Tokens: What They Are and Aren’t

A token is just a tracked unit of ownership on the ledger — its value comes from the claim behind it, not from being “on the blockchain.”

Crypto & Tokenization · Lesson 3 · 8 min read

You keep seeing the word “token” stuck on wildly different things: a coin people spend like money, a “token” that supposedly represents a share of a startup, and an NFT that’s a picture of a cartoon ape someone paid a fortune for. They’re all called tokens — so are they the same thing under the hood? And what actually makes one valuable and another worthless? Hold that question; by the end you’ll have a single, check-it-yourself test for any token anyone shows you.

A token is a tracked unit of ownership

Strip away the marketing and a token is just an entry the ledger keeps track of: address X owns N units of token T. That’s it. “Creating a token” means publishing some rules (usually a small program called a smart contract) that say how many exist and how they can be transferred — and from then on the ledger tracks who owns what.

One useful split: the native coin of a network (the built-in unit used to pay fees and secure it) vs tokens defined by a contract running on top of that network. Both are just ledger entries; the difference is whether the unit is the protocol’s own or defined by a program living on it.

Fungible vs non-fungible

Tokens come in two flavors, and the difference is simple:

• Fungible — every unit is identical and interchangeable. One of your dollars is as good as one of mine; you don’t care which unit you hold. Most currencies, points, and shares work this way.
• Non-fungible (an NFT) — every unit is unique, with its own id, like a serial number or a deed. Your specific one isn’t swappable for another, because the whole point is that exact item.

Same underlying machinery (entries on a ledger); the only question is whether the units are interchangeable.

Fungible vs non-fungible, in everyday objects:
• A £10 note is fungible — if I swap yours for another £10 note, nothing is lost; you only care about the amount.
• A concert ticket with an assigned seat, or the deed to a specific house, is non-fungible — “seat A12” or “14 Oak Street” is not interchangeable with any other. The identity of the exact item is the value.

A token is only as good as the claim behind it

Here’s the part the hype skips. The ledger tracks ownership flawlessly — it can prove beyond doubt that you own token T. But what token T actually means — that it’s a share, a ticket, a deed, redeemable for a dollar — almost always lives outside the ledger, in a promise that someone in the real world has to honor. The chain can prove you hold the coat-check stub; it can’t force a coat into the closet.

So the one question worth asking about any token is: what does it entitle me to, who is obligated to honor that, and can I verify it? Some tokens have rock-solid logic that executes in code (a governance vote that actually runs). Others are a label on an entry with nothing real behind them. Being “on the blockchain” tells you ownership is tracked well — nothing more. That’s not cynicism; it’s the check.

Two tokens, same machinery, very different worth:
1. Token A claims “1 token = $1,” and a company says it holds real dollars to back every one.
2. Token B is a project’s coin that promises vague “future value.”
3. On-chain, both are identical kinds of object — fungible entries the ledger tracks perfectly. Ownership is never in doubt for either.
4. The difference is entirely the claim: A is only worth $1 if that company actually holds the dollars and honors redemption — something you can demand proof of. B rests on belief alone, with no obligation behind it.
5. The test that separates them isn’t “is it on a blockchain?” (both are) — it’s “trace the real-world obligation behind the entry, and check whether anyone is actually bound to honor it.”