Sign transaction

Asks device to sign given inputs and outputs of pre-composed transaction. User is asked to confirm all transaction details on Trezor.

const result = await TrezorConnect.signTransaction(params);

Params types

**Optional common params**

  • coin - required string

    Determines network definition specified in coins.json file. Coin shortcut, name or label can be used. See supported coins

  • inputs - required Array of PROTO.TxInputType,
  • outputs - required Array of PROTO.TxOutputType,
  • paymentRequests - optional Array of PROTO.TxAckPaymentRequest. See SLIP-24
  • refTxs - optional Array of RefTransaction.

    If you don't want to use build-in blockbook backend you can optionally provide those data from your own backend transformed to Trezor format. Since Firmware 2.3.0/1.9.0 referenced transactions are required. Zcash and Komodo refTxs should also contains expiry, version_group_id and extra_data fields.

  • locktime - optional number,
  • version - optional number transaction version,
  • expiry - optional number, only for Decred and Zcash,
  • versionGroupId - optional number only for Zcash, nVersionGroupId when overwintered is set,
  • overwintered - optional boolean only for Zcash
  • timestamp - optional number only for Capricoin, transaction timestamp,
  • branchId - optional number, only for Zcash, BRANCH_ID when overwintered is set
  • push - optional boolean Broadcast signed transaction to blockchain. Default is set to false
  • amountUnitoptional PROTO.AmountUnit

    show amounts in BTC, mBTC, uBTC, sat

Example

PAYTOADDRESS
TrezorConnect.signTransaction({
    inputs: [
        {
            address_n: [
                (44 | 0x80000000) >>> 0,
                (0 | 0x80000000) >>> 0,
                (2 | 0x80000000) >>> 0,
                1,
                0,
            ],
            prev_index: 0,
            prev_hash: 'b035d89d4543ce5713c553d69431698116a822c57c03ddacf3f04b763d1999ac',
            amount: 3431747,
        },
    ],
    outputs: [
        {
            address_n: [
                (44 | 0x80000000) >>> 0,
                (0 | 0x80000000) >>> 0,
                (2 | 0x80000000) >>> 0,
                1,
                1,
            ],
            amount: 3181747,
            script_type: 'PAYTOADDRESS',
        },
        {
            address: '18WL2iZKmpDYWk1oFavJapdLALxwSjcSk2',
            amount: 200000,
            script_type: 'PAYTOADDRESS',
        },
    ],
    coin: 'btc',
});
SPENDP2SHWITNESS
TrezorConnect.signTransaction({
    inputs: [
        {
            address_n: [
                (49 | 0x80000000) >>> 0,
                (0 | 0x80000000) >>> 0,
                (2 | 0x80000000) >>> 0,
                1,
                0,
            ],
            prev_index: 0,
            prev_hash: 'b035d89d4543ce5713c553d69431698116a822c57c03ddacf3f04b763d1999ac',
            amount: 3431747,
            script_type: 'SPENDP2SHWITNESS',
        },
    ],
    outputs: [
        {
            address_n: [
                (49 | 0x80000000) >>> 0,
                (0 | 0x80000000) >>> 0,
                (2 | 0x80000000) >>> 0,
                1,
                1,
            ],
            amount: 3181747,
            script_type: 'PAYTOP2SHWITNESS',
        },
        {
            address: '18WL2iZKmpDYWk1oFavJapdLALxwSjcSk2',
            amount: 200000,
            script_type: 'PAYTOADDRESS',
        },
    ],
    coin: 'btc',
});
PAYTOADDRESS with refTxs (transaction data provided from custom backend)
TrezorConnect.signTransaction({
    inputs: [
        {
            address_n: [
                (44 | 0x80000000) >>> 0,
                (0 | 0x80000000) >>> 0,
                (2 | 0x80000000) >>> 0,
                1,
                0,
            ],
            prev_index: 0,
            prev_hash: 'b035d89d4543ce5713c553d69431698116a822c57c03ddacf3f04b763d1999ac',
            amount: 3431747,
        },
    ],
    outputs: [
        {
            address_n: [
                (44 | 0x80000000) >>> 0,
                (0 | 0x80000000) >>> 0,
                (2 | 0x80000000) >>> 0,
                1,
                1,
            ],
            amount: 3181747,
            script_type: 'PAYTOADDRESS',
        },
        {
            address: '18WL2iZKmpDYWk1oFavJapdLALxwSjcSk2',
            amount: 200000,
            script_type: 'PAYTOADDRESS',
        },
    ],
    refTxs: [
        {
            hash: 'b035d89d4543ce5713c553d69431698116a822c57c03ddacf3f04b763d1999ac',
            inputs: [
                {
                    prev_hash: '448946a44f1ef514601ccf9b22cc3e638c69ea3900b67b87517ea673eb0293dc',
                    prev_index: 0,
                    script_sig:
                        '47304402202872cb8459eed053dcec0f353c7e293611fe77615862bfadb4d35a5d8807a4cf022015057aa0aaf72ab342b5f8939f86f193ad87b539931911a72e77148a1233e022012103f66bbe3c721f119bb4b8a1e6c1832b98f2cf625d9f59242008411dd92aab8d94',
                    sequence: 4294967295,
                },
            ],
            bin_outputs: [
                {
                    amount: 3431747,
                    script_pubkey: '76a91441352a84436847a7b660d5e76518f6ebb718dedc88ac',
                },
                {
                    amount: 10000,
                    script_pubkey: '76a9141403b451c79d34e6a7f6e36806683308085467ac88ac',
                },
            ],
            lock_time: 0,
            version: 1,
        },
    ],
    coin: 'btc',
});

Result types

{
    success: true,
    payload: {
        signatures: Array<string>, // Array of signer signatures
        serializedTx: string,      // serialized transaction
        txid?: string,             // broadcasted transaction id
    }
}

Error

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