Pith Number

pith:2J3S5VKC

pith:2026:2J3S5VKCSUSCGZ4A5NDZGO45CZ

not attested not anchored not stored refs pending

GrandGuard: Taxonomy, Benchmark, and Safeguards for Elderly-Chatbot Interaction Safety

Bin Zhou, Changxuan Fan, Dazhao Du, Haoran Li, Huihao Jing, Janet Hui-wen Hsiao, Ki Sen Hung, Wenbin Hu, Xi Yang, Yangqiu Song, Yuanping Wang, Yueyuan Zheng

arxiv:2605.20203 v1 · 2026-04-07 · cs.HC · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2J3S5VKCSUSCGZ4A5NDZGO45CZ}

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	2026-05-21T00:04:20.938282Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2772ed5429524236780eb47933b9d16625adae91ef961b3613c392bfb6c8592

Aliases

arxiv: 2605.20203 · arxiv_version: 2605.20203v1 · doi: 10.48550/arxiv.2605.20203 · pith_short_12: 2J3S5VKCSUSC · pith_short_16: 2J3S5VKCSUSCGZ4A · pith_short_8: 2J3S5VKC

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/2J3S5VKCSUSCGZ4A5NDZGO45CZ \
  | 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: d2772ed5429524236780eb47933b9d16625adae91ef961b3613c392bfb6c8592

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff98787f8243e64451922335f0a4056b75411240ee333f5fe76f8f7459654a71",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2026-04-07T14:26:40Z",
    "title_canon_sha256": "bd062bf9d9e3293d9378f93160cf02397727d8538cf00db31103158de87d2d68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20203",
    "kind": "arxiv",
    "version": 1
  }
}