EIP-712

FINAL

Final for 1,554 days, since August 11, 2022

Typed structured data signing

Typed structured data hashing and signing

Summary

EIP-712 defines a standard for hashing and signing typed structured data, enabling wallets to display human-readable descriptions of what a user is signing rather than a hex string. It introduces a domain separator and per-type schemas so that signatures are both human-inspectable and replay-protected across different contracts and chains.

Why It Matters

Without EIP-712, wallets present users with a raw 32-byte hash to sign, giving them no indication of what they are authorizing. With EIP-712, wallets can decode and display the structured data so users can make an informed decision before signing.

10/26

10 of 26 software wallets support EIP-712

Software Wallets by EIP-712 Support

Supported

Ambire

Supported

Browser Extension

MetaMask

Supported

Browser Extension & Mobile App

Sources (4)

MetaMask signature request for EIP-712 typed data

MetaMask shows the EIP-712 primary type and message fields of a typed data signature request.
MetaMask decoded calldata for a USDC approval

MetaMask decodes the calldata of a USDC approval into the function name, spender, and value, with a button to copy the raw data.

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Rainbow

Supported

Browser Extension & Mobile App

Rabby

Supported

Browser Extension & Mobile App

Sources (4)

Rabby signature request for EIP-712 typed data

Rabby shows the fields of an EIP-712 typed data signature request.
Rabby ABI view for a USDC approval

Rabby decodes the calldata of a USDC approval into the function name and parameters in its ABI view.

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WalletChan

Supported

Browser Extension

Sources (2)

WalletChan raw calldata and calldata digest for a USDC approval

Under Advanced details, WalletChan shows the calldata as decoded fields or raw hex with a copy button. It also shows the calldata digest.
WalletChan EIP-712 signature request with digests

WalletChan shows the EIP-712 fields by default. Under Advanced details, it shows the EIP-712 digest, the domain hash, and the message hash.

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Zerion

Supported

Browser Extension & Mobile App

Phantom

Supported

Browser Extension & Mobile App

Sources (2)

Phantom signature request for an EIP-712 message

Phantom shows the full EIP-712 struct, including the domain, message, and type definitions, in an expandable "Message" section with a copy button. No domain hash, message hash or EIP-712 digest is shown.
Phantom transaction details with raw calldata

Phantom shows the raw calldata hex in an expandable "Data" section with a copy button. No formatted calldata or calldata digest is shown.

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Zeus

Supported

Desktop App

Bitget Wallet

Supported

Browser Extension & Mobile App

Sources (3)

Bitget Wallet signature confirmation for an EIP-712 message

Bitget Wallet shows the EIP-712 message fields by default, but not the domain or type definitions.
Bitget Wallet meta data view of an EIP-712 struct

The full EIP-712 struct, including the domain and type definitions, is shown after opening "Meta data". No domain hash, message hash or EIP-712 digest is shown.
Bitget Wallet meta data view of transaction calldata

Opening "Meta data" on a transaction shows the function signature, parameter types (without values) and the raw calldata hex with a copy button. No calldata digest is shown.

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OKX Wallet

Supported

Browser Extension & Mobile App

Not Supported

Uniswap Wallet

Not Supported

Browser Extension & Mobile App

Sources (2)

Uniswap Wallet signature request for an EIP-712 message

Uniswap Wallet only lists the EIP-712 domain and message values as flattened key/value pairs, the EIP-712 struct itself is not shown. No domain hash, message hash or EIP-712 digest is shown.
Uniswap Wallet transaction details with truncated raw calldata

Expanding the transaction details shows the function name and a truncated raw calldata hex 0x617b…0000 with a copy button. The full raw hex, formatted calldata and calldata digest are not shown.

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