId, uint256 _tokenId ) external view returns (bool); function isExistListById(uint256 _listId) external view returns (bool); function getListById(uint256 _listId) external view returns (MarketBase.List memory); function offer( uint256 _collectionId, uint256 _tokenId, uint256 _quantity, uint256 _currencyId, uint256 _price, uint16 _expirationDay ) external payable; function offerOfAdmin( uint256 _collectionId, uint256 _tokenId, uint256 _quantity, uint256 _currencyId, uint256 _price, uint16 _expirationDay, address _buyer ) external payable; function cancelOffer(uint256 _offerId) external; function cancelOffers(uint256[] memory _offerIds) external; function isOffering(uint256 _offerId) external view returns (bool); function isExistOfferById(uint256 _offerId) external view returns (bool); function getOfferById(uint256 _offerId) external view returns (MarketBase.Offer memory); function buy(uint256 _listId) external payable; function sell(uint256 _offerId) external; function setMaxExpirationDay(uint16 _maxExpirationDay) external; function setMaxOfferCount(uint8 _maxOfferCount) external; function setMaxListPrice(uint256 _maxListPrice) external; function getMaxExpirationDay() external view returns (uint16); function getMaxOfferCount() external view returns (uint8); function getMaxListPrice() external view returns (uint256); } ``` {% endtab %} {% endtabs %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://otherworld-1.gitbook.io/protocol-1/smart-contracts/market-contract.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.