ln-symmetry with BIP448#1

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instagibbs wants to merge 310 commits into

bip448:masterfrom

instagibbs:2026-01-eltoo_templatehash

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Commits on Jan 15, 2026

Fix annex creation
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updating libwally
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Thread annex through to sign_tx_taproot_input
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Don't crudely embed annex witness data in PSBT
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Complete MuSig signing example in update tx test
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Maybe signed update tx in test
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Funding output only has one script
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actually populate the tap merkle root for update funding spend
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Fix control block for funding update
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Fixup signatures a bit for update tx
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Incorrect miniscript...
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Fix test signing of update tx
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Refactor update transaction flow to follow actual rebinding flow
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Implement annex hint stuff for update to update tx
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Rename initial_update_tx to update_tx since it's not just initial
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Delete the copious amount of printing for debugging
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Outpoint doesnt make sense to set for non-initial settlement tx
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Checkin
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Compiling through
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Print out 2nd settlement tx
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Spec wrong, and me being wrong...
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F
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Check in work
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openingd_eltoo messages compiling
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Delete reserve requirements from eltoo
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Add new files
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Remove rest of reserve requirement stuff for eltoo
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more reserve removing
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add check_eltoo_config_bounds
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Create funding script helper, use in funder_channel_start
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More openingd compiling
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Fixup fromwire_openingd_eltoo_funder_start
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finish up handle_master_in
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All FIXMEs except p2p messages done
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Add eltoo peer wire changes
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fixup
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working through compilation....
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Partial sig stuff compiling
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All wire messages implemented for openingd eltoo
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Validation wire
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Make eltoo BOLT processing more narrow
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Synchonize sighash usage
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compiling
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both funding paths done?
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Add nonce to shutdown_eltoo message
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Update HSM signing protocol
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Checking
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fixup
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Implement hsm eltoo channel ready msg
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Set hsmd eltoo capabilitiy to HSM_CAP_MASTER
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Start implementing partial signature for update tx in hsmd
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Merge the two peer BOLTs into one CSV
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Look for ELTOO opener
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Refactor everything to use compressed pubkeys except JIT blockchain usage
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replyreply
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fixup null ptrs for keyagg_cache
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Psigs have stringified
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Don't use eltoo_keyset in openenind, yet
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Fixups, why didn't channel reserve stop working long ago....
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Generate nonce for channel
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Get peer_ir and dbid from hsm_client...?
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Start adding eltoo channeld stuff
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put nonces into keyset
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put nonces into keyset
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Stuff compiling, reworked musig session flow
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Many changes
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start compiling
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more compiling
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eltoo_channeld starting to compile
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Adding more files
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get rid of eltoo_channel_config
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Working on compiling/deduping...
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eltoo_channeld compiling
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Thread through some more reestablishment state
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fixup extra shared_delay serialization
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set eltoo channel to false for now
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More motion towards eltoo fundchannel
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Try threading through settle pubkey from hsmd
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bunch of stuff
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keyset shenanigans for opening
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keyset shenanigans for opening
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stop sending hsmd messages to peers...
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more bullish errors
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workshop delays in config
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enable printing of partial sigs
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nice bug
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save progress
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Nonces working
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Maybe will fire off normal channel operation
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failing at channeld creation :)
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maybe eltoo_channeld starts
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more settle key stuff
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Thinking of removing settle_pubkey in favor or remote basepoint
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Attempt to reuse payment basepoint as settle pubkey
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lock-in sanity checks for 2-of-2 CMS failing
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disable sanity checks and signature announcements for now
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reloading working a bit
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shared_delay seems to be loading properly
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refactor bind_update_tx_to_* to take bip340sig
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onchaind explodes when it sees update tx, yay
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put obvioulsy bogus prevout in settlement tx instead of funding output(wrong)
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eltoo CHANNELD_NORMAL achieved
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dev-debgger causing msg issues, working on htlc
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Rework what data is passed from opening to channel... explosions surely
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Back to where I was before with paying invoice broken
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Try to move htlc resolution forward
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Getting all the way to ACK construction
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Push forward on responding to updatesig
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ACK being received, stalling after
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Some more ACK handling
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Checkin HTLC work, MuSig for htlc removal failing
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Trivial single payment is clearing
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l2-cli now sees the htlc as resolving, working on l1-cli
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Comment out unknown things
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Remove pubnonce storage from hsmd
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Multichannel musig working?
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test script with three nodes going
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single hop example working
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Bit more logging for debugging
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Create eltoo_onchaind, need to auto-rebind update/settle tx still
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Enough to trigger and explode the new subd
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eltoo_onchaind is alive
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Expose update/settle txs in rpc, propagate txs to onchaind
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RPC endpoint serving up funding-output-bound update/settle txs
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rework rebinding a bit
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Implement bind_txs_to_funding_outpoint with sane interface for funding output spend scenario
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lightning now fires off funding output bound update tx when channel fails
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eltoo_onchaind: track funding output
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oops, add eltoo onchaind
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Compiling with some close handling
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Stick closer to the legacy flow for now
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Stuff crashing because I'm not handling eltoo_onchaind responses...
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Start handling a bunch more messages
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Send committed but not completed transactions to lightningd
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moved around tx signing state to aid support for committed but not complete states
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f
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pass around committed state all the way to onchaind
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Wrong enum for ELTOO_UPDATE
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Add binding of settlement tx for onchaind
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Mutual close is locktime of 0
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migrate more over to eltoo
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fixup tx type
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Basic settlement broadcasting works
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Sync up tx format with BOLT, update handling
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Fixup state updates in lightningd, both eltoo_onchainds should match state now
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Fixup eltoo_onchaind lifetime of htlc scripts
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eltoo_onchaind resolves when no htlcs left
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fixup unit test with updated tx format
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Add locktime to onchaind_spent message
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test success message
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maybe support initial rebinding of invalidated update transactions
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propose fixed update tx
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Testing out handling old updates for funding output spend
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add/remove comments
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Expose rebound update txns over RPC, fix some bugs
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Add untested hooks to introspect committed settle tx in RPC
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onchaind state machine up to HTLC resolution
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Add htlc feerate to eltoo_onchaind
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HTLC timeout resolution implemented except for final witness construction
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Create witness construction for HTLC resolutions
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Implement HTLC success txns
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Cache preimages prior to settle phase
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Add schema changes for eltoo json
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Start some proper testing of HTLC resolution
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more test
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HTLC resolution crashing now
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Stuff to revert?
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some notes
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fix ripemd of htlc payment hash, reorder keys for contract
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Don't sizeof a pointer...
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fixup add_eltoo_htlc_out side arg, revert key ordering
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Both HTLC txns being handled... and crashing in hsmd
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fixup some hsmd signing stuff
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unroll taphashing, more printing
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Add more belt and suspender check for tapleafs
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WRONG PUBKEYS OMG
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F
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HTLC txns are being mined/replaced
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Fix preimage fetching from success tx
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Test runs until end... plus memory leaks
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Test runs until end... plus memory leaks
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Test runs until end... plus memory leaks
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cleanup htlc eltoo test
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cleanup htlc eltoo test
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Tests for all working scenarioes
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Silence memory leaks
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f
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Implement turn-taking ala Simplified Update
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Fixup eltoo_channeld transaction tracking
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Start implementing reconnection logic
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Maybe implemented channel reestablishment
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Start writing test for reestablishment
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Move eltoo tests to own thing
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oops s/gen/regen/
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test_eltoo_offerer_ack_reestablishment failing with bad combine_psig message
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ostensibly complete basic reestablishment tests
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Fixup committed state in lightningd
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test_eltoo_offerer_ack_reestablishment working
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Add some asserts that should break in other cases
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More plausible support for reestablishments during htlc removal
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Test another uncommited reestablishment scenario
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fixup one test where it breaks
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uneven test working, need to cleanup keyagg cache lifecycle
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Send failures instead of crashing hsmd on combine failure
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rephrase
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untested: fix the commit-to-no-taptree musig implementation
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Revert "untested: fix the commit-to-no-taptree musig implementation"
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Adapt eltoo implementation to bitcoin-inquisition annex support
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fixup compute_control_block
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Have update txns get an ephemeral anchor, remove test's prioritisetransaction call
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vibe mempool updates
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fixup regression test
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Commits on Jan 17, 2026

Commits on Jan 23, 2026

test: Add coverage for non-funding update tx spend
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OP_TEMPLATEHASH migration compiles, passes unit test
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Uh oh!

Commits

Commits on Jan 15, 2026