Pith Number

pith:INDPCBGX

pith:2026:INDPCBGX2LK5FJMQKRD6GOPZTD

not attested not anchored not stored refs pending

An Embarrassingly Simple Detector for Model Extraction Attacks in Large Language Model API Traffic

Qianwen Guo, Shuze Liu, Yushun Dong

arxiv:2606.05725 v1 · 2026-06-04 · cs.CR · 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{INDPCBGX2LK5FJMQKRD6GOPZTD}

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	2026-06-05T01:15:00.824475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4346f104d7d2d5d2a5905447e339f998d33a24de9cc2a5562054590ae2a41048

Aliases

arxiv: 2606.05725 · arxiv_version: 2606.05725v1 · doi: 10.48550/arxiv.2606.05725 · pith_short_12: INDPCBGX2LK5 · pith_short_16: INDPCBGX2LK5FJMQ · pith_short_8: INDPCBGX

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/INDPCBGX2LK5FJMQKRD6GOPZTD \
  | 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: 4346f104d7d2d5d2a5905447e339f998d33a24de9cc2a5562054590ae2a41048

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87ea2e6a065d69e523bd23cf62bda6b7bf62b10005b18ecd8cbbe818110316a1",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-06-04T05:33:49Z",
    "title_canon_sha256": "f4c1d8c583d03fcbc6d4f8e45cce689e7a704995f8e22b3643b752311941b99b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.05725",
    "kind": "arxiv",
    "version": 1
  }
}