Part 1: hsm_secret backup.

The hsm_secret needs to be backed up once, e.g. on paper, best even multiple copies. Think of it as a seed word backup. It secures the on-chain balance, but we will need Part 2 to always have an up-to-date backup of our channels’ states.

Part 2: Automatic channel state backups

[1] Move to your home directory and clone the C-Lightning plugin repo.

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