What Are NFTs?

NFTs can be confusing, learn everything you need to know about them here.

You may have heard of NFTs (non-fungible tokens) before—maybe not. Either way, owning an NFT is not the same as owning a real world piece of art. So what exactly does it mean?

NFTs, or non-fungible tokens, are tokens (unique lines of code) that can be traded on a cryptocurrency blockchain.


A blockchain is a digital record used to keep track of cryptocurrency transactions (Learn more about them here).


Cryptocurrency, like physical currency, is fungible. Anything fungible can be replaced by a copy that is practically identical. So every dollar bill has the same value of any other dollar bill, and every bitcoin is the same as any other bitcoin.

NFTs’ uniqueness is what makes them non-fungible. Anything non-fungible can’t be replaced by a copy and be considered the same. NFTs are like digital snowflakes where each one is unique, each token can only be owned by one person on a blockchain.


Buying and Selling

Anyone can buy NFTs, and those that do usually hope that the NFT they buy will rise in value. Because NFTs are traded on the blockchains, they are bought and sold using the blockchain’s associated cryptocurrency. That means you have to buy cryptocurrency with real world currency to start buying and selling NFTs


Not all cryptocurrency allow NFTs (including Bitcoin, the most popular cryptocurrency), and most are traded on the Ethereum blockchain.



Blockchains rely on redundancy with hundreds of verifications. Each time an NFT is traded it has to go through the verification process. That means the NFT must be sent to hundreds of different computers. So the smaller the NFT the more efficient it is to verify.

Entire images or video files are too big to be traded. Because it’s inefficient to have the entire image, the NFTs people are buying are actually urls that point to larger digital files.

This means most NFTs are like digital plaques that name and describe the artwork, not the artwork itself. For instance: a popular NFT trading site could host a series of images on a web server. The NFT is only a url (less than a hundred characters long) that points to an image (more than a million characters) on the server.


vibrant, visual representation of a how an NFT is purchased on a blockchain like buying a url.

Illustration: Fernanda Andrade


Because the NFT is only a url that links to a file, the person who bought the NFT:

  • Doesn’t own the copyright of the file itself.
  • Doesn’t control what file the url they own points to.
  • Can’t move the file to another blockchain or service.


Almost anyone could create a new blockchain with the same NFT you bought. That would be like buying a painting and one museum says you own it, and one museum says you don’t. The actual image itself can be freely distributed and accessed by anyone.


What are NFTs Worth?

The worth of the NFT is mostly driven by hype. They only have the excitement of people selling NFTs to drive up their prices.

This excitement mostly comes from NFT community sites that host hundreds of images with similar themes. These community sites have the same appeal as collecting real world items like stamps, baseball cards, or Beanie Babies. Some sites even allow users to create and upload their own homemade images to sell. The community aspect is one of the big parts that attract people to NFT trading.



In order for an NFT to raise in value, not only does it need excitement for NFTs in general, it needs excitement for the particular file it points to. Even if the cryptocurrency used to trade the NFT gains more value, most NFTs will only lose value over time and the vast majority have no value at all.


various people auctioning NFTs online

Illustration: Fernanda Andrade


NFTs are trendy and appeal to being a part of a community. They work well as a marketing tool that persuades people to buy items of very little value.

NFTs can be bought at a low price and sold at a higher price, but the real winners in the NFT world are those that create and own the digital files the NFTs point to. They can sell them to people who want to say, “Look I own a placeholder for a cool thing on the internet.”


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