How to Create Free NFTs to Sell on OpenSea

Notorious, despite their popularity, non-fungible tokens, or simply “NFTs”, has become a fixture in social media debates. The articles are digital certificates, authenticated and stored on the blockchain, which guarantees integrity and transparency for all interested users. While its uses can be varied, extending to residential contracts, its popularity has been achieved through digital art auctions.

However, it is rarely mentioned Steps to create an NFT, which leads to the fallacy that the process will be complex and inaccessible. In order to solve this question, tech world A guide has been prepared to help more inexperienced users interested in this technology. Check!


Before getting started, it is important to point out some basic requirements for performing the process.Considering that the user has defined a media lie (a term derived from “mint”, similar to “minting” in Portuguese), there will only be:

  1. Choose a platform
  2. Set Preferred Blockchain
  3. Have a cryptocurrency wallet that supports the chosen platform
  4. If done in Ethereum, have some cryptocurrency balance to fund the process. In this case, we will be using the Polygon blockchain, which allows us to create NFTs for free, but OpenSea will charge a fee if a sale is made.

Install a cryptocurrency wallet

This crypto wallet Is a digital address capable of holding both cryptocurrencies and tokens or NFTs.Although niche services embrace many alternatives, metamask Often the user’s first choice.

MetaMask digital wallet interface. Source: Metamask

To use it, simply visit its official website and download it on one of the supported platforms: Android, iOS and web browsers – including Chrome, Edge, Firefox and Brave. After installation, simply create a MetaMask account and proceed to the next step.

Choose a platform

If the user’s ultimate goal is Sell ​​NFTsyou should choose the platform according to your situation Liquidity and number of active users. In these standards, the emphasis is on open sea, rare and Base, Popular and has an ideal level of support for updates and features.

Taking these factors into consideration, this tutorial will use open sea For example, the most famous in the niche – in which, there is a 2.5% usage fee per transaction And supports different blockchains. However, it is worth mentioning that the process is similar in other alternatives.

OpenSea, which dominated last year, has faced stiff competition from LooksRare. OpenSea, which dominated last year, has faced stiff competition from LooksRare. Source: The Block

Alternatively, for users who want to try competing platforms, a good practice is to check the fees charged and features offered, as this will affect the rest of the sales process.

Create NFTs on the high seas

Before creating an NFT on OpenSea, you need to “register” on your trading platform. The process is simple and requires only authorization from the user’s cryptocurrency wallet, which will be used to provide funds used in transactions and store purchased works.

1- Register an account on the trading platform

To register, just click profile icon, in the upper right corner of the home page. Next, choose your preferred wallet and authorize access. See it step by step in the image below:

Adriano Camagno/CopySteps to create an account on the OpenSea platform.

Users will be able to customize their profiles on the platform with personal information, photos and demo banners, as well as display names and links to their social networks.

2- Create NFT Collection

Once registered, the next step is to create a Collection of NFTs, whether subject or not. To get started, just hover over the profile icon and select “My Favorites,” then “Create Favorites.”

The process is similar to creating a profile on a social network, with the main difference being the final must define a Creator commission percentage Under every transaction involving collections – including purchases and resale of items. Also, it needs to be informed on which blockchain the transaction will take place, and the type of cryptocurrencies accepted.

In short, the network can be chosen Ethereum and Polygon at OpenSea.The first is widely used by users, but the required rate of operations may be high and not feasible – known as “gas bill”.

on the other hand, polygon it’s free and fast, but it still doesn’t have a huge adoption rate and may affect the speed of sales. After all, if the token is mined on the Polygon blockchain, it can only be sold to Polygon users.

See the step-by-step instructions in the image below:

Adriano Camagno/CopySteps to create an NFT collection.

3- Publish NFT

Once all the requirements have been completed, the NFT can be issued.To do this, click Shortcut “create”, located in the upper right corner of the interface. The next screen is very similar to the one in the previous topic, but simplified.

In it, you must define the project or program set to publish, as well as a title, external links, and description. Going forward, it will be necessary to choose which collections the publication will be used for, as well as some special and optional properties – such as stats, progress bars, and what buyers can unlock. These adjustments can be made intuitively and are described in detail to assist users.

Finally, just select the number of available projects, the target blockchain, and click Create.At the end of the process, users will have access to a statistics page about published NFTs, while allowing their listed for sale. If you wish to do this, you must select the “Sell” option, set the price in the preferred cryptocurrency and authorize the transaction in the digital wallet.

See the process in the image below:

    Sell ​​NFTsPublishing and listing NFTs for sale.

4- Results

Therefore, users will have access to their NFTs and purchase offers. To aid the process, it is recommended to promote the project through social networks and online publications. In practice, see an example at this link.

NFT tests listed on OpenSea. NFT tests listed on OpenSea. Source: Adriano Camacho, OpenSea

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