10. Building a marketplace

We have all the necessary tools to create our first full-fledged project. Given the current state of the cryptocurrency industry, an NFT marketplace would be an ideal choice. Marketplaces are highly sought after as they provide equal access to digital collectibles such as art, in-game items, virtual vouchers, and more. Blockchains offer open membership ledgers, and marketplaces provide a platform to trade assets on these ledgers freely.

The following are some of the features: Tiny Market is a minimal implementation that enables people to trustlessly list NFTs for sale. An NFT offering includes the NFT for sale,

the block height at which the listing expires, the payment asset, the NFT price in the payment asset, and an optional intended taker.

If set, only the principal mentioned will be able to fulfill the listing. This feature is useful if someone has found a buyer outside of the platform and wants to conduct a trade with just that person in a trustless manner.

The listing process does not involve any bidding or other complications. To create a listing, call the marketplace contract with the above information, and the contract will transfer the NFT and hold it in escrow for the duration of the listing. The seller has the option to cancel the listing and retrieve the NFT at any time. If a buyer decides to purchase the NFT, the marketplace will automatically process the payment and transfer the NFT. After a listing has expired, only the seller can retrieve the NFT from the marketplace.