> For the complete documentation index, see [llms.txt](https://otherworld-1.gitbook.io/protocol-1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://otherworld-1.gitbook.io/protocol-1/smart-contracts/market-contract.md).
# 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 %}