Pith Number

pith:TUGC3AGI

pith:2025:TUGC3AGIVIIPE3JENBUF7ZDTAQ

not attested not anchored not stored refs pending

CTRAP: Embedding Collapse Trap to Safeguard Large Language Models from Harmful Fine-Tuning

Baolei Zhang, Biao Yi, Lihai Nie, Li Shen, Tiansheng Huang, Tong Li, Zheli Liu

arxiv:2505.16559 v1 · 2025-05-22 · cs.CR · 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{TUGC3AGIVIIPE3JENBUF7ZDTAQ}

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

2 papers in Pith

One Step to the Side: Why Defenses Against Malicious Finetuning Fail Under Adaptive Adversaries

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

Receipt and verification

First computed	2026-07-05T11:07:37.234465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d0c2d80c8aa10f26d2468685fe473040c8676eed5f9fd5b17da97a531d455b5

Aliases

arxiv: 2505.16559 · arxiv_version: 2505.16559v1 · doi: 10.48550/arxiv.2505.16559 · pith_short_12: TUGC3AGIVIIP · pith_short_16: TUGC3AGIVIIPE3JE · pith_short_8: TUGC3AGI

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/TUGC3AGIVIIPE3JENBUF7ZDTAQ \
  | 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: 9d0c2d80c8aa10f26d2468685fe473040c8676eed5f9fd5b17da97a531d455b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "420cdc28c434f7bad5cdcffc581d586268528fe548c2589ad5325515e92f2a3c",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-05-22T11:47:08Z",
    "title_canon_sha256": "5ea180060627bc4f9d45d4e3d8896deb0ccbe96b3444a3e3979b5d34801a968b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.16559",
    "kind": "arxiv",
    "version": 1
  }
}