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ElectrumSyncClient: Skip unconfirmed get_history entries - #4341

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Electrum's blockchain.scripthash.get_history will return the confirmed history for any scripthash, but will then also append any matching entries from the mempool, with respective height fields set to 0 or -1 (depending on whether all inputs are confirmed or not).

Unfortunately we previously only included a filter for confirmed get_history entries in the watched output case, and forgot to add such a check also when checking for watched transactions. This would have us treat the entry as confirmed, then failing on the get_merkle step which of course couldn't prove block inclusion. Here we simply fix this omission and skip entries that are still unconfirmed (e.g., unconfirmed funding transactions from 0conf channels).

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Would be kinda nice to have a test for this, but I'm okay with that just living in ldk-node

Comment threadlightning-transaction-sync/src/electrum.rs Outdated
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Additional details and impacted files
@@ Coverage Diff @@## main #4341 +/- ##
=======================================
Coverage 86.78% 86.79% =======================================
Files 158 158 Lines 102788 102788 Branches 102788 102788 =======================================
+ Hits 89206 89210 +4 + Misses 11236 11232 -4 
Partials 2346 2346
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@tnull
tnullforce-pushed the 2026-01-electrum-improvements branch 2 times, most recently from 9f3970e to ac0dba3CompareJanuary 23, 2026 15:35
@tnull
tnullforce-pushed the 2026-01-electrum-improvements branch from ac0dba3 to 115ab6dCompareJanuary 23, 2026 18:05
@tnull
ElectrumSyncClient: Skip unconfirmed get_history entries
cc1eb16
Electrum's `blockchain.scripthash.get_history` will return the
*confirmed* history for any scripthash, but will then also append any
matching entries from the mempool, with respective `height` fields set
to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed
`get_history` entries in the watched output case, and forgot to add such
a check also when checking for watched transactions. This would have us
treat the entry as confirmed, then failing on the `get_merkle` step
which of course couldn't prove block inclusion. Here we simply fix this
omission and skip entries that are still unconfirmed (e.g., unconfirmed
funding transactions from 0conf channels).
Signed-off-by: Elias Rohrer <dev@tnull.de>
@tnull
tnullforce-pushed the 2026-01-electrum-improvements branch from 115ab6d to cc1eb16CompareJanuary 23, 2026 18:08
@TheBlueMatt
TheBlueMatt merged commit 1a50684 into lightningdevkit:mainJan 23, 2026
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Backported to 0.2 in #4344

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Backported to 0.1 in #4343

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Merge pull request#4343from TheBlueMatt/2026-01-0.1-electrum-fix
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[0.1] Backport #4341 and cut 0.1.9
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`ElectrumSyncClient`: Skip unconfirmed `get_history` entries by tnull · Pull Request #4341 · lightningdevkit/rust-lightning · GitHub
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ElectrumSyncClient: Skip unconfirmed get_history entries - #4341
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ElectrumSyncClient: Skip unconfirmed get_history entries#4341
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Electrum's blockchain.scripthash.get_history will return the confirmed history for any scripthash, but will then also append any matching entries from the mempool, with respective height fields set to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed get_history entries in the watched output case, and forgot to add such a check also when checking for watched transactions. This would have us treat the entry as confirmed, then failing on the get_merkle step which of course couldn't prove block inclusion. Here we simply fix this omission and skip entries that are still unconfirmed (e.g., unconfirmed funding transactions from 0conf channels).
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Would be kinda nice to have a test for this, but I'm okay with that just living in ldk-node
Comment threadlightning-transaction-sync/src/electrum.rs
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✅ Project coverage is 86.79%. Comparing base (feef6a4) to head (cc1eb16).
⚠️ Report is 9 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #4341 +/- ##
=======================================
Coverage 86.78% 86.79% =======================================
Files 158 158 Lines 102788 102788 Branches 102788 102788 =======================================
+ Hits 89206 89210 +4 + Misses 11236 11232 -4 
Partials 2346 2346 
FlagCoverage Δ
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@tnull
ElectrumSyncClient: Skip unconfirmed get_history entries
cc1eb16
Electrum's `blockchain.scripthash.get_history` will return the
*confirmed* history for any scripthash, but will then also append any
matching entries from the mempool, with respective `height` fields set
to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed
`get_history` entries in the watched output case, and forgot to add such
a check also when checking for watched transactions. This would have us
treat the entry as confirmed, then failing on the `get_merkle` step
which of course couldn't prove block inclusion. Here we simply fix this
omission and skip entries that are still unconfirmed (e.g., unconfirmed
funding transactions from 0conf channels).
Signed-off-by: Elias Rohrer <dev@tnull.de>
@tnull
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2026-01-electrum-improvements
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Backported to 0.2 in #4344
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Backported to 0.1 in #4343
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Merge pull request#4343from TheBlueMatt/2026-01-0.1-electrum-fix
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[0.1] Backport #4341 and cut 0.1.9

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`ElectrumSyncClient`: Skip unconfirmed `get_history` entries by tnull · Pull Request #4341 · lightningdevkit/rust-lightning · GitHub
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ElectrumSyncClient: Skip unconfirmed get_history entries - #4341
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ElectrumSyncClient: Skip unconfirmed get_history entries#4341
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Electrum's blockchain.scripthash.get_history will return the confirmed history for any scripthash, but will then also append any matching entries from the mempool, with respective height fields set to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed get_history entries in the watched output case, and forgot to add such a check also when checking for watched transactions. This would have us treat the entry as confirmed, then failing on the get_merkle step which of course couldn't prove block inclusion. Here we simply fix this omission and skip entries that are still unconfirmed (e.g., unconfirmed funding transactions from 0conf channels).
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Would be kinda nice to have a test for this, but I'm okay with that just living in ldk-node
Comment threadlightning-transaction-sync/src/electrum.rs
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Codecov Report
✅ All modified and coverable lines are covered by tests.

✅ Project coverage is 86.79%. Comparing base (feef6a4) to head (cc1eb16).
⚠️ Report is 9 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #4341 +/- ##
=======================================
Coverage 86.78% 86.79% =======================================
Files 158 158 Lines 102788 102788 Branches 102788 102788 =======================================
+ Hits 89206 89210 +4 + Misses 11236 11232 -4 
Partials 2346 2346 
FlagCoverage Δ
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tests86.08% <ø> (+<0.01%)⬆️
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@tnull
ElectrumSyncClient: Skip unconfirmed get_history entries
cc1eb16
Electrum's `blockchain.scripthash.get_history` will return the
*confirmed* history for any scripthash, but will then also append any
matching entries from the mempool, with respective `height` fields set
to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed
`get_history` entries in the watched output case, and forgot to add such
a check also when checking for watched transactions. This would have us
treat the entry as confirmed, then failing on the `get_merkle` step
which of course couldn't prove block inclusion. Here we simply fix this
omission and skip entries that are still unconfirmed (e.g., unconfirmed
funding transactions from 0conf channels).
Signed-off-by: Elias Rohrer <dev@tnull.de>
@tnull
tnullforce-pushed
the
2026-01-electrum-improvements
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115ab6d to
cc1eb16CompareJanuary 23, 2026 18:08
@TheBlueMatt
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Backported to 0.2 in #4344
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Backported to 0.1 in #4343
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@TheBlueMatt
Merge pull request#4343from TheBlueMatt/2026-01-0.1-electrum-fix
878d7b6
[0.1] Backport #4341 and cut 0.1.9

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`ElectrumSyncClient`: Skip unconfirmed `get_history` entries by tnull · Pull Request #4341 · lightningdevkit/rust-lightning · GitHub
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ElectrumSyncClient: Skip unconfirmed get_history entries - #4341
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Electrum's blockchain.scripthash.get_history will return the confirmed history for any scripthash, but will then also append any matching entries from the mempool, with respective height fields set to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed get_history entries in the watched output case, and forgot to add such a check also when checking for watched transactions. This would have us treat the entry as confirmed, then failing on the get_merkle step which of course couldn't prove block inclusion. Here we simply fix this omission and skip entries that are still unconfirmed (e.g., unconfirmed funding transactions from 0conf channels).
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Would be kinda nice to have a test for this, but I'm okay with that just living in ldk-node
Comment threadlightning-transaction-sync/src/electrum.rs
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Codecov Report
✅ All modified and coverable lines are covered by tests.

✅ Project coverage is 86.79%. Comparing base (feef6a4) to head (cc1eb16).
⚠️ Report is 9 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #4341 +/- ##
=======================================
Coverage 86.78% 86.79% =======================================
Files 158 158 Lines 102788 102788 Branches 102788 102788 =======================================
+ Hits 89206 89210 +4 + Misses 11236 11232 -4 
Partials 2346 2346 
FlagCoverage Δ
fuzzing36.21% <ø> (ø)
tests86.08% <ø> (+<0.01%)⬆️
Flags with carried forward coverage won't be shown. Click here to find out more.
☔ View full report in Codecov by Sentry.

📢 Have feedback on the report? Share it here.
 🚀 New features to boost your workflow: 
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@tnull
ElectrumSyncClient: Skip unconfirmed get_history entries
cc1eb16
Electrum's `blockchain.scripthash.get_history` will return the
*confirmed* history for any scripthash, but will then also append any
matching entries from the mempool, with respective `height` fields set
to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed
`get_history` entries in the watched output case, and forgot to add such
a check also when checking for watched transactions. This would have us
treat the entry as confirmed, then failing on the `get_merkle` step
which of course couldn't prove block inclusion. Here we simply fix this
omission and skip entries that are still unconfirmed (e.g., unconfirmed
funding transactions from 0conf channels).
Signed-off-by: Elias Rohrer <dev@tnull.de>
@tnull
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`ElectrumSyncClient`: Skip unconfirmed `get_history` entries by tnull · Pull Request #4341 · lightningdevkit/rust-lightning · GitHub
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Electrum's blockchain.scripthash.get_history will return the confirmed history for any scripthash, but will then also append any matching entries from the mempool, with respective height fields set to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed get_history entries in the watched output case, and forgot to add such a check also when checking for watched transactions. This would have us treat the entry as confirmed, then failing on the get_merkle step which of course couldn't prove block inclusion. Here we simply fix this omission and skip entries that are still unconfirmed (e.g., unconfirmed funding transactions from 0conf channels).
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Would be kinda nice to have a test for this, but I'm okay with that just living in ldk-node
Comment threadlightning-transaction-sync/src/electrum.rs
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@@ Coverage Diff @@## main #4341 +/- ##
=======================================
Coverage 86.78% 86.79% =======================================
Files 158 158 Lines 102788 102788 Branches 102788 102788 =======================================
+ Hits 89206 89210 +4 + Misses 11236 11232 -4 
Partials 2346 2346 
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ElectrumSyncClient: Skip unconfirmed get_history entries
cc1eb16
Electrum's `blockchain.scripthash.get_history` will return the
*confirmed* history for any scripthash, but will then also append any
matching entries from the mempool, with respective `height` fields set
to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed
`get_history` entries in the watched output case, and forgot to add such
a check also when checking for watched transactions. This would have us
treat the entry as confirmed, then failing on the `get_merkle` step
which of course couldn't prove block inclusion. Here we simply fix this
omission and skip entries that are still unconfirmed (e.g., unconfirmed
funding transactions from 0conf channels).
Signed-off-by: Elias Rohrer <dev@tnull.de>
@tnull
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, 'i');
if (__m === '*' || __re.test(location.href)) {
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`ElectrumSyncClient`: Skip unconfirmed `get_history` entries by tnull · Pull Request #4341 · lightningdevkit/rust-lightning · GitHub
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Electrum's blockchain.scripthash.get_history will return the confirmed history for any scripthash, but will then also append any matching entries from the mempool, with respective height fields set to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed get_history entries in the watched output case, and forgot to add such a check also when checking for watched transactions. This would have us treat the entry as confirmed, then failing on the get_merkle step which of course couldn't prove block inclusion. Here we simply fix this omission and skip entries that are still unconfirmed (e.g., unconfirmed funding transactions from 0conf channels).
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Would be kinda nice to have a test for this, but I'm okay with that just living in ldk-node
Comment threadlightning-transaction-sync/src/electrum.rs
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Additional details and impacted files
@@ Coverage Diff @@## main #4341 +/- ##
=======================================
Coverage 86.78% 86.79% =======================================
Files 158 158 Lines 102788 102788 Branches 102788 102788 =======================================
+ Hits 89206 89210 +4 + Misses 11236 11232 -4 
Partials 2346 2346 
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@tnull
ElectrumSyncClient: Skip unconfirmed get_history entries
cc1eb16
Electrum's `blockchain.scripthash.get_history` will return the
*confirmed* history for any scripthash, but will then also append any
matching entries from the mempool, with respective `height` fields set
to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed
`get_history` entries in the watched output case, and forgot to add such
a check also when checking for watched transactions. This would have us
treat the entry as confirmed, then failing on the `get_merkle` step
which of course couldn't prove block inclusion. Here we simply fix this
omission and skip entries that are still unconfirmed (e.g., unconfirmed
funding transactions from 0conf channels).
Signed-off-by: Elias Rohrer <dev@tnull.de>
@tnull
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Backported to 0.1 in #4343
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Merge pull request#4343from TheBlueMatt/2026-01-0.1-electrum-fix
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`ElectrumSyncClient`: Skip unconfirmed `get_history` entries by tnull · Pull Request #4341 · lightningdevkit/rust-lightning · GitHub
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Electrum's blockchain.scripthash.get_history will return the confirmed history for any scripthash, but will then also append any matching entries from the mempool, with respective height fields set to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed get_history entries in the watched output case, and forgot to add such a check also when checking for watched transactions. This would have us treat the entry as confirmed, then failing on the get_merkle step which of course couldn't prove block inclusion. Here we simply fix this omission and skip entries that are still unconfirmed (e.g., unconfirmed funding transactions from 0conf channels).
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Would be kinda nice to have a test for this, but I'm okay with that just living in ldk-node
Comment threadlightning-transaction-sync/src/electrum.rs
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✅ Project coverage is 86.79%. Comparing base (feef6a4) to head (cc1eb16).
⚠️ Report is 9 commits behind head on main.
Additional details and impacted files
@@ Coverage Diff @@## main #4341 +/- ##
=======================================
Coverage 86.78% 86.79% =======================================
Files 158 158 Lines 102788 102788 Branches 102788 102788 =======================================
+ Hits 89206 89210 +4 + Misses 11236 11232 -4 
Partials 2346 2346 
FlagCoverage Δ
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tests86.08% <ø> (+<0.01%)⬆️
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@tnull
ElectrumSyncClient: Skip unconfirmed get_history entries
cc1eb16
Electrum's `blockchain.scripthash.get_history` will return the
*confirmed* history for any scripthash, but will then also append any
matching entries from the mempool, with respective `height` fields set
to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed
`get_history` entries in the watched output case, and forgot to add such
a check also when checking for watched transactions. This would have us
treat the entry as confirmed, then failing on the `get_merkle` step
which of course couldn't prove block inclusion. Here we simply fix this
omission and skip entries that are still unconfirmed (e.g., unconfirmed
funding transactions from 0conf channels).
Signed-off-by: Elias Rohrer <dev@tnull.de>
@tnull
tnullforce-pushed
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Merge pull request#4343from TheBlueMatt/2026-01-0.1-electrum-fix
878d7b6
[0.1] Backport #4341 and cut 0.1.9

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`ElectrumSyncClient`: Skip unconfirmed `get_history` entries by tnull · Pull Request #4341 · lightningdevkit/rust-lightning · GitHub
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Electrum's blockchain.scripthash.get_history will return the confirmed history for any scripthash, but will then also append any matching entries from the mempool, with respective height fields set to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed get_history entries in the watched output case, and forgot to add such a check also when checking for watched transactions. This would have us treat the entry as confirmed, then failing on the get_merkle step which of course couldn't prove block inclusion. Here we simply fix this omission and skip entries that are still unconfirmed (e.g., unconfirmed funding transactions from 0conf channels).
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Would be kinda nice to have a test for this, but I'm okay with that just living in ldk-node
Comment threadlightning-transaction-sync/src/electrum.rs
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Codecov Report
✅ All modified and coverable lines are covered by tests.

✅ Project coverage is 86.79%. Comparing base (feef6a4) to head (cc1eb16).
⚠️ Report is 9 commits behind head on main.
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@@ Coverage Diff @@## main #4341 +/- ##
=======================================
Coverage 86.78% 86.79% =======================================
Files 158 158 Lines 102788 102788 Branches 102788 102788 =======================================
+ Hits 89206 89210 +4 + Misses 11236 11232 -4 
Partials 2346 2346 
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ElectrumSyncClient: Skip unconfirmed get_history entries
cc1eb16
Electrum's `blockchain.scripthash.get_history` will return the
*confirmed* history for any scripthash, but will then also append any
matching entries from the mempool, with respective `height` fields set
to 0 or -1 (depending on whether all inputs are confirmed or not).
Unfortunately we previously only included a filter for confirmed
`get_history` entries in the watched output case, and forgot to add such
a check also when checking for watched transactions. This would have us
treat the entry as confirmed, then failing on the `get_merkle` step
which of course couldn't prove block inclusion. Here we simply fix this
omission and skip entries that are still unconfirmed (e.g., unconfirmed
funding transactions from 0conf channels).
Signed-off-by: Elias Rohrer <dev@tnull.de>
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@TheBlueMatt
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Backported to 0.2 in #4344
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Backported to 0.1 in #4343
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Merge pull request#4343from TheBlueMatt/2026-01-0.1-electrum-fix
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[0.1] Backport #4341 and cut 0.1.9

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