Pith Number

pith:KIDQJHHE

pith:2026:KIDQJHHECD3OXBRRZWSJ5NZJAU

not attested not anchored not stored refs pending

OPERA: Aligning Open-Ended Reasoning via Objective Perplexity-based Reinforcement Learning

Haoyang Dai, Hongming Tan, Ninghao Liu, Wenxuan Jiang, Xiaoyu Li, Xuecheng Wu, Xuezhi Cao, Zijian Zhang, Zining Fan

arxiv:2606.25757 v1 · 2026-06-24 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KIDQJHHECD3OXBRRZWSJ5NZJAU}

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	2026-06-25T01:18:14.439878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5207049ce410f6eb8631cda49eb729050489ccbe2e73b5786089cfefd7e6c764

Aliases

arxiv: 2606.25757 · arxiv_version: 2606.25757v1 · doi: 10.48550/arxiv.2606.25757 · pith_short_12: KIDQJHHECD3O · pith_short_16: KIDQJHHECD3OXBRR · pith_short_8: KIDQJHHE

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/KIDQJHHECD3OXBRRZWSJ5NZJAU \
  | 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: 5207049ce410f6eb8631cda49eb729050489ccbe2e73b5786089cfefd7e6c764

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8385aae6c152aa4dd031ca8ed93e1cee9be56758f7c80f6628b04996f3148ca0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-06-24T12:31:14Z",
    "title_canon_sha256": "319c297a5f9b707d72107d68f5dec870ad9024c9422e65367a202667f83682df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.25757",
    "kind": "arxiv",
    "version": 1
  }
}