Pith Number

pith:L5MTOFG7

pith:2026:L5MTOFG7AMP5P6QFTK7B7UQAWJ

not attested not anchored not stored refs pending

On the Hidden Costs of Counterfactual Knowledge Training in LLM Unlearning

Mengqi Zhang, Shu Wu, Xiaohan Wang, Xiaotian Ye

arxiv:2605.27083 v1 · 2026-05-26 · cs.CL · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L5MTOFG7AMP5P6QFTK7B7UQAWJ}

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	2026-05-27T01:06:27.386749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f593714df031fd7fa059abe1fd200b27f46b05adead663dbd72009b9927aecb

Aliases

arxiv: 2605.27083 · arxiv_version: 2605.27083v1 · doi: 10.48550/arxiv.2605.27083 · pith_short_12: L5MTOFG7AMP5 · pith_short_16: L5MTOFG7AMP5P6QF · pith_short_8: L5MTOFG7

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/L5MTOFG7AMP5P6QFTK7B7UQAWJ \
  | 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: 5f593714df031fd7fa059abe1fd200b27f46b05adead663dbd72009b9927aecb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85ecd05f4a2e584a1575defef7dafdc7fafbbe1ed4c9f759b542ffeaf154641d",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-26T14:34:14Z",
    "title_canon_sha256": "d06f3203e96a2715710495dcfcb0df65da6c0476541547ddf04455dd495e4058"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.27083",
    "kind": "arxiv",
    "version": 1
  }
}