Pith Number

pith:PXWGPF5Z

pith:2026:PXWGPF5Z7OYW62O5FNDUZTDLKM

not attested not anchored not stored refs pending

Auditing Reasoning-Trace Memorization Claims after Unlearning with Head-Conditioned Canaries

Yanhang Li, Zexin Zhuang, Zhichao Fan

arxiv:2605.18891 v1 · 2026-05-17 · 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{PXWGPF5Z7OYW62O5FNDUZTDLKM}

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	2026-05-20T00:06:30.769804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dec6797b9fbb16f69dd2b474ccc6b5333b1692b33762b2833cd3f8c3a06f7f2

Aliases

arxiv: 2605.18891 · arxiv_version: 2605.18891v1 · doi: 10.48550/arxiv.2605.18891 · pith_short_12: PXWGPF5Z7OYW · pith_short_16: PXWGPF5Z7OYW62O5 · pith_short_8: PXWGPF5Z

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/PXWGPF5Z7OYW62O5FNDUZTDLKM \
  | 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: 7dec6797b9fbb16f69dd2b474ccc6b5333b1692b33762b2833cd3f8c3a06f7f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e946854035a9506b8a255c7386908b8ecb5c53012faf030bbd027cdeff387d85",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-17T05:22:27Z",
    "title_canon_sha256": "f59ccb1207108d425d887e3f30ce18b6afbfebc33990c052a0bfa11782560012"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.18891",
    "kind": "arxiv",
    "version": 1
  }
}