Pith Number

pith:CXFTK4TL

pith:2025:CXFTK4TLNZ7F65OGRA2ZENKB2X

not attested not anchored not stored refs pending

Fight Fire with Fire: Defending Against Malicious RL Fine-Tuning via Reward Neutralization

Wenjun Cao

arxiv:2505.04578 v1 · 2025-05-07 · cs.LG · 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{CXFTK4TLNZ7F65OGRA2ZENKB2X}

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

1 paper in Pith

Token Buncher: Shielding LLMs from Harmful Reinforcement Learning Fine-Tuning

Receipt and verification

First computed	2026-07-05T10:59:54.114565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15cb35726b6e7e5f75c68835923541d5f6d1ae0bad5344287b7f56adfd02c7c8

Aliases

arxiv: 2505.04578 · arxiv_version: 2505.04578v1 · doi: 10.48550/arxiv.2505.04578 · pith_short_12: CXFTK4TLNZ7F · pith_short_16: CXFTK4TLNZ7F65OG · pith_short_8: CXFTK4TL

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/CXFTK4TLNZ7F65OGRA2ZENKB2X \
  | 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: 15cb35726b6e7e5f75c68835923541d5f6d1ae0bad5344287b7f56adfd02c7c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4da9a12fa614291c90dfc9cc3d1708c6affb25617f17f5b59d811a1e74a74abc",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-05-07T17:18:48Z",
    "title_canon_sha256": "bebb938a02d07e22ceb13799065bb32a158da04327390e7919ffbe8c73847658"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.04578",
    "kind": "arxiv",
    "version": 1
  }
}