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Informational 18 Bitcoin

lnwallet: regenerate taproot channel test vectors

Public commit record

What the developer wrote

Authored by Olaoluwa Osuntokun

78/100 · Adequate
lnwallet: regenerate taproot channel test vectors

Regenerate `test_vectors_taproot.json` to reflect the corrected test
vector generator. Changes include actual 32-byte MuSig2 partial
signatures (replacing the dummy 8-byte DER stubs), 66-byte public
nonces for both local and remote parties, corrected HTLC sig-to-
transaction mapping sorted by BIP 69 output index, proper HTLC-success
witness layout with preimage in the correct witness slot, and the
updated trimming test case which now trims 3 of the 5 test HTLCs below
the 2500 sat dust limit (down from 5 HTLC outputs to 2).
✓ Descriptive subject✓ Names a concrete action or component✓ Provides detailed explanatory context✓ Mentions testing or verification
The short version

What changed, and why it matters

This commit only updates a single JSON file of test vectors for taproot Lightning channels. It replaces placeholder signature data with realistic values, fixes the order of test transactions, and adjusts a dust-limit test case. There is no change to production wallet or node code, so it does not directly affect live funds or network security. It is essentially a correction to the project's test fixtures.

Recommended action

No immediate action required. Treat as a test-data maintenance commit. Review the related generator code change separately if it exists, since this commit only consumes the regenerated vectors.

Security signals we found

01

Test-vector-only change

02

Fixes incorrect MuSig2 partial signature stubs

03

Fixes HTLC-success witness preimage placement

04

Corrects BIP-69 output ordering in test fixtures

05

Adjusts dust-limit trimming test parameters

Risk score

Why this scored 18/100

Our methodology →
Potential impact 2/30
Exploitability 1/25
Stealth signal 1/15
Affected reach 2/15
Confidence 8/10
Evidence quality 4/5
Human-validated context

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