How to Create an NFT: A Step-by-Step Guide

NFTs burst onto the cryptocurrency scene in 2021, setting unprecedented sales records and introducing a myriad of collectibles like Bored Apes, CryptoKitties, and Pudgy Penguins. Creating NFTs has since become a mainstream endeavor, accessible to developers and artists alike.

In this blog post, we will delve into the fundamentals of crafting NFT art for sale. Additionally, we will delve into the technical intricacies of designing smart contracts, catering to those interested in a deeper engagement with NFTs.

NFTs Guide: Key Points

NFTs, or non-fungible tokens, are exclusive digital assets, each possessing unique value and ownership, guaranteed by blockchain technology.

• Non-fungible tokens, representing diverse content from visuals to real-world items, are powered and safeguarded by smart contracts.

• Crafting NFTs requires expertise in decentralized storage, selecting a suitable blockchain, establishing an NFT-compatible wallet, and opting for the right trading platform.

• Although Ethereum is the prominent blockchain for NFTs, alternatives like Polygon, Solana, BNB Chain, and ImmutableX offer excellent choices.

• While some NFT platforms enable easy creation and listing without coding skills, they offer limited control over smart contracts and storage.

• Advanced users can opt for custom smart contracts, ensuring superior control and transparency throughout the minting process.

Before delving into the specifics of creating NFT art, let's explore the distinctive traits of non-fungible tokens.

What are NFTs and Why Are They Valued?

The term 'non-fungible token,' abbreviated as NFT, provides a clear understanding of the concept. Essentially, it is a token issued on a blockchain that can be traded and transferred. However, unlike fungible tokens that can be exchanged without loss in value, each NFT is unique and cryptographically linked to its owner.
The convergence of artistry and code transforms digital assets into valuable possessions, primarily due to these key features:

• Scarcity: NFTs derive their value from being distinct from any other asset of the same kind, a uniqueness embedded within a smart contract registered on the blockchain.
• On-chain provenance: NFTs, supported by the blockchain, boast a permanent and easily verified record of their journey from one owner to another. While anyone can save an image or media content and put it up for sale on platforms like OpenSea, it holds no value without being able to authenticate its ownership.

NFTs can encompass various forms, including static images, visuals, audio, text content, or even real-world objects such as concert tickets, branded merchandise, or real estate rights.

How Non-Fungible Tokens Operate

NFTs stand out due to the underlying blockchain technology, a network that securely records information in an immutable manner, making alterations or forgeries impossible.

Smart contracts play a pivotal role, outlining predefined functions that dictate permissible actions related to NFTs. Upon selling the token, the contract triggers the registration of the buyer as the new owner. The code also includes links to the location where the image is stored.

Once the smart contract is initialized, the token is officially minted, settling on the blockchain, and becomes tradable and transferable. Every interaction with an NFT is governed by code rather than intermediaries, ensuring transparency and security in the process.

Related: What is a Smart Contract in Blockchain?

Creating an NFT: Preliminary Steps

If you have a vision you want to share with the world, great! If not, drawing inspiration from successful artists or even seeking help from AI can be incredibly motivating. Here are some essential steps to ensure a seamless experience for beginners venturing into the world of NFTs:

1. Secure Decentralized Storage:
For the longevity of your NFT content, opt for decentralized storage solutions like IPFS instead of conventional services such as Google Cloud or Amazon buckets. Store an actual image or file to generate an 'ipfs://' link and metadata in .js format, containing the visual link and a detailed description for your future NFT.

2. Choose the Right Blockchain:
Your choice of blockchain impacts the fees associated with transforming your digital art into NFTs. Consider the blockchain's existing audience eagerly anticipating new collections. Also, prioritize the reputation of the chain as a secure protocol. Ethereum stands out in this regard, accounting for over 80% of NFTs despite higher gas fees and slower processing.

3. Set Up an NFT Wallet:
Acquire an NFT-enabled crypto wallet compatible with your chosen blockchain. MetaMask is a popular choice among crypto enthusiasts. Ensure your wallet is funded with cryptocurrency in advance to cover gas fees for listing and trading your freshly minted non-fungible tokens.

Creating and Selling NFTs on OpenSea: A Beginner's Guide

For those venturing into the world of NFTs without a background in coding, platforms like OpenSea offer an accessible entry point. If you're keen on launching an NFT project armed only with your artwork and a MetaMask wallet, platforms like OpenSea, which provide minting services, are perfect for experimentation.

The process of crafting an NFT token on OpenSea is incredibly straightforward. All you need to do is link your wallet to the website. Once connected, you can create an entire collection or individual assets by filling out a simple form. Once this step is completed, you can proceed to list your digital asset by clicking 'List for Sale.'

A notable advantage of OpenSea is that it allows users to mint individual NFTs without incurring any service or gas fees. However, it's essential to note that network fees and platform commissions are applicable during the listing stage.

However, the ease of minting on OpenSea comes with a trade-off. By utilizing the platform's smart contracts, you relinquish control over the storage location of your files and data. Additionally, there are no guarantees regarding the security of these contracts, which is an important consideration.

Creating your own NFT smart contract

If you have some Solidity knowledge and want more control and transparency over your NFT creation process, you can create your own self-curated smart contracts. This method is recommended for advanced users.
To create non-fungible tokens (NFTs) for Ethereum, Polygon, or any other EVM-compatible chain, we will use the OpenZeppelin library and Remix to compile and deploy our code to the blockchain. Additionally, GetBlock's Ethereum RPC endpoints will provide free access to blockchain data and nodes.
Here are the steps to create your own NFT smart contract:

1. Open the Contract Wizard by OpenZeppelin and select the ERC-721 option. Enter the name and symbol for your NFT.

2. Fill in the 'Base URI' field with an IPFS link that stores the metadata for your NFT in JavaScript format. Select the features you want for your asset.
   

3. Click the 'Open in Remix' button to transfer your contract to an online developer environment.

4. You can now modify the code and customize it according to your requirements. Typically, basic NFT contracts require some changes.
   Set the maximum supply and minting price:
   

Under the safeMint() function the following modifications are also needed:

Then, we should be able to withdraw funds from our contract by adding a function as shown below:

1. Go to the 'Solidity Compiler' section in the sidebar and ensure that the compiler version matches the one specified in the code. Compile the contract by saving the file or clicking the corresponding button.
   

2. Once the contract is finalized, it's ready for deployment. To ensure a smooth deployment process without using real ETH, we will use Ethereum's Sepolia testnet.
   To set GetBlock as the provider and connect to the blockchain where the NFT will be minted, follow these steps:

3. Create a GetBlock account and obtain a free endpoint for your desired network.

4. Add a new network to MetaMask using the acquired RPC link.
   

5. Switch to the 'Deploy & Run Transactions' section in the sidebar and configure the environment by selecting 'Injected Provider - MetaMask'. If the network you added in the previous step is active on MetaMask, Remix will connect automatically.
   Make sure your MetaMask account has sufficient funds to cover gas fees. If you're using a testnet, you can try using faucets to receive free test ethers for your on-chain experiments.

6. Click 'Deploy' and confirm the transaction from the MetaMask wallet extension.
   That's it! Your newly created NFT will be visible on your testnets.opensea.io account or on the main OpenSea website if you're using the mainnet.
   

Closing Remarks

In the digital era, NFTs present thrilling prospects for artists, developers, and creators. Emphasizing the quality and distinctiveness of your content is paramount, alongside staying abreast of the ever-changing NFT landscape and assessing the enduring value of your digital assets.
_Have you established your GetBlock account? With a single click using MetaMask, you can access the seamless and dependable blockchain infrastructure we provide. Whether you're a developer, entrepreneur, or blockchain enthusiast, GetBlock is committed to bolstering your endeavors every step of the way.
_

NFT Creation FAQ: Your Queries Answered

Here, you'll find responses to some of the most common questions beginners have about creating NFTs.
What are NFTs and why are they important?
NFTs, or non-fungible tokens, are unique tokens residing on the blockchain. They hold immense value as they introduce innovative ways to establish ownership of digital content, transforming the landscape for creators in the digital realm.

How do I create my own NFT?
Creating your first NFT is accessible to everyone, thanks to marketplaces that offer free minting services. While this method simplifies the process for beginners, advanced creators often prefer managing their own smart contracts, a more complex yet transparent approach.

How do I sell my NFT?
To sell your non-fungible token, it's crucial to select a reputable NFT marketplace. All you need is an account on your chosen platform and a cryptocurrency wallet to list your NFTs for sale effectively.

What are some best practices for creating NFTs?
In addition to producing high-quality, collectible content, it's essential to employ decentralized storage and adopt a robust strategy for marketing and securing your assets. These practices ensure the optimal creation and presentation of your NFTs in the digital space.