A token is uniquely identified by the network it lives on and its onchain address, such as a contract or mint address, not by its name or ticker symbol. Anyone can deploy a token with a familiar name, so two assets can look alike while being unrelated. Asset identifier standards add a single label that combines the network and the address, and some link a token to the real-world instrument it represents.
Last updated: October 12, 2026.
Why are names and symbols not enough?
A token's name and symbol are fields its creator chooses. Nothing stops a second contract from using the same ones. On a single network, two tokens with the same symbol are told apart only by their contract addresses. Across networks, the same address can even point to different contracts, so the network has to be part of the identity too.
The same address on different chains guide explains why a matching address does not mean a matching asset.
What identifies a token?
Several identifiers work at different levels. Together they describe what a holder actually owns.
| Identifier | What it pins down | Where it is used |
|---|---|---|
| Network identifier | Which blockchain the token lives on | Wallets, explorers, and transaction signing |
| Contract address | Which contract records the token on that network | Every onchain transfer and integration |
| Chain-agnostic asset ID | Network and address combined in one string | Multichain apps and data providers |
| Financial identifier | The instrument or token in market records | Securities records and regulatory reporting |
Chain-agnostic formats such as CAIP-19 combine a chain ID, an asset namespace such as a token standard, and an asset reference such as a contract address into one identifier. For tokenized securities, an ISIN under ISO 6166 identifies the underlying instrument, and the Digital Token Identifier under ISO 24165 identifies the token itself.
How do you confirm you have the right token?
Issuers usually publish official contract addresses for each network they support in their documentation. A wallet or exchange listing can be checked against that list, and a block explorer shows the contract's history and holders on that network.
What changes when one asset spans several chains?
An asset deployed on several networks has a different contract address on each one, or sometimes the same address on networks that allow it. The issuer's list ties those deployments together as one asset. A token standard that keeps one supply across chains also records the link onchain, since each deployment is configured with its peer contracts on other chains. The wrapped token guide explains how official deployments differ from wrapped copies made by third parties.
FAQ
Can two tokens have the same name and symbol?
Yes. Names and symbols are not unique. The network and the token's onchain address are what identify it.
Is a token's contract address the same on every chain?
Not necessarily. Some issuers deploy to matching addresses where networks allow it, but many deployments use different addresses. The issuer's documentation is the reference.
Does a token identifier prove the token is legitimate?
No. An identifier labels an asset but does not vouch for it. Matching the address to the issuer's published records confirms that a token is the issuer's official deployment.
Build with clear asset identity
For token standards and integration guides, start with the LayerZero developer resources.