Electrum 4.0 Relase notes. Not released yet. ETA June 2020
# Release 4.0 - (not released yet. ETA June 2020)
* Lightning Network support (experimental)
- Our implementation of Lightning relies on Electrum servers to
query channel states. Since servers can lie about the state of a
channel, users should either use a server that they trust, or
setup a private watchtower (see below). A watchtower is also
recommended for lightning wallets that remain offline for
extended periods of time (the default CSV 'to_self_delay' is 1
- Lightning funds cannot be restored from seed. Instead, users need
to create static backups of their channels. Static backups cannot
be used to perform lightning transactions, they can only be used
to trigger a remote-force-close of a channel.
- Lightning-enabled wallet files must not be copied. Instead, a
backup of the wallet can be created from the Qt menu, and it will
contain static backups of all its channels. Backups can also be
exported for each channel (e.g. via QR code), and imported in
another wallet. Since backups are encrypted with a key derived
from the wallet's xpub, they can only be imported into another
instance of the same wallet, or a watch-only version of it. The
force-close is not triggered automatically when the backup is
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