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Low 28 Bitcoin

txscript: update tx_valid.json from Bitcoin Core

Public commit record

What the developer wrote

Authored by Olaoluwa Osuntokun

70/100 · Adequate
txscript: update tx_valid.json from Bitcoin Core

Updated from Bitcoin Core master
(e32bc7f817e7adeffef22a985bf8dbd4aa3e08d8), file
src/test/data/tx_valid.json.
✓ Descriptive subject✓ Names a concrete action or component✓ Provides an explanatory body✓ Mentions testing or verification
The short version

What changed, and why it matters

This commit updates a single test data file (tx_valid.json) used by btcd's transaction-script test suite, syncing it with a newer version from Bitcoin Core. It changes test cases and the verification flags they are labeled with, but does not modify any production code. On its own, this is a test-maintenance change and not a direct security patch. However, the new test vectors are designed to exercise stricter signature rules (DERSIG, LOW_S, STRICTENC, NULLDUMMY, CONST_SCRIPTCODE, etc.) and segwit behavior. If btcd's script engine already enforces those rules, the tests should pass; if it does not, the updated tests would reveal discrepancies. The commit therefore signals an effort to keep btcd aligned with Bitcoin Core's consensus and standardness rules, which has indirect security relevance, but it does not by itself fix or introduce a vulnerability.

Recommended action

Run the txscript test suite against the updated tx_valid.json to confirm all new vectors pass. If failures appear, audit the corresponding script-engine code for missing or incorrect enforcement of the flagged rules before relying on this node for consensus-critical operations. Treat this as a test-hygiene commit rather than an emergency patch.

Security signals we found

01

Test data synchronized with upstream Bitcoin Core to cover stricter signature and script validation rules

02

New/updated test vectors target DERSIG, LOW_S, STRICTENC, NULLDUMMY, CONST_SCRIPTCODE, CLEANSTACK, NULLFAIL, SIGPUSHONLY, MINIMALDATA, and segwit flags

03

No production code changes; risk depends on whether btcd's implementation already matches the imported expectations

04

Potential indicator of broader consensus-correctness work, but this commit alone is not a fix

Risk score

Why this scored 28/100

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

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