Technical Definition

EIP-712 Typed Data

EIP-712 defines a standard way for Ethereum wallets to sign structured typed data rather than opaque byte strings.

By Crypto University EditorialLast updated October 20, 2026

SignatureMessage SigningWallet

It can improve signature clarity but users still need to understand the requested action.

Readable structure does not guarantee safety; malicious applications can request dangerous typed signatures.

Detailed Explanation

It is commonly used for permits, orders, authentication, and off-chain approvals.

“A DEX asks a user to sign a typed order containing token, amount, price, and expiration.”

A smart contract is blockchain-deployed code that can hold state and execute predefined rules when called.

Software or hardware that stores your private keys and lets you sign transactions.

A cryptographic signature proves that the holder of a private key authorized specific data without revealing the private key itself.

Blind signing means approving a blockchain transaction or message without being able to clearly verify all the actions or data being authorized.

Message signing uses a wallet key to prove control of an address or account without necessarily creating an on-chain transaction.