Bitcoin Lightning Wallet

An Android phone app

Essential app guide

An info you need to know before you start using a Lightning Wallet
Installing Lightning wallet
Using Lightning wallet

When something goes wrong

What to do when you no longer have an access to your wallet
Recovering lost balance
Reimbursing funds locked in a lost payment channel

Info on Olympus server

A helper service for Lightning stuff
What does Olympus server do
Watchtower service info
Storage tokens

Reimbursing funds locked in a lost payment channel

Off-chain balance can be recovered after wallet gets uninstalled or even after phone gets lost because encrypted channel snapshots are saved to Olympus server as well as to local file on a phone.

Note that mnemonic phrase is used as an encryption key in both cases so you still need to have it saved somewhere in order to decrypt your channel backups.

Restoring using local backup

BLW periodically saves encrypted channel snapshots to /storage/BLW/mainnet/encrypted.channels.bkp file. Once (re)installed wallet checks if that file is present and then applies user provided mnemonic phrase as a decryption key. Once decrypted BLW puts obtained channels back in place.

Restoring using Olympus backup

Olympus recovery is used as a measure of last resort in case when local backup is not available and works as follows: once a fresh payment channel is created it gets encrypted and sent to Olympus server, this operation is carried out once per channel. Olympus backup can later be retrieved and used to reimburse your lost channel balance back to your on-chain wallet using a data-loss-protection protocol. Olympus recovery should be initiated manually by tapping a button in a wallet settings page.

Please note that following conditions must be met for data-loss-protection to work: