2020-12-27 00:10:02 +00:00
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## chantools fixoldbackup
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Fixes an old channel.backup file that is affected by the lnd issue #3881 (unable to derive shachain root key)
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2020-12-27 00:40:51 +00:00
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### Synopsis
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Fixes an old channel.backup file that is affected by the
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lnd issue [#3881](https://github.com/lightningnetwork/lnd/issues/3881)
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(<code>[lncli] unable to restore chan backups: rpc error: code = Unknown desc =
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unable to unpack chan backup: unable to derive shachain root key: unable to
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derive private key</code>).
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2020-12-27 00:10:02 +00:00
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```
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chantools fixoldbackup [flags]
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```
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2020-12-27 00:40:51 +00:00
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### Examples
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```
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chantools fixoldbackup --rootkey xprvxxxxxxxxxx \
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--multi_file ~/.lnd/data/chain/bitcoin/mainnet/channel.backup
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```
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2020-12-27 00:10:02 +00:00
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### Options
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```
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--bip39 read a classic BIP39 seed and passphrase from the terminal instead of asking for lnd seed format or providing the --rootkey flag
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-h, --help help for fixoldbackup
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--multi_file string lnd channel.backup file to fix
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--rootkey string BIP32 HD root key of the wallet to use for decrypting the backup; leave empty to prompt for lnd 24 word aezeed
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```
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### Options inherited from parent commands
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```
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-r, --regtest Indicates if regtest parameters should be used
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-t, --testnet Indicates if testnet parameters should be used
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```
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### SEE ALSO
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* [chantools](chantools.md) - Chantools helps recover funds from lightning channels
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