Samourai is able to seamlessly switch between online and offline mode, depending on the status of the network connection on the device. Install Samourai on a device without a data connection to setup a fully offline wallet.
Offline wallets provide the ultimate in secure storage, as the private keys are never exposed to a device with an active network connection. An offline storage mechanism is a requirement of any secure cold storage setup.
If you have access to a second networked device, use our companion app Sentinel to easily manage your offline wallet without security loss or exposing your private keys.
Simply put your phone into aeroplane mode, open a the app and create your wallet.
When constructing a transaction in offline mode the wallet will present two options for broadcast :-
TxTenna is an Android app that enables off-grid broadcasts of signed Bitcoin transactions from Samourai Wallet. TxTenna-python is a set of scripts run on an internet connected PC or single board computer to receive and settle transactions from the TxTenna app on the Bitcoin blockchain.
This option will display the raw (Hex formatted) signed bitcoin transaction as a QR code which can also be copied and broadcast via your own Dojo, a transaction push service or via our 'watch only' companion app Sentinel .