In this track: How people use Ethereum
intermediate · 3 MIN READ

ENS names explained

A naming system can map a readable name to records under its rules.

LET’S PICTURE IT

A contact book can associate a memorable label with a delivery address, while the entry still needs to be current and correct.

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From a public address to a verified signatureStep 1 / 4
From a public address to a verified signaturePublic address0x0000…0001Share to receiveAnother personCan read the addressCannot sign for youPublic identifier ≠ secret authorizationLocal signerPrivate key stays hereSign the chosen requestSigned requestMessage + signatureSecret key not includedThe moving packet represents a signature, not a keySignatureCheck the exact messageCheck the signing contextVerificationAuthorization checkedIntent still mattersValidity and safety are different questionsWallet interfaceReads public dataRequests authorizationNetwork stateBalances and recordsIndependent verificationNo wallet is connected in this local illustration

An address is public receiving information. It is not the private key that authorizes actions.

Animated local teaching model. No wallet, RPC or live blockchain data. Some labels and hashes are abbreviated for readability.

A name can resolve to data

ENS provides a system for names and associated records, including address information. A resolver supplies the relevant record under the naming system’s mechanisms.

A name is not a fixed eternal address

Ownership, expiration conditions and record updates can affect resolution. Do not assume a name always points to the same destination simply because you used it once.

Displayed names need careful interpretation

Reverse-name displays and forward address records have their own checks. A friendly label alone should not substitute for verifying the intended recipient and network context.

Our local checker does not resolve names

The address tool expects a hexadecimal address and checks its format. It makes no network request for ENS data, so it cannot tell you a name’s current record or owner.

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Does the offline address checker here fetch current ENS records?

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Original explanations by EtherTools. Examples are educational and source-linked; this site is independent of the Ethereum Foundation. Our approach.