Pith Number

pith:JSA52KUW

pith:2025:JSA52KUWCV4OTESMU2XMFF27OM

not attested not anchored not stored refs pending

Winter Soldier: Backdooring Language Models at Pre-Training with Indirect Data Poisoning

El-Mahdi El-Mhamdi, Mathurin Videau, Nicolas Usunier, Wassim Bouaziz

arxiv:2506.14913 v1 · 2025-06-17 · cs.CR · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JSA52KUWCV4OTESMU2XMFF27OM}

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	2026-07-05T11:23:33.961560Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c81dd2a961578e9924ca6aec2975f73295ec4c9ca2229212b09a01cf2ad7c18

Aliases

arxiv: 2506.14913 · arxiv_version: 2506.14913v1 · doi: 10.48550/arxiv.2506.14913 · pith_short_12: JSA52KUWCV4O · pith_short_16: JSA52KUWCV4OTESM · pith_short_8: JSA52KUW

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/JSA52KUWCV4OTESMU2XMFF27OM \
  | 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: 4c81dd2a961578e9924ca6aec2975f73295ec4c9ca2229212b09a01cf2ad7c18

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e8a588feb9ba5b3eca498c8ac4fbaf66a086e2c038a7cbcddc3f38e4a3f7c65",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-06-17T18:46:45Z",
    "title_canon_sha256": "08e82dab19eca53cf60637264b2657caf17400827d2e8a4ab5a56909393d92b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.14913",
    "kind": "arxiv",
    "version": 1
  }
}