Pith Number

pith:4MWPJK5L

pith:2026:4MWPJK5LSBBGNDONXVG5KYM7CG

not attested not anchored not stored refs pending

PreUnlearn: Auditing Collateral Knowledge Damage Before Large Language Model Unlearning

Ankit Shah, Bo Su, Thai Le

arxiv:2606.18473 v1 · 2026-06-16 · 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{4MWPJK5LSBBGNDONXVG5KYM7CG}

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	2026-06-19T16:11:02.022939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e32cf4abab9042668dcdbd4dd5619f1181e776078e4c4a6223341f9f493ce9b9

Aliases

arxiv: 2606.18473 · arxiv_version: 2606.18473v1 · doi: 10.48550/arxiv.2606.18473 · pith_short_12: 4MWPJK5LSBBG · pith_short_16: 4MWPJK5LSBBGNDON · pith_short_8: 4MWPJK5L

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/4MWPJK5LSBBGNDONXVG5KYM7CG \
  | 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: e32cf4abab9042668dcdbd4dd5619f1181e776078e4c4a6223341f9f493ce9b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e97f8d6b11543ca3d767070304f7a23e5486628c3603943aefa195a662f0e4f8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-06-16T20:32:11Z",
    "title_canon_sha256": "714da583c715a788993d535bef9b1edb29c24f474d0f45d48dda77b12044b1c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.18473",
    "kind": "arxiv",
    "version": 1
  }
}