{
 "number": 36143,
 "input_hash": "af0b84240f5550ca",
 "model": "openrouter/google/gemini-3.8-flash",
 "batch": false,
 "created": "2026-09-17T16:23:08+00:00",
 "provider": "Google",
 "stop_reason": "end_turn",
 "usage": {
  "input_tokens": 16316,
  "cache_creation_input_tokens": 0,
  "cache_read_input_tokens": 0,
  "output_tokens": 2329
 },
 "cost_usd": 0.02097075,
 "error": null,
 "result": {
  "display": {
   "goal": [
    "Validate and construct standard multisig descriptors from cosigner public keys",
    "Prevent errors and fund-safety hazards from manual descriptor construction"
   ],
   "reviewability": [
    "Needs rebase and author response to concept objection"
   ],
   "agreement": [
    "Concept NACK: unused helper without caller or broader workflow agreement (Sjors)",
    "Author inactive for two weeks following reviewer explanation"
   ],
   "categories": [
    {
     "name": "wallet",
     "why": [
      "P3 because it automates safe multisig descriptor generation from xpubs",
      "Multisig users benefit from validated origin info and derivation paths",
      "Tied to multisig wizard setup project but reasonably deferrable"
     ]
    }
   ]
  },
  "summary": "Adds a new helper function `CreateMultisigDescriptor()` in `src/script/descriptor.cpp` to construct ranged multipath multisig descriptors from cosigner extended public keys. It enforces key origin requirements, checks against duplicate keys or existing derivation paths, supports SegWit (wsh) and Taproot (tr with sortedmulti_a), and verifies the resulting descriptor structure with unit tests.",
  "problem": "Setting up multisig descriptor wallets currently requires manual string interpolation, risking user error with key origins, derivation paths, duplicate keys, or invalid thresholds.",
  "discussion": {
   "open_concerns": [
    "Sjors Concept NACKed adding an unused C++ helper without a caller, arguing that multisig setup should start with an external Python prototype before committing to C++ RPCs or helpers."
   ],
   "resolved_concerns": [],
   "author_status": "silent since 2026-09-02 after reviewer confirmed preference for Python prototype first"
  },
  "reviewability": {
   "state": "Stale",
   "label": "Needs rebase",
   "reason": "The PR has merge conflicts against master and the author has been silent for 14 days following a Concept NACK."
  },
  "agreement": {
   "state": "Blocked",
   "summary": "Blocked: Concept NACK from Sjors against uncalled helper; author has not replied to follow-up",
   "reason": "Sjors issued a Concept NACK stating that introducing an uncalled C++ descriptor helper is premature without an end-to-end consumer or prior Python prototyping. The author inquired about adding an RPC, Sjors reiterated preference for prototyping first, and the author has not responded.",
   "evidence": [
    "Sjors: 'Concept NACK, unless this is part of a larger end-to-end implementation (with some buy-in)... A Python utility is more flexible...'",
    "rxbryan: 'Would exposing this via an RPC in the same PR address the \"nothing uses it\" concern...'",
    "Sjors: 'I think that's the better yes [referring to Python flow first]'"
   ]
  },
  "dependencies": {
   "depends_on": [],
   "enables": [
    "#35645"
   ]
  },
  "categories": [
   {
    "name": "wallet",
    "member": true,
    "evidence": "Touches descriptor creation logic and validation in src/script/descriptor.cpp aimed at wallet multisig setup.",
    "band": "P3",
    "reason_tag": "new feature",
    "score": 0.35,
    "factors": {
     "security_stability": 1,
     "bug_severity": 0,
     "performance": 0,
     "user_value": 2,
     "leverage": 1
    },
    "rationale": "Multisig descriptor creation tooling helps prevent user errors when assembling descriptors from multiple signers. As noted in the description, 'multisig setup flows need to assemble a descriptor from collected cosigner keys without hand-crafting the descriptor string, which today means bash interpolation with no validation'. While valuable for the multisig wizard (#35645), this is a non-critical setup convenience that is reasonably deferrable."
   }
  ],
  "confidence": "high",
  "uncertainties": [],
  "needs": [],
  "card": "Adds CreateMultisigDescriptor to build and validate wsh and tr multisig descriptors from cosigner xpubs with strict origin checks. Solves the issue of manual and error-prone descriptor assembly for users setting up multisig wallets. Sjors Concept NACKed the change as premature without an end-to-end caller or prior Python workflow prototyping. The branch currently needs a rebase and has been inactive for two weeks following the discussion."
 },
 "raw_text": null
}