Pith Number

pith:SWBMIIEI

pith:2025:SWBMIIEIS6OPCXSSHAB6E5VWL2

not attested not anchored not stored refs pending

Lethe: Purifying Backdoored Large Language Models with Knowledge Dilution

Chen Chen, Jiaxin Gao, Kwok-Yan Lam, Qian Wang, Xueluan Gong, Yongsen Zheng, Yuchen Sun, Ziyao Wang

arxiv:2508.21004 v1 · 2025-08-28 · 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{SWBMIIEIS6OPCXSSHAB6E5VWL2}

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	2026-07-05T12:01:15.082715Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9582c42088979cf15e523803e276b65ea917f911dcd5c75e34592f49d41cc942

Aliases

arxiv: 2508.21004 · arxiv_version: 2508.21004v1 · doi: 10.48550/arxiv.2508.21004 · pith_short_12: SWBMIIEIS6OP · pith_short_16: SWBMIIEIS6OPCXSS · pith_short_8: SWBMIIEI

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/SWBMIIEIS6OPCXSSHAB6E5VWL2 \
  | 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: 9582c42088979cf15e523803e276b65ea917f911dcd5c75e34592f49d41cc942

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffb9e02424286b8737b36124dcaafde9e5b0f44fa1d2666f623936fa010e18d8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-08-28T17:05:18Z",
    "title_canon_sha256": "0e145b901c50d0eb2f17c8dc59385a115e15e67462faab4878d5059e1cca0b88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.21004",
    "kind": "arxiv",
    "version": 1
  }
}