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If you’ve spent any time reading about crypto, you’ve probably seen the word “token” used in about a dozen different ways. Sometimes it means a currency. Sometimes it means a voting right. Sometimes it means a digital collectible.
So what actually is a token? And how is it different from a coin like Bitcoin or Ethereum?
Coins vs tokens: the key difference
This trips up a lot of beginners, so let’s clear it up first.
A coin is the native currency of its own blockchain. Bitcoin runs on the Bitcoin blockchain. Ether (ETH) runs on the Ethereum blockchain. These blockchains were built from scratch, and the coin is built into the network itself.
A token is different. It’s built on top of an existing blockchain, using that blockchain’s infrastructure. Tokens don’t have their own network. They piggyback on one that already exists.
Think of it this way: Ethereum is the platform. Tokens are apps running on that platform.
What can a token represent?
This is where it gets interesting. Because tokens are programmable, they can represent almost anything:
- Money or value — stablecoins like USDC are tokens designed to hold a steady price
- Governance rights — some tokens let holders vote on how a protocol is run
- Ownership — NFTs are tokens that represent ownership of a specific digital item
- In-game items — characters, weapons, or land in blockchain-based games
- Real-world assets — tokens can represent shares, bonds, or even real estate
- Access or membership — some tokens unlock content or communities
The token itself is just a programmable unit on a blockchain. What it represents depends entirely on the rules written into its smart contract.
How are tokens created?
Anyone can create a token. That’s one of the things that makes crypto so open — and so risky.
On Ethereum, tokens are created using a smart contract that follows a standard set of rules (the most common is called ERC-20 for fungible tokens, and ERC-721 for NFTs). Once deployed, the token exists on the blockchain permanently.
This low barrier to creation is why there are thousands of tokens in existence. Most have little or no value. A small number become genuinely useful. Telling the difference is one of the harder skills in crypto.
Fungible vs non-fungible tokens
You’ll hear these terms a lot, so here’s a quick explanation.
A fungible token is interchangeable. One USDC is always worth the same as another USDC, just like one dollar bill equals any other dollar bill. Most crypto tokens are fungible.
A non-fungible token (NFT) is unique. Each one is distinct and can’t be swapped one-for-one with another. That’s what makes NFTs useful for representing ownership of specific items — art, collectibles, game assets, and so on.
Should beginners buy tokens?
This is worth thinking carefully about. Tokens vary enormously in quality, purpose, and risk.
Well-established tokens with clear use cases and transparent teams are very different from newly launched tokens with anonymous creators and no real product. The latter category is where most scams live.
A reasonable starting point for most beginners is to stick with well-known assets like Bitcoin and Ethereum before exploring tokens. Once you understand how wallets, transactions, and smart contracts work, you’ll be much better equipped to evaluate whether any specific token is worth your attention.
The short version
A token is a programmable digital asset built on an existing blockchain. It can represent money, ownership, voting rights, or almost anything else — depending on how it was designed. They’re easy to create, which means quality varies wildly. Understanding what a token actually does (and who built it) matters a lot more than the price.