Pith Number

pith:PCXXHQZV

pith:2026:PCXXHQZVRVPMFNOOUXSN7HSLRQ

not attested not anchored not stored refs pending

Purified OPSD: On-Policy Self-Distillation Without Losing How to Think

Chen Shen, Gang Chen, Haobo Wang, Hao Chen, Jieping Ye, Jintao Tong, Junbo Zhao, Rui Miao, Shaotian Yan, Wentao Ye, Xiaomeng Hu, Zhanming Shen

arxiv:2607.02234 v1 · 2026-07-02 · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PCXXHQZVRVPMFNOOUXSN7HSLRQ}

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	2026-07-03T01:17:45.980770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78af73c3358d5ec2b5cea5e4df9e4b8c372b40de7f5dc10f2bb43ffd421126a3

Aliases

arxiv: 2607.02234 · arxiv_version: 2607.02234v1 · doi: 10.48550/arxiv.2607.02234 · pith_short_12: PCXXHQZVRVPM · pith_short_16: PCXXHQZVRVPMFNOO · pith_short_8: PCXXHQZV

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/PCXXHQZVRVPMFNOOUXSN7HSLRQ \
  | 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: 78af73c3358d5ec2b5cea5e4df9e4b8c372b40de7f5dc10f2bb43ffd421126a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b153bd9bcbeaa6e3e4f182aada0c1a57e0636f5e936b3e0b2a80a9c65f5c72c",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-07-02T14:33:07Z",
    "title_canon_sha256": "8186fd60bc4c2660852aa529bde1e6e87e697911d3a20286407918e0699775cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.02234",
    "kind": "arxiv",
    "version": 1
  }
}