Pith Number

pith:DIT6Z4Q3

pith:2026:DIT6Z4Q3D6LBUMWPE6JTI47EC5

not attested not anchored not stored refs pending

Repeated post-training is not Self-improving: Diagnosing Scientific Amnesia in Continual DPO Pipelines

Fei Wang, Jianzhe Lin, Jubin Chheda, Rajeshkumar Golani, Xiaolin Li

arxiv:2606.21089 v1 · 2026-06-17 · 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{DIT6Z4Q3D6LBUMWPE6JTI47EC5}

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	2026-06-23T01:12:29.527486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a27ecf21b1f961a32cf27933473e4174c6c014886c79fce426dffa729557dc2

Aliases

arxiv: 2606.21089 · arxiv_version: 2606.21089v1 · doi: 10.48550/arxiv.2606.21089 · pith_short_12: DIT6Z4Q3D6LB · pith_short_16: DIT6Z4Q3D6LBUMWP · pith_short_8: DIT6Z4Q3

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/DIT6Z4Q3D6LBUMWPE6JTI47EC5 \
  | 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: 1a27ecf21b1f961a32cf27933473e4174c6c014886c79fce426dffa729557dc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e0896f1c68739baa7f8906fe6367eb7314f1cb970388b07d94a987dc64f6f17",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-06-17T18:02:03Z",
    "title_canon_sha256": "b55397438fe6e31e354f260d8763cf8464fc7d2a59252f4273161b78c569c31b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.21089",
    "kind": "arxiv",
    "version": 1
  }
}