# Smart-Contracts

Core of our products is three smart contraсts:

### **Marketplace Contract**

Designed to support the operations of our marketplace. It facilitates both direct sales and auctions. Additionally, the contract deducts a percentage `N_TANPIN%` as a commission from each sale, directing it to the project development pool. 

Moreover, it empowers creators and game owners to embed royalties, earning a percentage `N_GAME_OWNER%` from each secondary market resale.

Our Marketplace contract facilitates decentralized and secure transactions, allowing users to buy, sell, and participate in auctions for NFTs.

### Other contracts

**ERC20** standard for Tanpin Token. Includes the permit. This function enhances the user experience by simplifying token approvals, providing a seamless process for transactions.

**ERC1155** standard for NFT, allowing us to work with both individual NFTs and entire groups. Examples of individual NFTs include unique vehicles, multiple in-game resources like trees and metals, etc. 

It also includes the implementation of a `total_supply` option. During the initial mint, total\_supply is set, serving as the maximum possible value for the issued NFTs.