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NFTs: What They Are, How They Work and Is It Worth Investing in 2025?

Complete guide about NFTs: understand the concept, functionality, main platforms, available types, benefits, limitations and investment analysis.

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NFTs are unique digital records on blockchain that prove exclusive ownership of an item, such as art, music, video or other digital collectibles. This technology revolutionized the concept of ownership in the digital world, establishing authentic scarcity in an environment traditionally characterized by ease of reproduction.

What Are NFTs?

An NFT, or non-fungible token, is an exclusive digital asset that attests to the ownership of an item, such as art, music or video, recorded on a blockchain. Its non-fungible nature means that each token is unique and irreplaceable, preventing one-to-one exchange.

Unlike traditional currencies or cryptocurrencies, each token in this category is unique and cannot be substituted for another. This uniqueness is guaranteed by a unique identifier code and specific metadata recorded on the blockchain, making the asset verifiable and immutable.

NFT stands for Non Fungible Tokens. The term "non-fungible" means that each token is unique, unable to be copied, substituted or exchanged for an identical unit. This characteristic is what allows them to authenticate the originality and ownership of digital goods.

Fundamental Characteristics of NFTs

NFTs possess four distinctive characteristics that differentiate them from other digital assets:

Uniqueness: Each NFT has a unique identifier on the blockchain that differentiates it from any other token, even if they represent similar items. This allows digital tokens to be bought, sold and traded, establishing authenticity and scarcity in the digital world.

Indivisibility: Unlike cryptocurrencies that can be divided into fractions, NFTs are complete assets that cannot be fragmented. You either own the entire token or nothing at all.

Verifiability: The entire ownership and transaction history of an NFT is permanently recorded on the blockchain, allowing verification of the asset's authenticity and provenance at any time.

Transferability: NFTs can be sold, bought, transferred or even loaned between digital wallets, always maintaining transparent ownership records.

What Are NFTs Used For?

NFTs serve as a digital certificate of authenticity for unique items, allowing creators to tokenize assets such as artworks, videos and digital collectibles. They establish and prove ownership transparently in the digital environment.

Each NFT is protected by blockchain technology, ensuring that only one official owner exists and that the ownership record cannot be altered or copied. This exclusivity opens new monetization opportunities for digital assets, creating a robust market for creators and collectors.

The technology allows artists, musicians, content creators and developers to monetize their work in innovative ways, establishing direct connections with their audience and eliminating traditional intermediaries.

How NFTs Work in Practice

NFTs are created through a minting process in a blockchain environment, an immutable ledger. Digital file information and smart contracts, which are digital agreements, are recorded to ensure the authenticity and ownership of the asset, guaranteeing exclusivity.

These tokens operate on networks like Ethereum, following standards like ERC-721 for unique items and ERC-1155 for collections. It's worth noting that, due to file sizes, NFTs generally reference data stored in decentralized systems, not the digital file itself.

Creation and Trading Process

To buy NFTs, you need a compatible digital wallet and cryptocurrencies, such as Ether (ETH), used for transactions and fees. This infrastructure is fundamental to Web3, the next generation of the decentralized internet.

NFT trading occurs on dedicated online marketplaces, where users list and negotiate tokens. This decentralized system facilitates direct interaction between creators and collectors, eliminating traditional intermediaries.

NFT functionality is based on a combination of blockchain, smart contracts and other information and communication technology elements. This results in a secure digital ecosystem for unique assets, enabling 24/7 global transactions.

Main NFT Platforms

There are various platforms for NFT trading focused on different audiences and types of digital content. Understanding the characteristics of each marketplace is essential for choosing where to buy, sell or create your first tokens.

OpenSea: Popular NFT marketplace, functions as an open market where anyone can mint and sell digital assets, such as art, music, game items and collectibles. It's considered the "eBay of NFTs" for its breadth and ease of use.

Rarible: Decentralized platform that allows creation, sale and purchase of NFTs, mainly focused on digital artwork rights. Offers community governance through its RARI token.

SuperRare: A more exclusive NFT gallery, with specialized curation. To list a token, artists need to be invited or receive approval after application. Focused on high-quality digital art.

LooksRare: Marketplace that differentiates itself by rewarding users for participating in the platform with its native token, creating additional incentives for active traders.

Magic Eden: One of the main NFT marketplaces on the Solana blockchain, offering a vast gallery of digital collectibles and games with lower fees than Ethereum-based platforms.

Foundation: Premium platform focused on high-quality digital art, operating by invitation system. Known for hosting works by established and emerging artists with commercial potential.

Nifty Gateway: Known for offering NFT collections from renowned artists, including multimedia works, videos and animations. Generally visited by collectors of digital artworks with appreciation potential.

NBA Top Shot: Platform specialized in iconic moments and plays by athletes and teams from the North American basketball league in collectible video format, demonstrating how NFTs can tokenize sports experiences.

Main Types of Available NFTs

The NFT market encompasses an impressive diversity of categories, each with its specific characteristics and audiences:

Digital Art: Exclusive digital artworks, such as images, animations, GIFs and videos. This category includes everything from generative art created by algorithms to carefully crafted pieces by recognized digital artists.

Virtual Collectibles: Rare and unique digital items, such as virtual cards, stickers and exclusive accessories for avatars or game characters. They function as digital versions of traditional collectible cards.

Music and Music Videos: Exclusive or limited edition musical and video content, allowing artists to offer rare tracks, exclusive albums and unique experiences to fans. Many musicians use NFTs to develop more direct engagement strategies with their audience.

Game Items: Weapons, skins, characters and other video game assets that can be traded between players in a decentralized manner, creating genuine virtual economies.

Photography: Photographers can tokenize their images, enabling the sale of digital ownership of their works to collectors. This includes everything from artistic photography to unique historical records.

Tickets and Passes: NFTs can function as tickets for events, shows or conferences, offering authenticity and traceability, plus possible additional benefits like access to exclusive content.

Virtual Real Estate: Land, properties and buildings in virtual worlds and metaverses, which can be bought, sold and developed. Platforms like Decentraland and The Sandbox popularized this segment.

Social Media: Viral content like memes and original tweets can be tokenized, transforming brief publications into collectible digital assets. The famous "just setting up my twttr" tweet by Twitter's founder was sold for millions.

Domain Names: Decentralized domain names, like .eth or .crypto, which offer secure and private digital ownership over online identities, functioning as permanent addresses in Web3.

Benefits of NFTs

NFTs offer significant advantages that explain their exponential growth in the digital market:

Transparent Ownership Proof: NFTs are recorded on blockchain, guaranteeing that each digital asset is unique and proving ownership transparently and immutably. This minimizes fraud and counterfeiting, creating trust in the digital market.

Authentic Digital Scarcity: Unlike other tokens, each NFT is singular and irreplaceable. This makes them suitable for representing rare digital items, such as collectibles, artworks and game items, establishing value through verifiable scarcity.

Creator Empowerment: Artists and creators have more control over their works, establish direct connections with the public and access new revenue sources, such as automatic royalties on future resales.

Creative Freedom and Innovation: NFTs allow creators to experiment with new formats and business models, expanding the boundaries of digital art and intellectual property. This includes interactive works, generative art and multimedia experiences.

Community Building: NFTs can grant access to exclusive content, VIP experiences or closed groups. This creates engaged communities where creators interact directly with fans, similar to principles of building authentic relationships.

Decentralization and Global Accessibility: The NFT market is global and accessible to anyone with internet connection. This eliminates traditional intermediaries and democratizes access to art and collectibles.

Interoperability: NFTs can function across different platforms and applications, allowing a game item to be used in multiple games or digital art to be displayed in various virtual galleries.

Limitations and Challenges of NFTs

Despite the positive aspects, there are important limitations that should be considered:

Extreme Market Instability: NFT prices can be extremely volatile, resulting in substantial gains or losses in short periods. This volatility makes the market unsuitable for conservative investors.

Technological Complexity: The need for knowledge in cryptocurrencies, digital wallets and blockchain can hinder mass adoption of NFTs, creating entry barriers for less technical users.

Storage Issues: NFTs themselves don't store the artwork, but rather a link to it, which can lead to loss of access if the server hosting the content goes offline. This raises questions about asset permanence.

Lack of Regulation: The absence of regulatory bodies makes the market vulnerable to scams, such as fake assets, fraudulent projects and phishing attacks, requiring thorough research by buyers.

Legal Challenges: NFTs don't fully protect against copyright violations or legal disputes. The lack of regulation can make smart contract enforcement difficult in different jurisdictions.

Environmental Impact: Dependence on energy-intensive blockchains for minting and trading NFTs raises serious environmental concerns due to carbon emissions, especially on networks like Ethereum (although this is changing with technological updates).

Excessive Speculation: Many NFTs are bought purely for speculation, creating price bubbles that may not reflect the real value of the digital asset.

How to Invest in NFTs: Complete Guide

Initial Preparation

Before investing in NFTs, it's essential to establish a solid foundation of knowledge and technical infrastructure:

Education: Fully understand how blockchain technology and smart contracts work. Books like "The Bitcoin Standard: The Decentralized Alternative to Central Banking" offer excellent foundation on decentralized technologies.

Wallet Setup: Choose a reliable digital wallet like MetaMask, Trust Wallet or Coinbase Wallet. Properly configure your private keys and implement robust security measures.

Cryptocurrency Acquisition: Buy Ethereum (ETH) or other cryptocurrencies accepted in marketplaces through regulated exchanges like Binance, Coinbase or local exchanges.

Research and Selection Strategies

Creator Analysis: Investigate the history and reputation of artists or projects. Established creators with active communities tend to maintain value better.

Utility Verification: Evaluate whether the NFT offers benefits beyond speculative value, such as access to communities, games or exclusive experiences.

Market Analysis: Examine trading volume, historical prices and specific collection trends. Use tools like DappRadar and NonFungible for market data.

Community Assessment: NFTs with engaged and active communities on social networks generally maintain value better long-term.

Financial Considerations

Risk Management: Never invest more than you can afford to lose. NFTs are high-risk investments that can lose all value quickly.

Diversification: If you decide to invest in NFTs, keep them as a small percentage of your total portfolio, following diversification principles similar to those applied in traditional digital currency investments.

Hidden Costs: Consider transaction fees (gas fees), platform commissions and possible royalties on future sales.

Differences Between NFTs and Other Digital Assets

NFTs vs Fungible Tokens

Non-fungible tokens represent unique and irreplaceable assets. Each NFT has distinct characteristics that differentiate it from any other, conferring an exclusive identity and preventing one-to-one exchange for another token of the same type.

Fungible tokens are interchangeable, meaning each unit is identical to another and can be exchanged without value change. This occurs with traditional currencies or cryptocurrencies like Bitcoin.

NFTs vs Cryptocurrencies

NFTs are exclusive digital assets that represent ownership of a specific item, whether it's digital artwork, a game item or collectible. Being a non-fungible token, they are unique and irreplaceable.

Cryptocurrencies are decentralized digital currencies designed to be used as a medium of exchange for financial transactions and investments in blockchain environments. Each unit of a cryptocurrency is identical and can be exchanged for another, making them fungible.

Investment Viability Analysis

Return Potential

Some NFTs have experienced extraordinary appreciation. Collections like CryptoPunks and Bored Ape Yacht Club saw some items appreciate from hundreds of dollars to hundreds of thousands. However, these cases represent exceptions in the market.

Statistics show that most NFTs lose significant value after initial purchase. Studies indicate that more than 95% of created NFTs don't maintain their original value, making them high-risk investments.

Success Factors

NFTs that maintain or increase value generally possess:

  • Solid Community: Engaged and active fan base on social networks
  • Practical Utility: Benefits beyond collectible value, such as access to events or games
  • Recognized Creators: Artists or developers with established reputation
  • Genuine Scarcity: Limited quantity of tokens with rare characteristics
  • Artistic Quality: Works with recognized aesthetic or conceptual merit

Main Risks

Extreme Volatility: Prices can vary drastically in hours, creating substantial losses quickly.

Lack of Liquidity: It can be extremely difficult to sell NFTs when necessary, especially in bear markets.

Technological Dependence: Changes in the underlying blockchain or technical problems can affect token value and access.

Future Regulation: Possible regulatory changes can significantly impact the NFT market.

Technology Investment Alternatives

Established Cryptocurrencies

Bitcoin and Ethereum offer exposure to the digital asset market with greater liquidity, longer history and lower risk than individual NFTs. These assets may be more suitable for investors seeking blockchain technology exposure.

Technology Company Stocks

Companies like Meta (Facebook), Microsoft, Nvidia and Unity invest heavily in metaverse, virtual reality and NFT-related technologies, offering indirect sector exposure with lower volatility.

Specialized Investment Funds

ETFs and investment funds focused on blockchain technology and cryptocurrencies offer automatic diversification and professional management, suitable for investors who prefer more traditional approaches.

Future Perspectives of NFTs

The NFT market continues evolving rapidly. Developments in technologies like augmented reality, virtual reality and artificial intelligence may significantly expand non-fungible token applications and value.

Sectors like education, healthcare, digital identity and decentralized governance are exploring innovative NFT applications beyond entertainment and art. This expansion may create new use cases with genuine practical value.

Market maturation will likely lead to greater regulation, standardization and improved infrastructure, potentially reducing some current risks while maintaining technology benefits.

Conclusion: Are NFTs Suitable for Your Portfolio?

NFTs represent a significant technological innovation with potential to transform digital ownership concepts and create new virtual economies. However, as an investment instrument, they carry substantial risks that make them suitable only for a specific portion of investors.

If you have genuine interest in digital art, want to support specific creators or are fascinated by emerging technologies, NFTs may represent an interesting addition to your portfolio. However, as a primary investment strategy, there are more predictable and less volatile alternatives.

The technology underlying NFTs will continue evolving, and many practical applications are still being developed. The current market, dominated by speculation, may give way to more grounded and sustainable uses of the technology.

For investors interested in NFTs, the most prudent approach involves continuous education, investing only amounts that can be lost without significant financial impact, and focusing on projects with demonstrated practical utility beyond speculative value.

The fundamental principle of any successful investment strategy, as highlighted in works about market psychology, is never investing more than you can lose and always maintaining adequate diversification. NFTs, if included in a portfolio, should represent only a small fraction of total investments.


This article is educational in nature and does not constitute investment advice. The NFT market is highly volatile and speculative. Always consult qualified professionals before making financial decisions and invest only what you can afford to lose without compromising your financial situation.

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