{
 "number": 36408,
 "input_hash": "785e688853b2d4b9",
 "model": "ledger",
 "prompt_hash": null,
 "created": "2026-11-02T01:11:15+00:00",
 "result": {
  "summary": "Increases the allowed fee overestimate in the functional test assertion helper `assert_fee_amount` from 2 bytes to 3 bytes. This accounts for rare cases where low-R ECDSA signatures have leading zero bytes in their r or s components and are shorter than the 71 bytes assumed during wallet fee estimation.",
  "problem": "Functional tests checking exact fee calculations, such as `wallet_send.py`, intermittently fail in CI when an ECDSA signature is three bytes shorter than the wallet's default 71-byte estimate. The test helper asserted on at most a two-byte overestimate, causing rare false-positive CI failures.",
  "card": "Raises the fee overestimate tolerance in the functional test helper assert_fee_amount from 2 bytes to 3 bytes. The wallet estimates fee sizes assuming 71-byte low-R ECDSA signatures, but rare signatures can be up to 3 bytes shorter due to leading zeroes, causing false-positive test failures when asserting exact fees. This eliminates intermittent CI test failures in wallet_send.py demonstrated in issue #36394.",
  "evidence": [
   "Issue #36394 reported a concrete intermittent CI failure in wallet_send.py: 'AssertionError: Fee of 0.00000438 BTC too high! (Should be 0.00000432 BTC)'",
   "Earlier closed issues #24151 and #25164 document the recurrence of 'fee too high' intermittent failures in wallet_send.py."
  ],
  "scope_notes": "",
  "changed_since_previous": "No changes to the patch or commit; previous description had no patch attached.",
  "thread": {
   "last_event_at": "2026-11-01T19:04:28Z",
   "events": 2,
   "head_sha": "050409b2c5522eff0dc37c00a6d1225a8a437e17",
   "schema_floor": 2,
   "schema": 2
  },
  "waiting_on": [
   {
    "at": null,
    "id": "",
    "on": "nothing",
    "url": null,
    "what": "no pending requests or questions"
   }
  ],
  "risk": {
   "level": "low",
   "touches": [
    "tests"
   ],
   "why": "A mistake only affects functional test fee assertion tolerances in the test framework."
  },
  "discussion": {
   "author_status": "last statement processed 2026-11-01",
   "open_concerns": [],
   "resolved_concerns": []
  },
  "reviewability": {
   "state": "Ready",
   "label": "Ready",
   "reason": "Nothing known that would invalidate a review now."
  },
  "agreement": {
   "state": "Strong",
   "summary": "Strong: substantive support, no open objection (Ayoazeez26)",
   "reason": "Author clarified that the test_maxfeerate failure in testing was due to the synthetic reproduction method rather than the PR; no new claims were raised.",
   "evidence": [
    "Ayoazeez26: Tested ACK \u2014 Verified that raising the allowance to 3 bytes resolves the failure by artificially forcing a 3-byte overestimate"
   ],
   "objections": [],
   "support": [
    {
     "reviewer": "Ayoazeez26",
     "reason": "Verified that raising the allowance to 3 bytes resolves the failure by artificially forcing a 3-byte overestimate",
     "substantive": true,
     "verdict": "Tested ACK",
     "id": "c:5981997800",
     "url": "https://github.com/bitcoin/bitcoin/pull/36408#issuecomment-5981997800",
     "at": "2026-10-04",
     "association": "NONE",
     "evidence": "tested",
     "areas": []
    }
   ],
   "participants": [
    {
     "login": "Ayoazeez26",
     "stance": "support",
     "note": "Tested ACK with synthetic reproduction",
     "association": "NONE",
     "comments": 1,
     "first": "2026-10-04",
     "last": "2026-10-04"
    }
   ],
   "derivation": "substantive support, no open objection (Ayoazeez26)",
   "model_state": null,
   "corrections": [],
   "notes": "Author clarified that the test_maxfeerate failure in testing was due to the synthetic reproduction method rather than the PR; no new claims were raised."
  },
  "dependencies": {
   "depends_on": [],
   "enables": []
  },
  "categories": [
   {
    "name": "tests",
    "member": true,
    "evidence": "Matches the 'Tests' label and modifies `test/functional/test_framework/util.py` to fix intermittent test failures.",
    "band": "P2",
    "reason_tag": "bug fix",
    "score": 0.55,
    "factors": {
     "bug_severity": 1,
     "leverage": 1,
     "performance": 0,
     "security_stability": 0,
     "user_value": 0
    },
    "rationale": "Fixes a recurring source of intermittent CI failures in the functional test framework assertion helper. According to issue #36394 and past issues (#24151, #25164), `wallet_send.py` fails when rare low-R ECDSA signatures are three bytes shorter than the default estimate, triggering false-positive test failures."
   }
  ],
  "confidence": "high",
  "uncertainties": [],
  "needs": []
 },
 "cost_usd": 0.0,
 "source": {
  "record": "2026-11-02T01:11:15+00:00",
  "code": "2026-10-04T01:20:31+00:00",
  "judgments": 1
 }
}