> For the complete documentation index, see [llms.txt](https://david-oh.gitbook.io/insta-land/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://david-oh.gitbook.io/insta-land/introduce/4.-land-and-asset-nfts-non-fungible-tokens.md).

# 4. LAND and Asset NFTs (Non-Fungible Tokens)

Insta#LAND utilizes smart contracts on Ethereum to maintain ownership of virtual lands in the virtual world of the platform. This asset category is called LAND, and assets published on LAND, such as Estates, Routes, and Contents, are classified as Asset NFTs.

Each LAND property corresponds to a unique place name and has unique characteristics, making it unique in the world. Ownership of LAND can be acquired by purchasing it with MARBLE, an ERC20 token, and ownership is proven through the smart contract's consensus layer.

<figure><img src="/files/SvNmCGgkvXE2c0NiRzpv" alt=""><figcaption></figcaption></figure>

Globe Map - LAND - Estate, Route, Contents have a symmetrical structure with Map Layer - Consensus Layer - Contents Layers. This layer structure is a structural copy of the real-world globe map - land territory - travel destination, travel route, and travel product formats and layers, and is an important modeling for real world virtualization.

LAND and Asset NFTs serve as the basic foundation for ecosystem participants to prove and secure copyright and ownership of travel contents by using the characteristics of non-fungible tokens on the Ethereum blockchain.

LAND is the basis of Asset NFT, has the uniqueness of matching with specific places in travel destinations around the world, and can be purchased, resold, or leased through auctions.

Asset NFTs are published on LAND, and the published Estate, Route, and Contents are not unique. Asset NFT has a structure that simulates the real world and describes and explains travel destinations in the virtual world. It becomes the basis.