[Support] Will unilaterall close (force-close) of the Eclair-created channel from the remote (LND) side make funds appear on regular on-chain address of the Eclair-generated seed?

[Talkless]

Relative of mine had Eclair wallet with some funds on-chain and some on LN channel.

That phone is now dead.

He has recovery phrase, recovered into another (BlueWallet, iOS) wallet, but sees on-chain funds only (obviously).

LN Google Drive backup is not found in Eclair installed on Android VM - probably forgot to enable Google Drive backup...

Now, useful fact is that his LN funds are locked in the channel with my LND node.

Question: if I perform force-close (getting my part after 2016 blocks) from LND side, will his balance will be sent to his "regular" on-chain address that will be visible on that other on-chain wallet? Or that force-close address is some sort specific, "LN-related", from different derivation path (or whatever)?

Thanks!

[t-bast]

Restoring the seed in a different lightning wallet will not work for off-chain funds.
See https://github.com/ACINQ/eclair/blob/b75f6c36e9bab8b77702e16f2514d9accc47cd8d/eclair-core/src/main/scala/fr/acinq/eclair/Setup.scala#L183 for recovering the on-chain funds.

To recover the off-chain funds, you need to restore the seed in eclair-mobile, that will tell your peer to close the channel and you'll get the funds back on-chain.

[t-bast]

If you do the force-close from your lnd node, the result will be the same.
But your friend will need an eclair-mobile running to correctly claim his output of the commitment tx to his "regular" on-chain address.

[t-bast]

LN Google Drive backup is not found in Eclair installed on Android VM

Note that if there's really no backup recovery possible at all, you may need to use https://github.com/ACINQ/eclair-recovery-tool to recover the main output.

[dpad85]

LN Google Drive backup is not found in Eclair installed on Android VM - probably forgot to enable Google Drive backup...

Did he check his Google Drive folder? Backup will be in a folder named eclair-mobile in his Drive documents :

[Talkless]

....to correctly claim...

OK so that's what I wanted to know - you need to perform one more tx to claim. That obviously needs LN info..

you may need to use https://github.com/ACINQ/eclair-recovery-tool to recover the main output.

That link does not work and searching manually does not help.

[t-bast]

That link does not work and searching manually does not help.

Woops you're right, that's a branch in eclair at the moment: ACINQ/eclair#1197

Can you double-check the google drive backup? That would be the easy solution to recover the funds, otherwise we'll look into the recovery tool option.

[Talkless]

Can you double-check the google drive backup?

Yes, he said he is completely positive that there's no Eclair backup. He will try building Eclair after exams.