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Note required levels of descendant transactions in get_spendable_outputs

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Three levels of descendant transactions starting from the channel's
funding transaction should cover all potential spendable outputs.

The first level covers the commitment transaction.

The second level covers the to_self claims, to_remote claims,
second-stage HTLC claims and justice transactions.

The third levels covers the justice transactions on second-stage HTLCs,
and to_self claims on second-stage HTLCs.
This commit is contained in:
Wilmer Paulino 2023-09-29 09:16:48 -07:00
parent 6016101ac8
commit 6cf0351462
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1 changed files with 1 additions and 2 deletions
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lightning/src/chain/channelmonitor.rs
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@ -1680,8 +1680,7 @@ impl<Signer: WriteableEcdsaChannelSigner> ChannelMonitor<Signer> {
/// missed/unhandled descriptors. For the purpose of gathering historical records, if the
/// channel close has fully resolved (i.e., [`ChannelMonitor::get_claimable_balances`] returns
/// an empty set), you can retrieve all spendable outputs by providing all descendant spending
/// transactions starting from the channel's funding or closing transaction that have at least
/// [`ANTI_REORG_DELAY`] confirmations.
/// transactions starting from the channel's funding transaction and going down three levels.
///
/// `tx` is a transaction we'll scan the outputs of. Any transaction can be provided. If any
/// outputs which can be spent by us are found, at least one descriptor is returned.