Pith Number

pith:PBNEBYWP

pith:2026:PBNEBYWPMSLX6CLPF476XANXS5

not attested not anchored not stored refs pending

Post-Training is About States, Not Tokens: A State Distribution View of SFT, RL, and On-Policy Distillation

Dong Nie

arxiv:2605.22731 v1 · 2026-05-21 · 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{PBNEBYWPMSLX6CLPF476XANXS5}

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	2026-05-22T02:04:52.346443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

785a40e2cf64977f096f2f3feb81b7977f647b2244a1fe925e4aa6d1caf252c1

Aliases

arxiv: 2605.22731 · arxiv_version: 2605.22731v1 · doi: 10.48550/arxiv.2605.22731 · pith_short_12: PBNEBYWPMSLX · pith_short_16: PBNEBYWPMSLX6CLP · pith_short_8: PBNEBYWP

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/PBNEBYWPMSLX6CLPF476XANXS5 \
  | 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: 785a40e2cf64977f096f2f3feb81b7977f647b2244a1fe925e4aa6d1caf252c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89596fb6158cd2a271a48191ed152a4f6153d9db1f8e2fd9f13380fbfb3017b4",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-21T17:03:22Z",
    "title_canon_sha256": "45dbced9692e7ff704acf77c8b0dc4c121d1c450fa1e185bd974aa4a934e266e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.22731",
    "kind": "arxiv",
    "version": 1
  }
}