NFTs - Non-Fungible Tokens

From digital art to real estate, Non-Fungible Tokens (NFTs) are being used to represent a wide range of unique assets. Discover the world of NFTs and how they work.

Feb 14, 2023 - 15:15
Apr 24, 2023 - 13:24
NFTs - Non-Fungible Tokens
NFT - Non Fungible Token

What Is a Non-Fungible Token (NFT)?

Non-Fungible Tokens (NFTs) are unique digital assets that exist on a blockchain. Unlike traditional cryptocurrencies like Bitcoin, which are fungible (meaning that they can be exchanged for other units of equal value), NFTs are non-fungible. This means that each NFT is one-of-a-kind, with its own unique properties and characteristics.

NFTs are often used to represent digital art, collectibles, or other unique items that have value to their owners. The ownership of an NFT is recorded on a blockchain, making it a secure and transparent way to verify ownership.

One of the most notable features of NFTs is that they are permanent and immutable. Once an NFT is created, it cannot be changed or destroyed. This makes NFTs ideal for representing unique assets that need to be tracked and verified over time.

Key Takeaways:

     • NFTs are unique digital assets that exist on a blockchain. They are non-fungible, meaning that each NFT is one-of-a-kind.

     • NFTs are often used to represent digital art, collectibles, or other unique items that have value to their owners.

     • The ownership of an NFT is recorded on a blockchain, making it a secure and transparent way to verify ownership.

     • NFTs are permanent and immutable, which makes them ideal for representing unique assets that need to be tracked and verified over time.

     • The potential applications of NFTs are diverse and far-reaching, from digital art and collectibles to real estate and intellectual property.

History of Non-Fungible Tokens (NFTs)

The concept of Non-Fungible Tokens (NFTs) has been around for several years, but it wasn't until 2017 that they started to gain wider attention in the digital art world. The first NFT standard, called ERC-721, was introduced by the Ethereum blockchain in 2018. This standard established a set of rules for creating NFTs that are compatible with the Ethereum blockchain, allowing for easy creation and trading of NFTs.

One of the earliest examples of NFTs being used in a meaningful way was the game CryptoKitties, which was released in late 2017. In CryptoKitties, players could collect and breed virtual cats, each represented by a unique NFT. The game quickly became popular, with some rare CryptoKitties selling for tens of thousands of dollars.

In 2019, the digital artist Beeple began creating a series of NFT-based artworks, which he called "Everydays." Each day, he created a new digital artwork, which he sold as an NFT. In March 2021, Beeple sold a collection of his Everydays artworks for a record-breaking $69 million at a Christie's auction, solidifying NFTs as a viable and valuable asset class.

Since then, NFTs have exploded in popularity, with a wide range of applications beyond digital art. They are now being used to represent everything from collectibles and in-game items to real estate and intellectual property. Many high-profile celebrities and companies have also jumped on the NFT bandwagon, with everyone from Elon Musk to the NBA getting in on the action.

As the use cases for NFTs continue to expand and evolve, it will be interesting to see how they will shape the future of ownership and value in the digital world. With their unique properties and ties to blockchain technology, NFTs represent a new and exciting frontier in the world of digital assets.

How NFTs Work?

Non-Fungible Tokens (NFTs) are digital assets that are stored on a blockchain, just like cryptocurrencies such as Bitcoin and Ethereum. However, while cryptocurrencies are fungible and can be exchanged for other units of equal value, each NFT is unique and represents a specific item or asset.

NFTs work by leveraging the decentralized and transparent nature of the blockchain to verify ownership and track the authenticity of the asset they represent. When an NFT is created, it is assigned a unique identification number that is recorded on the blockchain, along with information about its ownership, history, and other relevant details.

This information is stored in a smart contract, which is a self-executing program that automatically enforces the terms of the NFT. The smart contract defines the rules for ownership, transfer, and use of the NFT, and ensures that these rules are followed by all parties involved.

When an NFT is sold or transferred, the ownership of the NFT is updated on the blockchain, and the new owner's information is recorded in the smart contract. This creates a permanent and transparent record of ownership that cannot be altered or deleted, ensuring that the NFT's authenticity and provenance can be verified at any time.

Blockchain and Fungibility

Cryptocurrencies, like physical money, are generally considered to be fungible financial assets. This means that they can be traded or exchanged for one another at a standardized value, similar to how each US dollar has an implicit exchange value of $1. For example, one Bitcoin can always be exchanged for another Bitcoin at a standardized value on a given cryptocurrency exchange. This fungibility characteristic makes cryptocurrencies a secure and efficient medium of transaction in the digital economy.

That's why, NFTs represent a significant shift in the world of cryptocurrency because they are designed to be unique and irreplaceable. Unlike fungible assets such as cryptocurrencies, each non-fungible token is distinct and cannot be exchanged for another NFT of equal value. NFTs are digital representations of assets and have been compared to digital passports because each token has a unique and non-transferable identity that distinguishes it from all other tokens. Additionally, NFTs are extensible, meaning that two or more NFTs can be combined to create a new, unique NFT. This unique and innovative approach to digital asset ownership has opened up a world of possibilities for creators, collectors, and investors alike.

The market for NFTs initially focused on digital art and collectibles. However, it has expanded to encompass a much broader range of digital assets. One example is the popular NFT marketplace OpenSea, which offers various NFT categories:

     1. Art: This is the most popular category, and it includes all forms of digital art such as paintings, animations, and GIFs.

     2. Music: In this category, musicians and artists can sell their music as NFTs, providing fans with a unique way to own and collect music.

     3. Domain Names: NFTs can be used to represent domain names, making it possible to buy and sell domain names on the blockchain.

     4. Virtual Real Estate: This category includes NFTs that represent virtual plots of land, allowing people to own and sell virtual real estate.

     5. Collectibles: This category includes a wide range of digital collectibles, including sports cards, game items, and other rare and unique items.

NFTs have also been used in the gaming industry, where they can represent in-game items or even characters. This has opened up new possibilities for game developers and players, allowing for unique and rare in-game items to be traded and sold on the blockchain.

What is the Benefits of Non-Fungible Tokens?

Non-Fungible Tokens (NFTs) offer several benefits, making them a valuable asset in the digital world. They provide a secure and transparent way to represent digital assets, enabling easy ownership and provenance tracking. NFTs also offer uniqueness and exclusivity, enhancing the value of digital assets. The decentralized nature of blockchain technology ensures the transparency and immutability of transactions, adding to the security of NFTs. Moreover, NFTs offer new revenue streams to creators and artists who can monetize their digital works as exclusive and valuable assets.

Can I invest in NFTs(Non-Fungible Tokens)?

Yes, you can invest in NFTs. NFTs have become an increasingly popular investment opportunity as the market for digital art and collectibles has grown. Some investors see NFTs as a way to diversify their portfolio and potentially benefit from the appreciation in value of unique and rare digital assets.

However, like any investment, there are risks involved, and it's essential to do your due diligence before investing in NFTs. The NFT market is still relatively new and can be volatile, with prices fluctuating rapidly. It's also important to be aware of potential scams, as the NFT market is still unregulated.

Before investing in NFTs, it's a good idea to educate yourself about the market and research the various platforms and marketplaces. You may also want to consult with a financial advisor or investment professional to help you make informed investment decisions.

How Can I Buy NFTs?

To buy NFTs, you need to follow a few simple steps. First, choose a marketplace that supports the blockchain network that the NFT is based on, such as OpenSea or Rarible. Next, create a digital wallet that supports the same blockchain network as the NFT. You will also need to fund your wallet with cryptocurrency, such as Ethereum. Then, search for the NFT you want to buy on the marketplace, and purchase it using your digital wallet. Finally, transfer the NFT to your digital wallet to hold and manage it.

Are NFTs Safe?

While NFTs are generally considered to be secure, there are certain risks involved with buying and selling them. Because NFTs are based on blockchain technology, they are susceptible to the same types of security vulnerabilities as other blockchain-based assets. It's important to choose reputable marketplaces and digital wallets, and to exercise caution when purchasing NFTs. Additionally, there is always the risk of fraud or scams when buying or selling any type of digital asset, so it's important to do your research and be vigilant. Overall, as long as you take the necessary precautions and educate yourself about the risks, NFTs can be a safe and secure investment.

What Does Non-Fungible Mean?

Fungibility refers to the interchangeable nature of goods, meaning that one item can be exchanged for another of the same kind. For example, if you had three dollar bills with identical designs, they would be considered fungible because they can be interchanged. When you tokenize one of those dollar bills, it becomes a unique and distinct asset, making it non-fungible. The other two dollar bills remain identical and interchangeable with each other. Non-fungible tokens or NFTs use this principle to create unique and distinguishable digital assets.

Where to create NFTs?

NFTs can be created using a variety of blockchain platforms, but the most popular platform for creating NFTs is the Ethereum blockchain. The Ethereum blockchain supports a standard called ERC-721, which defines the rules for creating non-fungible tokens. Other blockchain platforms, such as Binance Smart Chain and Flow, also support NFT creation and trading.


Non-fungible tokens (NFTs) represent an advancement in the concept of cryptocurrencies, which are a form of digital currency. Traditional finance systems include complex trading and lending systems for various types of assets, including real estate, lending contracts, and artwork. NFTs build upon this infrastructure by enabling the creation of digital representations of assets. This innovation has the potential to transform the financial industry and facilitate new forms of digital transactions.

To be sure, the concept of creating digital representations of physical assets and unique identification is not a new one, but when combined with a tamper-resistant blockchain, smart contracts, and automation, it becomes a powerful force for change. This combination has the potential to revolutionise various industries by facilitating secure, digital transactions. However, it is important to note that investing in cryptocurrencies and Initial Coin Offerings (ICOs) is highly speculative and risky. Before making any financial decisions, it is essential to seek the advice of a qualified professional, as each individual's situation is unique. Investopedia does not make any representations or warranties regarding the accuracy or timeliness of the information contained in this article.

Overall, NFTs are a new and innovative way to represent unique digital assets on a blockchain. By leveraging the security and transparency of the blockchain, NFTs are opening up a whole new world of possibilities for ownership and value in the digital realm.

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Sakib I am Sajedul Islam Sakib from Bangladesh. Currently, I am a student at AIUB studying computer science but I also like reading and learning new things, especially about Blogging and Education.