Ownership is a relation between NFT (Item) and a wallet (who owns the NFT)

You can find more information about the data model in the response section of respective API endpoint here.

Field	Type	Description
id	string	Ownership Id in format: '${blockchain}:${itemId}:${owner}'
blockchain	enum	ETHEREUM, POLYGON, FLOW etc
itemId	string	Item (NFT) id in format: '${blockchain}:${itemId}'
contract	string	contract id in format: '${blockchain}:${address}'
collection	string	collection id in format: '${blockchain}:${collectionId}'
tokenId	string	token id if applicable (not all blockchains have token id)
owner	union address	wallet address in Union format: '${blockchain}:${address}'
value	string (BigInteger)	amount of items owned by the owner
lazyValue	string (BigInteger)	amount of lazy items owned (creator owns lazy-minted items before they are sold)
createdAt	string (date-time)	Date and time of ownership created (when owner started to own this NFT)
lastUpdatedAt	string (date-time)	Date and time when Ownership was changed
bestSellOrder	object (Order)	Cheapest listing Order
bestBidOrder	object (Order)	Highest (most expensive) Bid for the NFT

* Fields marked with bold are required