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Low 35 Bitcoin

Update `bitcoin-lib` (#3179)

AQ2b39bf62 View source ↗
Public commit record

What the developer wrote

Authored by Bastien Teinturier

58/100 · Thin
Update `bitcoin-lib` (#3179)

And simplify musig2 nonce using Scala classes.
✓ Descriptive subject✓ Provides an explanatory body✓ Links an issue, advisory, or supporting reference
The short version

What changed, and why it matters

This commit updates Eclair's underlying bitcoin-lib dependency from version 0.41 to 0.43.2 and adjusts Eclair's code to match the new library's API. The changes are mostly mechanical: switching how Musig2 nonces and Taproot script trees are represented, removing Kotlin-to-Scala conversion helpers, and updating Maven checksums. There is no explicit mention of a security fix in the commit message or diff, and no independent security advisory was supplied. The update could include upstream security fixes, but that is speculation based on the version bump, not direct evidence in this commit.

Recommended action

Review the bitcoin-lib 0.43.2 and secp256k1-kmp 0.19.0 release notes or changelog for security fixes. Verify that the new library artifacts match the updated checksums and that no breaking API changes were missed. Run the full test suite, especially MuSig2 and Taproot channel tests, before deploying. If the upstream release contains security fixes, prioritize deployment and consider issuing a security notice.

Security signals we found

01

Dependency version bump of core cryptographic library (bitcoin-lib 0.41 -> 0.43.2, secp256k1-kmp 0.18.0 -> 0.19.0)

02

Refactoring of MuSig2 nonce handling and Taproot script tree construction

03

Removal of Kotlin interop conversions around cryptographic types

04

No explicit security claim, CVE reference, or advisory text in commit message or diff

Risk score

Why this scored 35/100

Our methodology →
Potential impact 8/30
Exploitability 5/25
Stealth signal 5/15
Affected reach 10/15
Confidence 4/10
Evidence quality 3/5
Human-validated context

Community notes

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