Pith Number

pith:GAJBJY6Z

pith:2025:GAJBJY6ZBO6SPFRAC2MAJ2T73W

not attested not anchored not stored refs pending

CoTSRF: Utilize Chain of Thought as Stealthy and Robust Fingerprint of Large Language Models

Guobiao Li, Sheng Li, Xinpeng Zhang, Zhenxing Qian, Zhenzhen Ren

arxiv:2505.16785 v1 · 2025-05-22 · cs.CR · 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{GAJBJY6ZBO6SPFRAC2MAJ2T73W}

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.

Cited by

3 papers in Pith

FLIPS: Instance-Fingerprinting for LLMs via Pseudo-random Sequences

Fingerprinting LLMs via Prompt Injection

Receipt and verification

First computed	2026-07-05T11:07:41.153392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

301214e3d90bbd279620169804ea7fdd8789d0ef0709c8d3c6aa9a39dcfbc849

Aliases

arxiv: 2505.16785 · arxiv_version: 2505.16785v1 · doi: 10.48550/arxiv.2505.16785 · pith_short_12: GAJBJY6ZBO6S · pith_short_16: GAJBJY6ZBO6SPFRA · pith_short_8: GAJBJY6Z

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/GAJBJY6ZBO6SPFRAC2MAJ2T73W \
  | 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: 301214e3d90bbd279620169804ea7fdd8789d0ef0709c8d3c6aa9a39dcfbc849

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f0eccf42fe0dddffbcdb8663a61440b536ff958bb84b584d532cae7d3ede52b",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-05-22T15:28:25Z",
    "title_canon_sha256": "e5ba987fc95ea09507424000b8b5910971e468bf4e3cf7cf7b36ad838bea245f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.16785",
    "kind": "arxiv",
    "version": 1
  }
}