Pith Number

pith:U4V5HEAL

pith:2026:U4V5HEALAV5RN3LLDPHY5QYF43

not attested not anchored not stored refs pending

Next-Gen CAPTCHAs: Leveraging the Cognitive Gap for Scalable and Diverse GUI-Agent Defense

Jiacheng Cui, Jiacheng Liu, Xiaohan Zhao, Xinyi Shang, Yaxin Luo, Zhiqiang Shen

arxiv:2602.09012 v2 · 2026-02-09 · cs.LG · cs.AI · 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{U4V5HEALAV5RN3LLDPHY5QYF43}

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	2026-06-23T02:13:20.832855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a72bd3900b057b16ed6b1bcf8ec305e6ce3b37ab5e83da8ecde8dea6ba704e42

Aliases

arxiv: 2602.09012 · arxiv_version: 2602.09012v2 · doi: 10.48550/arxiv.2602.09012 · pith_short_12: U4V5HEALAV5R · pith_short_16: U4V5HEALAV5RN3LL · pith_short_8: U4V5HEAL

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/U4V5HEALAV5RN3LLDPHY5QYF43 \
  | 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: a72bd3900b057b16ed6b1bcf8ec305e6ce3b37ab5e83da8ecde8dea6ba704e42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "326971b30469ac17640b405e47b6303f9bd28c0b5185a397a44bf0170852c903",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-02-09T18:55:33Z",
    "title_canon_sha256": "5e90236f33626522ad95d28229ba7beb94a01ccbe8d265b9c0032075d2880f70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.09012",
    "kind": "arxiv",
    "version": 2
  }
}