Contract Address

A contract address is the on-chain location of a smart contract, and for a token it is what actually identifies that token on that chain. Names, symbols and logos are metadata chosen by whoever deployed the contract and can duplicate anything; the address cannot, because a chain will not host two different contracts at the same address. This is why interfaces that take token selection seriously show the address, and why adding a token to a wallet asks for one. Two properties are worth keeping in mind. The same project may have entirely different addresses on different chains, so an address that is correct on one network identifies nothing on another — copying one across is a common way to send funds somewhere unrecoverable. And an address is only as trustworthy as where it came from: taken from a project's own documentation or a chain's official registry it identifies the asset; taken from a search result, a message or a social post it identifies whatever the person who wrote it wanted.