Pith Number

pith:KU2QVYSQ

pith:2021:KU2QVYSQ5AD2FVKK7VL6MZDSNV

not attested not anchored not stored refs pending

Fingerprinting Fine-tuned Language Models in the Wild

Nirav Diwan, Tanmoy Chakravorty, Zubair Shafiq

arxiv:2106.01703 v1 · 2021-06-03 · cs.CL · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KU2QVYSQ5AD2FVKK7VL6MZDSNV}

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	2026-07-05T02:46:03.691547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55350ae250e807a2d54afd57e664726d541ecc42069b4c2bf03e8928b35144d9

Aliases

arxiv: 2106.01703 · arxiv_version: 2106.01703v1 · doi: 10.48550/arxiv.2106.01703 · pith_short_12: KU2QVYSQ5AD2 · pith_short_16: KU2QVYSQ5AD2FVKK · pith_short_8: KU2QVYSQ

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/KU2QVYSQ5AD2FVKK7VL6MZDSNV \
  | 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: 55350ae250e807a2d54afd57e664726d541ecc42069b4c2bf03e8928b35144d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f78a68baad45406e0aaa89f46abff331909d91da726359188abd846f5068f351",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-06-03T09:07:54Z",
    "title_canon_sha256": "892133454501d851aaf924c34947461eb66cbba6e2dac6f78c06a63a8ecd804d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.01703",
    "kind": "arxiv",
    "version": 1
  }
}