Pith Number

pith:BWN5XYRI

pith:2025:BWN5XYRIOSY5CUVINW5LPLCPYQ

not attested not anchored not stored refs pending

UAQFact: Evaluating Factual Knowledge Utilization of LLMs on Unanswerable Questions

Chuanyuan Tan, Hao Xiong, Kai Shi, Tong Zhu, Wenbiao Shao, Wenliang Chen, Zhenhua Liu

arxiv:2505.23461 v1 · 2025-05-29 · cs.CL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BWN5XYRIOSY5CUVINW5LPLCPYQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T11:12:02.175452Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d9bdbe22874b1d152a86dbab7ac4fc437a740fb7868ee393f447a90b69e1d4b

Aliases

arxiv: 2505.23461 · arxiv_version: 2505.23461v1 · doi: 10.48550/arxiv.2505.23461 · pith_short_12: BWN5XYRIOSY5 · pith_short_16: BWN5XYRIOSY5CUVI · pith_short_8: BWN5XYRI

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/BWN5XYRIOSY5CUVINW5LPLCPYQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 0d9bdbe22874b1d152a86dbab7ac4fc437a740fb7868ee393f447a90b69e1d4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd94dc94d9659d0ec71d86e5b560e92cb7f9a9a5af601379668b5f1549179f59",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-05-29T14:10:24Z",
    "title_canon_sha256": "18a1a82d7ee0344433a04926a641a951585815d8ea4697f8e69b95c7b5a5a1b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.23461",
    "kind": "arxiv",
    "version": 1
  }
}