trezor-suite/docs/packages/connect/methods/ethereumSignTransaction.md

Ethereum: Sign transaction

Asks device to sign given transaction using the private key derived by given BIP32 path. User is asked to confirm all transaction details on Trezor.

const result = await TrezorConnect.ethereumSignTransaction(params);

Params

**Optional common params**

flowtype

• path — required string | Array<number> minimum length is 3. read more
• transaction - required Object type of EthereumTransactionEIP1559|EthereumSignTransaction "0x" prefix for each field is optional

Examples

EIP1559 (after The London Upgrade)

⚠️ Supported firmware versions Trezor 1 v1.10.4 and Trezor T v2.4.2

If both parameters maxFeePerGas and maxPriorityFeePerGas are defined, transaction will be signed as the new type introduced in EIP1559.

TrezorConnect.ethereumSignTransaction({
    path: "m/44'/60'/0'",
    transaction: {
        to: '0xd0d6d6c5fe4a677d343cc433536bb717bae167dd',
        value: '0xf4240',
        data: '0xa',
        chainId: 1,
        nonce: '0x0',
        maxFeePerGas: '0x14',
        maxPriorityFeePerGas: '0x0',
        gasLimit: '0x14',
    },
});

Legacy

For Trezor One and Trezor T with firmware older than 2.4.2 (but supported newer firmware versions too).

TrezorConnect.ethereumSignTransaction({
    path: "m/44'/60'/0'",
    transaction: {
        to: '0x7314e0f1c0e28474bdb6be3e2c3e0453255188f8',
        value: '0xf4240',
        data: '0x01',
        chainId: 1,
        nonce: '0x0',
        gasLimit: '0x5208',
        gasPrice: '0xbebc200',
    },
});

Result

flowtype

{
    success: true,
    payload: {
        v: string, // hexadecimal string with "0x" prefix
        r: string, // hexadecimal string with "0x" prefix
        s: string, // hexadecimal string with "0x" prefix
    }
}

Error

{
    success: false,
    payload: {
        error: string // error message
    }
}