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# Messages, typed data, and SIWE

WalletChan supports:

* `personal_sign`
* `eth_signTypedData_v3`
* `eth_signTypedData_v4`

Deprecated `eth_sign` and typed-data v1 requests are rejected.

## Personal messages

The review shows readable text when the payload is valid text and retains the
raw payload under Advanced. Check the exact origin and signer. A signature can
prove control or authorize offchain behavior even though it pays no gas.

## EIP-712 typed data

WalletChan validates schema size, graph/depth, types, signer, and payload before
rendering structured fields. It shows domain and typed values, including
recursive data and labeled addresses, with hashes/raw data under Advanced.

Raw ERC-7710 delegation typed data from a dapp is blocked. WalletChan only
creates supported delegation requests through its own authority flow.

## Sign-In with Ethereum

SIWE/EIP-4361 is parsed into domain, address, statement, URI, chain, nonce,
issued/expiry/not-before times, and resources. WalletChan checks the site
domain, account, URI, chain, nonce quality, and time window.

Unsafe or inconsistent SIWE data requires explicit acknowledgement or is
rejected. “Sign in” is still a cryptographic signature; read the statement and
resources.

## Account compatibility

| Account | Personal / EIP-712 |
| --- | --- |
| Private key / seed | Local signing |
| Ledger | Hardware signing |
| View-only | Reject-only |
| Safe | Not supported as EOA message signing |
| Bankr | Remote signing |

Master and agent-password sessions can authorize ordinary eligible signatures.
Ledger always requires physical approval.

## Related guides

* [Read the transaction review model](/transactions/review)
* [Understand simulation and clear signing](/transactions/simulation)
* [Manage dapp permissions](/dapps/permissions)
* [Browse supported signature standards](/reference/standards)