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EXAMPLES.rst

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Examples demonstrating how to use trezorctl

Show all available options:

trezorctl --help

Retrieve features, settings and coin types supported by your device:

trezorctl get-features

Bitcoin examples

Get first receiving address of first account for Bitcoin (Legacy / non-SegWit):

trezorctl get-address --coin Bitcoin --script-type address --address "m/44'/0'/0'/0/0"

Get first receiving address of first account for Bitcoin (SegWit-in-P2SH):

trezorctl get-address --coin Bitcoin --script-type p2shsegwit --address "m/49'/0'/0'/0/0"

Get first receiving address of first account for Bitcoin (Bech32 native SegWit P2WPKH):

trezorctl get-address --coin Bitcoin --script-type segwit --address "m/84'/0'/0'/0/0"

Get Legacy Bitcoin xpub (can be used to create a watch-only wallet):

trezorctl get-public-node --coin Bitcoin --address "m/44'/0'/0'"

Transaction signing

You can use trezorctl to sign a transaction without it automatically being broadcast to the Bitcoin network.

You will need the following pieces of info:

  1. Transaction ID containing the Output we want to spend (aka prevhash or a5ea715a...d201e64e in example below).
  2. Index number of the Output being spent from the above tx (aka previndex or 0 in example below).
  3. BIP32 path to the Node which can spend the above UTXO (eg Bitcoin/0'/0/0 for the first).
  4. Destination address where you want to send funds (eg 3M8XGFBKwkf7miBzpkU3x2DoWwAVrD1mhk below).
  5. Amount to send in satoshis - 91305 in the example below (multiply BTC amount 0.00091305 by 100,000,000).
  6. Expected fee (0.00019695 BTC in example below). Note: the miner receives all satoshis left unspent from a transaction. If you want to receive some change, you need to send it to an address you own (otherwise it will go to miner). Fee is not needed below, we just want it as a sanity check.

There are many ways to retrieve the info above: from a watch-only wallet in Bitcoin Core, https://coinb.in (screenshot) etc. The easiest way is using the Trezor online wallet: https://beta-wallet.trezor.io

After authenticating, open the "Send" tab, fill-out all details, then open the "Show transaction details" menu to see the info needed above (screenshot). Once you have the required details, you can then perform the transaction signing using trezorctl as shown in the example below:

trezorctl sign-tx -c Bitcoin

Input (prevhash:previndex, empty to move on): a5ea715aa99ca30516f3af6f622dfe7399d883d49ad74b1fe33fdf73d201e64e:0
Node path to sign with (e.g.- Bitcoin/0'/0/0): Bitcoin/0'/0/0

Input (prevhash:previndex, empty to move on):

Pay to address (empty to move on): 3M8XGFBKwkf7miBzpkU3x2DoWwAVrD1mhk
Amount (in satoshis): 91305

Pay to address (empty to move on):
Passphrase required:

Confirm your Passphrase:

RECEIVED PART OF SERIALIZED TX (152 BYTES)
RECEIVED PART OF SERIALIZED TX (37 BYTES)
SIGNED IN 52.538 SECONDS, CALLED 10 MESSAGES, 189 BYTES

Signed Transaction:
01000000014ee601d273df3fe31f4bd79ad483d89973fe2d626faff31605a39ca95a71eaa5000000006a47304402206386a0ad0f0b196d375a0805eee2aebe4644032c2998aaf00e43ce68a293986702202ad25964844657e10130f81201b7d87eb8047cf0c09dfdcbbe68a1a732e80ded012103b375a0dd50c8dbc4a6156a55e31274ee0537191e1bc824a09278a220fafba2dbffffffff01a96401000000000017a914d53d47ccd1579b93c284e9caf3c81f3f417871698700000000

Use the following form to broadcast it to the network:
https://btc-bitcore1.trezor.io/tx/send

The signed transaction text can then be inspected in Electrum (screenshot), coinb.in or another tool. If all info is correct, you can then broadcast the tx to the Bitcoin network via the URL provided by trezorctl or Electrum (Tools → Load transaction → From text. Here is a screenshot). TIP: Electrum will only show the transaction fee if you previously imported the spending address (eg 16ijWp48xn8hj6deD5ZHSJcgNjtYbpiki8 from example tx above). Also, the final tx size (and therefore satoshis / byte) might be slightly different than the estimate shown on beta-wallet.trezor.io

The final broadcast and mined transaction can be seen here: https://blockchain.info/tx/270684c14be85efec9adafa50339fd120658381ed2300b9207d0a0df2a5f0bf9

Litecoin examples

Get first receiving address of first account for Litecoin (SegWit-in-P2SH):

trezorctl get-address --coin Litecoin --script-type p2shsegwit --address "m/49'/2'/0'/0/0"

Get first receiving address of first account for Litecoin (Bech32 native SegWit P2WPKH):

trezorctl get-address --coin Litecoin --script-type segwit --address "m/84'/2'/0'/0/0"

Notes

  1. Bech32 native SegWit encoded addresses require Trezor Firmware v1.6.0 or later.