Pith Number

pith:BATXQZ7X

pith:2026:BATXQZ7XQFGLFQ66PE5M52DCUD

not attested not anchored not stored refs pending

From Unfamiliar to Familiar: Detecting Pre-training Data via Gradient Deviations in Large Language Models

Hainan Zhang, Lingxiang Wang, Ruiqi Zhang, Yanyan Lan, Zhiming Zheng

arxiv:2603.04828 v2 · 2026-03-05 · 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{BATXQZ7XQFGLFQ66PE5M52DCUD}

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	2026-06-02T01:03:44.627665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08277867f7814cb2c3de793acee862a0debc79a836179a59a46d6a84bf78d732

Aliases

arxiv: 2603.04828 · arxiv_version: 2603.04828v2 · doi: 10.48550/arxiv.2603.04828 · pith_short_12: BATXQZ7XQFGL · pith_short_16: BATXQZ7XQFGLFQ66 · pith_short_8: BATXQZ7X

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/BATXQZ7XQFGLFQ66PE5M52DCUD \
  | 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: 08277867f7814cb2c3de793acee862a0debc79a836179a59a46d6a84bf78d732

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad7e636f9c1ab5cd6b4e55a1a43cbfe81b8caf7115979b4070a8e897b23fd27e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-03-05T05:21:51Z",
    "title_canon_sha256": "28a6c8382b2eae2d58042c64a6a0fe35cb25751f3e6aa9ff250eff15f39d5b04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.04828",
    "kind": "arxiv",
    "version": 2
  }
}