Overview
ERC-1271 is a standard for smart contract signatures, letting contracts validate signatures instead of externally owned accounts. It enables smart accounts to sign messages. It is widely used in account abstraction.
How It Works
A contract implements isValidSignature to verify that a signature is valid according to its logic. Applications call this method instead of assuming an EOA signature. This lets contracts participate in signing flows.
Why It Matters
ERC-1271 lets smart wallets sign messages and transactions, enabling recovery and multisig verification. It is essential for account abstraction and on-chain identity. It is a foundational standard.
Related Concepts
ERC-1271 relates to Smart Accounts, Digital Signatures, and Account Abstraction. It enables contract-based signing.